Ageing-resistant tire belt rubber composition

A technology of rubber composition and belt layer, which is applied in the field of rubber, can solve the problems of inconspicuous effect and little effect, and achieve the purpose of improving the adhesion between steel wire and rubber, increasing the service life, and improving the aging resistance Effect

Active Publication Date: 2012-09-26
TRIANGLE TIRE
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Problems solved by technology

At present, most of the existing technologies use the addition of ordinary anti-aging agents (such as 4020, RD, etc.) to improve the aging resistance of the

Method used

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  • Ageing-resistant tire belt rubber composition
  • Ageing-resistant tire belt rubber composition

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Embodiment Construction

[0009] Below in conjunction with embodiment the present invention will be further described:

[0010] The present invention is made of the following raw materials in parts by weight: natural rubber 100, carbon black 40-50, white carbon black 5-15, zinc oxide 6-10, anti-aging agent 4020 1.0-2.5, adhesive B-20- S 1.0-3.0, binder HMT 1.0-3.0, cobalt caprate 0.5-1.5, zinc borate 1.0-4.0, insoluble sulfur 4.0-7.0, vulcanization accelerator 1.0-2.0, anti-scorch agent CTP 0.2.

[0011] As a preference, the dosage of the zinc borate is preferably 1-4 parts.

[0012] Preferably, the vulcanization accelerator is shared by vulcanization accelerator DZ and vulcanization accelerator NS, DZ is 0.5-1 part, and NS is 0.5-1 part.

[0013] Insoluble sulfur is preferably HDOT20.

[0014] Adopt raw material component and content described in the present invention to be able to prepare by existing routine technology, concrete steps are:

[0015] The first stage of mixing: add natural rubber, ca...

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Abstract

The invention relates to the technical field of rubber, and in particular relates to an ageing-resistant tire belt rubber composition. Based on 100 parts by weight of natural rubber, the ageing-resistant tire belt rubber composition also contains 40-50 parts of carbon black, 5-15 parts of white carbon black, 6-10 parts of zinc oxide, 1.0-2.5 parts of age resister 4020, 1.0-3.0 parts of binding agent B-20-S, 1.0-3.0 parts of binding agent HMT (Hexamethylenetetramine), 0.5-1.5 parts of cobalt decanoate, 1.0-4.0 parts of zinc borate, 4.0-7.0 parts of insoluble sulfur, 1.0-2.0 parts of vulcanization accelerator and 0.2 part of scorch retarder CTP (Cytidine Triphosphate). The ageing resistance of a belt rubber material is improved by using the zinc borate. The zinc borate is a multifunctional boron-containing fire retardant which is capable of generating a glassy film after being heated and is coated on a polymer to play roles of insulating heat and blocking oxygen and particularly increasing the binding power between a steel wire and the rubber under various ageing conditions and prolonging the service life of a tire.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an aging-resistant tire belt rubber composition. Background technique [0002] As we all know, with the increasingly fierce market competition, consumers have higher and higher requirements on the quality of tires, and it is very important to improve the high-speed and durability performance of tires. The tire belt bears 60% to 75% of the entire internal stress of the tire. The strength, stiffness, adhesion to steel wire and aging resistance of the belt compound are directly related to the tire's aging resistance after long-term driving. service life. At present, most of the existing technologies use the addition of ordinary anti-aging agents (such as 4020, RD, etc.) to improve the aging resistance of the rubber compound, but the effect is not obvious, especially for the protection of the adhesion between the steel wire and the rubber after aging. Great effect. Contents of th...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08K13/02C08K3/38C08K3/04C08K3/36C08K3/22C08K5/098B60C1/00
Inventor 丁玉华单国玲董凌波崔轶刘谦张元赞刘娟
Owner TRIANGLE TIRE
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