Environment-friendly foaming rolling fiber reinforcement sealing liner material

A fiber-reinforced, sealing gasket technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of poor sealing performance of sealing materials, and achieve the effect of good oil resistance and improved liquid resistance

Active Publication Date: 2013-05-22
舟山海山机械密封材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is the deficiency of poor sealing performance of existing sealing materials

Method used

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  • Environment-friendly foaming rolling fiber reinforcement sealing liner material

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Embodiment Construction

[0018] The present invention will be further described below.

[0019] Environment-friendly foaming roll-pressed fiber-reinforced sealing gasket material, its composition and weight percentage are:

[0020] Fiber 20%, rubber 20%, filler 50%, foaming agent 3%, crosslinking agent 3%, compounding agent 3%, activator 1%.

[0021] The fiber is composed of aramid pulp fiber and mineral fiber, the mass ratio of the two is 3:2; the rubber is nitrile rubber; the filler is kaolin or calcium carbonate; the foaming agent is organic ADC hair foaming agent; the crosslinking agent is blocked isocyanate; the compounding agent is composed of vulcanizing agent, antioxidant and coloring agent; the activator is stearic acid.

[0022] The foaming agent is a sulfonyl hydrazide foaming agent.

[0023] The weight ratio of vulcanizing agent, antioxidant and colorant in the compounding agent is 4:2:1.

[0024] A method for manufacturing an environment-friendly foaming roll-pressed fiber-reinforced s...

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Abstract

The invention relates to an environment-friendly foaming rolling fiber reinforcement sealing liner material which belongs to the field of sealing materials. The material comprises the following components in weight percent: 5-36% of fiber, 8-20% of rubber, 50-70% of filler, 3-15% of foaming agent, 0.3-8% of cross-linking agent, 0.8-6% of compounding agent and 0.5-2% of activating agent. Aramid pulp fiber and mineral fiber are used for replacing asbestos fiber, so that harm to human bodies which is generated in a production process and a liner using process is avoided, and a liner material with good oil resistance, water resistance, deformation resistance and air tightness is provided; stearic acid is fully utilized to increase dispersibility; and compensation sealing of the material in the state of unsmooth sealing surface, uneven surface stress and small bolt torque is solved through utilizing high compression ratio generated by a plurality of micropores which are formed after foaming and uniformly distributed, moreover, good deformation resistance is obtained, and an excellent sealing effect of common surface stressing is obtained.

Description

technical field [0001] The invention relates to an environment-friendly foaming roller-pressed fiber-reinforced sealing gasket material, which belongs to the field of sealing materials. Background technique [0002] Asbestos rubber sheet material is used for traditional engine and pipeline sealing gasket materials, but asbestos is harmful to the human body, and it does not have the characteristics of oil resistance and poor air tightness, and because the material produced by the traditional rolling process is too dense and the compression rate is too high Small, generally the actual production compression rate is between 7% and 12%. Therefore, this too small compression rate (excellent hardness) makes the rolling material face uneven sealing surface, uneven surface pressure, and small bolt torque. It is difficult to produce a compensation seal, which is a major defect of rolled materials and a worldwide problem. Contents of the invention [0003] The purpose of the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L77/10C08K13/04C08K7/04C08K3/34C08K3/26C08K5/29C08K5/09C08J9/10C08J5/04C09K3/10
Inventor 施中堂姚志海
Owner 舟山海山机械密封材料股份有限公司
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