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Rubber composition, processing method, rubber product adopting rubber composition and production method

A rubber composition and rubber matrix technology, applied in rubber composition and processing, can solve the problems of difficult free radical reaction, no emphasis on mechanical properties, large steric hindrance, 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

[0003] China Patent Authorization Announcement No. CN104312018B A heat-resistant conveyor belt covering rubber, which includes binary ethylene propylene rubber, low Mooney EPDM rubber, high wear-resistant carbon black, zinc methacrylate, white carbon black, paraffin, viscose It is not emphasized that it has good mechanical properties
[0008] 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

Method used

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  • Rubber composition, processing method, rubber product adopting rubber composition and production method
  • Rubber composition, processing method, rubber product adopting rubber composition and production method
  • Rubber composition, processing method, rubber product adopting rubber composition and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] The number of branched polyethylene used is PER-5.

[0102] The processing steps of rubber composition are as follows:

[0103] (1) Rubber mixing: set the temperature of the internal mixer to 90°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 90 seconds; add 40 parts of charcoal Black N550 and 10 parts of white carbon black, knead for 3 minutes; then add 3 parts of crosslinking agent dicumyl peroxide (DCP), knead for 2 minutes and then remove the glue. Thinly pass the mixed rubber on the open mill, increase the roller distance to obtain a thin sheet with a thickness of about 2.5mm, and park it for 20 hours.

[0104] (2) Perform various tests after parking for 16 hours after vulcanization.

Embodiment 2

[0106] The number of branched polyethylene used is PER-5.

[0107] The processing steps of rubber composition are as follows:

[0108] (1) Rubber mixing: set the temperature of the internal mixer to 90°C, the rotor speed to 50 rpm, add 100 parts of branched polyethylene for pre-compression mixing for 90 seconds; add 40 parts of carbon black N550 and 10 parts of white carbon black , kneading for 3 minutes; then add 3 parts of crosslinking agent dicumyl peroxide (DCP), knead for 2 minutes and then remove glue. Thinly pass the mixed rubber on the open mill, increase the roller distance to obtain a thin sheet with a thickness of about 2.5mm, and park it for 20 hours.

[0109] (2) Perform various tests after parking for 16 hours after vulcanization.

Embodiment 3

[0115] The number of branched polyethylene used is PER-9.

[0116] The processing steps of rubber composition are as follows:

[0117] (1) Rubber mixing: set the temperature of the internal mixer to 90°C, and the rotor speed to 50 rpm, add 90 parts of EPDM rubber and 10 parts of branched polyethylene for pre-compression mixing for 90 seconds; then add 5 parts Zinc oxide, 1 part of stearic acid, 5 parts of polyethylene glycol PEG4000 and 1 part of antioxidant 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD), kneaded for 2 minutes; Then add 80 parts of carbon black N550, 20 parts of white carbon black, 20 parts of calcined clay, 20 parts of petrolatum and 30 parts of paraffin oil SUNPAR2280, and mix for 3 minutes; then add 6 parts of crosslinking agent dicumyl peroxide (DCP) , 2 parts of auxiliary crosslinking agent triallyl isocyanurate (TAIC) and 0.3 part of auxiliary crosslinking agent sulfur, after mixing for 2 minutes, discharge glue. Thinly pass the mixed rubber on the ...

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Abstract

The invention discloses a rubber composition, a processing method, application of the rubber composition to a rubber product, and a production method of the rubber product. The rubber composition comprises a rubber matrix and necessary components, wherein the rubber matrix comprises the following components: being greater than 0 and smaller than or equal to 100 parts of branched polyethylene, greater than or equal to 0 and smaller than 100 parts of ethyene-propylene rubber and ethylene propylene terpolymer; the necessary components comprise the following components: 1.5 to 10 parts of a cross-linking agent, and 40 to 200 parts of a reinforcing filler; the reinforcing filler comprises 5 to 100 parts carbon black, and 5 to 60 parts of white carbon black, and can further comprise one or moreof calcium carbonate, talcum powder, calcined pottery clay, magnesium silicate and magnesium carbonate. The rubber composition is applied for the manufacture of the rubber product. The rubber productcomprises an insulating material for manufacturing high-strength cables and cords, a waterproof roll and a high temperature-resistance conveying belt. The rubber composition has the benefits that theyield and the tearing strength of the rubber product are improved, and the service performance of the rubber product is improved.

Description

technical field [0001] The invention belongs to the field of rubber, and in particular relates to a rubber composition and a processing method thereof. The invention also relates to the application of the rubber composition in rubber products requiring better properties such as tear strength and adhesion, and production The rubber product method includes but is not limited to rubber products such as insulating materials for high-strength wires and cables, high-temperature-resistant conveyor belts, and waterproof coils. Background technique [0002] In the field of rubber products, the two most commonly used fillers with high reinforcement are carbon black and silica, and the reinforcing filling system using silica and carbon black is compared with the reinforcing filling system without silica. The filling system can often endow rubber products with better tear resistance, adhesion, wear resistance and low heat generation. Side glue, waterproof membrane, conveyor belt coveri...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/06C08L71/02C08K13/02C08K3/04C08K3/36C08K5/14C08K3/22C08K5/09H01B3/44H01B3/28B65G15/34B60C1/00B29C35/02
CPCH01B3/28H01B3/441B65G15/34C08K3/04C08K3/36C08K5/14C08L23/06C08L23/16B29C35/02B60C1/0016B60C1/0025C08L2201/08C08L2205/025C08L2203/18C08L2203/202C08L2205/035C08L2205/03C08K2003/2296C08L2207/07C08L71/02C08K13/02C08K3/22C08K5/09B60C1/00B60C2200/08B60C2200/12C08L23/0815C08K3/34
Inventor 不公告发明人
Owner HANGZHOU XINGLU TECH CO LTD
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