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Cut-resistant all-steel engineering tire tread rubber material and preparation method and application thereof

A technology for engineering tires and tread rubber, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of decreased tear strength, decreased and reduced tread life of engineering tires, etc., to improve cutting resistance, etc. performance, improved dispersion performance, and the effect of convenient operation

Active Publication Date: 2016-11-02
HANGZHOU CHAOYANG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The local strong repeated force reduces the physical bonding points in the tread compound, and at the same time, the carbon black aggregates and some rubber molecular chains form layered anisotropy; this anisotropic structure formed by both microstructure and macrostructure As a result, the tear strength of the circumferential region parallel to the layered structure decreases, and the damage develops along the rubber layer with increased free volume and the lowest strength in the layered anisotropic structure, forming a kind of interlayer failure of layered peeling, and finally Resulting in a reduction in the tread life of OTR tires

Method used

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  • Cut-resistant all-steel engineering tire tread rubber material and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0041] A cut-resistant all-steel engineering tire tread formula and its preparation method, the formula is as follows (in parts by weight): 100 parts of styrene-butadiene rubber, 2.5 parts of bentonite, 50 parts of carbon black N234, 5 parts of zinc oxide, stearic acid 1 part, 10 parts of environmental protection oil, 1 part of 6PPD, 2 parts of antioxidant RD, 1.8 parts of sulfur, 1.9 parts of accelerator CZ.

[0042] The preparation method is carried out as follows:

[0043] a) Put bentonite, carbon black N234 and styrene-butadiene rubber into the internal mixer according to a certain proportion, the rotation speed is 40~80rpm, slow first and then fast, deglue at 135°C, and get it after the sheet is discharged on the open mixer Glue ready for use.

[0044] b) Put the rubber material in a) (the ratio of styrene-butadiene rubber / carbon black N234 / bentonite in the rubber material is 100 / 50 / 2.5, in parts by weight) into the internal mixer for mastication for 30~40s, and knead T...

Embodiment 2

[0050] A cut-resistant all-steel engineering tire tread formula and its preparation method, the formula is as follows (in parts by weight): 100 parts of styrene-butadiene rubber, 3 parts of bentonite, 50 parts of carbon black N234, 5 parts of zinc oxide, stearic acid 1 part, 10 parts of environmental protection oil, 1 part of 6PPD, 2 parts of antioxidant RD, 1.8 parts of oil-extended sulfur, and 1.9 parts of accelerator CZ.

[0051] The preparation method of the above tread formula is the same as in Example 1, wherein the ratio of styrene-butadiene rubber / carbon black N234 / bentonite in the compound obtained in step a) is 100 / 50 / 3, in parts by weight.

Embodiment 3

[0053] A cut-resistant all-steel engineering tire tread formula and its preparation method, the formula is as follows (in parts by weight): 100 parts of styrene-butadiene rubber, 1.5 parts of bentonite, 50 parts of carbon black N220, 5 parts of zinc oxide, stearic acid 1 part, 11 parts of environmental protection oil, 1 part of 6PPD, 2 parts of antioxidant RD, 1.8 parts of oil-extended sulfur, and 1.9 parts of accelerator CZ.

[0054] The preparation method is carried out as follows:

[0055] a) Put bentonite, carbon black N220 and styrene-butadiene rubber into the internal mixer according to a certain proportion, the rotation speed is 40~80rpm, slow first and then fast, and deglue at 135°C, and the obtained after the sheet is discharged on the open mixer Glue ready for use.

[0056] b) Put the rubber material in a) (the ratio of styrene-butadiene rubber / carbon black N220 / bentonite in the rubber material is 100 / 50 / 1.5, in parts by weight) into the internal mixer for masticati...

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Abstract

The invention relates to the field of tire rubber formula, especially to a cut-resistant all-steel engineering tire tread rubber material and a preparation method and application thereof. The tread rubber material is prepared from raw materials which contain the following ingredients (by weight): 100 parts of styrene-butadiene rubber, 0.1-3.5 parts of bentonite, 45-60 parts of carbon black, 2-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 9-12 parts of environment-friendly oil, 0.5-2 parts of 6PPD, 1-3 parts of an anti-aging agent RD, 1-3 parts of oiled sulphur and 1-3 parts of an accelerant CZ. By preblending bentonite, styrene-butadiene rubber and carbon black, dispersibility is raised. In comparison with wet blending in a solution, the preblending in the invention is more convenient to operate. By adding a few amount of bentonite into the bentonite / carbon black / styrene-butadiene rubber composite material and by the characteristics of the bentonite sheet material and by synergism of the bentonite sheet material and carbon black, properties such as cut resistance of the engineering tire tread rubber material are improved.

Description

technical field [0001] The invention relates to the field of tire compound formulations, in particular to a cut-resistant all-steel engineering tire tread compound and its preparation method and application. Background technique [0002] The tread of engineering tires will often come into contact with sharp stones or roadside stones repeatedly under harsh and complex road conditions, and the tread rubber will tear and collapse. The local strong repeated force reduces the physical bonding points in the tread compound, and at the same time, the carbon black aggregates and some rubber molecular chains form layered anisotropy; this anisotropic structure formed by both microstructure and macrostructure As a result, the tear strength of the circumferential region parallel to the layered structure decreases, and the damage develops along the rubber layer with increased free volume and the lowest strength in the layered anisotropic structure, forming a kind of interlayer failure of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L91/00C08K13/02C08K3/34C08K3/04C08K3/22C08K5/09C08K5/47C08K5/3437B60C1/00
CPCB60C1/0016C08L9/06C08L91/00C08K13/02C08K3/346C08K3/04C08K2003/2296C08K5/09C08K5/47C08K5/3437
Inventor 杨尚毅陈家辉黄凯
Owner HANGZHOU CHAOYANG RUBBER