The car's tires are made of rubber. Is that right?
In addition to hydrocarbons, you may also hear that sulfur is contained in the tires. In fact, the remnant of the vulcanization of the rubber at this time. After polymerization, the main polymer is a linear polymer long chain. Such rubber usually poor performance, not easy to shape, become soft heat, cold harden, brittle, easy to wear and aging. Vulcanization is a process for improving the properties of rubber. Vulcanization process of rubber
As for the black face of the tire, it was because of the addition of carbon black in the rubber. Carbon black has excellent reinforcing property to rubber, which can give good wear resistance of tire. But now, besides carbon black, there is a better reinforcing agent, silica. The successful launch of Michelin green tire in 1992, as a partial replacement of silica soot into the tire tread, silicon helps without lowering the tire grip (especially on slippery road) and wear resistance under the premise of reducing rolling resistance.
First of all, natural rubber, rubber is divided into natural rubber and synthetic rubber, natural rubber mainly from the Hevea tree, it is a flexible hydrocarbon, isoprene polymer. But now more than 60% of the world's rubber products are artificially synthesized through the petrochemical industry. In rubber applications, the largest amount of tires, natural and synthetic rubber of about 60% used to make tires. Now the car tires used in rubber are styrene butadiene rubber (SBR), it is mixed with natural rubber used in the manufacture of tread; polybutadiene rubber (PolyButadiene), and styrene butadiene rubber and natural rubber hybrid manufacturing tread, and natural rubber hybrid manufacturing sidewall, bending life better abrasion resistance and longer; in addition, butyl rubber (Butyl), used in the manufacture of tube and inner liner
