ᱥᱤᱥᱴᱮᱢ ᱠᱚ ᱨᱮᱭᱟᱜ ᱢᱮᱴᱨᱤᱠᱥ

ᱢᱤᱫ ᱛᱚᱨᱠᱚ

Active agent is to improve the activity of accelerators, promote the vulcanization reaction of the vulcanization system agent, it is also known as promoting agent or vulcanization promoting active agent.The active agent is mainly composed of metal oxides and fatty acids, the most typical one is the combination of indirect zinc oxide (3-5 parts) and stearic acid (1-2 parts).Excessive release of zinc oxide in production, use and recovery of rubber products may cause adverse effects on the environment and human health, especially on aquatic plants and animals sensitive to zinc.At present, low zinc or zinc-free sulfide active agents (such as organic zinc, zinc oxide compound masterbatch, calcium oxide and magnesium oxide, etc.) are vigorously developed to partially replace zinc oxide.The results show that both organic zinc and core-shell structure zinc oxide can play the role of sulfide active agent, but the anti-vulcanization and physical properties of the rubber are not as good as those of the indirect method.