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Photocrosslinkable rubber composition and application, and production method for the application

A technology of rubber composition and rubber matrix, which is applied in the field of rubber and can solve the problems of low efficiency of ethylene-propylene rubber

Active Publication Date: 2021-04-06
HANGZHOU XINGLU TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the technical defects in the prior art that the production efficiency of ethylene-propylene rubber is not high by the peroxide vulcanization method, high-energy radiation method, and ultraviolet light crosslinking, the present invention provides a photocrosslinked rubber composition, which uses Branched polyethylene with less than 50 branched chains / 1000 carbons partially or completely replaces ethylene-propylene rubber, and also provides the application of the rubber composition and a method for producing the application

Method used

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  • Photocrosslinkable rubber composition and application, and production method for the application
  • Photocrosslinkable rubber composition and application, and production method for the application
  • Photocrosslinkable rubber composition and application, and production method for the application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The number of branched polyethylene used is PER-7.

[0086] The processing and cross-linking steps are as follows:

[0087] (1) Rubber mixing and molding: set the temperature of the internal mixer to 100°C, and the rotor speed to 50 rpm, add 70 parts of EPDM rubber and 30 parts of branched polyethylene for pre-compression mixing for 2 minutes; then add 1 part of benzoin dimethyl ether, after mixing for 3 minutes, remove the rubber, after thinning with an open mill, press the mixed rubber on a flat vulcanizer to form a 1mm thick sample;

[0088] (2) After irradiating and crosslinking for 10 seconds under ultraviolet light, it was parked for 16 hours, and then samples were cut for various tests.

Embodiment 2

[0090] The number of branched polyethylene used is PER-7.

[0091] The processing and cross-linking steps are as follows:

[0092] (1) Rubber mixing and molding: set the temperature of the internal mixer to 100°C, and the rotor speed to 50 rpm, add 50 parts of EPDM rubber and 50 parts of branched polyethylene for pre-compression mixing for 2 minutes; then add 1 part of benzoin dimethyl ether, after mixing for 3 minutes, remove the rubber, after thinning with an open mill, press the mixed rubber on a flat vulcanizer to form a 1mm thick sample;

[0093] (2) After irradiating and crosslinking for 10 seconds under ultraviolet light, it was parked for 16 hours, and then samples were cut for various tests.

Embodiment 3

[0095] The number of branched polyethylene used is PER-7.

[0096] The processing and cross-linking steps are as follows:

[0097] (1) Rubber mixing and molding: set the temperature of the internal mixer to 100°C, the rotor speed to 50 rpm, add 100 parts of branched polyethylene for pre-compression mixing for 2 minutes; then add 1 part of benzoin dimethyl ether, mix After 3 minutes of refining, remove the rubber, and after thinning with an open mill, press the mixed rubber on a flat vulcanizer to form a 1mm thick sample;

[0098] (2) After irradiating and crosslinking for 10 seconds under ultraviolet light, it was parked for 16 hours, and then samples were cut for various tests.

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Abstract

The invention discloses a rubber composition adopting photocrosslinking and its application. The rubber composition is based on 100 parts by weight, and it includes: a rubber matrix and an initiator, and the rubber matrix contains: the content of branched polyethylene a: 0< a≤100 parts, the content of ethylene-propylene rubber b: 0≤b<100 parts; the initiator contains 0.1-10 parts, and the initiator contains at least one of cationic photoinitiator and free radical photoinitiator. The application is to make rubber products. Rubber products include wires and cables, films, gloves, condoms, and medical catheters. The beneficial effect is to use branched polyethylene to partially or completely replace ethylene-propylene rubber, and apply it to rubber cross-linked by ultraviolet light. In the product, it can obtain excellent elasticity, electrical insulation performance, aging resistance and ozone resistance performance, and also has good mechanical strength.

Description

technical field [0001] The invention belongs to the field of rubber, and in particular relates to a photocrosslinked rubber composition and a processing method thereof. The invention also relates to the application of the rubber composition and a method for producing the application. Background technique [0002] Ethylene-propylene rubber has excellent elasticity, electrical insulation properties, aging resistance and ozone resistance. When used in occasions that require high performance, the cross-linking methods used mainly include peroxide vulcanization and high-energy radiation. , the high-energy radiation method has limited its application due to factors such as high equipment investment and harsh protective measures. The peroxide vulcanization method requires a long time of cross-linking, which consumes a lot of energy and has low production efficiency. Ultraviolet light crosslinking is a new crosslinking process developed in recent years. It has the advantages of sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/06H01B7/02H01B7/17H01B13/00H01B13/14H01B13/24A41D19/00
CPCA41D19/0055H01B7/0275H01B7/17H01B13/003H01B13/145H01B13/148H01B13/24C08L23/06C08L23/16C08L2205/03C08L2205/025C08L2201/08C08L2203/202C08L2203/18C08L2312/00C08L2312/08C08L2207/02C08K3/22C08K3/36C08K5/0016C08K5/0025C08K5/005C08K5/34924C08K5/5403C08K2003/2206C08K2003/2217C08K2003/2296C08K2003/265C08L23/26C08L2023/44C08L2203/02C08L2312/06C08L2666/02
Inventor 不公告发明人
Owner HANGZHOU XINGLU TECH CO LTD
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