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Rubber composition for coating radial ply tyre steel wire cord

A technology of rubber composition and radial tires, which is applied in the field of rubber compositions coated with steel cords of radial tires, can solve the problems of affecting the bonding effect and unsatisfactory bonding strength, and achieve improved bonding performance, good viscosity, The effect of good adhesion

Inactive Publication Date: 2009-06-10
HAOHUA SOUTH CHINAGUILIN RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By compounding a specific amount of sulfur, resorcinol or its concentrate, a partial concentrate of hexamethylolmelamine pentamethyl ether or a partial concentrate of hexamethoxymethylolmelamine and Cobalt organic acid reduces the rate of decline in the adhesive performance of the rubber composition after aging, improves the adhesion to the steel cord to a certain extent, and inhibits the rubber composition from detaching from the steel cord when the tire is running. However, the system The resorcinol contained in it is easy to produce resinization, which affects its bonding effect, and the bonding strength of this rubber composition for steel cords with larger diameters is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) 120Kg natural rubber, 3Kg adhesive Manobond BPS produced by British Manchem Company (i.e. triazine adhesive), 12Kg VN3Gr silica, 1.2Kg cobalt boroacylate (wherein, the cobalt content is 0.27Kg), 40kg N375 carbon black, 10Kg zinc oxide, 1.2Kg stearic acid, 0.8Kg silane coupling agent Si69, 2.4Kg antiaging agent 6PPD, 1.2Kg antiaging agent HPG, 0.24Kg pentachlorothiophenol, 3.6Kg leveling agent 40MS, 3.6Kg ring Put the paraffin oil into the BB370 rubber internal mixer, mix at 60-80°C at a speed of 40 rpm for 3 minutes, and control the discharge temperature at 145-155°C to obtain compound A;

[0024] 2) Mix 16.7kg N375 carbon black with rubber compound A, mix in BB370 rubber internal mixer at 60-80°C at a speed of 40 rpm for 2.5 minutes, control the discharge temperature at 135-145°C, Obtain rubber compound B;

[0025] 3) Mix 1.5Kg sulfenamide accelerator DCBS, 0.1Kg anti-scorch agent CTP, 5Kg insoluble sulfur with compound B, and mix in GK270 rubber internal mixer at ...

Embodiment 2

[0040] 1) 96Kg of natural rubber, 24Kg butadiene rubber, 2.4Kg of the adhesive Bonding agent TZ (i.e. triazine adhesive) produced by Uniroyal Corporation of the United States, 13Kg of 175GR white carbon black, 0.75Kg of cobalt caprate (wherein, containing cobalt 0.15Kg), 0.75Kg cobalt boroacylate (of which the cobalt content is 0.17Kg), 38.4kg N330 carbon black, 12Kg zinc oxide, 1.3Kg PK900, 1.8Kg anti-aging agent 6PPD, 1.8Kg anti-aging agent HPG, 0.2 Kg pentachlorothiophenol, 3.6Kg aromatic hydrocarbon oil, 3.6Kg leveling agent 40MS were put into BB370 rubber internal mixer, mixed at 60-80°C for 3 minutes at a speed of 40 rpm, and the debinding temperature was controlled at 145 ~155°C, to obtain rubber compound A;

[0041] 2) Mix 16kg N330 carbon black with rubber compound A, mix in a BB370 type rubber internal mixer at 60-80°C at a speed of 40 rpm for 2.5 minutes, and control the discharge temperature at 135-145°C to obtain Compound B;

[0042] 3) Mix 1.2Kg of sulfenamide ...

Embodiment 3

[0044] 1) 96Kg natural rubber, 12Kg butadiene rubber, 12Kg styrene-butadiene rubber, 2.8Kg British Manchem company produced adhesive Manobond BPS (i.e. triazine adhesive), 18Kg VN3Gr white carbon black, 1.5Kg boroacylated cobalt (Wherein, the cobalt content is 0.34Kg), 40kgN326 carbon black, 2.4Kg stearic acid, 9.6Kg zinc oxide, 1.5Kg silane coupling agent Si69, 1.2Kg multifunctional additive DL-268, 1.2Kg anti-aging agent DTPD, 1.2Kg anti-aging agent 6PPD, 1.2Kg anti-aging agent HPG, 0.2Kg pentachlorothiophenol, 3.6Kg aromatic hydrocarbon oil, 3.6Kg leveling agent 40MS were put into BB370 rubber internal mixer, at 60-80°C at 40 rpm After 3 minutes of mixing and debinding at the rotating speed, the temperature is controlled at 145-155°C to obtain the mixed rubber A;

[0045] 2) Mix 16.7kg N326 carbon black with rubber compound A, mix in BB370 rubber internal mixer at 60-80°C at a speed of 40 rpm for 2.5 minutes, control the discharge temperature at 135-145°C, Obtain rubber co...

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PUM

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Abstract

The present invention discloses a rubber composition used for coating steel wire cords of radial ply tyres, which comprises: 1) a rubber component containing natural rubber, or the natural rubber and cis-butadiene rubber, or the natural rubber and butadiene styrene rubber, or the natural rubber, the cis-butadiene rubber and the butadiene styrene rubber; and 2) an adhesion system comprising 0.5 to6 weight portions of triazine adhesive, 5 to 20 weight portions of white carbon black and organic acid cobalt salt with 0.03 to 1 weight portion of cobalt which take 100 weight portions of the rubbercomponent as a reference. On the basis of 100 weight portions of the rubber component, the rubber composition also comprises various auxiliary agents. The rubber composition used for coating the steel wire cords of the radial ply tyres has good viscosity, liquidity and penetrability, is not only suitable for the steel wire cords of ordinary all-steel load or all-steel engineering radial ply tyres, but also particularly suitable for large-diameter steel wire cords of which the diameter is larger than 2 millimeters.

Description

(1) Technical field: [0001] The present invention discloses a rubber composition, especially a rubber composition for coating steel cords of radial tires. (two) background technology: [0002] Steel cords are often used as materials to enhance the mechanical properties and dimensional stability of radial tires. The adhesion between steel cords and the rubber composition coated thereon directly affects the performance and service life of radial tires. In order to improve the bonding strength between the steel cord and the rubber composition, researchers continue to explore ways to obtain good bonding performance between the steel cord and the rubber composition. The method for improving the adhesive force between the rubber composition and the steel cord commonly used at present is to add an adhesive system composed of a methylene acceptor and a methylene donor in the rubber composition, such as the application number of : 200510007058.x, the invention patent named "Rubber C...

Claims

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Application Information

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IPC IPC(8): C09D107/00C09D7/12B05D7/20C09D109/00C09D109/06
Inventor 周胜何桂德许光明
Owner HAOHUA SOUTH CHINAGUILIN RUBBER
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