Preparation method of modified rubber powder

A technology for modifying rubber and rubber powder, which is applied in the field of rubber and can solve the problems of further improvement in performance, achieve the effects of improving mechanical properties, improving wear resistance and mechanical properties, and avoiding internal agglomeration

Inactive Publication Date: 2021-05-25
清远高能结加改性材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rubber powder obtained after modification is used to prepare rubber products, and its performance needs to be further improved.

Method used

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  • Preparation method of modified rubber powder
  • Preparation method of modified rubber powder

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A preparation method of modified rubber powder, comprising the steps of:

[0044] (1) coarsely crushing waste and old natural rubber, removing impurities, and then pulverizing to further remove impurities to obtain 20 order rubber powder;

[0045] (2) Rubber powder obtains substance A under microwave action; The power of microwave is 200W, and the action time of microwave is 15min;

[0046](3) Add substance A into dichloromethane, heat to 30°C, the ratio of the volume of dichloromethane to the mass of rubber powder is 5mL / g, mix with initiator and modifier, filter after 2h, and dry in vacuum, that is have to;

[0047] The initiator is a mixture of benzoyl peroxide-N,N-dimethylaniline system and dimethyl azobisisobutyrate, benzoyl peroxide-N,N-dimethylaniline system (over The mass ratio of benzoyl oxide and N,N-dimethylaniline is 2:1), and the quality is 0.05% of the rubber powder quality, and the quality of dimethyl azobisisobutyrate is 0.01% of the rubber powder qual...

Embodiment 2

[0050] A preparation method of modified rubber powder, comprising the steps of:

[0051] (1) the waste styrene-butadiene rubber is coarsely crushed to remove impurities, and then pulverized to further remove impurities to obtain 150 order rubber powder;

[0052] (2) Rubber powder obtains substance A under microwave action; The power of microwave is 400W, and the action time of microwave is 30min;

[0053] (3) Add substance A into cyclohexane, heat to 70°C, the ratio of the volume of cyclohexane to the mass of rubber powder is 10mL / g, mix with initiator and modifier, filter after 1h, and dry in vacuum, that is have to;

[0054] The initiator is a mixture of benzoyl peroxide-N,N-dimethylaniline system and dimethyl azobisisobutyrate, benzoyl peroxide-N,N-dimethylaniline system (over The mass ratio of benzoyl oxide and N,N-dimethylaniline is 4:1), and the quality is 0.1% of the rubber powder quality, and the quality of dimethyl azobisisobutyrate is 0.04% of the rubber powder qua...

Embodiment 3

[0057] A preparation method of modified rubber powder, comprising the steps of:

[0058] (1) coarsely crushing waste and old natural rubber, removing impurities, and then crushing to further remove impurities to obtain 100 mesh rubber powder;

[0059] (2) Rubber powder obtains substance A under microwave action; The power of microwave is 300W, and the action time of microwave is 20min;

[0060] (3) Add substance A into toluene, heat to 100°C, the ratio of the volume of toluene to the mass of rubber powder is 8mL / g, mix with initiator and modifier, filter after 1.5h, and dry in vacuum to obtain final product;

[0061] The initiator is a mixture of benzoyl peroxide-N,N-dimethylaniline system and dimethyl azobisisobutyrate, benzoyl peroxide-N,N-dimethylaniline system (over The mass ratio of benzoyl oxide and N,N-dimethylaniline is 3:1), and the quality is 0.08% of the rubber powder quality, and the quality of dimethyl azobisisobutyrate is 0.02% of the rubber powder quality;

[...

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Abstract

The invention relates to the technical field of rubber, in particular to a preparation method of modified rubber powder, which comprises the following steps: (1) coarsely crushing waste rubber, removing impurities, conducting crushing again, and removing impurities to obtain rubber powder; (2) obtaining a substance A from the rubber powder under the action of microwaves; and (3) adding the substance A into an organic solvent, and conducting mixing with an initiator and a modifier, thereby obtaining the product, wherein the initiator is a mixture of a benzoyl peroxide-N, N-dimethylaniline system and dimethyl 2,2'-azobis(2-methylpropionate). The preparation method has the advantages that the process is simple, the production cost is low, and the prepared rubber product is excellent in mechanical property.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a preparation method of modified rubber powder. Background technique [0002] Waste rubber mainly refers to industrial products such as waste tires, rubber shoes, tapes, and sealing rubber sheets, among which waste tires are the main ones. Due to the unique three-dimensional cross-network structure of waste rubber, waste tires are difficult to degrade. If they are piled up for a long time without timely treatment, the environment will be greatly polluted. Therefore, the recycling of a series of waste rubber industrial products represented by waste tires has become a major problem. Effective and reasonable recycling of waste rubber can not only solve the corresponding environmental pollution problems, but also promote the development of the industrial field, improve the quality of life and indirectly promote the development of the industrial level. [0003] The recycling and reus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L51/06C08F253/00C08F222/06C08F279/02
CPCC08F253/00C08F279/02C08L51/04C08L2205/02C08L51/06C08F222/06
Inventor 谭金和
Owner 清远高能结加改性材料科技有限公司
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