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A high temperature resistant nitrile rubber material

A technology of nitrile rubber and high temperature resistance, applied in the field of rubber parts, can solve the problems of reducing the lubricating oil resistance of nitrile rubber, increasing the cost, and the high temperature resistance is only 120 ℃, etc., achieving reduced hydrophilicity, moderate cost, and improved The effect of high temperature resistance

Active Publication Date: 2017-10-03
ANHUI ZHONGDING SEALING PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the progress and development of society, the temperature of many oil products is getting higher and higher, so the performance requirements of seals are also getting higher and higher. For example, the temperature resistance requirements of rubber parts involved in automobile engines and surrounding areas have been increased to 130 ℃, but the high temperature resistance of nitrile rubber is only 120 ℃, and the general nitrile rubber cannot meet the requirements
Improving the high-temperature performance of nitrile rubber by hydrogenation saturation will increase the cost too much; by using ethylene-propylene rubber in combination, it will reduce the lubricating oil resistance of nitrile rubber

Method used

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  • A high temperature resistant nitrile rubber material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The high temperature resistant nitrile rubber material of the present invention, its raw material contains following components by weight percentage: nitrile rubber: 50%, silicon dioxide: 14%, calcium silicate: 20%, magnesium oxide: 3%, stearin Acid: 0.3%, 4,4'-bis(2,2-dimethylbenzyl)diphenylamine: 1%, bis(butoxyethoxyethyl)adipate: 10%, diisoperoxide Propylbenzene: 1%, triallyl isocyanurate: 0.7%.

[0023] The high temperature resistant nitrile rubber material of the present invention is prepared according to the following process:

[0024] S1. Send the above raw materials into the internal mixer according to the ratio to obtain synthetic rubber, then detect its hardness, strength and elongation, and filter after detection; wherein, the hardness of the synthetic rubber is 71 degrees, the strength is 17.1MPa, and the elongation is 17.1 MPa. The growth rate is 277%;

[0025] S2. Put the tested synthetic rubber through an open mill at 60°C for kneading and molding, and ...

Embodiment 2

[0028] The high temperature resistant nitrile rubber material of the present invention, its raw material contains the following components by weight percentage: nitrile rubber: 55%, silicon dioxide: 10%, calcium silicate: 18%, magnesium oxide: 4%, stearin Acid: 0.5%, 4,4'-bis(2,2-dimethylbenzyl)diphenylamine: 2%, bis(butoxyethoxyethyl) adipate: 8%, diisoperoxide Propylbenzene: 1.5%, Triallyl Isocyanurate: 1.0%;

[0029] Wherein, the silica is organosilicon-modified silica, the organosilicon is a silane coupling agent, and the silane coupling agent is silane coupling agent A-172; the calcium silicate is surface-modified Calcium silicate, the modifying agent is a coupling agent, and the coupling agent is a mixture of silane coupling agent Si-69 and silane coupling agent KH792 in a ratio of 1:3 parts by weight.

[0030] The high temperature resistant nitrile rubber material of the present invention is prepared according to the following process:

[0031] S1. Send the above raw ...

Embodiment 3

[0035]The high temperature resistant nitrile rubber material of the present invention, its raw material contains following components by weight percentage: nitrile rubber: 60%, silicon dioxide: 11%, calcium silicate: 16.2%, magnesium oxide: 2.5%, stearin Acid: 0.5%, 4,4'-bis(2,2-dimethylbenzyl)diphenylamine: 1.3%, bis(butoxyethoxyethyl) adipate: 5%, diisoperoxide Propylbenzene: 2%, triallyl isocyanurate: 1.5%;

[0036] Wherein, the silica is organosilicon modified silica, and the organosilicon is a silane coupling agent, and the silane coupling agent is silane coupling agent KH-570, silane coupling agent KH-151, silane Coupling agent A-172, a mixture in a ratio of 1:3:2 parts by weight; the calcium silicate is a surface-modified calcium silicate, the modifier is a coupling agent, and the coupling agent is a silane coupling Agent KH550.

[0037] The high temperature resistant nitrile rubber material of the present invention is prepared according to the following process:

[...

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Abstract

The invention discloses a high-temperature resisting nitrile rubber material which comprises the following raw materials in percentage by weight: 50-60% of nitride rubber, 0-15% of silicon oxide, 15-25% of calcium silicate, 2-4% of magnesium oxide, 0.3-0.8% of stearic acid, 1-2% of 4,4'-bi(2,2-dimethyl benzyl) diphenylamine, 5-10% of adipic acid bi(butoxyl ethyoxyl) ester, 1-2% of dicumyl peroxide and 0.5-1.5% of triallyl isocyanurate. The high-temperature resisting nitrile rubber material disclosed by the invention is excellent in high temperature resistance and lubricating oil resistance and low in cost.

Description

technical field [0001] The invention relates to the technical field of rubber parts, in particular to a high-temperature-resistant nitrile rubber material. Background technique [0002] Nitrile rubber is prepared by emulsion polymerization of butadiene and acrylonitrile. Because of the acrylonitrile in its molecular chain, it has excellent lubricating oil resistance, and the high cross-linked structure of the rubber itself. Due to its elasticity, nitrile rubber is widely used in various oil sealing fields. With the progress and development of society, the temperature of many oil products is getting higher and higher, so the performance requirements of seals are also getting higher and higher. For example, the temperature resistance requirements of rubber parts involved in automobile engines and surrounding areas have increased to 130 ℃, but the high temperature resistance of nitrile rubber is only 120 ℃, and the general nitrile rubber cannot meet the requirements. Improvin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08K13/06C08K9/06C08K3/36C08K3/26C08K3/22C08K5/09C08K5/18C08K5/3492C08K5/14B29C35/02
CPCC08K3/22C08K3/34C08K3/36C08K5/09C08K5/14C08K5/18C08K5/34924C08K9/06C08K13/06C08K2003/222C08L2201/08C08L9/02
Inventor 夏迎松张凯张清红晏光福毛学斌
Owner ANHUI ZHONGDING SEALING PARTS