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Heat-resistant oil-resistant rubber seal ring and preparation method thereof

A technology of oil-resistant rubber and sealing ring, which is applied in the field of rubber composite material processing to achieve the effect of excellent high temperature resistance and reduced strength and elongation

Inactive Publication Date: 2016-12-07
珠海海源密封胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the automobile industry, people have higher requirements for vehicle safety and comfort, so the operating temperature and service life of auto parts are getting higher and higher, such as the temperature resistance requirements of rubber parts related to automobile engines and surrounding areas When the temperature is increased to 150°C, the general nitrile rubber cannot meet the requirements, so we can only choose acrylic rubber, fluororubber, hydrogenated nitrile rubber, etc. with better temperature resistance, but the price of these rubbers is several times that of nitrile rubber

Method used

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  • Heat-resistant oil-resistant rubber seal ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A heat-resistant and oil-resistant rubber sealing ring, which is prepared from the following ingredients in parts by weight: 65 parts of nitrile rubber, 40 parts of carbon black, 7 parts of zinc oxide, 2 parts of stearic acid, 1 part of sulfur, disulfide disulfide 0.5 parts of methyl thiuram, 2 parts of zinc dimethyl dithiocarbamate, 0.2 parts of polyhydroxyisopropyl p-phenylenediamine, 2,2,4-trimethyl-1,2-dichloroquine 1.5 parts of morphine polymer, 1 part of silane coupling agent SG-Si996, 4 parts of trimellitate, 4 parts of hydantoin epoxy resin, 8 parts of bismaleimide modified epoxy resin, 1.2 parts of curing agent 704 8 parts, 8 parts of norbornene-terminated polyimide resin, and 10 parts of alkyd resin.

[0019] The preparation method of the above-mentioned heat-resistant and oil-resistant rubber sealing ring is as follows: (1) Weigh each raw material according to the above-mentioned weight ratio, and mix nitrile rubber, zinc oxide, hard ester, sulfur, bispentame...

Embodiment 2

[0021] A heat-resistant and oil-resistant rubber sealing ring, which is prepared from the following components in parts by weight: 55 parts of nitrile rubber, 30 parts of carbon black, 4 parts of zinc oxide, 1 part of stearic acid, 2.5 parts of sulfur, bis-pentasulfide tetrasulfide 2 parts of methyl thiuram, 0.5 parts of zinc dimethyl dithiocarbamate, 1.5 parts of polyhydroxyisopropyl p-phenylenediamine, 2,2,4-trimethyl-1,2-dichloroquine 0.2 parts of morphine polymer, 2 parts of silane coupling agent SG-Si996, 10 parts of trimellitate, 15 parts of hydantoin epoxy resin, 2 parts of bismaleimide modified epoxy resin, 2.5 parts of curing agent 704 15 parts, 15 parts of norbornene-terminated polyimide resin, and 5 parts of alkyd resin.

[0022] The preparation method of the above-mentioned heat-resistant and oil-resistant rubber sealing ring is as follows: (1) Weigh each raw material according to the above-mentioned weight ratio, and mix nitrile rubber, zinc oxide, hard ester, sul...

Embodiment 3

[0024] A heat-resistant and oil-resistant rubber sealing ring, which is prepared from the following components in parts by weight: 58 parts of nitrile rubber, 33 parts of carbon black, 6 parts of zinc oxide, 1.2 parts of stearic acid, 1.5 parts of sulfur, and bis-pentasulfide tetrasulfide 0.8 parts of methyl thiuram, 1.5 parts of zinc dimethyl dithiocarbamate, 0.5 parts of polyhydroxyisopropyl p-phenylenediamine, 2,2,4-trimethyl-1,2-dichloroquine 1 part of morphine polymer, 1.2 parts of silane coupling agent SG-Si996, 5 parts of trimellitate, 7 parts of hydantoin epoxy resin, 6 parts of bismaleimide modified epoxy resin, 1.5 parts of curing agent 704 10 parts, 10 parts of norbornene-terminated polyimide resin, and 6 parts of alkyd resin.

[0025] The preparation method of the above-mentioned heat-resistant and oil-resistant rubber sealing ring is as follows: (1) Weigh each raw material according to the above-mentioned weight ratio, and mix nitrile rubber, zinc oxide, hard este...

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Abstract

The invention provides a heat-resistant oil-resistant rubber seal ring and a preparation method thereof. The preparation method comprises the following steps: (1) weighing raw materials according to the weight parts, and adding nitrile-butadiene rubber, zinc oxide, stearate, sulfur, bis-pentamethylenethiuram tetrasulfide, zinc dimethyldithiocarbamate, poly-hydroxy isopropyl p-phenylenediamine, a 2,2,4-trimethyl-1,2-dichloroquinoline polymer, a silane coupling agent SG-Si996, trimellitate, a hydantoin epoxy resin, a bismaleimide modified epoxy resin and a curing agent 704 into a Banbury mixer, and banburying; (2) adding the sizing material into an open mill, adding carbon black, a norbornene-terminated polyamide resin and an alkyd resin according to the weight parts, and carrying out compounding forming; (3) adding the formed rubber into a mold of a vulcanizer, and carrying out vulcanization treatment; and (4) carrying out trimming, inspection, packaging and warehousing. The seal ring has the advantages of excellent oil resistance and excellent high-temperature resistance.

Description

technical field [0001] The invention relates to the field of processing rubber composite materials, in particular to a heat-resistant and oil-resistant rubber sealing ring and a preparation method thereof. Background technique [0002] Rubber has good comprehensive properties, such as high adhesion to metal, mechanical properties, fatigue properties, aging resistance, and low heat generation. Rubber sealing rings are used in all walks of life. The rubber sealing ring is an annular cover composed of one or several parts, which is fixed in the gap to form an elastic barrier, which plays the role of barrier and seal. It is divided into liquid seal and air seal, and the oil seal is more complicated in the liquid seal. For example, the rubber sealing ring used on the cylinder, piston and other parts of the car engine must not only achieve the barrier sealing effect, but also because the sealed medium is fuel or lubricating oil, the rubber sealing ring must be oil-resistant, high...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L63/00C08L79/08C08L63/10C08L67/08C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06B29C35/02
CPCB29C35/02C08L9/02C08L2201/08C08L2205/02C08L2205/035C08L63/00C08L79/08C08L63/10C08L67/08C08K13/02C08K3/04C08K2003/2296C08K5/09C08K3/06
Inventor 樊之雄
Owner 珠海海源密封胶有限公司
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