2013年11月10日星期日

Flame retardant plastics must be added


   Everywhere in our lives, plastic products , plastic products in people's lives , the most widely used of a class of substances. We all know that plastics have flammable properties , life, many of  dibasic lead stearate the fire accidents , mostly caused by the combustion of plastic products , in order to protect people's safety and reduce fire hazard , plastic products in the course of processing , be sure to add flame retardants.
Combustion flame has prevented the material properties , the main demand for a flame retardant plastic , delay or prevent the plastic polymer plastics , especially burning. Increase the time it lit , lit self-extinguishing , difficult to ignite . Flame retardant additive is one of the important plastics processing , it can make plastic with flame retardant , self-extinguishing and smoke , thereby improving the safety performance of plastic products . On production and consumption , the current flame has  low molecular polyethylene become second plasticizer plastics additives, flame retardants consumption worldwide has more than 100 million tons. Flame retardant product selection , to comply with the following general requirements. ( 1 ) flame retardant , high efficiency ; ( 2 ) flame retardants with non-toxic , non-irritating odor properties , flame retardant process does not release toxic gases and smoke a lot . ( 3) The flame retardant has a good compatibility with the material can be uniformly dispersed in the plastic products , not carbon black  with plastics chemical reaction of the other components , does not affect the color and surface finish of plastic , and will not reduce the plastic the mechanical properties , electrical properties and other performance.
( 4 ) flame retardants in a wide range of different properties , in accordance with the use of different methods can be divided into additive flame retardant and reactive flame retardant . Additive flame retardant used for thermoplastics , is the largest amount of flame retardants , about 90% of total world retardants . The reactive flame retardant is used for thermosetting plastics .

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