Thermal stabilizers microcapsules WSD intenal lubricantgood compatibility with PVC

PVC as wall material , hydrotalcite, calcium / zinc composite heat stabilizer as core materials, preparation of an efficient, environmentally friendly PVC composite stabilizer microcapsules , and discusses the optimal preparation of the microcapsules . The results showed organic pigments that the microcapsules prepared solid content of 15% , when the stirring speed of 600r/min, the stirring time is 160min, the non-solvent solvent such as tetrahydrofuran and ethylene glycol ratio of 5:3 , the amount of emulsifier is 3% Span80 The resulting microcapsules compact structure , particle size distribution 100 ~ 450μm. The heat stabilizer microcapsules with a certain prospect. By following five study concluded . These five areas are: the impact of the solid content of the microcapsules , solvent and non- solvent ratio of the impact of the microcapsules , stirring affect the speed of the microcapsules , stirring time of microcapsules , the microcapsules emulsifier affected. Optical brightener Conclusion : the optimal preparation of the microcapsules may be: a solid content of 15% , stirring speed of 600r/min, the stirring time 160min, the mass ratio of solvent and non- solvent is tetrahydrofuran, ethylene glycol is 5:3 , the amount of emulsifier Span80 3% , ambient temperature and pressure , etc. can be filtered and dried to obtain the particle size distribution of the microcapsules 100 ~ 450μm. This heat stabilizer microcapsules good compatibility with PVC , thermal stability and mechanical properties under further study.

PVC lubricant analysis on data obtained from the rheometer

Liquidity and inversely proportional to the viscosity of the melt viscosity and is proportional to the torque. Therefore, the better the melt flow, the lower the torque. The results are given in three WSD Calcium stearate  torque value in the torque rheometer, which is the minimum torque, maximum torque (torque plasticizer), and the balance torque. The author believes that the plasticizing torque evaluate lubricant to improve the liquidity of the most important indicators of PVC resin. Of course, the minimum torque and torque balance also has certain reference but they are a very good correspondence between the plasticizing torque, general plasticizing torque, minimum torque and torque balance is large, and vice versa. I also  WSD Titanium dioxide rutile believe that the plasticizing effects of rotation torque device energy consumption is much larger than the actual processing equipment affect the balance of torque. There are two reasons: ① in the general proximity rigid PVC formulations are useful ACR processing aid, in this case, the torque value changes plasticized different lubrication systems is large, the  WSD Aluminum hydroxide torque balance is not very significant change [8]; ② various reasons (such as to avoid thermal decomposition, improved productivity, etc.) wishes to process the molten material balance as the torque corresponding to a shorter time, i.e., after reaching the expected degree of plasticized plastic melt leave processing equipment as soon as possible. Although only a plasticizing peak torque, but the plasticizing time of the peak corresponding to the integral of the area (energy consumption), but much greater than the torque corresponding to the balance of the integrated area of ​​time (energy consumption). It has also been proved: plasticizers torque only a few percent of large, integral surface because it is large, it also consumes a lot of energy, processing equipment due to overburdened

PVC lubricant developed rapidly

With the rapid development of industrial technology , foreign to all kinds of hard PVC products as raw materials ( such as tubes, sheets, plates , profiles , etc. ) have been developed rapidly , and these WSD Titanium dioxide rutile  different hardware products due to different processing equipment and technology needs , whether it is the lubricant for PVC from the variety and quantity requirements are made ​​more so , this demand will continue to promote the development and production of lubricant products.
Pvc Pvc products in the lubricant as a vital aid, it is compatible with PVC resin is very good , often mixed with resins, reduce WSD stearic acid  the melt viscosity of the resin to improve its liquidity. Such as butyl stearate , lead stearate lubricant is often used within pvc. Wherein the lubricant is stearic acid salts as well , and are effective stabilizers, and therefore play an essential role in the production process of pvc products . The plastics industry professionals also said that according to the PVC lubricant compatibility with PVC resin by other additives ( especially by other lubricants ) and change impact of the  WSD Chlorinated paraffin phenomenon and the different materials, PVC products must have an appropriate plasticizing degree raised this important guide and external lubrication balance. Pvc internal and external lubricant in the direction of future development , and according to this guidance for the design and production of PVC lubricant inside and outside work . In order to better assist the lubricant pvc products ( especially hard pvc products ) in the production process , thus ensuring a smooth and efficient production .

