Anti-wear agent, sulfur, phosphorus, chlorine, organic polar compounds, such compounds at high pressure in the metal surface can not form a solid compound film, it is lower than the melting point, when the metal because of the friction node compression temperature increases, this layer compound film on the melt to generate a smooth surface, reducing friction and wear of metal surfaces. The type of anti-wear agents: organic chloride, organic sulfides, organic phosphorus compounds, organic metal salts. The unified symbol of the anti-wear agent: the "T3XX.

Anti-wear agent is an important lubricant additive. With the development of China's automobile industry and mechanical industry, anti-wear agents to show a good prospect.Antiwear agent sulfur-containing anti-wear agent, phosphorus anti-wear agent, chlorine-containing anti-wear agents, metallic anti-wear agent.

Sulfur anti-wear agents, more varieties, mainly including isobutylene sulfide, sulfide grease and trimester, xanthenes, trio-carbonate, dither carbonate and sulfur compounds. The vulcanization of is butylenes the best varieties of sulfur-containing anti-wear agent. The vulcanization of isobutylene in China with an annual output capacity of 1500 tons, not only to meet domestic needs, but also exported to foreign countries. In addition, Chinches also developed a multi-alkyl benzyl phenyl sulfide and sulfur compounds 5 (T324, T324A, T324B, T325 and T325A), the sulfur content of 10% to 38%.