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Low-expansion ethylene-propylene rubber material

An ethylene-propylene rubber, low-expansion technology, applied in the field of low-expansion ethylene-propylene rubber materials, can solve problems such as poor stability, lack of polarity, and large volume expansion rate

Inactive Publication Date: 2015-05-27
ANHUI ZHONGDING SEALING PARTS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the lack of polarity and low degree of unsaturation of ethylene-propylene rubber, it has good resistance to various polar chemicals such as alcohols, acids, alkalis, oxidants, refrigerants, detergents, animal and vegetable oils, ketones and fats, etc. ; But poor stability in aliphatic and aromatic solvents, such as benzene, xylene, mineral oil, gasoline, petroleum and its fractions, generally have a large volume expansion rate in the above oily solutions

Method used

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Embodiment Construction

[0021] Below, the technical solution of the present invention will be described in detail through specific examples. In Examples 1-5, the raw materials of a low-expansion ethylene-propylene rubber material proposed by the present invention are composed as shown in the following table in parts by weight.

[0022] Component

[0023] Paraffin oil

[0024] Wherein, in embodiment 1, ethylene propylene rubber is the high Mooney ethylene propylene rubber that oil content is 95PHR; In embodiment 2, the iodine absorption value of quick extruding carbon black N-550 is 49mg / g; In embodiment 3, The ethylene-propylene rubber is a high Mooney EPDM rubber with an oil content of 100PHR. The iodine absorption value of the fast extruded carbon black N-550 is 43mg / g, and the DBP absorption value of the medium particle thermal black is 4.2×10 -4 m 3 / kg; In embodiment 4, the iodine absorption value of quick extruding carbon black N-550 is 37mg / g, and the DBP absorption value...

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Abstract

The invention discloses a low-expansion ethylene-propylene rubber material which is prepared from the following raw materials in parts by weight: 200 parts of ethylene-propylene rubber, 130-170 parts of fast-extrusion carbon black N-550, 180-220 parts of medium-particle pyrolysis carbon black, 40-60 parts of paraffin oil, 1-1.5 parts of anti-aging agent RD, 1-1.5 parts of anti-aging agent MB, 3-8 parts of indirect-process zinc oxide, 0.5-2 parts of stearic acid, 0.3-1 part of accelerator BZ, 0.8-1.5 parts of accelerator TMTD, 0.8-3 parts of accelerator DM, 1-1.5 parts of accelerator TRA, 0.5-1 part of sulfur and 0.1-0.5 part of anti-scorching agent CTP. The low-expansion ethylene-propylene rubber material has the advantages of favorable high temperature resistance, favorable oil resistance and small volume expansion in an oily solution.

Description

technical field [0001] The invention relates to the technical field of automobile intake systems, in particular to ethylene-propylene rubber used for clean air pipes of the intake system, and in particular to a low-expansion ethylene-propylene rubber material. Background technique [0002] With the development of the automobile manufacturing industry, the temperature of the engine is getting higher and higher, so the temperature requirements for the products around the engine are also getting higher and higher. The temperature in many places exceeds 150 ° C in an instant. NBR materials with better oil resistance can no longer To withstand such high temperatures, new materials are urgently needed to replace them. The chemical resistance of rubber is mainly determined by its molecular structure, such as degree of unsaturation, polarity, degree of cross-linking, type and amount of filler, etc. Ethylene-propylene rubber is an organic compound product, which is an extremely impor...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/3437
CPCC08L23/16C08L91/06C08K13/04C08K3/04C08K7/18C08K2003/2296C08K5/09C08K3/06
Inventor 夏迎松俞晨曦魏巍章维国宋永帅王军
Owner ANHUI ZHONGDING SEALING PARTS
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