Introduce some PVC flame retardant technology

Generated a lot of smoke when burning machine toxic gas , people poisoning, serious cause great harm to the human body . The flammability of plastic products bring to our lives a great security risk, therefore , the development of a class of flame retardant products that WSD PVC flame retardant  can be added to plastic products , play a retardant effect is the vast number of plastic products manufacturers and people requirements. Environment and conditions for combustion , flame retardant products are appropriate to develop it. Our analysis is the first element of the combustion heat, oxygen and fuel. Flame through endothermic effect, covering the role of several chain reaction mechanism , the role of non-combustible gases , such as suffocation inhibition play retardant effect.
For certain requirements added flame retardants used , without compromising the physical properties of plastics. With weather resistance , durability , and even lower prices , so as to use a wide range . 1 , so that combustibles charring flame retardant , flame retardant to achieve the effect . This flame-retardant effect is mainly play a role in the  WSD Chrolinated polyethylene solid phase , flame retardant materials in this category are mainly phosphorus-based flame retardant ( including organic and inorganic phosphorus- phosphorus-based ) .
2 , flame retardants to form non-volatile diaphragm under fire conditions , isolated from the air to reach retardant purposes. This flame-retardant effect is mainly play a role in the liquid phase. Retardant materials in this category are mainly borates, halides, phosphorus , and antimony oxide -based material , or to reflect each of these types of substances generated between the materials .
3 , the hydroxyl radical decomposition  WSD Aluminum hydroxide products retardant chain reaction
Flame should be cut so as to achieve the purpose . This flame-retardant effect is mainly play a role in the gas phase. This type of material is mainly play a role in the gas phase. Such fire-retardant material is mainly halide and antimony trioxide.

Some major upgrade of the performance of PVC lubricant

Efficient and environmentally friendly non-toxic polymer composite lubrication is Jianhong lubricant formulations plant the introduction of international advanced technology and processes , using  WSD PVC stabilizer imported raw materials and foreign PVC plastic manufacturing process and material properties , polymer developed excellent internal and external lubricant. Overcome the lack of trouble and slip agents processing performance on the traditional monomer . Add this product safe to use, easy to mix , more stable performance , reasonable adjustment formula in the case , has the following remarkable properties: 1 , reducing the coefficient of friction between molecules and promote plasticizing , stable and appropriate to reduce the amount of system products ; has good off film effects , enhance surface finish and scratch resistance ; 2 wide melting range of this product , significantly improved PVC material processing flow freely and not sticky , thus  WSD Aluminum hydroxide increase productivity , reduce equipment wear and energy consumption, reduce the rate of non-performing products ; 3 , significantly improved fillers , pigments and other additives in the PVC dispersion resin , may be a corresponding increase in the amount of filler , and to products, color stability, gloss increases ; 4, the product in the processing of PVC both in front of and outside the latter lubrication within the recommended dosage is not blooming , no precipitation , with good  WSD PVC flame retardant stability. Efficient and environmentally friendly non-toxic polymer composite lubrication P-80A Scope: nontoxic polymer composite efficient lubrication P-80A is widely used in non-transparent sheet, plate , wire and cable , pipe fittings , profiles and other furniture edge banding class PVC products.

The main role of dibasic lead phosphite

English name : Dibasic lead Phosphite
MF : 2PbO · PbHPO3 · H2O
Properties: white or slightly yellow powder. Sweet poisonous. Density of 6.1 , the refractive index of 2.25 , at about 200 ℃ becomes gray and black , about 450 ℃ turns yellow . And all of the water-insoluble WSD aluminium stearate  organic solvent , dissolved in hydrochloric acid , nitric acid. Has excellent weather resistance properties , thermal stability, electrical insulating properties , and resistance to oxidation and ultraviolet shielding performance.
Uses : polyvinyl chloride and polyvinyl chloride / polyethylene copolymer heat stabilizer. Mainly used for opaque hard and soft WSD Titanium dioxide rutile  goods, especially outdoor cables, building panels , corrugated sheet , pipe and so on. Dihydrochloride ( short) is a monomer lead salt , lead salt stabilizer is a composite material , the effect is not used alone , the need for different uses , tribasic lead sulfate was added , and the lead oxide in the formulation can lead stearate use the successful application of nano-scale high-purity rare earth elements BAUER (BAOHUA) efficient , non-toxic calcium zinc stabilizers rare in an efficient , high WSD PVC flame retardant  environmental known. No smell, dispersibility , fluidity, stability, weather resistance , and excellent transparency . Is the best environmental alternative to organic tin compound lead, lead and rare earth compound stabilizer .

PVC flame retardant future trends

People's lives , the most used items are plastic products, manufacture

of plastic products are made ​​from a polymer  WSD zinc stearate material , most plastic

products by PE, PP, ABS, PBT, PO, PA and other plastic materials with

excellent performance , these characteristics have flammable materials ,

generated a lot of smoke when burning machine toxic gas , people

poisoning, serious cause great harm to the human body .
   The flammability of plastic products bring to our lives a great

security risk, therefore , the development of a class of flame retardant

products that can be added to plastic products , play a retardant effect

is the vast number of plastic products manufacturers and people

requirements.
  Environment and conditions for combustion , flame retardant products are

appropriate to develop it. Our analysis is the  WSD Titanium dioxide rutile first element of the

combustion heat, oxygen and fuel. Flame through endothermic effect,

covering the role of several chain reaction mechanism , the role of non-

combustible gases , such as suffocation inhibition play retardant effect.
  For certain requirements added flame retardants used , without

compromising the physical properties of plastics. With weather resistance

, durability , and even lower prices , so as to use a wide range .

