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A kind of rubber antioxidant and preparation method thereof

A technology of rubber anti-aging agent and amine anti-aging agent, which is applied in the field of rubber anti-aging agent, and can solve problems such as waste of anti-aging agent, weakening of aging effect, and environmental pollution

Active Publication Date: 2022-06-28
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Antiaging agents with different molecular structures have different molecular volumes due to different molecular weights, and then their mobility in the macromolecular network will be different, which will affect the mechanism of action of the antiaging agent in the rubber compound. The solvent extraction performance and migration speed will also be different, which will affect the anti-aging effect of the anti-aging agent
The migration of anti-aging agent not only weakens the aging effect, but also causes a waste of anti-aging agent, resulting in certain economic losses and pollution to the environment

Method used

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  • A kind of rubber antioxidant and preparation method thereof
  • A kind of rubber antioxidant and preparation method thereof
  • A kind of rubber antioxidant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Place CGE in the reactor, add amine antioxidant PPDA, and add a magnetic stirrer to control the effective reaction between CGE and amine antioxidant. The molar ratio of amino group is 1:1, the reaction temperature is controlled at 155 ° C, and the reaction is stirred for 3 hours. , stop heating to obtain product In step (1), control the stirring speed to be 150 rpm to obtain the final product.

[0029] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of Example 1 antioxidant, 4 parts of paraffin, 1.5 parts of accelerator CZ, and 2 parts of sulfur.

[0030] The SBR was uniformly blended on a two-roll mill, and the other ingredients except carbon black were added. After mixing uniformly, carbon black was added. The obtained mixed rubber was pressed and cut in a vulcanizer at 170°C to test its performance. The test results are shown in Table 1 and Table 2.

Embodiment 2

[0032] The CGE was placed in the reactor, the amine antioxidant was added, and a magnetic stirring bar was added to control the molar ratio of the amino group in the effective reaction between CGE and the amine antioxidant to be 1:1, and the reaction temperature was controlled to 160 ° C, and the reaction was stirred for 3 hours. Stop heating to obtain product In step (1), the stirring speed is controlled to be 150 rpm to obtain the final product.

[0033] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of Example 2 antioxidant, 4 parts of paraffin, 1.5 parts of accelerator CZ, and 2 parts of sulfur.

[0034] The SBR was uniformly blended on a two-roll mill, and the other ingredients except carbon black were added. After mixing uniformly, carbon black was added. The obtained mixed rubber was pressed and cut in a vulcanizer at 170°C to test its performance. The test results are shown in Table 1 and Table 2.

Embodiment 3

[0036] The CGE was placed in the reactor, the amine antioxidant was added, and a magnetic stirring bar was added to control the molar ratio of the amino group in the effective reaction between CGE and the amine antioxidant to be 1:1, and the reaction temperature was controlled at 165 ° C, and the reaction was stirred for 3 hours. Stop heating to obtain product In step (1), the stirring speed is controlled to be 150 rpm to obtain the final product.

[0037] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of Example 3 antioxidant, 4 parts of paraffin, 1.5 parts of accelerator CZ, and 2 parts of sulfur.

[0038] The SBR was uniformly blended on a two-roll mill, and the other ingredients except carbon black were added. After mixing uniformly, carbon black was added. The obtained mixed rubber was pressed and cut in a vulcanizer at 170°C to test its performance. The test results are shown in Table 1 and Table 2.

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Abstract

The invention discloses a rubber antioxidant and a preparation method thereof. The rubber anti-aging agent is prepared by reacting the carrier with the amine anti-aging agent. The carrier is mixed with the amine anti-aging agent, heated and stirred for reaction to obtain the rubber anti-aging agent. Compared with the traditional anti-aging agent, the rubber anti-aging agent prepared according to the above method still has certain mobility and mobility in the rubber network, so that the anti-aging agent has better stability, low mobility, Good anti-aging performance.

Description

technical field [0001] The invention relates to the field of rubber antioxidants, and more particularly, to a novel rubber antioxidant and a preparation method thereof. Background technique [0002] In the process of processing, storage and use of rubber, due to the comprehensive influence of internal and external factors, there will be aging phenomena such as softening, stickiness, hardening, cracking, brittleness, spots, mildew, loss of light, and color change. Agent is a substance that can prevent or delay the aging of rubber. [0003] P-phenylenediamine antioxidant is an excellent general-purpose antioxidant for natural rubber and synthetic rubber. It not only has excellent protective effect on ozone, but also has good protective effect on thermal oxygen, and also has good protective effect on metal ions such as copper and manganese. It has obvious passivation effect and is the most commonly used anti-aging agent in the tire industry. [0004] Antioxidants with differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L91/06C08K3/02C08K5/18C08K3/04C08K3/22C08K5/09C08K3/06
CPCC08L9/06C08K5/18C08L2201/08C08K2003/2296C08L91/06C08K3/02C08K3/04C08K3/22C08K5/09C08K3/06
Inventor 张立群樊轩胡国华王润国王文才孙敏利董兰郑文华刘毅
Owner BEIJING UNIV OF CHEM TECH
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