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Composite rubber and its preparation method

A technology of composite rubber and nitrile rubber, which is applied in the field of rubber materials, can solve the problems of poor ozone aging resistance and ozone resistance, and achieve improved thermal oxygen aging resistance, good ozone aging resistance, and improved ozone aging resistance performance effect

Inactive Publication Date: 2020-05-19
茂联橡胶制品(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the poor ozone resistance of nitrile rubber, its application range is wide, and it is often used in oil-resistant products. It needs better flame retardancy and longer service life, and its poor ozone aging resistance will become a constraint. An important factor in its service life, there is still room for improvement

Method used

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  • Composite rubber and its preparation method
  • Composite rubber and its preparation method
  • Composite rubber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A composite rubber, comprising the following raw materials in parts by mass, wherein the content of each component is expressed in parts by mass:

[0059] Urepan50EL06G polyether polyurethane: 20 parts; NBR3950F nitrile rubber: 50 parts; white carbon black: 20 parts; clay: 6 parts; zinc oxide: 1 part; polyethylene glycol: 0.5 parts; paraffin wax: 0.5 parts; Joint agent: 0.5 parts; titanium dioxide: 5 parts; antioxidant RD: 1 part; flame retardant FR516: 40 parts; antiozonant NTU: 0.5 parts; antiozonant 6PPD: 0.5 parts; plasticizer NB-4: 4 parts; Dicumyl peroxide: 1.5 parts; Masterbatch MP-1005-1: 0.4 parts; Color masterbatch MP-1002-1: 1.6 parts; Color masterbatch MP-100: 3 parts.

Embodiment 2

[0061] A kind of compound rubber, formula is as follows:

[0062] Urepan50EL06G polyether polyurethane: 30 parts; NBR3950F nitrile rubber: 60 parts; silica: 30 parts; clay: 6 parts; zinc oxide: 1 part; polyethylene glycol: 0.5 parts; paraffin wax: 0.5 parts; Joint agent: 0.5 parts; titanium dioxide: 5 parts; antioxidant RD: 1 part; flame retardant FR516: 45 parts; antiozonant NTU: 0.5 parts; antiozonant 6PPD: 0.5 parts; plasticizer NB-4: 4 parts; Dicumyl peroxide: 2 parts; Masterbatch MP-1005-1: 0.4 parts; Color masterbatch MP-1002-1: 1.6 parts; Color masterbatch MP-100: 3 parts.

Embodiment 3

[0064] A kind of compound rubber, formula is as follows:

[0065] Urepan50EL06G polyether polyurethane: 40 parts; NBR3950F nitrile rubber: 70 parts; white carbon black: 40 parts; clay: 10 parts; zinc oxide: 3 parts; polyethylene glycol: 1 part; paraffin wax: 1.5 parts; Joint agent: 1.5 parts; titanium dioxide: 5 parts; antioxidant RD: 2 parts; flame retardant FR516: 55 parts; antiozonant NTU: 2.5 parts; antiozonant 6PPD: 0.5 parts; plasticizer NB-4: 7 parts; Dicumyl peroxide: 3 parts; Masterbatch MP-1005-1: 0.4 parts; Color masterbatch MP-1002-1: 1.6 parts; Color masterbatch MP-100: 3 parts.

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Abstract

The invention relates to the field of rubber materials, and provides compound rubber and a preparation method thereof for the problem of poor ozone-aging resistance. By adoption of the compound rubberand the preparation method, the ozone-aging resistance can be better improved. The invention adopts the following technical scheme that the compound rubber is prepared from the following raw materials in parts by mass: 20-50 parts of polyurethane, 50-80 parts of butadiene-acrylonitrile rubber, 4-8 parts of plasticizer, 20-50 parts of white carbon black, 0.5-3 parts of silane coupling agent, 40-60parts of flame retardant, 1.5-4 parts of crosslinking agent and 6-10 parts of clay. The method for preparing the compound rubber comprises the following steps: (1) mixing of masterbatch; (2) vulcanization of the masterbatch: prolonging the coagulation time of the masterbatch in a stage of no addition of the crosslinking agent. (3) vulcanization. The compound rubber and the preparation method provided by the invention have the beneficial effects that oil resistance is provided by acrylonitrile in the butadiene-acrylonitrile rubber, flame retardance is provided by the flame retardant, and better ozone-aging resistance is provided by the polyurethane; by prolonging of the coagulation time of the masterbatch in the stage of no addition of the crosslinking agent in a mixing machine, the clay can be better dispersed in mixed rubber, so that the ozone-aging resistance of the compound rubber can be improved.

Description

technical field [0001] The invention relates to the field of rubber materials, more specifically, it relates to a composite rubber and a preparation method thereof. Background technique [0002] The biggest advantage of composite rubber is the strength of various materials, such as high strength, light weight, high and low temperature resistance, corrosion resistance, heat insulation, insulation and other properties. According to the application purpose, select polymer materials and other materials with special properties to make Composite materials that meet your needs. [0003] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. . Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L75/08C08L71/02C08K13/02C08K3/34C08K3/36C08K5/14C08K5/3437C08K5/18
CPCC08L9/02C08L2201/02C08L2201/08C08L2205/035C08L75/08C08L71/02C08K13/02C08K3/346C08K3/36C08K5/14C08K5/3437C08K5/18
Inventor 佘庆勋
Owner 茂联橡胶制品(深圳)有限公司
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