Can silica be used in TPE?

Answer: The TPR of the SBS system is useful. For example, shoe materials, toughening is obvious. But the TPE of SEBS system. Probably not used much. Because it affects the surface effect.

The following introduces the basic knowledge and application of silica

Silica is roughly divided into precipitated silica and fumed silica according to the production method. Fumed silica is a white amorphous flocculent semi-solid under normal conditions.

Silica
Transparent solid colloidal nanoparticles (particle size less than 100nm), non-toxic, with huge specific surface area. The fumed silica is all nano-silica, the product purity can reach 99%, and the particle size can reach 10~20nm, but the preparation process is complicated and expensive; the precipitation silica is divided into traditional precipitation silica and Special precipitation method white carbon black, the former refers to silica produced with sulfuric acid, hydrochloric acid, CO2 and water glass as the basic raw materials, the latter refers to the use of hypergravity technology, sol-gel method, chemical crystallization method, secondary crystallization Silica produced by special methods such as the reverse micellar microemulsion method or the reverse micellar microemulsion method. Precipitated silica is mainly used as reinforcing agent for natural rubber and synthetic rubber, toothpaste friction agent, etc. Fumed silica is mainly used as a reinforcing agent for silicone rubber, coatings and unsaturated resin thickeners, and ultra-fine silica gel and aerogel are mainly used as coating matting agents, thickening agents, plastic film opening agents, etc.

Silica, as an environmental-friendly additive with excellent performance, is mainly used in rubber products (including high-temperature vulcanized silicone rubber), textiles, papermaking, pesticides, and food additives. 

Benefiting from the growth in demand in tire manufacturing, silicone rubber industry, coatings industry, new energy and other fields, it is expected that the average annual demand growth rate of my country's precipitation silica (silicon dioxide) will be about 10% in the future. In 2015, Asia will become the largest market for highly dispersed silica, and its demand growth rate will be much higher than the global average growth rate of 9%, reaching 15% or higher. China accounts for 40% of the Asian market and will become the world's largest single market.