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A high temperature resistant sealing ring material

A sealing ring, high temperature resistant technology, applied in the field of high temperature resistant sealing ring materials, can solve the problems of poor sealing effect, large deformation at high temperature, short life, etc.

Active Publication Date: 2020-05-26
联泓(江苏)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of large high-temperature deformation, poor sealing effect, and short life of the sealing material in the prior art, and provide a high-temperature-resistant sealing ring material, which has a three-dimensional network structure and can be used continuously in high-temperature environments. Use, injection molding processing, can be used for sealing electrical components

Method used

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  • A high temperature resistant sealing ring material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Vulcanized EPDM rubber resin is processed from the following raw materials and production processes in parts by weight: 100 parts of EPDM rubber, 4.5 parts of paraffin oil, 2 parts of dicumyl peroxide, 2 parts Parts of liquid polybutadiene, 2.5 parts of triallyl isocyanurate, 0.4 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester.

[0024] First, add other components except the dicumyl peroxide component into a high-speed mixer for mixing, transfer to a twin-screw extruder with an aspect ratio of 36 for melt extrusion, and the temperature of the extruder is set as follows: Zone 1 , 150°C, 155°C in zone 2, 160°C in zone 3, 165°C in zone 4, 165°C in zone 5, 170°C in zone 6, 175°C in zone 7, 180°C in zone 8, and 180°C for mouth film; Dry at 80°C for 30 minutes. The above granules were mixed with dicumyl peroxide, then mixed by a high-speed mixer, and then transferred to a twin-screw extruder with an aspect ratio of 44 for melt extru...

Embodiment 2

[0026] With 49.8 parts of high RTI polypropylene resin, 39.4 parts of vulcanized EPDM rubber (embodiment 1), 10.3 parts of ethylene and methyl acrylate copolymer, 0.5 part of four [β-(3,5-di-tertiary Butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester is added to the high-speed mixer, the speed of the high-speed mixer is 300±50rpm, and the mixing time is 2 minutes; then it is transferred to a twin-screw extruder with an aspect ratio of 40 for melting For extrusion granulation, the extruder temperature settings are as follows: Zone 1, 145°C, Zone 2, 150°C, Zone 3, 155°C, Zone 4, 160°C, Zone 5, 165°C, Zone 6, 170°C, Zone 7, 175°C, Zone 8 175°C, Zone 9 175°C, Oral Membrane 180°C. After water-cooling granulation, cutting into 2-3mm granules, and then staying in an oven at 80°C for 30 minutes, the high-temperature-resistant sealing ring material of the present invention is obtained.

Embodiment 3

[0028] With 30.1 parts of high RTI polypropylene resin, 58.4 parts of vulcanized EPDM rubber (embodiment 1), 9.8 parts of ethylene and ethyl acrylate copolymer, 0.8 parts of four [β-(3,5-ditertiary Butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.4 parts of tris (2,4-di-tert-butylphenyl) phosphite, and 0.5 parts of carbon black masterbatch are added to the high-speed mixer, and the high-speed mixer The rotation speed is 350±50rpm, and the mixing time is 1.5 minutes; then it is transferred to a twin-screw extruder with an aspect ratio of 44 for melt extrusion and granulation. The extruder temperature is set as follows: Zone 1, 145°C, Zone 2, 150°C, Zone 3 is 155°C, Zone 4 is 160°C, Zone 5 is 165°C, Zone 6 is 170°C, Zone 7 is 175°C, Zone 8 is 175°C, Zone 9 is 175°C, Zone 10 is 180°C, and the mouth film is 180°C. After water-cooling and granulation, cut into 2-3mm granules, and then stay in an oven at 80°C for 30 minutes, the high-temperature-resistant black sealing ri...

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Abstract

The invention provides a high-temperature resistant sealing ring material. The high-temperature resistant sealing ring material is prepared from high-RTI polypropylene resin, vulcanized ethylene propylene terpolymer rubber, acrylic resin and an antioxidant. The sealing ring material provided by the invention has a special three-dimensional network structure and has the characteristics of high-temperature resistance and high toughness; and through injection molding, the sealing ring material can be bonded to electronic components, plays roles in carrying out insulating and sealing and can be applied to heat-resistant electronic components and devices.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to the field of sealing materials, and further relates to a high temperature resistant sealing ring material. Background technique [0002] With the improvement of living standards, miniaturized and intelligent electronic and electrical products are more and more popular. Button batteries are usually used as an independent power source in these electronic appliances, and many electronic appliances have a high temperature working environment, such as rice cookers, tire pressure sensors, high-temperature thermometers, etc., which need to be able to work continuously at higher temperatures. The product is used in a harsh environment, and the requirements for sealing materials are also relatively high. Traditional materials have been difficult to meet the application requirements. [0003] At present, the button battery is generally sealed with a nylon ring or a rubber ring. After a lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/16C08L47/00C08L23/08C08L91/06C08K5/14C08K5/3492C08K5/134C08K13/02C08K3/04C08K5/526
CPCC08L23/12C08L23/16C08L2201/08C08L2203/20C08L2205/02C08L2205/035C08L47/00C08L23/0869C08L91/06C08K5/14C08K5/3492C08K5/1345C08K13/02C08K3/04C08K5/526
Inventor 吴集钱韦景然李鸣峰李方
Owner 联泓(江苏)新材料研究院有限公司