2014年1月7日星期二

Component structure and application details of anatase titanium dioxide

First, the composition and structure of the rapid development of anatase titanium dioxide industry , anatase titanium dioxide industry has undergone great changes. So I believe the application of its products, netizens have also had a lot of knowledge and understanding. Here are the experts gives a detailed introduction. ( A ) , oil and water-based cosmetics into the anatase titanium dioxide , due to its chemical stability, high refractive index , high hiding power , whiteness is very good, and  PVC lubricants pollution , it is widely used in the field of cosmetics , from cosmetic whitening effect.
Features : ①, whiteness, hiding power is very strong. ②, the weather is very strong , suitable sunscreen whitening system. Usage and dosage : ①, widely used in cosmetic whitening powder, foundation, powder , pearl cream , facial mask, sunscreen and other cosmetic products. ②, sufficiently dispersed into the powder medium and then added to the system used , must ensure the uniform dispersion added . ( Two ) , cosmetic grade titanium dioxide Security: This series has been tested not hazardous to humans . And eye contact may cause mild eye discomfort . When in contact with the skin , does not appear adverse reactions. Enamel transparency with anatase titanium dioxide prepared , and has a small mass , impact resistance, good mechanical properties, colorful, easy to pollution.
(C ) Application Guide: wherein the aqueous dispersion of titanium dioxide can be easily added to the water , stir dispersed into the emulsion . Optional polyol is water dispersible carrier , you can easily and most reasonable use with cosmetics . Made of human skin slightly acidic , so weakly acidic skin care products should be matched . Second, the application performance with details Note We know that in everyday life we ​​are exposed from time to time on the application of titanium dioxide , for example, cosmetics, paints and the like, then the performance of  Chlorinated paraffin specific applications for titanium dioxide , what does ? Here are some detailed description: 1 , and the main way to improve the stability of anatase titanium dioxide whiteness affect the elements of anatase titanium dioxide whiteness there are many, for example, have an impact mineral resources , but also the impact of equipment and key technologies. Proved by several major factors affecting the degree of whiteness are: quality hydrolysis , removal of the impurity element and calcination conditions .
Anatase titanium dioxide hydrolysis technology , currently in the country have mainly two types of pressurized and atmospheric hydrolysis , hydrolysis and product quality from the point of view, the quality of atmospheric hydrolysis under normal circumstances are better, hydrolysis uniform particle size . To ensure good water quality , must take the concentrated liquid titanium quality indicators , control iron titanium ratio and solid content within the specified range , while increasing control of the operating conditions of hydrolysis . 2 , by surface treatment to improve application performance titanium dioxide powder is a very strong polarity , the hydrophilic nature is oleophobic , if the adsorption air and other types of pollutants , the dispersibility of the water relatively low, we often need to be processed on its surface , the treating agent is used frequently hydrated alumina and hydrated silica. 3, stable particle size distribution of titanium dioxide , titanium dioxide dispersion and improved ways to  stearic acid hiding on the titanium dioxide particle size distribution is a more complex indicators , which it has serious implications for the application of titanium dioxide pigment performance and product performance , therefore, dispersion of research we can analyze directly from the particle size distribution. Elements on the titanium dioxide particle size distribution is relatively complex , the first primary particle size hydrolysis , the hydrolysis by the control and regulating method for making the primary particle size can be maintained within a certain range. Followed by calcination temperature , calcination metatitanic process , the particles undergo a transformation of crystalline phase and growth, proper control of temperature, so that the growth of particles can be maintained within a certain range.

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