Retardants future trends in 10 years of the 21st century , the global

flame retardant industry will maintain a moderate growth rate, the main

development trends in the next 10 years retardants are: halogenated flame

retardants ( including halogen-containing phosphate ) will will continue

to be used , and the amount may still be a slight increase, but the

product mix will be adjusted , polybrominated diphenyl ethers and other

people will be cautious in dealing with ; intumescent flame retardant

phosphorus and nitrogen and nitrogen-based system will be further the

development and the favored ; non-toxic, inorganic halogen-free flame

retardant and smoke suppression , such  WSD Chlorinated paraffin as modified aluminum hydroxide ,

magnesium hydroxide, zinc borate , magnesium hydroxide can be used

especially in high temperature , will further been developed ; smoke

Suppressant market prospects ; retardants field calls for more regulations

and standards come out.

The main purpose and introduce phosphate dibasic lead

Usually used as a reducing agent and pesticide intermediates. Whitening agent used in the manufacture of nylon , plastic stabilizer , synthetic fibers, dibasic lead phosphate , glyphosate, water treatment  WSD Titanium dioxide rutile agent , such as potassium dihydrogen phosphate and sodium ATMP manufacturing phosphite , synthetic fibers, plastics and stabilizers organophosphorus pesticide raw materials. Polycarbonate can be used as a stabilizing agent , also used in the manufacture of nylon 1010 antioxidant , but also for the production of highly efficient water treatment agent ATMP.
English name : Dibasic lead Phosphite
MF : 2PbO · PbHPO3 · H2O Properties: white or  WSD PVC lubricants slightly yellow powder. Sweet poisonous. Density of 6.1 , the refractive index of 2.25 , at about 200 ℃ becomes gray and black , about 450 ℃ turns yellow . And all of the water-insoluble organic solvent , dissolved in hydrochloric acid , nitric acid. Has excellent weather resistance properties , thermal stability, electrical insulating properties , and  WSD Aluminum hydroxide resistance to oxidation and ultraviolet shielding performance. Lead content ( PbO dollars ) % 89.0-91.0 89.0-91.0 88.5-91.5
Phosphorous acid (H3PO3 meter ) % 10.0-12.0 10.0-12.0 9.0-12.0 Heating loss % ≤ 0.30 0.40 0.60 Residue (75μm sieve )% ≤ 0.30 0.40 0.80 Purpose: PVC and PVC / polyethylene copolymer heat stabilizer composition . Mainly used for opaque hard and soft goods, especially outdoor cables, building panels , corrugated sheet , pipe and so on.

Some simple request intenal lubricant's

pvc lubricants lubricants can be divided into two kinds of internal and external lubricant pvc pvc, pvc external lubricant main role is to improve the frictional heat the metal surface of the polymer melt and processing equipment. It is less compatible with the polymer is easy to migrate out from the melt, so the lubrication can be formed in a thin WSD Polyethylene wax  layer of plastic and metal melt interface. pvc lubricants have good compatibility with the polymer properties, which serves to reduce the effect of cohesion between the polymer molecules within the polymer, thereby improving the plastic melt in the heat of friction and melt flowability. Commonly used lubricants are stearic acid and salts thereof outside; internal lubricant is a low molecular weight polymer. Function of some other lubricants. Each lubricant has actually can achieve a required role in internal and external lubrication always together, but in a way more prominent. A lubricant with different polymers under different processing conditions or exhibit different lubrication, such as high temperature, high pressure, pvc in the lubricant will be squeezed out and become pvc external lubricant. From the perspective of processing machinery, in mixing, rolling, etc. slush molding process, external lubricant has an important role in extrusion, injection molding, the lubricant is more effective. The amount of lubricant is generally 0.5% to 1%, the choice should pay attention to the following aspects: (1) the flow properties of the polymer molding process needs have been met, then the role of the main considerations lubrication to ensure internal and external balance; ( 2) lubrication is valid, it can be in the temperature during molding, the plastic surface to form a complete liquid film, and may be so close to the melting point of the lubricant outside the molding temperature, but to a difference of 10 ℃ ~ 30 ℃ order to form a complete film; (3) When selecting a lubricant in production should be so as to achieve the following requirements: (4) moderate size, the internal balance and external lubrication resin compatibility effect; non-blooming, easy scaling; (5) surface gravity is small, small viscosity, the expansion of the interface, easy to form an interface layer;
(6) as far as possible without reducing the  WSD Metallic stearate excellent properties of the polymer, does not affect the performance of the secondary processing of plastics;
(6) itself is excellent in heat resistance and chemical stability, does not decompose during processing, non-volatile;
(7) non-corrosive, does not pollute the film, there is no toxicity.
However, the mere use of a lubricant is often difficult to achieve the purpose, to be used in combination of several lubricants, lubricating composite developed rapidly in recent years, the choice can be to look at the role of multi-angle lubricant. Commonly used lubricants are stearic acid, butyl stearate, oleic acid amide, ethylene bis stearic acid amide.
Many substances can be used as a lubricant wax, natural waxes such as liquid paraffin (mineral oil), microcrystalline wax, etc., but the effect is mixed. Natural waxes more to do with external lubrication, the lubricant can be used as a variety of plastic, a release agent, generally the amount of 0.2 ~ 1phr, but its compatibility, thermal stability and dispersibility is not good, the amount is not too large, and preferably lubricants and use; while shortening more to do with PVC, PS, lubricants, lubricating properties, thermal stability is also very good, the general amount 0.5phr they are drug-free, can be used for food packaging. Another kind of microcrystalline wax: in the plastic processing is also used as a lubricant in an amount of 1 ~ 2Phr, good thermal stability and lubricating property than normal paraffins. Low molecular weight polymers are widely used as a lubricant such as polyethylene wax, low molecular weight polypropylene, the inner and  WSD Chlorinated paraffin outer are better lubricity, and non-toxic. Polyethylene wax materials suitable for PVC extrusion, calendering, the amount is generally 0.1 ~ 1phr, processing efficiency can be improved to prevent the adhesion of the film to improve the dispersion of fillers or pigments, compatibility and transparency is not good; irregular low molecular weight polypropylene as the structure rigid PVC, PE lubricant, excellent performance, other additives to improve dispersibility.

