A kind of high wear-resistant green tire rubber composition and preparation method thereof
A technology of rubber composition and green tires, which can be applied to special tires, tire parts, transportation and packaging, etc., and can solve the problems of heavy environmental pollution, complicated operation, and high processing costs
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Embodiment 1
[0049] (1) Preparation of highly dispersed nano-silica:
[0050] a Preparation of grafted polystyrene: first add 100 parts of HIPS and 300 parts of xylene into the reaction kettle, and when heated to 50°C, stir for 5 hours. After the polystyrene is completely dissolved, add 5 parts of phthalic acid and 0.05 After stirring and reacting for 1 hr, add 5 parts of diethylhydroxylamine to terminate the reaction, filter and wash with suction to obtain polystyrene graft a (grafting rate 0.9%).
[0051] b Preparation of highly dispersed nano-silica: Take 100 parts of nano-silica (40nm), 5 parts of DINP, and 200 parts of cyclohexane into the polymerization kettle, heat up to 40 ° C, stir for 1 hr; then add 7 parts Polystyrene graft a, after stirring and reacting for 2 hours, was flash evaporated, dried and ground to obtain highly dispersed nano-silica.
[0052] (2) Preparation of grafted solution-polymerized styrene-butadiene mortar: first add 100 parts of xylene in the polymerization ...
Embodiment 2
[0055] (1) Preparation of highly dispersed nano-silica:
[0056] The preparation of a grafted polystyrene: with embodiment 1.
[0057] b Preparation of highly dispersed nano-silica: get 100 parts of nano-silica (40nm), 9 parts of DINP, and 260 parts of cyclohexane into the polymerization kettle, heat up to 45°C, and stir for 1.5hr; then add 12 Parts of polystyrene graft a, stirred and reacted for 2.5 hours, then flashed, dried and ground to obtain high-dispersion nano-silica.
[0058] (2) Preparation of grafted solution-polymerized styrene-butadiene mortar: with embodiment 1.
[0059] (3) Preparation of rubber composition for high wear-resistant green tire tread: take 100 parts of solution-polymerized styrene-butadiene mortar SSBR72612 (dry glue) and 350 parts of xylene and add them to the coagulation kettle and stir and mix for 35 minutes, then add 60 parts of high-strength Dispersed nano-silica and 5 parts of grafted solution-polymerized styrene-butadiene mortar a, when th...
Embodiment 3
[0061] (1) Preparation of highly dispersed nano-silica:
[0062]a Preparation of grafted polystyrene: first add 100 parts of HIPS and 400 parts of xylene into the reaction kettle, and when heated to 60°C, stir for 7 hours. After the polystyrene is completely dissolved, add 11 parts of phthalic acid and 0.3 After stirring and reacting for 3 hours, add 7 parts of diethylhydroxylamine to terminate the reaction, filter and wash to obtain polystyrene graft b (grafting rate 1.4%).
[0063] b Preparation of highly dispersed nano-silica: Get 100 parts of nano-silica (40nm), 11 parts of DINP, and 300 parts of cyclohexane into the polymerization kettle, heat up to 50°C, and stir for 2.0hr; then add 14 Parts of polystyrene graft b, stirred and reacted for 3.0 hr, then flash evaporated, dried, and ground to obtain high-dispersion nano-silica.
[0064] (2) Preparation of grafted solution-polymerized styrene-butadiene mortar: first add 100 parts of xylene in the polymerization kettle, then...
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