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Compound sealing strip with enhanced waterproof performance for switch cabinet

A composite seal and switchgear technology, applied in the field of rubber, can solve the problems of poor sealing, lack of emphasis on wear resistance, fast wear of sealing strips, etc., and achieve the effects of reduced compression permanent deformation, good waterproof performance, and good wear resistance

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
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Effect test

Embodiment Construction

[0014] A composite sealing strip for switchgear with enhanced waterproof performance, made of the following raw materials in parts by weight (kg): EPDM rubber 100, OMMT15, high-density polyethylene 20, molybdenum disulfide 7, polytetrafluoroethylene powder 2. DOP3, dibenzoyl peroxide 0.2, maleic anhydride 4, sulfur powder 2.5, carbon black 12, 2-mercaptobenzimidazole 0.8, accelerator NS0.3, emulsified pitch 3, attapulgite 7, methyl trimethyl Oxysilane 0.6, isopropyl tris(dioctyl pyrophosphate acyloxy) titanate 0.8, absolute ethanol in proper amount.

[0015] The composite sealing strip for switchgear with enhanced waterproof performance 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 granul...

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Abstract

The invention discloses a compound sealing strip with enhanced waterproof performance for a switch cabinet. The compound sealing strip is prepared from the following raw materials in parts by weight: 100 to 105 parts of ethylene-propylene-diene monomer, 15 to 17 parts of OMMT, 20 to 22 parts of high-density polyethylene, 7 to 9 parts of molybdenum disulfide, 2 to 3 parts of polytetrafluoroethylene powder, 3 to 4 parts of DOP, 0.2 to 0.22 part of dibenzoyl peroxide, 4 to 5 parts of maleic anhydride, 2.5 to 3 parts of sulfur powder, 12 to 14 parts of carbon black, 0.8 to 1 part of 2-mercaptobenzimidazole, 0.3 to 0.4 of an accelerator NS, 3 to 4 parts of emulsified asphalt, 7 to 8 parts of attapulgite, 0.6 to 0.7 part of methyl trimethoxy silane, 0.8 to 1 part of isopropyl tris(dioctyl pyrophosphate)titanate, and a proper amount of anhydrous ethanol. The sealing strip prepared according to the invention can be used for sealing an outdoor electric switch cabinet, and has good water-proof performance and good aging resistance.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a composite sealing strip for a switch cabinet with enhanced waterproof performance. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/06C08L27/18C08K13/06C08K9/06C08K9/04C08K3/34C08K3/04C08K3/30
CPCC08L23/16C08L2201/08C08L2205/035C08L51/06C08L27/18C08K13/06C08K9/06C08K9/04C08K3/34C08K3/346C08K3/04C08K2003/3009
Inventor 陆厚平
Owner HEFEI E CHON METAL PLATE TECH CO LTD
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