The main reason heat stabilizer for shoes heat discoloration

Thermal stabilizers should preferably absorb both HCL, to eliminate the

active site, the addition of a conjugated polyene chain, carbenium salt

damage, etc. to prevent auto-oxidation, which does not produce the product

of the catalytic degradation of PVC. The Plastic impact modifier  actual heat stabilizers have

different functions due to exhibit different thermal stability

characteristics, can be divided into early-type, long-term, intermediate-

and versatile four.
Shandong Zouping, this piece of land has been brought up generation phase

of Fan, its famous through the ages "first and worry about the world,

after the world music", popular for generations lips.
A) cadmium, zinc soap is typical of early-type heat stabilizers, can

quickly absorb HCL, and effectively substituted with carboxylate PVC

unstable chlorine atom in the catalytic chain Cd, Zn, thereby effectively

suppressing early degradation and coloring , but because of the

consumption of fast and transformation products CdC12, ZnC12, but also off

the HCL efficient catalyst PVC, PVC and  Chlorinated paraffin thus lead to the degradation of

the material suddenly vicious black, so poor long-term thermal stability.
2) barium, calcium soaps are typically long-term thermal stabilizers,

absorption HCL function only and therefore can not inhibit coloring PVC,

but the conversion product BaC12, CaC12 do not have catalytic activity,

does not cause a sudden black PVC, long-term heat stability better.
3) fatty acids, organic tin are intermediate, both absorption HCL, can

effectively replace with carboxylate unstable chlorine atoms PVC chain,

and transformation products do not have catalytic activity.
4) mercaptan organotin it has versatile Polyethylene wax  features, while a variety of

mechanisms can stabilize PVC, transformation products do not have

catalytic activity, and therefore both excellent initial and long-term

thermal stability effect.

Lubricants can be divided into several

Friction portion for lubrication, cooling and sealing machine

materials.
According to sources of mineral lubricant (such as machine oil),

vegetable lubricant (such as castor oil) and animal lubricant (such as

tallow). In addition, synthetic lubricants, such as silicone oils,

fatty acid amide, oleic acid, polyester, synthetic esters, carboxylic

acid. Depending on the properties of WSD PVC lubricants  the lubricating oil, oily liquid,

semi-solid grease-like and solid lubricant grease.
  Can be divided according to the use of industrial lubricants

(including oil and grease), the body lubricant.
Many types of lubricants, are widely used. Lubricant is also used to

improve flowability and releasability and other plastic processing, to

prevent adhesion of the mold in the machine and fish eyes or other

defects. Industrial Lubricants
The main function is to reduce the friction surface friction damage.

However, due to a wide range of industrial machinery, machinery mainly

to meet the requirements of lubricants to reduce friction, wear, there

are some special requirements with different working environment,

working conditions and proposed. Divided into 1) Automotive Lubricants

2) industrial lubricants including machine oil (high oil), weaving oil,

spindle oil, rail oil, rolling oil, gas  WSD chromium oxide turbine oil, compressor oil,

refrigeration oil, cylinder oil, bunker oil, gear oil, engine pressure

gear oil, axle oil, instrument oil, vacuum pump oil (
 How to choose the right lubricant body
 Insufficient vaginal lubrication, it will increase the pain during

sex, some of the older women simply give up sex. "At this point in

relation to moderate use of lubricants, one to improve the sensitivity

of the clitoris; secondly, can not, through excessive drying of vaginal

discomfort.."
  For water-soluble and oil-based lubricants market, "in essence no

difference between the two, but the water-soluble relatively easy to

use, easy to clean up afterwards, but also to prevent allergies." Also,

try not to use the additional role WSD Chrolinated polyethylene with sterilization lubricants,

single function products safer to use. "In the hospital to buy the

lubricant is definitely the safest, followed to some large pharmacies,

large supermarkets and regular sex shop to buy."

