White carbon black rubber composition capable of prolonging scorching time, mixing method of white carbon black rubber composition and tire

A technology for rubber composition and scorch time, which is applied to the white carbon black rubber composition and its mixing method and the field of tires, can solve the problems of shortened scorch time and poor processing performance of the rubber composition, and achieves inhibition of mercapto reaction. The effect of reactivity, viscosity reduction, and improvement of rubber scorch performance

Pending Publication Date: 2022-03-29
ZHONGCE RUBBER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using such silanes, the scorch time of the rubber composition will be greatly shortened, and the processability will be deteriorated

Method used

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  • White carbon black rubber composition capable of prolonging scorching time, mixing method of white carbon black rubber composition and tire
  • White carbon black rubber composition capable of prolonging scorching time, mixing method of white carbon black rubber composition and tire
  • White carbon black rubber composition capable of prolonging scorching time, mixing method of white carbon black rubber composition and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0033] The processes of Examples 1-3, Comparative Example 2, and Comparative Example 3 are as follows: a two-stage mixing process and a three-stage final refining process are adopted.

[0034] Examples 1-3, Comparative Example 2, and Comparative Example 3 were mixed in one stage: a German Krupp GK320-E550 series internal mixer was used for mixing. The specific process steps of the mixing process are shown in Table 3.

[0035] Table 3 Embodiment 1-3, comparative example 2, comparative example 3 one stage mixing process

[0036]

[0037]

Embodiment 1

[0038] Example 1, Comparative Example 2, and Comparative Example 3 Two-stage mixing: German Krupp GK320-E550 series internal mixer was used for mixing. The specific process steps of the mixing process are shown in Table 4.

Embodiment 1-3、 comparative example 2

[0039] Embodiment 1-3, comparative example 2, comparative example 3 two-stage mixing process

[0040]

[0041] Embodiment 1, Comparative Example 2, Comparative Example 3 final refining section process: consistent with the comparative example final refining section process, the difference is the addition of 1,6-bis(N,N-dibenzothiazolecarbamoyl disulfide) - hexane;

[0042] The comparative examples and the examples are compared with the rheological properties, physical and mechanical properties, dynamic properties, and processing properties respectively, and obtain two different final refining processes and the impact on the performance of the rubber composition after adding auxiliary agents:

[0043] Table 5 Embodiment 1-3 and comparative example 1, comparative example 2, comparative example 3 rheological and processing characteristics contrast

[0044]

[0045] It can be seen from Table 5 that only through the adjustment of the mixing process in Comparative Example 2, t...

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Abstract

The invention belongs to the field of application of new materials in the production and manufacturing industries of tires, automobiles and the like, and particularly relates to a white carbon black rubber composition for prolonging scorching time, a mixing method thereof and a tire. The invention relates to a white carbon black rubber composition capable of prolonging scorching time. The rubber composition is prepared by mixing the following raw materials: a basically unsaturated diene rubber elastomer; a reinforcing filler system comprising white carbon black; a mercapto silane coupling agent; the rubber composition further comprises the following raw materials: n-octyltriethoxysilane and 1, 6-bis (N, N-dibenzothiazole carbamyl disulfide)-hexane, and the rubber composition also comprises the following raw materials: n-octyltriethoxysilane and 1, 6-bis (N, N-dibenzothiazole carbamyl disulfide)-hexane. When the rubber composition is mixed, n-octyltriethoxysilane and 1, 6-bis (N, N-dibenzothiazole carbamyl disulfide)-hexane are added, so that other properties of the rubber composition are ensured, and meanwhile, the scorching problem of the rubber composition which takes white carbon black as a main filler and uses sulfydryl silane can be effectively improved.

Description

technical field [0001] The invention belongs to the application field of new materials in tire, automobile and other manufacturing industries, and in particular relates to a white carbon black rubber composition prolonging scorch time, a mixing method thereof and tires. Background technique [0002] The scorch of rubber refers to the early vulcanization phenomenon of rubber during processing. Generally speaking, the longer the scorch time of rubber, the longer the operation safety and storage period of the rubber composition. In the tire industry, organic acids, nitroso compounds and thioimide compound anti-scorch agents are generally added in the final refining section, which can prolong the scorch time of the rubber composition within a certain range. [0003] With the proposal of the green tire concept, silica (called white carbon black in the industry) is widely used in the tire field due to its unique low rolling resistance and high wet grip. Silica compounds have slig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08K7/26C08K5/5419C08K5/47C08K5/548C08K5/40C08K3/06B29C35/02B29B7/82B29B7/74
CPCC08L9/06B29B7/7466B29B7/823B29C35/02C08L7/00C08K7/26C08K5/5419C08K5/47C08K5/548C08K5/40C08K3/06
Inventor 任会明张建军黄大业陈生王丹灵
Owner ZHONGCE RUBBER GRP CO LTD
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