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Heat-resistant tread rubber for large skew construction machinery tire

A technology for construction machinery and tread rubber, used in special tires, tire parts, transportation and packaging, etc., can solve the problem of less heat-resistant tread rubber, and achieve the effect of improving heat generation performance and enhancing heat-resistant aging performance.

Inactive Publication Date: 2014-03-19
CHEMCHINA GUILIN TIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the heat-resistant tread compound of bias-ply OTR tires, especially for the heat-resistant tread compound of giant bias-ply OTR tires

Method used

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  • Heat-resistant tread rubber for large skew construction machinery tire
  • Heat-resistant tread rubber for large skew construction machinery tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Carry out rubber mixing by each component specified in the following table 2, preparation method:

[0043] 1) Take by weighing natural rubber wherein, N220 carbon black, white carbon black, silane coupling agent, zinc oxide, stearic acid, antioxidant 4010NA, antioxidant RD and protective wax drop into rubber internal mixer (rotor speed is 40r / min), mixed for 4min at a speed of 40r / min at 160°C to obtain rubber compound A;

[0044] 2) Weigh the sulfur, vulcanizing agent DTDM, accelerator CZ and anti-scorch agent CTP according to the formula, put them into a rubber internal mixer and mix them with compound rubber A, and mix them at 100°C at a speed of 20r / min for 3min , that is, to obtain the heat-resistant tread rubber for giant bias-ply OTR tires.

[0045] The performance tests of the obtained rubber compounds are carried out, and the test results are listed in Table 2.

Embodiment 2

[0047] Carry out rubber mixing by each component specified in the following table 2, the preparation method of rubber material is the same as embodiment 1.

[0048] The performance tests of the obtained rubber compounds are carried out, and the test results are listed in Table 2.

Embodiment 3

[0050] Carry out rubber mixing by each component specified in the following table 2, the preparation method of rubber material is the same as embodiment 1.

[0051] The performance tests of the obtained rubber compounds are carried out, and the test results are listed in Table 2.

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Abstract

The invention discloses a heat-resistant tread rubber for large skew construction machinery tire. The heat-resistant tread rubber is prepared from the components in parts by weight: 100 parts of natural rubber, 25-35 parts of N220 carbon black, 15-30 parts of white carbon black, 2-4 parts of silane coupling agent, 3-7 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of antioxidant 4010NA, 1-3 parts of antioxidant RD, 1-2.5 parts of protective wax, 1-2 parts of sulphur, 0.5-1.2 parts of vulcanizing agent DTDM, 0.6-1.2 parts of accelerator CZ and 0.1-0.5 part of scorch retarder CTP. With the adoption of a rubber material prepared by a formula disclosed by the invention, rubber material has the excellent characteristic of thermal aging resistance when the generated heat of the rubber material is lowered.

Description

technical field [0001] The invention relates to tires, in particular to heat-resistant tread rubber for giant bias engineering machinery tires. Background technique [0002] Giant bias OTR tires are generally used in large open-pit mines. The surface temperature of mines in tropical areas or in summer is as high as 70-80°C. Due to the large number of plies of giant bias OTR tires and the load of giant bias OTR tires Large, short transport distance, many turns, and 24-hour continuous operation make it difficult to dissipate heat. Existing studies have shown that if the tire temperature exceeds 121 °C, the rubber compound strength drops to about 55% at room temperature, the nylon cord strength drops to 54% to 68% at room temperature, and the interface bonding strength drops to 53% at room temperature. . Therefore, if it is used at this high temperature for a long time, it will easily lead to tire tread chipping, side voids and shoulder voids. How to reduce the heat generati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09C08K5/18C08K5/3437C08K5/47B60C1/00
Inventor 李明枝
Owner CHEMCHINA GUILIN TIRE
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