PVC heat stabilizers commonly used test methods which

To introduce PVC heat stabilizers of two common test methods. Something called : Torque Rheometer test method ; second test called the roll blackened test method. PVC heat stabilizers torque rheometer test method
Torque rheometer is an imitation of the actual PVC processing a typical small scale type instrument . The outside of the instrument has a closed processing tank , through a computer connected to the instrument can be controlled by the temperature of the processing tank , and  the rotation of the two rollers inside the added mass of material is PVC lubricants  generally a torque rheometer 60 ~ 80 g, depending on the instrument models and different. Experimental steps : preparing in advance the type comprising a heat stabilizer masterbatch based masterbatch formulations except PVC lubricant. Torque rheometer temperature set in advance , and when the temperature rose to specify the speed smoothly , it will weigh a good mix added processing tank , quickly closed the recording of various parameters on the computer connected to it , is the flow curve . After processing is complete, you can also get different physical characteristics of the Chrolinated polyethylene  extrudate , such as whiteness, whether shaping , smoothness and so on. With these parameters, you can determine the appropriate industrial potential heat stabilizers , heat stabilizers suitable should have proper torque and plasticizing time , extrusion molding should be better and whiteness, smooth surface and so on.
PVC heat stabilizers roll blackened test
As a method for dynamic determination  Stabilizers for pipe based adjuvant effect of a thermal stabilizer , in the absence of double roller dynamic rheometer using a twin roll selected experiments tableting equipment, which together with the high-speed mixed powder , tablet molding, the resulting samples were subjected to extruded repeatedly until the black test piece until the recording time of the fully black , called blackening time . By comparing the length of time to determine the blackening of different thermal stabilizers for PVC thermal stability effect.

Analysis of the principle of a flame retardant

Flame retardants , simply, the object is to prevent combustion additives, the flame retardant effect can reduce the speed of the object and scope of combustion , and can not absolutely prevent burning objects , also known as flame- retardant agent, and therefore , the refractory  impact modifier agents or fire retardant . Our flame retardant into inorganic flame retardants , wood paper fabric flame retardant, fire retardant , brominated flame retardants four categories, flame retardant materials in different ways in different add retardant principle basically the same, with small series please go find out. ( 1 ) An article comprising a flame retardant can produce flame smothering extinguishing gas during combustion . Such as antimony trioxide, it encountered due to the combustion of HCL can react with Chrolinated polyethylene  a smothering gas quenching , namely antimony oxides of nitrogen in PVC , which play a flame effect. ( 2 ) the heat generated during combustion of the flame retardant material can absorb , from cooling effect of slowing the rate of combustion . Such as aluminum hydroxide , the proportion of the molecule which contains chemically bound water of up to 34 % of this bound water stable at processing temperatures of most plastics , but  PVC lubricant more than 200 ℃, begin to decompose , releasing water vapor. And every one mole of aluminum hydroxide decomposition , to absorb 36 kcal. ( 3 ) providing  a layer of oxygen barrier layer isolated , self-extinguishing due to the isolation of oxygen , such as the phosphate -based flame retardant that is generated by burning oxygen barrier phosphide barrier layer .
( 4 ) can generate free radicals react with the plastic , they can be the reaction product from the flame retardant plastics .

Correct view of non-halogenated flame retardants problem

According to whether they contain halogen elements ( mainly bromine and chlorine ) , flame retardants and halogenated flame retardants can be divided into two major categories of non-halogen flame retardants . Among them, halogenated flame retardants ( mainly brominated flame retardants ) development of an early start , mature technology, the number has nearly a hundred species , common products decaBDE , decabromodiphenyl ethane, tetrabromobisphenol phenol a, six HBCD , etc. ; rather late start flame retardants , common products, including phosphate, red phosphorus and organic pigments  other phosphorus-based flame retardants, such as melamine familiar to the public as well as nitrogen-containing flame retardants hydroxide aluminum hydroxide, magnesium hydroxide flame retardants and inorganic minerals . At present, China modified plastics used in halogen flame retardant mainly electrical and electronic products contain halogenated flame retardants . Therefore, in the Chinese market , halogen flame retardant has a pivotal position , and showed a steady growth momentum of development.
Halogen electronic appliances has become one of the issues the industry must face . The origin and development of non-halogenated background comprehensive understanding of non-halogenated problem , we must first understand the history of halogen elements . "Halogen " is a Greek word meaning " salt produced stuff" , a halogen or a halogen element is stearate aluminum  bromine, chlorine, fluorine , iodine and astatine five kinds of chemical elements in general. Bromide is mainly used in insecticides and fumigants and other products, but also the main ingredient of many drugs , such as anti- histamine drugs and painkillers . Of course , by far , the most important is the use of bromide manufacture brominated flame retardants. Halogen-free and have a correct view of halogen-free flame retardants and halogen- halogen flame retardants have different performance , strengths and weaknesses and areas of application , should not be selective . Regulators , industry organizations and industry chain should focus on the individual has problems even by some potassium stearate  regulations prohibit products, rather than a stick and killed a category of products , such as all or halogen flame retardant halogen-free flame retardants. We should be aware that only indicates that the flame retardant halogen-free does not contain bromine, chlorine, fluorine , iodine, astatine these five halogen elements , neither on behalf of environmental protection, can not represent the whole industry development direction. Balanced and coordinated development of different flame retardants should play their respective role in fire safety .

