Sealing element for sealing against sulfur hexafluoride gas

A technology of sulfur hexafluoride gas and sealing components, which is applied in household components, engine seals, engine components, etc., can solve the problems of EPDM loss of physical and mechanical properties, improve high temperature resistance and chemical stability, and enhance mechanical strength , to avoid the effect of permanent failure

Active Publication Date: 2021-06-25
ZHEJIANG BAILANGSHI RUBBER & PLASTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the side groups of the EPDM polymer chain will be oxidized, and the main chain will also undergo thermal rearrangement and degradation, making EPDM lose its physical and mechanical properties.

Method used

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  • Sealing element for sealing against sulfur hexafluoride gas
  • Sealing element for sealing against sulfur hexafluoride gas
  • Sealing element for sealing against sulfur hexafluoride gas

Examples

Experimental program
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preparation example Construction

[0045] Embodiments of the present invention also provide a method of preparing a tri-pharmaceutical rubber sealing material for the preparation of a three-membered ethyl propylene rubber sealing material according to any embodiment of the present invention, wherein the preparation method comprises:

[0046] S102. Trimethylene ethylene ethylenevin, lignin and carbon black are added to the immonization machine, and the first mixture is obtained under a temperature condition of 100 ° C to 120 ° C and cooled to room temperature under temperature conditions of 100 ° C to 120 ° C.

[0047] S104. The first mixture, graphene modified hydroxyapatite, paraffin oil, inorganic oxide reinforcer, N-phenyl-α-aniline, phthalate, and phthalate obtained by step S102 The sulfur is added to the immonization machine, and the second mixture is obtained under pressure conditions of 120 ° C to 140 ° C and 20 mPa to 10 MPa.

[0048] S106. The second mixture obtained by step S104 is placed under temperatur...

Embodiment 1

[0064] This embodiment provides a method of preparing a three-membered ethylene propylene rubber sealing material, and the specific steps are as follows. 20 parts by mass of the three-dimensional ethylene ethylene rubber, 25 parts by mass of lignin and 25 parts by mass of carbon black were added to the immanther, mixed 10 min after 10 min and cooled to room temperature under temperature conditions of 100 ° C. mixture. The first mixture, 12 parts by mass of graphene modified hydroxyapatite, 4 parts by mass of paraffin oil, 10 parts by mass of inorganic oxide reinforcing agent, 2 parts by mass N-phenyl-α-aniline, 1.5 parts by mass of phthalate and 0.5 parts by mass of sulfur addition, the second mixture was obtained under a temperature condition of 120 ° C and under pressure conditions of 10 MPa. The second mixture was placed at a temperature of 60 ° C for 16 h, and a three-membered ethylene propylene rubber sealing material was obtained. Among them, the graphe-modified hydroxyapati...

Embodiment 2

[0066] This embodiment provides a method of preparing a three-membered ethylene propylene rubber sealing material, and the specific steps are as follows. 25 parts by mass of TriMG rubber, 20 parts by mass of lignin and 20 parts by mass of carbon black were added to the immanther, mixed 50 min after the temperature conditions of 120 ° C and cooled to room temperature, obtained the first mixture. The first mixture, 12 parts by mass of graphene modified hydroxyapatite, 6 parts by mass of paraffin oil, 12 parts by mass of inorganic oxide reinforcing agent, 2 parts by mass N-phenyl-α-aniline, 2.5 parts by mass of phthalate and 0.5 parts by mass of sulfur were added to the immonization machine, under temperature conditions of 140 ° C and 10 min under pressure conditions of 8 MPa were obtained, and the second mixture was obtained. The second mixture was placed under temperature conditions at 80 ° C for 12 h to obtain a three-membered ethylene propylene rubber sealing material. Among them...

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Abstract

The invention relates to a sealing element for sealing sulfur hexafluoride gas. The sealing element includes: a sealing element body, and the sealing element body is made of EPDM material. The sealing element and the EPDM sealing material of the present invention have excellent sealing performance and can be applied to many fields such as automobile manufacturing, electrical equipment, and construction. The sealing element of the present invention is an ultra-low compression permanent deformation sealing element for ultra-high pressure resistant to sulfur hexafluoride gas, which is especially suitable for sealing the sulfur hexafluoride gas monitoring device.

Description

Technical field [0001] The present invention relates to the technical field of rubber sealing elements, and more particularly to a sealing element for sealing hexafluoride sulfur gases. Background technique [0002] Tri-mer & 5 is widely used in automotive parts, waterproof materials such as construction, electrical equipment, etc. For example, the current high-pressure transmission industry generally uses a fully enclosed SF6 (Sulfur Sulfur, Sulfur HexaFluoride) gas combined insulation high-pressure appliances typically monitored by the SF6 gas monitoring device. Its sealing requirements of SF6 gas in the closed system are high, and it is desirable to improve the service life of the product in meet the sealing performance. Excellent sealing performance has a wide range of application prospects in the SF6 gas monitoring device. [0003] Among them, as the material used as a sealing element, the compression set is one of the important indicators of measuring the performance of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/10F16J15/3284F16F15/08F16F15/02C08L23/16C08L97/00C08L91/06C08K13/02C08K3/04C08K9/02C08K3/32C08K5/18C08K9/08C08K3/36B29D99/00
CPCB29D99/0053C08K2003/325C08L23/16C08L2205/03F16F15/022F16F15/08F16J15/104F16J15/108F16J15/328F16J15/3284C08L97/005C08L91/06C08K13/02C08K3/04C08K9/02C08K3/32C08K5/18C08K9/08C08K3/36
Inventor 黄春方阮恩毅
Owner ZHEJIANG BAILANGSHI RUBBER & PLASTIC TECH CO LTD
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