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Novel anti-aging agent as well as preparation method and application thereof

An anti-aging agent and a new type of technology, applied in the rubber field, can solve the problems of intolerant migration, intolerant of solvents, volatile antioxidants, etc., and achieve the effects of good anti-aging performance, good stability and avoiding environmental pollution.

Pending Publication Date: 2022-01-21
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing antioxidants have the disadvantages of being volatile, not resistant to migration, and not resistant to solvent extraction.

Method used

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  • Novel anti-aging agent as well as preparation method and application thereof
  • Novel anti-aging agent as well as preparation method and application thereof
  • Novel anti-aging agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of novel antioxidant GMA-g-PPDA

[0047] Glycidyl methacrylate GMA is placed in the reactor, and p-aminodiphenylamine (PPDA) is added at the same time, and the ratio of glycidyl methacrylate GMA to p-aminodiphenylamine PPDA is controlled to be 3:1, and the entire reactor is controlled The temperature is 75°C, keep stirring, continue to react for 3 hours, stop heating.

[0048] (2) Preparation of composite materials

[0049] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 8 parts of anti-aging agent of Example 1, 1.5 parts of accelerator CZ, 0.5 parts of accelerator DM, and 2 parts of sulfur. The SBR was evenly blended on a two-roll mill, and the obtained mixed rubber was pressed and cut into pieces in a vulcanizer at 150°C, and the properties were tested. The test results are shown in Table 1.

Embodiment 2

[0051] (1) Preparation of novel antioxidant GMA-g-PPDA

[0052]Glycidyl methacrylate GMA is placed in the reactor, and p-aminodiphenylamine (PPDA) is added at the same time, and the ratio of glycidyl methacrylate GMA to p-aminodiphenylamine PPDA is controlled to be 3:1, and the entire reactor is controlled The temperature was 85°C, and the reaction was continued for 3 hours while stirring, and the heating was stopped to obtain a crude product.

[0053] (2) Preparation of composite materials

[0054] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 8 parts of antioxidant in Example 2, 1.5 parts of accelerator CZ, 0.5 parts of accelerator DM, and 2 parts of sulfur. The SBR was evenly blended on a two-roll mill, and the obtained mixed rubber was pressed and cut into pieces in a vulcanizer at 150°C, and the properties were tested. The test results are shown in Table 1.

Embodiment 3

[0056] (1) Preparation of novel antioxidant GMA-g-PPDA

[0057] Put glycidyl methacrylate GMA in the reactor, and add p-aminodiphenylamine (PPDA) at the same time, control the ratio of glycidyl methacrylate GMA to p-aminodiphenylamine PPDA to be 3:1, and control the entire reactor The temperature is 95°C, keep stirring, continue to react for 3 hours, stop heating.

[0058] (2) Preparation of composite materials

[0059] Take 100 parts of SBR, 40 parts of carbon black N330, 5 parts of zinc oxide, 2 parts of stearic acid, 8 parts of anti-aging agent of Example 1, 1.5 parts of accelerator CZ, 0.5 parts of accelerator DM, and 2 parts of sulfur. The SBR was evenly blended on a two-roll mill, and the obtained mixed rubber was pressed and cut into pieces in a vulcanizer at 150°C, and the properties were tested. The test results are shown in Table 1.

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Abstract

The invention relates to a novel anti-aging agent and a preparation method and an application thereof, the novel anti-aging agent is a reaction product of p-aminodiphenylamine (PPDA) and an epoxy compound, the epoxy compound is a compound containing an epoxy group and double bonds, and the molar ratio of p-aminodiphenylamine to the epoxy compound is 1: (1-5), preferably 1: (2-4). The anti-aging agent can be used as the anti-aging agent for natural rubber or synthetic rubber. The novel anti-aging agent provided by the invention has lower migration performance and extraction resistance, and can prolong the service life of a rubber product and avoid environmental pollution; the migration rate of the novel anti-aging agent in rubber neutralization is lower than that of a traditional anti-aging agent, so that good stability, low migration rate and good later-stage anti-aging performance of the anti-aging agent can be better guaranteed.

Description

technical field [0001] The invention belongs to the field of rubber, and relates to a rubber anti-aging agent, in particular, to a novel anti-aging agent and its preparation method and application. Background technique [0002] The application range of rubber materials is extremely wide, involving many fields such as life, industry and military. However, most rubbers are unsaturated rubbers. There are a large number of carbon-carbon double bonds in the rubber structure, which makes it very easy to age, and aging phenomena such as softening, stickiness, hardening, brittleness, cracking, and loss of light appear. Adding anti-aging agent is considered to be the most convenient method to delay aging, because this method will not change the processing technology of rubber. As an important additive in the use of tires, anti-aging agents greatly affect the service life of tires. Therefore, if the service life of the tires can be extended, the replacement frequency of the tires ca...

Claims

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Application Information

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IPC IPC(8): C08K5/18C08L9/06C08K13/02C07C219/08C07C213/04
CPCC08K5/18C08K13/02C07C219/08C07C213/04C08K2201/014C08L2201/08C08L9/06
Inventor 王润国董兰王文才张立群胡国华黄源孙庆伟孙敏丽刘毅
Owner BEIJING UNIV OF CHEM TECH
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