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

Inactive Publication Date: 2019-11-05
JIANGSU GENERAL SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Some domestic construction machinery vehicles often drive on relatively bad roads. The base rubber at the bottom of the tire tread groove is easily pierced and cut by gravel, and the bottom of the groove will crack. The problem of crown explosion will greatly reduce the service life and safety performance of tires

Method used

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  • Piercing-resistant and tear-resistant tread base rubber and preparing method thereof

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Effect test

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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Abstract

The invention belongs to the technical field of rubber, and particularly relates to piercing-resistant and tear-resistant tread base rubber and a preparing method thereof. The piercing-resistant and tear-resistant tread base rubber is prepared by conducting primary mixing, secondary mixing and third mixing on natural rubber, carbon black, white carbon black, a silane coupling agent, an anti-ageingagent, graphene oxide, modified DCPD resin, zinc oxide, stearic acid, an accelerant, sulfur, an anti-reversion agent and a scorch retarder through an internal mixer. By applying the modified DCPD resin, the graphene oxide and the anti-reversion agent to the all-steel tire tread base rubber in proper proportion, the respective characteristics are complementary, the tear resistance, piercing resistance, ageing resistance and reversion resistance of the tread trench bottom base rubber in the use process of an all-steel tire can be improved, and therefore the service life of the all-steel tire isprolonged.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a puncture-resistant and tear-resistant tread base rubber and a preparation method thereof. Background technique [0002] Some domestic construction machinery vehicles often drive on relatively bad roads. The base rubber at the bottom of the tire tread groove is easily pierced and cut by gravel, and the bottom of the groove will crack. The problem of crown explosion will greatly reduce the service life and safety performance of tires. Therefore, in some areas where the use conditions are relatively harsh, the all-steel tire tread base rubber is required to have certain puncture-resistant and tear-resistant characteristics. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a puncture-resistant and tear-resistant tread base rubber and a preparation method thereof for the above-mentioned deficiencies in the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L57/02C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09C08K3/06B60C1/00
CPCB60C1/0016C08K2003/2296C08L7/00C08L57/02C08K13/02C08K3/04C08K3/042C08K3/36C08K3/22C08K5/09C08K3/06
Inventor 周平赵江华崔玉叶朱凉伟
Owner JIANGSU GENERAL SCI TECH
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