According to the EU labeling law, from November 2012, all new tires for cars and trucks sold in Europe must be affixed with an energy efficiency label, requiring tire manufacturers to strictly control fuel efficiency, wetland performance and rolling noise. At present, the EU, Japan, South Korea, Brazil, Saudi Arabia and other places around the world have enforced green tire labeling regulations, all of which put reducing tire rolling resistance in the first place, and the key to reducing tire rolling resistance is to rely on changes in the tread rubber formula, that is, to increase the silica content.

my country has not yet enforced green tire-related regulations, but due to the large-scale export of domestic tire companies overseas, they have been forced to promote greening by exports and began to develop and produce green tires. The increase in the penetration rate of green tires has driven the demand for highly dispersed silica.

The traditional silica particles produced by the domestic quartz sand-sulfuric acid precipitation method have poor roundness and poor pore distribution, resulting in poor dispersibility.

The imported traditional silica particles produced by the quartz sand-sulfuric acid precipitation method have good roundness, uniform pore distribution and good dispersibility.

The domestic rice husk-sulfuric acid precipitation method silica particles have uniform pore distribution and particle aggregation.

The rice husk-carbon dioxide method silica particles produced by Evolution Silicon Company have high roundness, uniform pore distribution and good dispersibility.