Isophthalic dihydrazide-contained tread rubber composition for radial tire and preparation method thereof

A technology of isophthalic hydrazide and rubber composition, applied in the field of tire rubber, can solve the problems of high energy loss, large dynamic heat generation, unsatisfactory tire service life, etc., to reduce energy loss, improve service life, reduce The effect of small dynamic heat generation

Inactive Publication Date: 2019-01-22
TRIANGLE TIRE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of the existing giant OTR tire, the dynamic heat generation is large, the energy loss is high, and the service life of the tire is not ideal

Method used

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  • Isophthalic dihydrazide-contained tread rubber composition for radial tire and preparation method thereof

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Embodiment Construction

[0014] The IDH has a high-efficiency active group, a melting point of 224° C., and a specific gravity of 1.344 g / cm, which can significantly improve the elasticity of the rubber material and reduce the heat generation of the rubber material.

[0015] The reaction mechanism between IDH and natural rubber is as follows:

[0016]

[0017] The preparation steps of the present invention are as follows:

[0018] One-stage mixing: Start the internal mixer (GK400), set the rotor speed of the internal mixer to 50-55rpm, add rubber, stearic acid, zinc oxide, IDH and mix for 10-60s; raise the bolt, add carbon black to press the bolt, Mix for 20-150s, raise the plug, add petroleum-based plasticizer, press the plug, knead for 30-70s; knead for 30-160s, control the temperature at 155-165°C to remove glue;

[0019] Parking for the first time: put a section of masterbatch obtained by mixing in the air, and cool it down to room temperature naturally;

[0020] Two-stage mixing: Start the i...

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PUM

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Abstract

The invention relates to the technical field of tire rubber, and particularly discloses an isophthalic dihydrazide-contained tread rubber composition for a radial tire and a preparation method thereof. The isophthalic dihydrazide-contained tread rubber composition is prepared from the following raw materials in parts by weight: 100 parts of polyisoprene, 30 to 50 parts of carbon black, 2 to 10 parts of a petroleum plasticizer, 5 to 20 parts of silicon dioxide, 1 to 3 parts of stearic acid, 2 to 5 parts of zinc oxide, 1 to 4 parts of protective wax, 1 to 3 parts of a silane coupling agent, 0.2to 1 part of isophthalic dihydrazide, 0 to 3 parts of N-tert-butyl-2-benzothiazolyl sulfenamide, 1 to 3 parts of N,N'-dimethyl-p-phenylenediamine, 1 to 4 parts of sulfur powder and 0.1 to 1 part of ascorch retarder, and is prepared through mixing.

Description

technical field [0001] The invention relates to the technical field of tire rubber, in particular to a giant engineering radial tire tread rubber composition containing isophthalic hydrazide. Background technique [0002] As we all know, giant OTR tires have high requirements on the overall durability, heat generation performance and rubber strength of the tire due to its thicker section size, larger load and harsh working environment. The heat accumulated by the tire during use is not easy. Excessive heat accumulation will lead to delamination failure of the tire, and reducing the heat generation of the tire is particularly important to improve the service life of the tire. Therefore, as a rubber composition used for tire treads, etc., it needs to have a lower tanδ. In addition, the rubber composition used for the tread also needs to have good wear resistance. In the production process of the existing giant OTR tire, the dynamic heat generation is large, the energy loss is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L91/06C08K13/02C08K5/25C08K3/04C08K3/36C08K5/09B60C1/00
CPCB60C1/0016C08L7/00C08L91/06C08K13/02C08K5/25C08K3/04C08K3/36C08K5/09
Inventor 刘娟高利刘亮亮曲淼张恩华
Owner TRIANGLE TIRE
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