Magnesium hydroxide classification and presentation

Magnesium when heated (340-490 degrees) decomposes to absorb the combustion flame retardant surface heat; while releasing  heat stabilizer for panel large amounts of water dilute combustible surface oxygen, decomposition of the active magnesium oxide attached to combustible surfaces to prevent further the burning proceed. Magnesium hydroxide flame retardant in the whole process  not only does not produce any harmful substances, and its decomposition products in a fire, while also able to absorb a lot of rubber, plastics and other polymer produced by combustion of harmful gases and smoke, constantly absorbing active magnesium oxide unburned melt residues butyl stearate  from the combustion stop soon while eliminating smoke, preventing droplet, is an emerging environmentally friendly inorganic flame retardants.
Flame retardants can be classified according to the chemical composition of organic and inorganic flame retardants two categories. Organic phosphorus flame retardants are divided into two series, and halogen. Since the existence of organic flame retardants toxic decomposition products, smoke and other shortcomings, are gradually being  titanium dioxide replaced by inorganic flame retardants.
The main varieties are inorganic flame retardant aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide, tin oxide, molybdenum oxide, ammonium molybdate, zinc borate, in which aluminum hydroxide and magnesium hydroxide due to the endothermic decomposition of large and produce H2O can play the role of the absence of air, its decomposition temperature oxide material is therefore two kinds of flame retardants can not only play the role, but also can play a role in filling, it has no corrosive halogen gas and harmful gases, non-volatile, long lasting, non-toxic, smokeless, no drip characteristics.

PVC heat stabilizer in the process is an indispensable additive

PVC heat stabilizers are indispensable in the process additives , as human beings living on their own health and environmental concerns surrounding gradual increase awareness of the world has promulgated a series of measures to limit the use of heavy metal heat stabilizers .
Outside the industry generally believe that understanding of PVC heat stabilizers environmental protection has become an tribasic lead sulphate  irreversible trend , PVC heat stabilizers in the process of environmental protection , research and development non-toxic, non-polluting , composite , and efficient heat stabilizers have been more widely application .
PVC resin having a self- catalytic release HCL, or to instability of the PVC resin produced by reflection from the addition polyalkylene structure , to prevent or reduce the decomposition of PVC resin . Generally used in the formulation of the thermal stabilizer features, functions and products required to consider. Here are a few people stabilizer features:
1 lead salt stabilizer is mainly used  vegetable stearic acid in hard products in . Lead salt stabilizer has good thermal stability , excellent electrical properties , low cost and so on. But its toxicity, easily contaminated products, can only produce opaque products. In recent years, large numbers of composite stabilizer , one-component stabilizer has the danger of being replaced . Composite stabilizer is characterized by specific and strong , pollution, processing enterprises, the advantages of simple ingredients . However, no uniform standard, so each of the composite stabilizer vary greatly.
2 barium cadmium -based stabilizers is white foaming agent  better performance of a heat stabilizers . Wider use of PVC plastic sheeting . Usually barium cadmium and zinc and organic phosphite antioxidant and use .
3 calcium zinc stabilizers can be used as non-toxic stabilizers used in food packaging and medical devices, pharmaceutical packaging, but its stability is relatively low education , a large amount of calcium -based stabilizers when transparency is poor , easy to spray cream. Calcium zinc stabilizers are usually used polyols and antioxidants to improve its performance, the country has recently been used in rigid pipe Ca-Zn compound stabilizer appears.
4 organotin heat stabilizers better performance for rigid PVC products with a better variety of transparent products , especially toxic octyl tin packaging products almost become indispensable stabilizer.

