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High-temperature resistant rubber conveyer belt and preparation method thereof

A conveyor belt and high-temperature-resistant technology, which is applied in the field of high-temperature-resistant rubber conveyor belts and its preparation, can solve the problems of unmentioned bonding method between covering rubber and skeleton materials, poor co-vulcanization performance of silicone rubber and EPDM rubber, etc. , to achieve the effects of simple structure, improved service life, and simplified preparation process

Active Publication Date: 2015-04-08
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japanese patent JP60137645-A introduces a high-temperature-resistant conveyor belt. The cover rubber is made of silicone rubber and EPDM rubber and used to improve high-temperature resistance, but the co-vulcanization performance of silicone rubber and EPDM rubber is poor, and the patent There is no mention of the bonding method between the covering glue and the skeleton material

Method used

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  • High-temperature resistant rubber conveyer belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] On the double-roll mill, add 100 parts of silicone rubber, control the roller temperature of the mill at 30-50°C, add 40 parts of fumed white carbon black, 15 parts of activated magnesium oxide (commercially available), N, N'- 8 parts of m-phenylene bismaleimide, 1.5 parts of adhesive RA, 1.5 parts of adhesive RS, and finally add 0.3 parts of crosslinking agent di-tert-butyl peroxide and 5 parts of triallyl cyanurate . Control the roller temperature of the mill between 45-70°C, mix evenly on the mill, then adjust the roller distance of the mill to 0.5-1 mm, roll temperature 40-50°C, thin pass more than 5 times to obtain the final rubber stand-by. Put the above final blended rubber into the open mill for re-milling, and then put it in the calender for calendering to release the sheet for use. The thickness of the film is controlled at 3-12mm when calendering the sheet. The film is tightly bonded with untreated polyester canvas on a forming machine (model DCY-1800, Wuxi...

Embodiment 2

[0019] On the double-roll mill, add 100 parts of silicone rubber, control the roller temperature of the mill at 30-50°C, add 40 parts of fumed white carbon black, 3 parts of nano-zinc oxide, N,N'-m-phenylene bis 12 parts of maleimide, 1.5 parts of adhesive A, 1.5 parts of adhesive RE, and finally 1.5 parts of crosslinking agent dicumyl peroxide (DCP) and 2.5 parts of triallyl cyanurate . Control the roller temperature of the mill between 45-70°C, mix evenly on the mill, then adjust the roller distance of the mill to 0.5-1 mm, roll temperature 40-50°C, thin pass more than 5 times to obtain the final rubber stand-by. Put the above final blended rubber into the open mill for re-milling, and then put it in the calender for calendering to release the sheet for use. The thickness of the film is controlled at 3-12mm when calendering the sheet. On the forming machine, the film is tightly bonded with the untreated aramid canvas to form a blank for a high-temperature resistant conveyo...

Embodiment 3

[0021] On the double-roll mill, add 100 parts of fluororubber, control the temperature of the rollers of the mill at 30-50°C, add 5 parts of nano-calcium oxide, 40 parts of thermal carbon black N990, N,N'-4,4' - 2.5 parts of diphenylmethane bismaleimide (BMI), 1.25 parts of adhesive RA, 1.25 parts of adhesive RK, and finally add cross-linking agent and cross-linking auxiliary agent: dicumyl peroxide (DCP) 3 parts, 2 parts of triallyl isocyanurate (TAIC). Control the roller temperature of the mill between 45-70°C, mix evenly on the mill, then adjust the roller distance of the mill to 0.5-1 mm, roll temperature 40-50°C, thin pass more than 5 times to obtain the final rubber stand-by. Put the above final blended rubber into the screw extruder or open mill for re-milling, and then put it in the calender for calendering to release the sheet for use. When calendering the sheet, the thickness of the film is controlled at 3-12mm. On the forming machine, the film is closely bonded wi...

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Abstract

The invention relates to a high-temperature resistant rubber conveyer belt and a preparation method thereof. Cover rubber takes silicone rubber, fluororubber or Levapren rubber as a matrix, employs a peroxide crosslinking agent and is added with a mixed bonding system and other proper additives, wherein the mixed bonding system comprises maleimide, a methylene donor, a methylene acceptor and the like; a frame material adopts polyester canvas or aramid fiber canvas, which is not subjected to surface treatment; and the prepared cover rubber has better high-temperature resistance than ethylene propylene diene monomer, can be bonded with the frame material and still keeps higher bonding strength after being aged at 200 DEG C for a long time. The prepared high-temperature resistant rubber conveyer belt can be applied in a conveying environment where the material temperature is extremely high, and has a longer service life than an ethylene propylene diene monomer high-temperature resistant conveyer belt.

Description

technical field [0001] The invention relates to a high temperature resistant rubber conveyor belt and a preparation method thereof. Background technique [0002] At present, the covering rubber base material of high temperature resistant conveyor belt is mainly EPDM rubber. Due to the poor adhesion between EPDM rubber and fiber skeleton materials such as polyester and aramid, natural rubber or styrene-butadiene rubber must be used to prepare the adhesive layer rubber, and a buffer layer must be added between the adhesive layer and the covering layer rubber. , Natural rubber and styrene-butadiene rubber have poor high temperature resistance, and will lose their adhesion due to aging when used at high temperatures for a long time, resulting in delamination of the conveyor belt. On the other hand, EPDM rubber can only be used for a long time below 150 ° C, and the high temperature resistant conveyor belt is often operated in a high temperature and harsh environment for a long ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G15/32C08L83/04C08L27/12C08L23/08C08K13/02
CPCB65G15/32B65G2207/22B65G2812/02198C08K3/04C08K3/22C08K3/36C08K5/14C08K5/3415C08K5/34924C08K13/02C08K2003/2206C08K2003/222C08K2201/003C08K2201/011C08L2201/08C08L83/04C08L27/12
Inventor 田明萨日娜张立群李剑吴建国孙业斌王文才
Owner BEIJING UNIV OF CHEM TECH
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