Rubber composition for tire bead ring

A technology of rubber composition and steel traveler, which is applied in the field of rubber, can solve the problems of ring part bursting, empty ring, ring cracking, etc., and achieve the effects of reducing shear deformation, increasing high modulus, and improving rigidity

Active Publication Date: 2015-03-11
TRIANGLE TIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There will be a small shear strain in the rubber covering, and the strain will gradually expand, causing damage problems such as ring burst, ring void, ring crack, etc.

Method used

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  • Rubber composition for tire bead ring
  • Rubber composition for tire bead ring

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] Below in conjunction with embodiment the present invention will be further described:

[0014] Table 1: Invention Formula Coordination Table (Example, unit: parts by weight)

[0015]

[0016] Table 2: Formulation Physical Properties

[0017]

[0018] It can be seen from the examples that the tensile strength, hardness, and pulling force of the 1.65mm steel wire of the present invention are improved, especially after aging.

[0019] The raw rubber of the present invention mainly adopts styrene-butadiene rubber, because styrene-butadiene rubber has high rigidity and strong deformation resistance, and a small amount of natural rubber can be added to improve processing performance, because natural rubber has good process performance and good viscosity, and other raw rubbers use high-styrene resins Instead, it can provide high strength, high modulus, and high adhesion. Carbon black can be used in general-purpose carbon black series, such as N660, which can improve th...

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PUM

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Abstract

The invention relates to the technical field of rubber, in particular to a rubber composition for a tire bead ring. The rubber composition is characterized by being prepared from the following raw materials in parts by weight through mixing: 0-40 parts of natural rubber, 60-100 parts of butadiene styrene rubber, 5-40 parts of high styrene resin, 60-120 parts of carbon black, 0-15 parts of reinforcing phenolic resin, 3.0-5.0 parts of zinc oxide, 1.0-3.0 parts of stearic acid, 5-15 parts of tackifying resin, 0.5-1.5 parts of protecting wax, 15-25 parts of sulphur powder, 10-25 parts of softening oil, 0.8-1.5 parts of an accelerant DM and 0.1-0.2 part of an accelerant DPG. According to the rubber composition, under the condition that the structure of the tire bead ring keeps unchanged, the adhesive force of the bead ring modulus and coating is improved, and the problems of tire wiredrawing explosion, bead hollowness and bead break are solved.

Description

[0001] technical field [0002] The invention relates to the technical field of rubber, in particular to a rubber composition used for tire bead rings. [0003] Background technique [0004] At present, in pneumatic tires, the steel traveler acts as a radial constraint on the carcass ply. After the tire is inflated, each steel cord in the carcass ply produces a tension that is balanced with the internal pressure. At the bead position, the radial force of the tension is balanced by the binding force generated by the corresponding strain of the bead ring. The generation of radial constraint force is inseparable from the circumferential tension of the traveler. The size of the traveler stress is directly related to the safety and life of the tire. How to reduce the stress of the traveler, improve the uniformity of stress distribution, and improve the utilization rate of the force of the traveler are important for improving tire quality, improving tire safety and prolonging se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08L61/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06
CPCC08L9/06B60C1/00C08L2205/035C08L2205/02C08L7/00C08L9/08C08L91/00C08L91/06C08L13/02C08K3/04C08K2003/2296C08K5/09C08K3/06C08L61/06
Inventor 林科韩菁李华美王宝江常跃峰丁超
Owner TRIANGLE TIRE
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