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Sealing rubber for aeronautical sealing ring

A sealant and sealing ring technology, applied in the field of sealing ring preparation, can solve problems such as poor peeling resistance, and achieve the effects of strong adhesion and strong oxidation resistance.

Inactive Publication Date: 2019-02-22
江苏伊顿航天材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under high pressure, the peel strength is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A sealant for an aerospace sealing ring, comprising the following components in parts by weight: 35 parts of polyurethane rubber, 15 parts of silicon rubber, 10 parts of acrylate, 6 parts of nano-carbon, 12 parts of bisphenol A epoxy resin, 20-35 parts of filler, 20 parts of silane-modified polyether polymer, 10 parts of tackifier, 1-3 parts of wear-resistant carbon black, 3 parts of castor oil, 18 parts of 1,4-butanediol, phthalic acid 1 part of dioctyl ester, 0.5 part of vulcanizing agent, 20 parts of ginkgo biloba extract.

[0018] Wherein, the filler includes ceramic powder, kaolin, carbon black, fly ash and straw powder mixed according to a molar ratio of 10:20:1:25.

[0019] As an improvement, in the preparation method of the silane-modified polyether polymer, polyethylene glycol monomethyl ether, siloxane, and chitosan are mixed and put into a reaction kettle, heated to melt, and then moved into an extruder Extrude in middle to get silane modified polyether poly...

Embodiment 2

[0025] A sealant for aerospace sealing rings, comprising the following components in parts by weight: 38 parts of polyurethane rubber, 16 parts of silicon rubber, 15 parts of acrylate, 12 parts of nano-carbon, and 12-18 parts of bisphenol A epoxy resin Parts, 32 parts of filler, 24 parts of silane modified polyether polymer, 12 parts of tackifier, 1-3 parts of wear-resistant carbon black, 5 parts of castor oil, 20 parts of 1,4-butanediol, phthalic acid 6 parts of dioctyl ester, 2.8 parts of vulcanizing agent, 25 parts of tea extract.

[0026] Wherein, the filler includes ceramic powder, kaolin, carbon black, fly ash and straw powder mixed according to a molar ratio of 15:26:2:28.

[0027] The preparation method of the silane-modified polyether polymer comprises mixing polyethylene glycol monomethyl ether, siloxane, and chitosan into a reaction kettle, heating to melt, and then moving into an extruder to extrude, namely A silane-modified polyether polymer was obtained.

[002...

Embodiment 3

[0032] A sealant for an aerospace sealing ring, comprising the following components in parts by weight: 40 parts of polyurethane rubber, 20 parts of silicon rubber, 20 parts of acrylate, 14 parts of nano-carbon, 18 parts of bisphenol A epoxy resin, 20-35 parts of filler, 30 parts of silane-modified polyether polymer, 15 parts of tackifier, 3 parts of wear-resistant carbon black, 8 parts of castor oil, 24 parts of 1,4-butanediol, dioctyl phthalate 8 parts of ester, 3 parts of vulcanizing agent, 30 parts of Ginkgo biloba extract.

[0033] Wherein, the filler includes ceramic powder, kaolin, carbon black, fly ash and straw powder mixed according to a molar ratio of 18:28:3:30.

[0034] The preparation method of the silane-modified polyether polymer comprises mixing polyethylene glycol monomethyl ether, siloxane, and chitosan into a reaction kettle, heating to melt, and then moving into an extruder to extrude, namely A silane-modified polyether polymer was obtained.

[0035] Whe...

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Abstract

The invention discloses a sealing rubber for an aeronautical sealing ring. The sealing rubber comprises the following components in parts by weight: 35-40 parts of polyurethane rubber, 15-20 parts ofsilicon rubber, 10-20 parts of acrylate, 6-14 parts of nanocarbon, 12-18 parts of bisphenol A epoxy resin, 20-35 parts of filler, 20-30 parts of silane-modified polyether polymer, 10-15 parts of tackifier, 1-3 parts of wear-resistant carbon black, 3-8 parts of castor oil, 18-24 parts of 1,4-butanediol, 1-8 parts of dioctyl phthalate, 0.5-3 parts of vulcanizing agent and 20-30 parts of plant extracts. Compared with the prior art, the sealing rubber for the aeronautical sealing ring, disclosed by the invention, is strong in adhesive force, resistant to strip at high pressure, high in oxidation resistance and suitable for use as an aeronautical material.

Description

technical field [0001] The invention relates to the technical field of sealing ring preparation, in particular to a sealant for aerospace sealing rings. Background technique [0002] With the rapid development of aerospace technology, in order to meet the needs of scientific and technological exploration, it is necessary to prepare high-quality aerospace supplies. As the name suggests, the sealant plays the role of sealing, how to improve the sealing effect of aerospace products is a topic worth exploring. Otherwise, accidents caused by air leakage cannot be underestimated. [0003] Application number 201711206427.7 discloses an oil-resistant silicone rubber sealant, which is characterized in that the mass ratio of its raw material components is: 30-50 parts of silicone rubber, 20-50 parts of fluororubber, 10-15 parts of tackifier, 10-20 parts of filler, 10-20 parts of calcium stearate, 1-10 parts of vinyl tributylketoxime silane, 2-5 parts of white carbon black, 1-3 par...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L83/04C08L63/00C08L97/02C08K3/04C08K5/12C08K3/013C08K3/34C08K7/26
CPCC08K2201/011C08L75/04C08L2205/035C08L83/04C08L63/00C08L97/02C08K3/04C08K5/12C08K3/013C08K3/346C08K7/26
Inventor 郭伟刘爽
Owner 江苏伊顿航天材料股份有限公司
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