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A kind of self-healing rubber and preparation method thereof

A self-healing and rubber technology, applied in the field of rubber, can solve the problems of loss of use value, weak self-healing ability, crack expansion, etc., and achieve the effect of low cost, cheap raw materials, and simple preparation process

Active Publication Date: 2021-04-23
TAIZHOU CITY GANG YANG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of the existing rubber products, due to the weak self-repair ability, under the action of alternating stress, micro-cracks are prone to occur, and then the cracks expand and form damage, which eventually leads to material rupture and loss of use value. For this reason, we have designed a A kind of self-healing rubber and preparation method thereof to solve the above problems

Method used

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  • A kind of self-healing rubber and preparation method thereof

Examples

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Comparison scheme
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Embodiment 1

[0023] A self-healing rubber, comprising the following raw materials in parts by weight: 100 parts of a rubber matrix, 1 part of an unsaturated transfer agent, 1 part of zinc acrylate, 0.5 parts of an epoxy modifier, 0.2 parts of an antioxidant and 0.1 part of an antiaging agent.

[0024] It is worth noting that the unsaturated transfer agent is the first unsaturated transfer agent prepared by reacting 1,4-butanediol dimethacrylate with imidazole.

[0025] A preparation method of self-healing rubber, comprising the following steps,

[0026] S1, raw material configuration: prepare the first unsaturated transfer agent, and then weigh the corresponding weight of the rubber matrix, the first unsaturated transfer agent, zinc acrylate, epoxy modifier, antioxidant and anti-aging agent according to the weight ratio;

[0027] S2, preparation of self-healing auxiliary agent: the first unsaturated transfer agent and zinc acrylate form an auxiliary agent with self-healing function;

[00...

Embodiment 2

[0031] A self-healing rubber, comprising the following raw materials in parts by weight: 100 parts of a rubber matrix, 2 parts of an unsaturated transfer agent, 1.5 parts of zinc acrylate, 1 part of an epoxy modifier, 0.5 parts of an antioxidant and 0.3 parts of an antiaging agent.

[0032] It is worth noting that the unsaturated transfer agent is first reacted with glycerol and acryloyl chloride to obtain a compound containing three double bonds, and then reacted with imidazole to obtain the second unsaturated transfer agent.

[0033] A preparation method of self-healing rubber, comprising the following steps,

[0034] S1, raw material configuration: prepare the second unsaturated transfer agent, and then weigh the corresponding weight of rubber matrix, unsaturated transfer agent, zinc acrylate, epoxy modifier, antioxidant and anti-aging agent according to the weight ratio;

[0035] S2, preparation of self-healing auxiliary agent: the second unsaturated transfer agent and zin...

Embodiment 3

[0039] A self-healing rubber, comprising the following raw materials in parts by weight: 100 parts of a rubber matrix, 3 parts of an unsaturated transfer agent, 2 parts of zinc acrylate, 1.5 parts of an epoxy modifier, 0.8 parts of an antioxidant and 0.5 parts of an antiaging agent.

[0040] It is worth noting that the unsaturated transfer agent is first reacted with pentaerythritol and acryloyl chloride to obtain a compound containing four double bonds, and then reacted with imidazole to obtain a third unsaturated transfer agent.

[0041] A preparation method of self-healing rubber, comprising the following steps,

[0042] S1, raw material configuration: prepare the third unsaturated transfer agent, and then weigh the corresponding weight of rubber matrix, unsaturated transfer agent, zinc acrylate, epoxy modifier, antioxidant and anti-aging agent according to the weight ratio;

[0043] S2, preparation of self-healing auxiliary agent: the third unsaturated transfer agent and z...

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Abstract

The invention relates to the technical field of rubber, in particular to a self-repairing rubber and a preparation method thereof. The self-repairing rubber comprises the following raw materials in parts by weight: 100 parts of rubber matrix, 1-3 parts of unsaturated transfer agent, 1-2 parts of zinc acrylate, 0.5-1.5 parts of epoxy modifier, 0.2-0.8 parts of antioxidant and 0.1-0.5 parts of anti-aging agent. The preparation method includes the following steps, S1, raw material configuration; S2, preparation of self-repairing auxiliary agent; S3, preparation of rubber matrix Pretreatment; S4, self-healing rubber. In the present invention, the epoxy modifier is used to modify the rubber matrix first, and the unsaturated transfer agent and subsequent auxiliary agents are prepared through the breaking and rebonding of hydrogen bonds, which improves the self-repairing ability of the final prepared rubber. The self-repairing ability of the rubber prepared by the invention is up to 67%, and the preparation process is simple, the raw materials are cheap and easy to obtain, the cost is low, and the economic benefit is high.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a self-repairing rubber and a preparation method thereof. Background technique [0002] Rubber refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer, its glass transition temperature (T g) is low, and its molecular weight is often very large, greater than hundreds of thousands. Early rubber was latex taken from plants such as rubber trees and rubber grasses, which were processed into materials with elasticity, insulation, impermeability to water and air. High elastic polymer compound. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from rubber trees, rubber grass and other plants; synthetic ru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L21/00C08K5/098C08K5/1515
CPCC08K5/098C08K5/1515C08L7/00C08L21/00
Inventor 阚智谦林广义阚星辰
Owner TAIZHOU CITY GANG YANG RUBBER