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Rubber composition and processing method, and adhesive tape, rubber roller and production method using the same

A rubber composition and rubber layer technology, applied in the field of rubber, can solve the problems of difficult crosslinking, large steric hindrance, affecting processing efficiency and product performance, and achieve high mechanical strength and solve the effect of low mechanical strength

Active Publication Date: 2021-05-14
HANGZHOU XINGLU TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 and processing method, and adhesive tape, rubber roller and production method using the same
  • Rubber composition and processing method, and adhesive tape, rubber roller and production method using the same
  • Rubber composition and processing method, and adhesive tape, rubber roller and production method using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] The number of branched polyethylene used is PER-9.

[0097] The processing steps are as follows:

[0098] (1) Rubber mixing: set the temperature of the internal mixer to 100°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; add 10 parts of oxidized Zinc, 2 parts of stearic acid, 1 part of antioxidant RD, knead for 1 minute; then add 60 parts of carbon black N330, 20 parts of paraffin oil SUNPAR2280 and 5 parts of liquid ethylene-propylene rubber, knead for 3 minutes; Then add 5 parts of aramid staple fibers with a length of 1mm, and knead for 2 minutes; finally add 4 parts of crosslinking agent dicumyl peroxide (DCP), 1 part of auxiliary crosslinking agent triallyl isocyanurate (TAIC) and 0.3 parts of sulfur, after mixing for 2 minutes, remove the glue. Thinly pass the mixed rubber on an open mill with a roller temperature of 80°C, and thinly pass it 7 times at a roll distance...

Embodiment 2

[0101] The branched polyethylene code used is PER-2.

[0102] The processing steps 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 80 parts of EPDM rubber and 20 parts of branched polyethylene for pre-compression mixing for 90 seconds; add 10 parts of oxidized Zinc, 2 parts of stearic acid, 1 part of antioxidant RD, knead for 1 minute; then add 60 parts of carbon black N330, 20 parts of paraffin oil SUNPAR2280 and 5 parts of liquid ethylene-propylene rubber, knead for 3 minutes; Then add 5 parts of aramid staple fibers with a length of 1mm, and knead for 2 minutes; finally add 4 parts of crosslinking agent dicumyl peroxide (DCP), 1 part of auxiliary crosslinking agent triallyl isocyanurate (TAIC) and 0.3 parts of sulfur, after mixing for 2 minutes, remove the glue. Thinly pass the mixed rubber on an open mill with a roller temperature of 80°C, and thinly pass it 7 times at a roll distance of 0....

Embodiment 3

[0106] The branched polyethylene number used is PER-4.

[0107] The processing steps are as follows:

[0108] (1) Rubber mixing: set the temperature of the internal mixer to 90°C, and the rotor speed to 50 rpm, add 50 parts of binary ethylene propylene rubber and 50 parts of branched polyethylene for pre-compression mixing for 90 seconds; add 10 parts of oxidized Zinc, 2 parts of stearic acid, 1 part of antioxidant RD, knead for 1 minute; then add 60 parts of carbon black N330, 15 parts of paraffin oil SUNPAR2280, 5 parts of coumarone resin and 5 parts of liquid ethylene propylene rubber , mixed for 3 minutes; then add 5 parts of aramid staple fibers with a length of 1mm, and mix for 2 minutes; finally add 4 parts of crosslinking agent dicumyl peroxide (DCP), 1 part of auxiliary crosslinking agent triallyl Base isocyanurate (TAIC) and 0.3 parts of sulfur, after mixing for 2 minutes, remove the glue. Thinly pass the mixed rubber on an open mill with a roller temperature of 80...

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Abstract

The invention discloses a rubber composition and the application of the rubber composition. The formula of the rubber composition includes in parts by weight: 100 parts of rubber matrix, 1.5-9 parts of crosslinking agent, 5-60 parts of short fiber, and can also be It further contains 0.3-15 parts of auxiliary crosslinking agent, 3-25 parts of metal oxide, 3-90 parts of plasticizer, 30-100 parts of reinforcing filler, 1-3 parts of stabilizer, and 3 parts of unsaturated carboxylic acid metal salt ~20 parts, wherein, the rubber matrix contains by mass parts: the content of branched polyethylene is a: 0<a≤100 parts, the content of binary ethylene-propylene rubber is b: 0≤b<100 parts; The content c: 0≤c<100 parts, the rubber composition containing short fibers of the present invention can have the advantages of better mechanical strength and wear resistance, and is a high-strength and high-temperature-resistant rubber composition, producing high-strength and High temperature resistant new transmission belts, conveyor belts and rubber rollers.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a short-fiber-reinforced rubber composition and a processing method thereof, as well as a tape and a rubber roller using the rubber composition and a production method. Background technique [0002] With the rapid development of the automobile industry, the transmission system of the automobile engine room is becoming more and more compact, and the temperature of the engine room is getting higher and higher. Require. Hydrogenated nitrile rubber (HNBR) is expensive, and is mainly used for timing belts with very high requirements and special transmission belts for oil fields that require oil resistance and ozone resistance. The price of ethylene propylene rubber is moderate, the molecular main chain is completely saturated, and it has excellent heat resistance. It has become a trend to use ethylene propylene rubber to replace neoprene rubber for power transmission belts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/06C08L77/10C08L77/00C08L71/02C08L45/02C08K13/02C08K3/22C08K5/09C08K3/04C08K5/14B29C35/02B65G15/34
CPCB65G15/34C08L23/06C08L23/16B29C35/02C08L2203/18C08L2205/025C08L2205/035C08L2205/16C08K2003/2296C08K2003/222C08L77/10C08K13/02C08K3/22C08K5/09C08K3/04C08K5/14C08L71/02C08L45/02C08L77/00C08K3/013C08K5/0016C08K5/0025C08L2205/03C08L91/00C08K7/02B65G15/32C08L23/08
Inventor 不公告发明人
Owner HANGZHOU XINGLU TECH CO LTD
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