Piercing-resistant and tear-resistant tread base rubber and preparing method thereof
A tread base, anti-tearing technology, applied to tire parts, special tires, vehicle parts, etc. heat, improve puncture and tear resistance, improve reversion resistance and aging resistance
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Embodiment 1
[0021] A preparation method of puncture-resistant and tear-resistant tread base rubber, comprising the following steps:
[0022] (1) One-stage mixing: in parts by weight, 100 parts of natural rubber, 28 parts of N234 carbon black, 0.1 part of graphene oxide, 10 parts of HD175MP white carbon black, 2 parts of silane coupling agent Si69, 3.5 parts of zinc oxide 2. Put 2 parts of stearic acid into BB430 type internal mixer for plasticating for 120 seconds, the pressure of the top bolt is 5.5MPa, the rotor speed is 50r / min, the temperature of glue discharge is 160℃, a section of mixed rubber is obtained, and it is parked for 8 hours ;
[0023] (2) Two-stage mixing: the parked one-stage compound rubber, 6 parts of N234 carbon black, 1.5 parts of antioxidant RD, 2 parts of antioxidant 4020, 2 parts of phenol-modified dicyclopentadiene resin, and 1 part of Type B Put the microcrystalline wax into the BB430 type internal mixer and mix for 115 seconds. The pressure of the top bolt is ...
Embodiment 2
[0026] A preparation method of puncture-resistant and tear-resistant tread base rubber, comprising the following steps:
[0027] (1) One stage mixing: 100 parts of natural rubber, 30 parts of N220 carbon black, 0.2 parts of graphene oxide, 13 parts of HD175MP white carbon black, 2 parts of silane coupling agent Si75, 3.5 parts of zinc oxide, 2 parts of stearic acid Put it into a BB430 internal mixer for plasticating for 120 seconds, the pressure of the top bolt is 5.5MPa, the rotor speed is 50r / min, and the glue discharge temperature is 160°C to obtain a section of mixed rubber, which is parked for 10 hours;
[0028] (2) Two-stage mixing: put the parked first-stage compound rubber, 5 parts of N220 carbon black, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4020, 1 part of anti-aging agent 3100, and 3 parts of phenol-modified dicyclopentadiene Put the resin and 1.2 parts of B-type microcrystalline wax into the BB430 internal mixer for mixing, the pressure of t...
Embodiment 3
[0031] A preparation method of a puncture-resistant and tear-resistant all-steel radial tire tread base rubber, comprising the following steps:
[0032] (1) One stage mixing: 100 parts of natural rubber, 30 parts of N234 carbon black, 0.3 parts of graphene oxide, 7 parts of HD165MP white carbon black, 1 part of silane coupling agent Si69, 3.5 parts of zinc oxide, 2 parts of stearic acid Put it into a BB430 type internal mixer for plasticating for 120 seconds, the pressure of the top bolt is 5.5MPa, the rotor speed is 50r / min, and the glue discharge temperature is 160°C to obtain a section of mixed rubber, which is parked for 12 hours;
[0033] (2) Two-stage mixing: Put the parked first-stage compound rubber, 8 parts of N234 carbon black, 1 part of antioxidant RD, 2 parts of antioxidant 4020, 0.8 part of antioxidant 3100, and 3 parts of phenol-modified dicyclopentadiene Put the resin and 1 part of B-type microcrystalline wax into the BB430 type internal mixer and mix for 115 se...
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