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A kind of oil-resistant tear-resistant rubber seal material and preparation method thereof

A rubber seal and tear-proof technology, applied in the field of rubber materials, can solve the problems of insufficient oil resistance and insufficient tear resistance.

Active Publication Date: 2020-07-17
广东贝洛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of oil-resistant tear-resistant rubber seal material and its preparation method, to solve the problems in the patent document "EPDM rubber material for automobile cooling system seal and its preparation method (authorized announcement number: CN102304255B) "On the basis of the disclosed oil-resistant tear-resistant rubber seal material, how to optimize the components, dosage, methods, etc., to solve the problems of insufficient oil resistance and tear resistance of the oil-resistant tear-resistant rubber seal material

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preparation example Construction

[0026] The preparation method of the oil-resistant and anti-tear rubber seal material comprises the following steps:

[0027] (1) Masterbatch mixing: Put EPDM raw rubber in an internal mixer and masticate for 60-80 seconds, then add zinc oxide, stearic acid, 4,4'-bis(phenylisopropyl ) diphenylamine and 2-mercaptomethylbenzimidazole zinc salt mixed for 30-40 seconds, adding high wear-resistant carbon black and semi-reinforcing carbon black and mixing for 80-100 seconds, then raising the temperature for 100-120 seconds, mixing When the temperature reaches 130-140°C, the glue is discharged, and the master batch is parked for more than 16 hours;

[0028] (2) Two-stage vulcanization of masterbatch: place the parked masterbatch on the roller of the open mill, and add α,α'-di-tert-butyl peroxide di Cumene, triallyl isocyanurate, casein, ultra-fine barium sulfate, and oligomeric lactic acid compounding agents are all mixed into the masterbatch and then kneaded, and the rubber is made i...

Embodiment 1

[0031] A kind of oil-resistant and anti-tearing rubber seal material is united by weight, comprises following raw material: 56 parts of EPDM raw rubber, 23.5 parts of high wear-resistant carbon black, 7.5 parts of semi-reinforcing carbon black, 4 parts Zinc oxide, 0.75 parts of stearic acid, 1.25 parts of 4,4'-di(phenylisopropyl) diphenylamine, 0.75 parts of 2-mercaptomethylbenzimidazole zinc salt, 2.25 parts of α , α'-di-tert-butyl peroxide dicumyl peroxide, 1.75 parts of triallyl isocyanurate, 5 parts of casein, 6 parts of superfine barium sulfate, 12 parts of oligomeric lactic acid.

[0032] The particle diameter of the ultrafine barium sulfate is 0.1mm.

[0033] The molecular weight of the oligolactic acid is 1000.

[0034] The EPDM raw rubber is 580HT EPDM rubber produced by American Lion Chemical Company, the high wear-resistant carbon black is N330 high wear-resistant carbon black produced by Cabot Company, and the semi-reinforcing carbon black is Suzhou Bao N774 semi...

Embodiment 2

[0040] A kind of oil-resistant and anti-tearing rubber seal material, in parts by weight, includes the following raw materials: 53 parts of EPDM raw rubber, 25 parts of high wear-resistant carbon black, 5 parts of semi-reinforcing carbon black, 5 parts Zinc oxide, 0.5 parts of stearic acid, 1.5 parts of 4,4'-di(phenylisopropyl) diphenylamine, 0.5 parts of 2-mercaptomethylbenzimidazole zinc salt, 2.5 parts of α , α'-di-tert-butyl peroxide dicumyl peroxide, 1.5 parts of triallyl isocyanurate, 7 parts of casein, 4 parts of superfine barium sulfate, 16 parts of oligomeric lactic acid.

[0041] The particle diameter of the ultrafine barium sulfate is 0.2mm.

[0042] The molecular weight of the oligolactic acid is 500.

[0043] The EPDM raw rubber is 580HT EPDM rubber produced by American Lion Chemical Company, the high wear-resistant carbon black is N330 high wear-resistant carbon black produced by Cabot Company, and the semi-reinforcing carbon black is Suzhou Bao N774 semi-reinf...

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Abstract

The invention discloses an oil-resisting and anti-tearing rubber sealing member material and a preparation method thereof and belongs to the field of rubber materials. The oil-resisting and anti-tearing rubber sealing member material is prepared from the following raw materials: raw ethylene propylene diene monomer, high-wear-resisting carbon black, semi-reinforcing carbon black, zinc oxide, stearic acid, 4,4'-di(phenylisopropyl)diphenylamine, zinc 2-mercaptobenzimidazole, alpha,alpha'-di(tert-butylperoxyisopropyl)benzene, triallyl isocyanurate, casein, superfine barium sulfate and oligomericlactic acid; the oil-resisting and anti-tearing rubber sealing member material is prepared through mixing master batch, adding sulfur into the master batch by two sections, vulcanizing and the like. According to the oil-resisting and anti-tearing rubber sealing member material, the casein, the superfine barium sulfate and oligomeric lactic acid are used as a reinforcing system, so that the anti-tearing performance and the oil resistance of the oil-resisting and anti-tearing rubber sealing member material are improved.

Description

technical field [0001] The invention belongs to the field of rubber materials, and in particular relates to an oil-resistant and tear-resistant rubber seal material and a preparation method thereof. Background technique [0002] Oil-resistant seals have special requirements for the formulation of rubber materials, and the products are required to have high oil resistance, high heat resistance, and high air tightness. The usual 41 nitrile rubber formula is not as oil-resistant, heat-resistant, and air-tight as hydrogenated nitrile rubber and chlorohydrin rubber, but hydrogenated nitrile rubber and chlorohydrin rubber are expensive and costly; therefore, oil-resistant seals (cylinder gaskets) The improvement of oil resistance, heat resistance, air tightness and cost saving must be researched and practiced. For this reason, the rubber formula has been researched and invented. Rubber seals are the core components of automobile water coolers, and their cooling effect directly de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L67/04C08L89/00C08K13/02C08K3/04C08K3/22C08K5/18C08K3/30
CPCC08K2003/2296C08K2003/3045C08K2201/014C08L23/16C08L2205/03C08L67/04C08L89/00C08K13/02C08K3/04C08K3/22C08K5/18C08K3/30
Inventor 不公告发明人
Owner 广东贝洛新材料科技有限公司