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Switch cabinet sealing strip added with modified aramid pulp

A modified aramid fiber and sealing strip technology, which is applied in the rubber field, can solve problems such as poor sealing, lack of emphasis on wear resistance, and fast wear of sealing strips, and achieve reduced compression set, excellent sealing performance, and good wear resistance Effect

Inactive Publication Date: 2016-10-26
HEFEI E CHON METAL PLATE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing strip used for the front sealing plate of the switchgear needs to be switched frequently. Due to friction, the sealing strip wears quickly, which easily leads to poor sealing.
Although the EPDM material used for the sealing strip has been modified for aging resistance in the above article, the enhancement of its wear resistance has not been emphasized. This requires the modification of the original sealing strip material to meet the existing requirements demand for switchgear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A switch cabinet sealing strip added with modified aramid pulp, made of the following raw materials in parts by weight (kg): EPDM rubber 100, OMMT15, high-density polyethylene 20, molybdenum disulfide 7, polytetrafluoroethylene Ethylene powder 2, DOP3, dibenzoyl peroxide 0.2, maleic anhydride 4, sulfur powder 2.5, carbon black 12, white oil 4, bis (tert-butyl peroxide isopropyl) benzene 0.9, aramid pulp 8 , hydroxy silicone oil 2, butyl benzyl phthalate 0.8, hollow microspheres 2, hydroxynitrile latex 3, appropriate amount of deionized water.

[0015] The switch cabinet sealing strip added with modified aramid pulp is made by the following specific steps:

[0016] (1) Put high-density polyethylene, DOP, molybdenum disulfide, and polytetrafluoroethylene powder into a high-speed mixer, mix them at a speed of 1000 rpm for 6 minutes, then send them into a twin-screw extruder, add Dibenzoyl peroxide and maleic anhydride are heated to 90°C, extruded and granulated to obtain ...

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PUM

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Abstract

The invention discloses a switch cabinet sealing strip added with a modified aramid pulp. The sealing strip is prepared from the following materials according to parts by weight: 100-105 parts of ethylene-propylene-diene monomer, 15-17 parts of OMMT, 20-22 parts of high-density polyethylene, 7-9 parts of molybdenum disulfide, 2-3 parts of Teflon powder, 3-4 parts of DOP, 0.2-0.22 part of dibenzoyl peroxide, 4-5 parts of maleic anhydride, 2.5-3 parts of sulfur powder, 12-14 parts of carbon black, 4-5 parts of white oil, 0.9-1.1 parts of di-(tert-butyl-peroxy-isopropyl)benzene, 8-9 parts of aramid pulp, 2-3 parts of hydroxyl silicone oil, 0.8-1 part of butyl benzyl phthalate, 2-2.5 parts of hollow microsphere, 3-4 parts of hydroxyl butyronitrile latex, and a proper amount of deionized water. The sealing strip disclosed by the invention is excellent in toughness and relatively good in shock resistance, used for sealing a switch cabinet, excellent in weathering resistance, and longer in service life.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a switchgear sealing strip added with modified aramid pulp. Background technique [0002] The switchgear is a kind of equipment that provides the power needed for people's production and life. Its box body is a sealed structure composed of a front sealing plate, a side sealing plate and a rear sealing plate. However, when several switch cabinets are combined and used, there will be gaps between the spliced ​​side sealing plates. This kind of gap not only affects the overall appearance, but also easily falls into dust or water droplets, which is not enough to block electromagnetic radiation, causing unsafe factors in use. In order to prevent dust, foreign matter or moisture from entering the inside of the switchgear, resulting in performance degradation or damage to the components inside the switchgear, sealed switchgears are used more and more widely, so the requirements for seal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/06C08L27/18C08L77/10C08L83/06C08L15/00C08K13/04C08K7/22C08K5/12C08K5/14C08K3/30C08F255/02C08F222/06B29C35/02
CPCB29C35/02C08F255/02C08K2201/011C08L23/16C08L2201/08C08L2201/14C08L2205/035C08L2205/16C08L51/06C08L27/18C08L77/10C08L83/06C08L15/00C08K13/04C08K7/22C08K5/12C08K5/14C08K2003/3009C08F222/06
Inventor 陆厚平
Owner HEFEI E CHON METAL PLATE TECH CO LTD
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