Modified nitrile-butadiene rubber sealing gasket material and preparation method thereof

A technology of nitrile rubber and sealing gasket is applied in the field of modified nitrile rubber sealing gasket material and its preparation, which can solve the problems of unsatisfactory sealing effect, poor wear resistance, low strength, etc., and achieves good pressure resistance and convenient process. , the effect of simple ingredients

Active Publication Date: 2014-08-20
常州市五洲化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing rubber gaskets have defects such as unsatisfactory sealing effec

Method used

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  • Modified nitrile-butadiene rubber sealing gasket material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 100 parts of nitrile rubber and 10 parts of calcium terephthalate (length-to-diameter ratio: 11:1, particle size: 10um) into the internal mixer, heat to 80°C, knead for 3 minutes, then raise the temperature to 135°C, add 5 parts of anti-aging agent 4010, 3 parts of Si69, 5 parts of plasticizer DOP, 2.5 parts of accelerator M, 2 parts of sulfur, knead for 10 minutes, then add 30 parts of carbon black N330, 6 parts of stearic acid and continue kneading for 10 minutes, that is No. 1 rubber compound was obtained.

Embodiment 2

[0016] Add 100 parts of nitrile rubber and 20 parts of magnesium terephthalate (length-to-diameter ratio: 15:1, particle size: 13um) into the internal mixer, heat to 100°C, knead for 5 minutes, then raise the temperature to 135°C, add 1 part of anti-aging agent RD, 5 parts of Si69, 20 parts of plasticizer DTOP, 1 part of accelerator DM, 1 part of sulfur, knead for 5 minutes, then add 15 parts of carbon black N330, 3 parts of stearic acid and continue kneading for 5 minutes to obtain No. 2 Gum.

Embodiment 3

[0018] Add 100 parts of nitrile rubber and 15 parts of zinc terephthalate (with aspect ratio of 7:1 and particle size of 10um) into the internal mixer, heat to 90°C, knead for 4 minutes, then raise the temperature to 135°C, add 3 parts of anti-aging agent MB, 4 parts of Si694, 10 parts of plasticizer DBP, 1.5 parts of accelerator DTDM, 1.5 parts of sulfur, knead for 8 minutes, add 20 parts of carbon black N330, 5 parts of stearic acid and continue kneading for 8 minutes to obtain 3 Rubber material.

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Abstract

The invention relates to a modified nitrile-butadiene rubber sealing gasket material and a preparation method thereof. The modified nitrile-butadiene rubber sealing gasket material is characterized by being prepared from the following raw materials in parts by weight: 100 parts of nitrile-butadiene rubber, 10-20 parts of terephthalic acid metal salt, 1-5 parts of anti-aging agent, 15-30 parts of carbon black N330, 1-2.5 parts of accelerant, 1-2 parts of sulphur, 3-6 parts of stearic acid, 3-5 parts of Si69 and 5-20 parts of plasticizer. The modified nitrile-butadiene rubber sealing gasket material is simple in proportioning, convenient in process and free of hazardous effects on the environment; and in addition, a rubber sealing gasket prepared by using the material is oil-resistant, good in pressure resistance and favorable in sealing effect.

Description

technical field [0001] The invention relates to a modified nitrile rubber sealing gasket material and a preparation method thereof. Background technique [0002] Gasket is a material used for sealing inside machinery, equipment, pipelines, etc. The gaskets currently used are mostly rubber gaskets, which are characterized by high temperature resistance, ozone resistance, natural aging resistance, vacuum resistance, fuel oil resistance, lubricating oil resistance, strong oxidant resistance, chemical resistance and good electrical insulation performance. Widely used in defense industry and civilian industry. However, the existing rubber gaskets have defects such as unsatisfactory sealing effect, poor wear resistance and low strength, which are far from meeting the actual needs. Therefore researching and developing a kind of high-performance rubber gasket has become the task of top priority. Contents of the invention [0003] The purpose of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/04C08K7/02C08K5/098C08K3/04C08K3/06C08K5/09C08K5/12B29B7/00
Inventor 丁玉兰方春平
Owner 常州市五洲化工有限公司
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