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High/low-temperature resisting ethylene acrylic acid copolymer and preparation method thereof

An ethylene acrylic acid copolymer and ethylene acrylic acid technology, applied in the rubber field, can solve the problems of cracking of rubber products, inability to meet the use of turbocharged engines, brittleness, etc.

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

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of the technological level of the automobile industry, all brands of automobiles in the world are vigorously using turbocharged engines to reduce energy consumption and improve engine efficiency. However, the widespread promotion of turbochargers also Encountered many technical problems, such as long-term exposure to hot air aging, causing cracks and brittleness of ordinary rubber products. It is one of the behind-the-scenes black hands behind the "car recalls" of many auto manufacturers in recent years.
According to the understanding of many automobile manufacturers, due to the application of the turbo boost system, the heat of the clean air pipe of the car intake system is greatly increased, and the conventional rubber material can no longer meet the use of the turbocharged engine. Ethylene acrylic acid copolymers with excellent performance at high and low temperatures are becoming more and more important

Method used

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  • High/low-temperature resisting ethylene acrylic acid copolymer and preparation method thereof
  • High/low-temperature resisting ethylene acrylic acid copolymer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0018] A high and low temperature resistant ethylene acrylic acid copolymer proposed by the present invention, its raw materials include by weight: 80 parts of ethylene acrylic acid copolymer, 40 parts of carbon black, 8 parts of mixed ether fat plasticizer A-8100, hexamethylenediamine aminomethyl 1 part of acid salt, 3 parts of active amine accelerator, 1 part of anti-aging agent KY-405, 1 part of stearic acid, 0.3 part of octadecylamine.

[0019] The present invention also proposes the preparation method of the above-mentioned high and low temperature resistant ethylene acrylic acid copolymer, and the above-mentioned raw materials are sent into an internal mixer and kneaded to obtain a mixed material, wherein the hardness of the mixed material is 73 degrees, and the strength of the mixed material is 11.7MPa. The elongation rate is 215%; the mixed material is sent into the open mill for open kneading and molding, the temperature for kneading and molding is 60°C, and then place...

Embodiment 2

[0021] A kind of high and low temperature resistant ethylene acrylic acid copolymer proposed by the present invention, its raw material comprises by weight: ethylene acrylic acid copolymer 100 parts, carbon black 60 parts, mixed ether fat plasticizer A-8100 10 parts, hexamethylenediamine amino 1.5 parts of formate, 4 parts of active amine accelerator, 2 parts of anti-aging agent KY-405, 2 parts of stearic acid, 0.4 parts of octadecylamine.

[0022] The present invention also proposes a method for preparing the above-mentioned high and low temperature resistant ethylene acrylic acid copolymer. The above-mentioned raw materials are fed into an internal mixer and kneaded to obtain a mixed material, wherein the hardness of the mixed material is 75 degrees, and the strength of the mixed material is 12.8 MPa. The elongation rate is 210%; the mixed material is sent into the open mill for open kneading molding, the kneading molding temperature is 65°C, and then placed in the forming mo...

Embodiment 3

[0024] A high and low temperature resistant ethylene acrylic acid copolymer proposed by the present invention, its raw materials include by weight: 120 parts of ethylene acrylic acid copolymer, 80 parts of carbon black, 12 parts of mixed ether lipid plasticizer A-8100, hexamethylenediamine amino 2 parts of formate, 5 parts of active amine accelerator, 3 parts of anti-aging agent KY-405, 3 parts of stearic acid, 0.5 part of octadecylamine.

[0025] The present invention also proposes the preparation method of the above-mentioned high and low temperature resistant ethylene acrylic acid copolymer, and the above-mentioned raw materials are sent into an internal mixer and mixed to obtain a mixed material, wherein the hardness of the mixed material is 77 degrees, and the strength of the mixed material is 13.4MPa. The elongation rate is 177%; the mixed material is sent into the open mill for open kneading molding, the kneading molding temperature is 70 ° C, and then placed in the form...

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Abstract

The invention discloses a high / low-temperature resisting ethylene acrylic acid copolymer which comprises the following raw materials in parts by weight: 80-120 parts of an ethylene acrylic acid copolymer, 40-80 parts of carbon black, 8-12 parts of a compound ether ester plasticizer, 1-2 parts of hexamethylendiamine carbamate, 3-5 parts of an active amino accelerator, 1-3 parts of an anti-aging agent KY-405, 1-3 parts of stearic acid and 0.3-0.5 part of octadecylamine. The invention further discloses a preparation method of the high / low-temperature resisting ethylene acrylic acid copolymer. The high / low-temperature resisting ethylene acrylic acid copolymer disclosed by the invention is excellent in high temperature resistance and low temperature resistance, low in pressure deformation and excellent in engine oil resistance, crankshaft box mixed gas resistance and ozone aging resistance, and can be used in high temperature as high as 185 DEG C and low temperature as low as minus 45 DEG C, and the service life can be prolonged.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a high and low temperature resistant ethylene acrylic acid copolymer and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the technological level of the automobile industry, all brands of automobiles in the world are vigorously using turbocharged engines to reduce energy consumption and improve engine efficiency. However, the widespread promotion of turbochargers also Encountered many technical problems, such as long-term exposure to hot air aging environment, causing ordinary rubber products to crack and become brittle, and is one of the black hands behind the "car recalls" of many automobile manufacturers in recent years. According to the understanding of many automobile manufacturers, due to the application of the turbo boost system, the heat of the clean air pipe of the car intake system is greatly increased, and the co...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L33/02C08K13/02C08K3/04C08K5/09C08K5/17C08J3/24B29C35/02
CPCC08K13/02B29C35/02C08K3/04C08K5/09C08K5/17C08K5/175C08L2201/08
Inventor 夏迎松付崇智章维国俞晨曦
Owner ANHUI ZHONGDING SEALING PARTS