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High abrasion-resistant tread rubber for middle and long distance highway transportation type radial tire and producing method thereof

A radial tire and road transport technology, applied in the field of tire tread rubber, can solve the problems of high wear resistance and insufficient all-natural rubber formula, achieve the effects of shortening mixing time, improving wear resistance, and reducing Mooney viscosity

Active Publication Date: 2011-04-27
JIANGSU GENERAL SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the raw rubber system in the tread formula of all-steel radial truck tires used on highways is all made of natural rubber. The formula is actually still based on the use of ordinary road surfaces, so it is suitable for tear resistance and cut resistance. , good traction; but the all-natural rubber formula is insufficient in adapting to the high wear resistance required by high-speed roads

Method used

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  • High abrasion-resistant tread rubber for middle and long distance highway transportation type radial tire and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: A kind of preparation method of high wear-resistant tread rubber, comprises the following process steps in parts by weight:

[0037] (1) One stage of mixing:

[0038] a. Raw rubber mastication: Add 90kg of natural rubber SMR20, 10kg of butadiene rubber and 0.2kg of peptizer SJ-103 into the mixing chamber of the internal mixer, and the raw rubber is masticated by rotating the rotor, and the plastic time is 20 seconds ;

[0039] b. Mixing: Add 12kg of N234 carbon black, 3kg of white carbon black, 0.5kg of silane coupling agent, 2kg of zinc oxide, 1kg of stearic acid, 0.5kg of dispersant FS-97 and 0.5kg of plasticizer into the mixing chamber Agent FS-200, mixed for 20 seconds; then added 12kg of N234 carbon black and mixed for 20 seconds;

[0040] c. Degumming to obtain a section of masterbatch, the degumming temperature is 135°C;

[0041] In steps a and b, the rotor speed is 40 rpm, the mixing pressure is 17MPa, the temperature of the mixing chamber is 35...

Embodiment 2

[0046] Embodiment 2: A kind of preparation method of high wear-resistant tread rubber, by weight parts, comprises the following process steps:

[0047] (1) One stage of mixing:

[0048] a. Raw rubber mastication: Add 70kg of natural rubber SMR20, 20kg of butadiene rubber, 10kg of styrene-butadiene rubber and 0.1kg of peptizer SJ-103 into the mixing chamber of the internal mixer, and perform raw rubber mastication through the rotation of the rotor. Plastic time is 40 seconds;

[0049] b. Mixing: Add 16kg of N234 carbon black, 5kg of white carbon black, 1kg of silane coupling agent, 3.5kg of zinc oxide, 2kg of stearic acid, 1kg of dispersant FS-97 and 1kg of plasticizer FS into the mixing chamber -200, mixed for 50 seconds; then added 16kg of N234 carbon black and mixed for 40 seconds;

[0050] c. Degumming to obtain a section of masterbatch, the degumming temperature is 150°C;

[0051] In steps a and b, the rotor speed is 50 rpm, the mixing pressure is 19MPa, the temperature...

Embodiment 3

[0056] Embodiment 3: A kind of preparation method of high wear-resistant tread rubber, by weight parts, comprises the following process steps:

[0057] (1) One stage of mixing:

[0058] a. Raw rubber mastication: Add 80kg of natural rubber SMR20, 10kg of butadiene rubber, 10kg of styrene-butadiene rubber and 0.2kg of peptizer SJ-103 into the mixing chamber of the internal mixer, and perform raw rubber mastication through the rotation of the rotor. Plastic time is 30 seconds;

[0059] b. Mixing: Add 18kg of N234 carbon black, 8kg of white carbon black, 1.5kg of silane coupling agent, 5kg of zinc oxide, 3kg of stearic acid, 2kg of dispersant FS-97 and 2kg of plasticizer FA into the mixing chamber -200, carry out mixing for 30 seconds; then add the N234 carbon black of 18kg and mix for 30 seconds;

[0060] c. Degumming to obtain a section of masterbatch, the degumming temperature is 140°C;

[0061] In steps a and b, the rotor speed is 45 rpm, the mixing pressure is 18MPa, the ...

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Abstract

The invention relates to a high abrasion-resistant tread rubber for a middle and long distance highway transportation type radial tire and a producing method of the tread rubber, wherein the producing method comprises the following processing steps:(1) first-stage mixing: adding nature rubber SMR20,butadiene rubber, butadiene styrene rubber and peptizer into a mixing chamber for raw rubber plastication, then adding N234 carbon black, white carbon black, a silane coupling agent, zinc oxide, stearic acid, a dispersing agent and a plasticizer for mixing, finally adding N234 carbon black for mixing, and obtaining the first-stage original rubber by discharging rubber; (2) standing for first time; (3) second-stage mixing: adding first-stage original rubber, the N234 carbon black, an anti-aging agent RD, an anti-aging agent 4020 and microcrystalline wax into an internal mixer for mixing, and obtaining second-stage original rubber by discharging rubber after the mixing; (4) standing for second time; and (5) final mixing: adding the second-stage original rubber, sulphur, an accelerator NS and a scorch retarder CTP (cytidine triphosphate) into the mixing chamber for mixing, and obtaining the tread rubber by discharging rubber. In the invention, the abrasion resistance of middle and long distance highway transportation type radial tires can be greatly enhanced, the producing and working efficiency is enhanced, and energy is greatly saved.

Description

technical field [0001] The invention relates to a tread rubber for tires, in particular to a high wear-resistant tread rubber for medium and long-distance road transport type radial tires and a preparation method thereof. Background technique [0002] With the continuous development of radial tires, its products are also constantly refined, and many radial tires for different road surfaces and different purposes have appeared. In the prior art, the raw rubber system in the tread formula of all-steel radial truck tires used on highways is all made of natural rubber. The formula is actually still based on the use of ordinary road surfaces, so it is suitable for tear resistance and cut resistance. , Traction is good; but the all-natural rubber formula is insufficient in adapting to the high wear resistance required by high-speed roads. With the continuous expansion of the highway network, the wear resistance of the tires is very high when the vehicle is running on the highway,...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/02C08K3/04C08K3/36C08K3/22B29B7/28B60C1/00
Inventor 丁振洪崔玉叶
Owner JIANGSU GENERAL SCI TECH
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