High-temperature-resistant ethylene propylene rubber sealing pad and preparation method and application thereof

A technology of ethylene-propylene rubber and sealing gaskets, which is applied in the field of high-temperature-resistant ethylene-propylene rubber sealing gaskets and its preparation, can solve the problems of low temperature and short-term or intermittent use at 150°C, and achieve excellent weather resistance Effect

Active Publication Date: 2016-12-07
兰州瑞普科技实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, one of the objectives of the present invention is to provide a high temperature resistant ethylene propylene rubber sealing gasket, the high temperature resistant ethylene propylene rubber sealing gasket is made of binary ethylene propylene rubber, furnace carbon black, spray carbon Black, zinc oxide, aluminum oxide, vulcanizing agent, cross-linking agent and anti-aging agent, among which fully saturated binary ethylene-propylene rubber is used as the rubber raw material, and the high-temperature resistant ethylene-propylene rubber sealing gasket has superior Weather resistance, medium resistance, temperature re

Method used

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  • High-temperature-resistant ethylene propylene rubber sealing pad and preparation method and application thereof
  • High-temperature-resistant ethylene propylene rubber sealing pad and preparation method and application thereof
  • High-temperature-resistant ethylene propylene rubber sealing pad and preparation method and application thereof

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Effect test

Embodiment 1

[0060] A high-temperature-resistant ethylene-propylene rubber sealing gasket provided by the present invention is made of the following components in parts by weight:

[0061]

Embodiment 2

[0063] The preparation method of embodiment 1 high temperature resistant ethylene propylene rubber sealing gasket, comprises the following steps:

[0064] (1) 85 parts of binary ethylene propylene rubber K740, 80 parts of carbon black N550, 20 parts of spray carbon black, 3 parts of zinc oxide, 3 parts of aluminum oxide, 5 parts of paraffin oil, 1 part of vulcanizing agent DCP, auxiliary Mix 0.5 parts of cross-linking agent HVA-2 and 0.2 parts of anti-aging agent 445 and banbury for 5 minutes, the temperature is less than 100 ° C, then pour out the mixed rubber material and add it to the open mixer to make a triangular bag and knead for 5 times. Parked for 10h to obtain the mixed rubber;

[0065] (2) Re-milling the mixed rubber in an open mill, and when the temperature of the rubber material reaches 70° C., a rectangular rubber strip is produced, and then added to an extruder for extrusion molding to obtain a cylindrical rubber strip;

[0066] (3) The mold is added to the vul...

Embodiment 3

[0068] A high-temperature-resistant ethylene-propylene rubber sealing gasket provided by the present invention is made of the following components in parts by weight:

[0069]

[0070] Wherein, the ratio between carbon black N330 and N550 is 1:1, and the parts by weight of carbon black N330 and carbon black N550 are both 45 parts.

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Abstract

The invention relates to the technical field of ethylene propylene rubber sealing pads, in particular to a high-temperature-resistant ethylene propylene rubber sealing pad and a preparation method and application thereof. The high-temperature-resistant ethylene propylene rubber sealing pad is made from ethylene propylene copolymer, furnace carbon black, spray carbon black, zinc oxide, aluminum oxide, a vulcanizing agent, an assistant cross-linker, an anti-aging agent and the like, wherein fully saturated ethylene propylene copolymer is used as a rubber raw material, and the prepared high-temperature-resistant ethylene propylene rubber sealing pad has excellent weatherability, dielectric resistance and temperature tolerance, may be used for a long time at 150 DEG C and may be used temporarily or intermittently at 180 DEG C, fatigue resistance and high-temperature aging resistance of the traditional ethylene propylene rubber sealing pad are improved, and the problems of the prior art that high-temperature fatigue performance is low and the use at 150 DEG C is only temporary or intermittent are solved.

Description

technical field [0001] The invention relates to the technical field of ethylene-propylene rubber sealing gaskets, in particular to a high-temperature-resistant ethylene-propylene rubber sealing gasket and its preparation method and application. Background technique [0002] As an important part of the plate heat exchanger, the gasket has an important impact on the service life of the plate heat exchanger. The sealing gasket should not only seal the medium so that it does not leak to the external environment, but also prevent the heat exchange medium from mixing. If there is a problem with the gasket, it may cause the plate heat exchanger to fail to operate normally. [0003] Rubber gaskets are commonly used gaskets in plate heat exchangers. The materials of rubber sealing gaskets mainly include ethylene propylene diene monomer (EPDM), nitrile rubber (NBR), fluorine rubber (FPM) and so on. EPDM is a ternary random copolymer of ethylene, propylene and a small amount of non-...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/22B29C35/02
CPCB29C35/02C08K2201/014C08L23/16C08L2201/08C08L91/06C08K13/02C08K3/04C08K2003/2296C08K2003/2227
Inventor 他维成许炳博刘忠元
Owner 兰州瑞普科技实业有限责任公司
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