metal soaps introduce some of the main waterproofing agent

Waterproofing agents of metal soaps soluble metal soaps (the soluble soap ) waterproofing agent , and asphaltenes II metal soap waterproofing agent . Water soluble metal soaps agent is stearic acid , ammonia , potassium hydroxide ( or soda) and water heating by  magnesium hydroxide flame retardant mixing a saponified preparation waterproofing agent . This product is a paste -like, mixed with the cement mortar or concrete, the cement particles and aggregates can form a hydrophobic adsorption layer and between the formation of insoluble matter , from the tiny pores and clogging the capillary filling passage effect. Bituminous waterproofing agent is a metal soap liquid petroleum asphalt, lime and water, mixing, grinding is made by drying . Mixed with the PVC foaming board stabilizer  cement mortar and concrete ... a pore size in the nanometer to millimeter . If the surface in contact with the aqueous solution by capillary action will be adsorbed to the surface of concrete and further penetrate into the concrete ; same time , the solution of harmful substances such as chlorine ion , sulfate ion and the like can also be easily transported water into the concrete , reinforced concrete structure to bring serious corrosion damage [ 1 ] . At present , domestic and foreign has  red iron oxide been widely adopted penetration waterproofing agent on the concrete surface water treatment [ 2 ] , but using this traditional approach , the penetration depth of the water repellent is very limited , and in some special cases waterproof effect is not very satisfactory . If you can water repellent mortar or concrete as a component incorporated therein , its protection would be better, this approach is within the mixed water treatment. This paper mainly uses four different types , two kinds of different dosage of metal soap , add it to the concrete mixture to compare , test and research within the mixed metal soap of concrete compressive strength, water absorption coefficient by capillarity and resistance to chloride ion intrusion ability.

concrete surfaces enclosing class waterproofing agent of some description

Concrete surfaces enclosing class waterproofing agent is applied to the concrete surface coated with a layer of a surface layer can penetrate into the pores of the hydrophobic manipulation of waterproof material , such as commonly used in China silicone waterproofing agent, waterproofing agent  Impact modifier for PVC like sodium silicate , and the use of foreign methacrylate monomer waterproof Qi carbazole vinegar and so on. 1 penetrate the surface of the closed water causes and mechanism of concrete seepage mainly due to external pressure , or as a result of which the pores of the concrete surface adsorbed water, or because of the combined effect of both . Pore ​​water is due  iron oxide yellow to the pores on the surface acting on the surface tension of water in the concrete grout generated driving force of the adsorbed water . Concrete interface between water and the contact angle of the meniscus is generally less than 90 degrees, the force to drive water into the pores ( as shown in Figure la ) , which can wet the surface . When using a  plastic processing aid certain way ( brushing, spraying , etc. ) in the surface layer of the concrete surface coating applied waterproofing agent enclosing class , due to water repellent and coagulation Rui Qian Zhu Xi air bundle wrapped in cloth which fluorine anxious when Chongqing a flute into the water " containing ) doors ,, (a) normal coagulation on the surface of the twist 90 ' ) ST 1 contact angle ( wetting of the surface of the concrete filling the pores of the soil and the water repellent composition of the reaction itself, or because of the chemical properties of the pores of the concrete ( micropores , pores , etc. ) and water contact angle is increased to more than 90 degrees ...

PVC stabilizer differences

Compared with other plastics , under the same conditions in the stabilization of PVC requires more significant problem . Mainly if  epoxidized soybean oil the PVC unstable , then it can not be processed and immediately sharp and severe degradation of discoloration . PVC with suitable additives and stabilizers are varied, so that the development of the industrial sector into a special . Which accounted for the first based on barium / Fort Worth -based organometallic compounds of lead , in addition, some of the organic stabilizer also has a certain importance . For future development , to discuss a given purpose "stable compound" possibilities. Factors affecting the  PVC foaming board stabilizer degradation of polyvinyl chloride as a thermal decomposition activation energy minimum ( except than polyvinyl alcohol ) , so that its special stabilization is very essential . Whether fast (processing ) or slow (aging ) thermal degradation , the degradation process the most obvious feature is the presence of oxygen in the air , with automatic catalytic dehydrochlorination nature " '] . Due to the complex ions and Plasticizer for PVC  free based chemical process , reconciliation set PVC action by gathering damage mountains . multicollinearity play double generation and Springboard base by base and oxidation caused a color change in the Ming and mechanical properties of trace metals, particularly iron and zinc will accelerated degradation male . terminal group of the polymer additive material and the reaction is also a great shadow ...

