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

The basic knowledge and application of silica are introduced below.

Silica is roughly divided into precipitation white carbon black and gas phase white carbon black according to production methods. Gas phase silica is normally white amorphous flocculent

Silica
Transparent solid colloidal nanoparticles (particle size less than 100nm), non-toxic, and have a large specific surface area. The fumed silica is all nano-silica, the purity of the product can reach 99%, and the particle size can reach 10-20nm, but the preparation process is complicated and the price is expensive; the precipitation silica is divided into the 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 basic raw materials, and the latter refers to the use of hypergravity technology, sol-gel method, chemical crystal method, secondary crystallization Silicon dioxide produced by special methods such as the inverse micellar microemulsion method or the like. Precipitated white carbon black is mainly used as a reinforcing agent for natural rubber and synthetic rubber, and a toothpaste friction agent. Fumed silica is mainly used as a reinforcing agent for silicone rubber, coatings and thickeners for unsaturated resins. Ultrafine silica gels and aerogels are mainly used as coating matting agents, thickeners, plastic film opening agents, etc.

Silica, as an environmentally friendly and excellent performance additive, is mainly used in the fields of rubber products (including high-temperature vulcanized silicone rubber), textiles, papermaking, pesticides, and food additives. Judging from the growth rate of white carbon black output in the four years from 2004 to 2008, the four-year compound growth rate is 13.3%. In 2009, there were more than 60 white carbon black production enterprises in China, with a production capacity of about 1 million tons and an output of 750,000 tons. China's production and sales ranked first in the world.

Benefiting from the growing demand in the tire manufacturing industry, silicone rubber industry, coating industry, new energy and other fields, it is estimated that the average annual growth rate of China's precipitation method white carbon black (silica) will be about 10% in the future. In 2015, Asia will become the largest market for highly dispersed white carbon black, 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 largest single market in the world