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Chopped Carbon Fiber Reinforced Engineering Retreaded Tire Tread Compound Technology

A technology of chopped carbon fiber and retreaded tires, applied in special tires, tire parts, tires, etc., can solve the problems of disintegration and falling blocks, easy to be punctured and worn, not fully considering the conditions of the tire use site, etc. Good effect, improve bond strength, enhance the effect of reactivity

Active Publication Date: 2019-02-19
HEILONGJIANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, my country's construction machinery tire retreading industry has developed extremely rapidly, but many domestic construction machinery tire retreading factories do not fully consider the tire use site when designing the retreading rubber formula and selecting raw materials, such as those working in terrace quarries or iron mines The retreaded tires of construction machinery vehicles often have problems such as chipping, puncture, and fast wear during the operation process, which leads to a low service life of retreaded tires for construction machinery. The price of construction machinery tires is thousands or even tens of thousands of RMB. , prolonging its life has a direct impact on the economy of engineering vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] The chopped carbon fiber reinforced engineering tire tread rubber process of the present embodiment includes the following steps:

[0020] Step 1. Surface treatment of chopped carbon fibers; carbon fibers are impregnated with 5% polydiphenylmethane diisocyanate in toluene solution, dried at 200°C for 1min, then coated with 10% rubber paste, and dried at 160°C for 2min ;min represents the time unit, minute;

[0021] Step 2, plasticizing process of tread rubber matrix:

[0022] Put the tread rubber matrix into the internal mixer and masticate for 4 minutes; min represents the time unit, minutes;

[0023] Step 3, tread rubber matrix mixing process:

[0024] At a temperature of 110±1°C, on a 6-inch double-roller internal mixer with a rotor speed of 40r / min, add chopped carbon fiber, tackifier and compounding agent, After operating the oil and vulcanizing agent, knead for 15 minutes. During the kneading, the chopped carbon fiber is evenly dispersed in the tread rubber mat...

specific Embodiment approach 2

[0028] The difference from Embodiment 1 is that in the chopped carbon fiber reinforced engineered tire tread rubber process of this embodiment, the chopped carbon fiber is selected as polyacrylonitrile-based carbon fiber, PAN, produced by Shanghai Jiufu Carbon Fiber Material Co., Ltd. , its diameter is 7.05um, the tensile strength is 3.56GPa, the tensile elastic modulus is 231.4Gpa, and the elongation at break is 1.62%.

specific Embodiment approach 3

[0029] The difference from Embodiment 1 or Embodiment 2 is that in the chopped carbon fiber reinforced engineered tire tread rubber process of this embodiment, when the mass fraction of chopped carbon fiber is 7%, the tensile strength and tear strength reach the maximum .

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Abstract

The invention discloses a short carbon fiber reinforcement engineering retreaded tire tread rubber process. Traditional engineering mechanical vehicle retreaded tires frequently generate such problemsas cracks, falling, easy puncture and fast wear, and are short in service life. The short carbon fiber reinforcement engineering retreaded tire tread rubber process is realized through the followingsteps: carbon fibers are dipped by methylbenzene solution with 5% of polydiphenylmethane diisocyanate, are dried by 1 min at 200 DEG C, are coated by using 10% of rubber paste, and are dried by 2 minat 160 DEG C; raw rubber basal bodies are added in a mixer for plastic mixing by 4 min; in the tread rubber mixing process, short carbon fibers and ingredients thereof are added in the mixer for mixing; when the temperature is reduced to about 60 DEG C after the mixing process, the carbon fibers are calendered as films; and then, the vulcanization is performed. The binding strength of the short carbon fibers and the rubber basal bodies can be improved, so that the service life of the retreaded tires is prolonged.

Description

Technical field: [0001] The invention relates to a technology for tread rubber of chopped carbon fiber reinforced engineering retreaded tires. Background technique: [0002] OTR tires generally work in harsh environments, such as uneven roads with sharp debris such as gravel, rocks, nails, and broken glass. The tires are heavily impacted by hard objects during work, and they often work continuously day and night. In addition, all kinds of construction machinery vehicles generally work in the open air, and the temperature difference between winter and summer varies greatly. Construction machinery tires have to withstand a wide range of temperature changes, and are exposed to wind, sun, and rain. The use characteristics of OTR tires require tire tread rubber to have excellent properties such as cutting resistance, fatigue resistance, wear resistance, high hardness, small deformation, and low heat generation. In recent years, my country's construction machinery tire retreading...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/54C08L7/00C08L9/06C08K9/04C08K7/06B60C1/00
CPCB29D30/54B60C1/0016C08L7/00C08L9/06C08K9/08C08K7/06
Inventor 王强齐晓杰姜莉杨兆王云龙
Owner HEILONGJIANG INST OF TECH