Application of zinc stearate

Cold extrusion is a precision plastic volumetric forming technology is an important component. Cold extrusion is in the cold state of the metal blank into the mold cavity , the strong pressure and a constant speed under the effect of forcing the metal is extruded from the mold cavity , to achieve the desired shape and size, and a certain mechanical  dibasic lead phosphate extrusion performance.
Currently, cold extrusion technology has been in fasteners , machinery, instruments , electrical appliances, light industry, aerospace, marine, military, and other industrial sectors widely used. Specific products such as filter, electric fuel pump housings, capacitor housings, aluminum bottle , cosmetic aluminum tube , the bullet casing , at present, auto parts , 30 % ~ 40% of the parts are manufactured by cold extrusion process .
Currently available for cold extrusion of metal materials: lead, tin , silver, aluminum , aluminum alloy , copper and oxygen-free copper (T1, T2,, brass, bronze, nickel, zinc and cadmium zinc alloys, pure iron, carbon steel , low alloy steel and stainless steel . Additionally, some for titanium and titanium alloys , tantalum, zirconium , and Kovar , etc. can also be cold extrusion , even bearing steel GCr9, GCr15 and HSS W6Mo5Cr4V2 also be a certain amount of cold extrusion deformation .
Cold extrusion , metal materials produced severe plastic deformation , the unit squeeze a lot of pressure , especially in cold extrusion of steel , the largest unit extrusion pressure up 2500Mpa. In such a high unit pressure , if no good lubrication, steel particles will be bad material welded together with the mold cavity which led to severe scratching the surface , making the extrusion pressure increased dramatically, mold life greatly decreased, even rupture . Lubrication is directly related to product quality and tool life , determines the success or failure squeeze .
So the use of a good and reliable lubrication of cold extrusion method is very important. Currently used for a liquid lubricant ( such as animal oils, vegetable oils, mineral oil, etc.) , there are solid black iron oxide  ( such as zinc stearate , sodium stearate , graphite, etc. ) , they may be used alone , or in combination.
Lubricant mainly in: 1 . Reduce friction between the billet and the mold ; 2 . Reduce mold wear and improve die life ; 3 . Improve the quality of products . ( 1 ) cold forging lubricant : For forging, the more successful lubrication of the current approach is to phosphating metal blank surface saponification treatment . The so-called " phosphate " is chemically formed on the surface of the metal material of iron phosphate, zinc phosphate and the porous film. The film thickness is generally 10-25μm, the friction coefficient is low. Phosphate film is firmly bonded to the surface the metal billet with a certain plasticity, to some extent deformed together with the metal , this layer of porous membrane capable of storing a lubricant, when squeezed , can play the blank isolated from the mold effect and reduce the deformation friction between the metal and the mold . The so-called " saponification " is a fatty acid soap as a lubricant , so that the zinc phosphate coating with a chemical reaction treatment of zinc stearate lubricant .
Because phosphate - saponification treatment processes numerous long processing time , phosphate strict quality requirements , while the phosphate waste pollute the environment , and thus the world are seeking new ways to replace phosphate lubrication - saponification process .
Aqueous zinc stearate as a lubricant with good extrudability , extension, adhesion , lubricity
Its safety non-toxic environment pollutant emissions , successfully replaced phosphate - saponification treatment process ( degreasing rust - water cleaning - acid - water cleaning - phosphate - water cleaning - drying - saponification - - dried ) , ferrous metal cold forming to meet the demanding requirements for lubrication . And once completed : Surface treatment - water heating - dipping the agent - drying and other processes. For extension of large, high deformation , surface complex parts processing production, product processing effectively guarantee the accuracy , improve surface  titanium dioxide anatase quality, maximum protection of the mold surface , to extend the life of the mold . A thin lubricant film formed , one-piece lubricant low cost, cost than phosphate - saponification cost savings of 30 % to 45% .
Water-based stearate lubricant characteristics
Brushing the surface of the workpiece after forming a lubricating film polymer , even if subjected to repeated cold work extrusion, cold stamping, cold drawing forming , the lubricating film can be firmly attached to the workpiece surface , and with the extension of the surface extension without brushing again . Especially when applied to extension degree, deformation rate, complex workpiece surface , which is characterized more apparent.
Product Benefits
A, four outstanding advantages
1 , completely replace phosphate - saponification process
No phosphate, zinc stearate lubricant water after brushing firmly attached to the surface of workpiece lubricating film , and can be directly cold forming , simplifying the process , improving the efficiency and reduce the cost .
2 , to solve the many problems grease lubrication
Aqueous zinc stearate lubricant to the workpiece firmly attached to the rough surface of the lubricating film is formed , can easily solve the conventional grease pressure forming work loose after a good result , wrinkling , and mold strain burst phenomenon , the phenomenon nodulation .
3 , once painted , cold- molding process can be repeated
Aqueous zinc stearate lubricant lubricating film formed in the surface of the workpiece has an extension extending characteristics of the workpiece before processing brushing once, after three to five times without further processing are brushing , simplifying the process , improving the effect, reducing the cost.
4 , particularly suitable for extension of large, deformation rate, curved complex parts
Aqueous zinc stearate lubricant is formed in the surface of the workpiece having a lubricating film which extends extension characteristics, especially suitable for extension of large, deformation rate, the surface of the workpiece complex .
B, other general advantages
1, the aqueous zinc stearate small size, can effectively ensure accuracy , improve surface finish and product quality .
2, to reduce machine wear and extend tool life .
3 , expanding the workpiece material selectivity.
4 , reduce the pressure to save energy .
5 , reduce costs and increase efficiency.
6, the water -soluble nature stearate , making easier to remove surface residue .
6 , safe non-toxic and pollution-free , there is no emissions and emissions of sewage treatment problems , relieve sewage treatment costs and troubles.
Water stearate can also be applied to drawing, pressure- , stretching and other metal products processing the lubricating treatment . Market prospects are very broad .
I was doing aqueous stearate , the main research market applications , there is need to beg for PM samples .