Rubber additives are generally divided into six categories.
The first category is vulcanization system additives, which mainly include vulcanizing agents, accelerators and activators.
Vulcanizing agents include: ① sulfur, selenium, tellurium; ② sulfur-containing compounds; ③ organic peroxy compounds; ④ quinone compounds; ⑤ amine compounds; ⑥ resins; ⑦ metal oxides; ⑧ other vulcanizing agents.
Accelerators include: ① dithiocarbamates; ② xanthate; ③ thiurams; ④ thiazoles; ⑥ sulfenamides; ⑦ amines and aldehyde amine condensates; ⑧ guanidines; ⑨ sulfur Urea.
Activators include: ① zinc oxide; ② magnesium oxide; ③ stearic acid, etc.
The second category is protective system additives, mainly antioxidants and flame retardants. Anti-aging agents mainly include amines, phenols, heterocyclics, phosphites, protective waxes, etc.
Amines include: ① naphthylamine series; ② quinoline series; ③ diphenylamine series; ④ p-phenylenediamine series.
Phenols include: ① Alkylated mononuclear phenols; ② Alkylated dinuclear phenols; ③ Alkylated polynuclear phenols.
There are also heterocyclics and phosphites.
Protective waxes include: microcrystalline wax, ozokerite, white wax, etc.
Flame retardants include: ① bromine series; ② chlorine series; ③ phosphorus series; ④ inorganic substances.
The third category is operating system additives, which mainly include plasticizers (softeners), dispersants, leveling agents, tackifiers, release agents and anti-scorch agents.
The fourth category is reinforcing filling system additives, which mainly include carbon black, white carbon black, inorganic reinforcing agents and fillers and organic reinforcing agents and fillers.
The fifth category is adhesive system additives, mainly including m-methyl-white system, cobalt salt adhesion accelerator, triazine adhesive, impregnated adhesive and adhesive.
The sixth category includes other additives, such as foaming agents, defoaming agents, colorants, fragrances, anti-fogging agents, anti-termite agents, lubricants, release agents, isolation pad treatment agents, and product surface modifications. agents and mold cleaning agents, etc.
