Iron-nickel magnetic reinforcing ethylene propylene diene monomer sealing rubber strip

A technology of EPDM rubber and sealing strip, applied in the rubber field, can solve the problems such as lack of wear resistance, poor sealing, and rapid wear of the sealing strip, and achieve the reduction of compression permanent deformation, excellent sealing performance, good resistance grinding effect

Inactive Publication Date: 2016-12-07
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] An iron-nickel magnetically reinforced EPDM rubber sealing strip, which is made of the following raw materials in parts by weight (kg): EPDM 100, OMMT15, high-density polyethylene 20, molybdenum disulfide 7, polytetrafluoroethylene Vinyl fluoride powder 2, DOP3, dibenzoyl peroxide 0.2, maleic anhydride 4, sulfur powder 2.5, carbon black 12, tetramethylthiuram disulfide 3, solid sodium hydroxide 9, silane coupling agent kh570 0.8 , an appropriate amount of absolute ethanol, nickel chloride 7.1, ferric chloride 2.7, and hydrazine hydrate 75 with a concentration of 80wt%.

[0015] The described iron-nickel magnetically reinforced EPDM rubber sealing strip 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...

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PUM

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Abstract

The invention discloses an iron-nickel magnetic reinforcing ethylene propylene diene monomer sealing rubber strip which is prepared from the following raw materials in 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 polytetrafluoroethylene 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, 3-4 parts of tetramethyl thiuram disulfide, 9-10 parts of solid natrium hyelroxide, 0.8-1 part of silane coupling agent kh570, a proper amount of absolute ethyl alcohol, 7.1-7.5 parts of nickel chloride, 2.7-3 parts of ferric chloride and 75-80 parts of hydrazine hydrate with the concentration of 80 wt%. The iron-nickel magnetic reinforcing ethylene propylene diene monomer sealing rubber strip can be used as seals of a switch cabinet and an equipment cabinet of an electronic device, is not only excellent in sealability, but also can shield electromagnetic radiation, and decreases electromagnetic-wave interference.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an iron-nickel magnetically reinforced EPDM rubber sealing strip. 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 fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/06C08L27/18C08K13/06C08K9/06C08K3/08C08K3/30C08K3/34C08K3/06C08K3/04C08J3/22
CPCC08J3/226C08J2323/16C08J2451/06C08K2201/01C08L23/16C08L2201/08C08L2205/03C08L51/06C08L27/18C08K13/06C08K9/06C08K2003/0856C08K2003/0862C08K2003/3009C08K3/346C08K3/06C08K3/04
Inventor 陆厚平
Owner HEFEI E CHON METAL PLATE TECH CO LTD
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