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Ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and preparation method thereof

A technology for EPDM rubber and automobile cooling, which is applied in the field of peroxide vulcanized rubber materials and its preparation, can solve the problems of low compression set performance, achieve high strength performance, resistance to superheated cooling liquid immersion, excellent low Effect of Compression Set Properties

Inactive Publication Date: 2012-01-04
南京金三力高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the high temperature resistance, high heat cooling liquid immersion resistance and low compression set performance of rubber in the prior art, and provide a kind of EPDM rubber material for automobile cooling system seals and its preparation method. The invention uses high-saturation EPDM raw rubber and a specific rubber anti-aging agent, so that the EPDM material of the present invention has high temperature resistance, resistance to overheated cooling liquid immersion and excellent low compression set performance

Method used

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  • Ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and preparation method thereof
  • Ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The EPDM rubber material used for the automobile cooling system seal in this embodiment, its components and percentages are shown in Table 1.

[0025] Table 1 Components and percentages of EPDM material in Example 1

[0026] Raw material name Percentage % EPDM rubber 58 High wear-resistant carbon black 24 semi-reinforcing carbon black 8 Zinc oxide 3 stearic acid 0.7 4,4'bis(phenylisopropyl)diphenylamine 1.5 2-Mercaptomethylbenzimidazole Zinc Salt 0.7 α,α'-Di-tert-butylperoxydicumylbenzene 2.3 triallyl isocyanurate 1.8

[0027] In the above table, EPDM raw rubber is 580HT EPDM rubber produced by American Lion Chemical Company; high wear-resistant carbon black is N330 high wear-resistant carbon black produced by Cabot Company; semi-reinforcing carbon black is N774 semi-reinforcing carbon black produced by Suzhou Baohua Carbon Black Co., Ltd.; zinc oxide is an indirect zinc oxide produced by Zhenjiang Ba...

Embodiment 2

[0040] The EPDM rubber material used for the automobile cooling system seal in this embodiment, its components and percentages are shown in Table 2.

[0041] Table 2 Components and percentages of EPDM materials in Example 2

[0042] Raw material name Percentage % EPDM rubber 53 High wear-resistant carbon black 25 semi-reinforcing carbon black 10 Zinc oxide 5 stearic acid 1 4,4'bis(phenylisopropyl)diphenylamine 1.5 2-Mercaptomethylbenzimidazole Zinc Salt 1 α,α'-Di-tert-butylperoxydicumylbenzene 2 triallyl isocyanurate 1.5

[0043] The source of each component in the above-mentioned table is with embodiment 1, adopts this component and percentage content thereof, and its preparation method is as follows:

[0044] (1) Masterbatch mixing:

[0045] Put the EPDM raw rubber in the internal mixer for 60 seconds to masticate the raw rubber and the powder compounding agent to ensure the product performance, and then ...

Embodiment 3

[0052] The EPDM material used for the automobile cooling system seal in this embodiment, its components and percentages are shown in Table 3.

[0053] Table 3 Components and percentages of EPDM material in Example 3

[0054] Raw material name Percentage % EPDM rubber 56 High wear-resistant carbon black 23.5 semi-reinforcing carbon black 9 Zinc oxide 5 stearic acid 0.5 4,4'bis(phenylisopropyl)diphenylamine 1 2-Mercaptomethylbenzimidazole Zinc Salt 0.5 α,α'-Di-tert-butylperoxydicumylbenzene 2.5 triallyl isocyanurate 2

[0055] The source of each component in the above-mentioned table is with embodiment 1, adopts this component and percentage content thereof, and its preparation method is as follows:

[0056] (1) Master batch mixing:

[0057] Put the EPDM raw rubber in the internal mixer for 80 seconds to masticate the raw rubber and the powder compounding agent to ensure the product performance, and then add ...

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Abstract

The invention discloses an ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and a preparation method thereof, belonging to the field of rubber materials and preparation methods thereof. The ethylene propylene diene monomer rubber material disclosed by the invention is prepared from the following components in percentage by mass: 53-58% of ethylene propylene diene monomer unvulcanized rubber, 20-25% of high-wear-resistance carbon black, 5-10% of semi-reinforcing carbon black, 3-5% of zinc oxide, 0.5-1.0% of stearic acid, 1.0-1.5% of 4,4'-di(phenylisopropyl)diphenylamine, 0.5-1.0% of 2-thiol tolimidazole zinc salt, 2.0-2.5% of alpha,alpha'-bis(tert-butylperoxy)diisopropylbenzene and 1.5-2.0% of triallyl isocyanurate. The preparation method comprises the following steps: mixing master batch; carrying out two-section sulfurization on the master batch; and vulcanizing. The ethylene propylene diene copolymer rubber sealing element material disclosed by the invention has the advantages of high temperature resistance, overheated coolant immersion resistance and excellent low compression permanent set, improves the elasticity and compression permanent set of the rubber, and ensures the high strength of the rubber, thereby satisfying the service performance of the material.

Description

technical field [0001] The invention relates to the field of EPDM rubber materials and preparation methods thereof, and more specifically relates to a peroxide vulcanization system rubber material based on highly saturated EPDM rubber and a preparation method thereof. Background technique [0002] Automobile water cooler is an indispensable and important part of automobile engine cooling system. When the combustible mixer is burning, the gas temperature in the cylinder is as high as 2073~2273K. etc.), if it is not cooled in time, the moving parts will destroy the normal gap due to thermal expansion, or be stuck due to the failure of lubricating oil at high temperature, and the mechanical strength of the components will be reduced or even damaged due to high temperature. Therefore, in order to avoid overheating of the engine, it is necessary to cool the engine components working under high temperature conditions to ensure the normal operation of the engine. [0003] Rubber s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/22C08K5/18C08K5/37C08K5/14B29C35/00
Inventor 徐海潮芮巧红李月华
Owner 南京金三力高分子科技有限公司
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