Styrene-butadiene asbestos heat-resisting composite rubber and preparation method thereof

• Main Authors: WANG LIFENG, ZHU XINGTAO, YAN SHULIANG, WAN DEFEN
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2012
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses styrene-butadiene asbestos heat-resisting composite rubber and a preparation method thereof. The styrene-butadiene asbestos heat-resisting composite rubber is prepared by styrene-butadiene rubber, chrysotile fiber and compounding agent as raw materials, wherein when the styrene-butadiene rubber is computed according to the mass m, the chrysotile fiber is 25-32%m; and the compounding agent comprises 4-6%m of zinc oxide, 1.8-2.2%m of stearic acid, 16-20%m of dibutyl phthalate, 1.8-2.2%m of N-phenyl-alpha-naphthylamine, 15-20m% of fumed silica, 0.6-0.8%m of 2- mercaptobenzothiazole, 2.5-3.5%m of dibenzothiazyl disulfide and 1.9-2.1%m of sulphur. The styrene-butadiene asbestos heat-releasing compound rubber can be obtained after plastifying, mixing and the like. The rubber has excellent aging resistance, ablation resistance and mechanical property; meanwhile, the preparation method is simple in operation so as to be suitable for mass production.