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Rubber composition, processing method, application and method for producing high-strength rubber product

A rubber composition and rubber matrix technology, applied in the field of rubber, can solve the problems of difficult crosslinking, large steric hindrance, affecting processing efficiency and product performance, etc.

Active Publication Date: 2018-07-24
HANGZHOU XINGLU TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Rubber generally needs to be cross-linked before use. Among the commonly used cross-linking methods for ethylene-propylene rubber, peroxide cross-linking or radiation cross-linking are suitable for ethylene-α-olefin copolymers. Both are mainly through the capture of tertiary carbons. Hydrogen atoms form tertiary carbon radicals, and then form carbon-carbon crosslinks through free radicals, but the copolymer of ethylene and 1-octene (hereinafter referred to as POE) has fewer tertiary carbon atoms, and the branch connected to the tertiary carbon atoms Chain length, large steric hindrance, difficult free radical reaction, resulting in difficulty in crosslinking, affecting processing efficiency and product performance, such as unsatisfactory compression set resistance

Method used

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  • Rubber composition, processing method, application and method for producing high-strength rubber product
  • Rubber composition, processing method, application and method for producing high-strength rubber product
  • Rubber composition, processing method, application and method for producing high-strength rubber product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The number of branched polyethylene used is PER-6.

[0083] The processing steps are as follows:

[0084] (1) Rubber mixing: set the internal mixer temperature to 90°C, the rotor speed to 50 rpm, add 70 parts of EPDM rubber and 30 parts of branched polyethylene, and mix for 90 seconds; Add 35 parts of zinc methacrylate and mix for 4 minutes; finally add 6 parts of crosslinking agent dicumyl peroxide (DCP), mix for 2 minutes and then discharge the rubber. Put the rubber mixture on the roller temperature of 60℃. A thin pass on the open mill to obtain a sheet with a thickness of about 2.5mm, and then stand for 20 hours.

[0085] (2) After vulcanization, the test shall be carried out after 16 hours of parking.

Embodiment 2

[0087] The number of branched polyethylene used is PER-5.

[0088] The processing steps are as follows:

[0089] (1) Rubber mixing: Set the internal mixer temperature to 90℃, the rotor speed to 50 rpm, add 50 parts of EPDM rubber and 50 parts of branched polyethylene pre-compression mixing for 90 seconds; Add 50 parts of zinc methacrylate and mix for 4 minutes; finally add 10 parts of crosslinking agent dicumyl peroxide (DCP), mix for 2 minutes and then discharge the rubber. Put the rubber mixture on a roller temperature of 60℃ A thin pass on the open mill to obtain a sheet with a thickness of about 2.5mm, and then stand for 20 hours.

[0090] (2) After vulcanization, the test shall be carried out after 16 hours of parking.

Embodiment 3

[0092] The number of branched polyethylene used is PER-5.

[0093] The processing steps are as follows:

[0094] (1) Rubber mixing: set the internal mixer temperature to 90℃, the rotor speed to 50 rpm, add 100 parts of branched polyethylene and pre-press and mix for 90 seconds; then add 35 parts of zinc methacrylate to the rubber compound , Kneading for 4 minutes; finally add 5 parts of crosslinking agent dicumyl peroxide (DCP), kneading for 2 minutes and then discharge the rubber, pass the mixed rubber on an open mill with a roller temperature of 60℃ to obtain 2.5 Thin slices with a thickness of about mm, left for 20 hours.

[0095] (2) After vulcanization, the test shall be carried out after 16 hours of parking.

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Abstract

The invention discloses a rubber composition, a processing method, a product adopting the rubber composition and a production method. The rubber composition comprises a rubber matrix and necessary components, wherein the rubber matrix comprises the following components: branched polyethylene with the content a being greater than 0 and smaller than or equal to 100 parts, and ethyene-propylene rubber and ethylene propylene terpolymer with the content b being greater than or equal to 0 and smaller than 100 parts; the necessary components comprise the following components: 1 to 10 parts of a cross-linking agent, and 5 to 50 unsaturated carboxylic metal salt. The rubber composition has the benefits that the rubber composition can be applied to rubber products, such as insulating gloves, heat resistance conveying belts and rubber tubes, and the rubber products have excellent mechanical property.

Description

Technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a rubber composition with high mechanical strength and a processing method, as well as a high-strength rubber product using the rubber composition and a production method thereof. technical background [0002] Sulfur vulcanization and peroxide vulcanization are the two most commonly used vulcanization processes for ethylene propylene rubber. In the production process of ethylene-propylene rubber products, in order to obtain good resilience, electrical insulation, and heat aging resistance, peroxide-based vulcanization systems are often used. However, the mechanical strength of peroxide-vulcanized ethylene-propylene rubber is lower than that of sulfur-vulcanized ethylene-propylene rubber. Unsaturated carboxylic acid metal salts such as zinc acrylate and zinc methacrylate can be used as a crosslinking agent for peroxide vulcanization to improve the vulcanization speed and cr...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/06C08F255/02C08F255/04C08F255/06C08F220/06C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06B29C35/02B65G15/34A41D19/015
CPCA41D19/0055B29C35/02B65G15/34C08F255/02C08F255/04C08F255/06C08K2003/2296C08L23/06C08L23/16C08L2203/18C08L2205/025C08F220/06C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
Inventor 不公告发明人
Owner HANGZHOU XINGLU TECH CO LTD
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