Self-lubricating fluorinated silicone rubber seal ring

A fluorosilicone rubber and sealing ring technology, applied in the field of self-lubricating fluorosilicone rubber sealing rings, can solve the problems of difficult bonding, difficult to handle thermal vulcanization bonding, etc., to overcome difficult bonding, excellent performance, and uniform vulcanization. Effect

Inactive Publication Date: 2015-11-18
宁国市格斯特密封件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] PTFE and fluorosilicone rubber each have excellent properties, but there is still no sealing ring product combining the two on the market. The main reason is that when PTFE and fluorosilicone rubber are vulcanized simultaneously, the two materials There is a big difference in shrinkage. The thermal vulcanization bonding between pure PTFE and fluorosilicone rubber is difficult to deal with, so the combination of the two is more difficult. Therefore, the development of new process methods is very important for the production of products that combine the two. , which is of great significance to improve the performance of the sealing ring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Self-lubricating fluorosilicone rubber sealing ring, made of the following components by weight: 40 parts by weight of fluorosilicone rubber, 30 parts by weight of polytetrafluoroethylene, 10 parts by weight of NBR, 8 parts by weight of BR, 1 part by weight of stearic acid, and 1 part by weight of MB , Quickly extrude 5 parts by weight of carbon black, 3 parts by weight of filler, 3 parts by weight of vulcanizing agent, 2 parts by weight of accelerator and 2 parts by weight of dispersant.

[0018] Fillers include bentonite, carbon black, kaolin, naphthenic oil, and mica powder, and the addition ratio of bentonite, carbon black, kaolin, naphthenic oil, and mica powder is 2:3:1.5:1:0.5.

[0019] The accelerator is made of the following components in parts by weight: 3 parts by weight of zinc oxide, 1 part by weight of di-o-tolylguanidine, 2 parts by weight of zinc bisulfide, and 1 part by weight of dibenzothiazole disulfide.

[0020] The dispersant is prepared from the fo...

Embodiment 2

[0024] Self-lubricating fluorosilicone rubber sealing ring, which is made of the following parts by weight: 45 parts by weight of fluorosilicone rubber, 35 parts by weight of polytetrafluoroethylene, 11 parts by weight of NBR, 9 parts by weight of BR, 1.5 parts by weight of stearic acid, MB. 5 parts by weight, 5.5 parts by weight of quick extruded carbon black, 3.5 parts by weight of filler, 4 parts by weight of vulcanizing agent, 2.5 parts by weight of accelerator and 2.5 parts by weight of dispersant.

[0025] The filler includes bentonite, carbon black, kaolin, naphthenic oil, and mica powder, and the addition ratio of the bentonite, carbon black, kaolin, naphthenic oil, and mica powder is 2:3:1.5:1:0.5.

[0026] The accelerator is made of the following components in parts by weight: 4 parts by weight of zinc oxide, 1.5 parts by weight of di-o-tolylguanidine, 2.5 parts by weight of zinc specific sulfur, and 1.5 parts by weight of dibenzothiazole disulfide.

[0027] The disp...

Embodiment 3

[0031] The self-lubricating fluorosilicone rubber sealing ring is made of the following parts by weight: fluorosilicone rubber, 40 parts by weight of polytetrafluoroethylene, 12 parts by weight of NBR, 10 parts by weight of BR, 2 parts by weight of stearic acid, and 2 parts by weight of MB, Quickly extrude 6 parts by weight of carbon black, 4 parts by weight of filler, 5 parts by weight of vulcanizing agent, 3 parts by weight of accelerator and 3 parts by weight of dispersant.

[0032] The filler includes bentonite, carbon black, kaolin, naphthenic oil, and mica powder, and the addition ratio of the bentonite, carbon black, kaolin, naphthenic oil, and mica powder is 2:3:1.5:1:0.5.

[0033] The accelerator is made of the following components in parts by weight: 5 parts by weight of zinc oxide, 2 parts by weight of di-o-tolylguanidine, 3 parts by weight of zinc bisulfide, and 2 parts by weight of dibenzothiazole disulfide.

[0034] The dispersant is made of the following compone...

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PUM

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Abstract

A self-lubricating fluorinated silicone rubber seal ring relates to the technical field of seal rings, and is characterized by comprising fluorinated silicone rubber, and a PTFE (Polytetrafluoroethylene) thin film arranged on the surface layer of the fluorinated silicone rubber. The invention further provides a production method of the fluorinated silicone rubber seal ring. The production method is characterized by comprising the following steps: injection molding, bonding, hot-forming, cutting and punching. The self-lubricating fluorinated silicone rubber seal ring has the excellent properties of abrasion resistance, pressure resistance and the like, and can be used in complex or bad environments requiring relatively high requirements. The production method has the advantages that the problem of difficulty in bonding polytetrafluoroethylene with fluorinated silicone rubber is solved; the production speed is fast; the machining quality is high.

Description

Technical field: [0001] The invention relates to the technical field of sealing rings, in particular to a self-lubricating fluorosilicone rubber sealing ring. Background technique: [0002] Polytetrafluoroethylene is called "non-stick coating" or "easy-clean wok material"; it is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material is resistant to acid and alkali, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can be used for lubrication. After special treatment, PTFE film can be molded and compounded with natural rubber, butyl rubber, silica gel, EPDM rubber, etc. PTFE and rubber are firmly bonded and do not separate layers, and can be used as flange gaskets and test tube bottles Cover gasket, furniture gasket, medicine bottle cap gasket, etc. It can be used in che...

Claims

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Application Information

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IPC IPC(8): C08L83/08C08L27/18C08L9/02C08L9/00C08K13/06C08K3/34C08K3/04C08K3/22C08K5/31C08K5/47
Inventor 朱德敏
Owner 宁国市格斯特密封件有限公司
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