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EPDM rubber sealing strip with sound insulating effect enhanced through porous modified filler

A technology of EPDM rubber and sealing strips, which is applied in the field of rubber, can solve the problems of poor sealing, fast wear of sealing strips, and no emphasis on wear resistance, etc., to achieve reduced compression set, good wear resistance, and excellent sealing performance 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 EPDM sealing strip with a porous modified filler to enhance the sound insulation effect, made of the following raw materials in parts by weight (kg): EPDM 100, OMMT15, high-density polyethylene 20, molybdenum disulfide 7, PTFE powder 2, DOP3, dibenzoyl peroxide 0.2, maleic anhydride 4, sulfur powder 2.5, carbon black 12, crosslinking agent TAIC0.4, paraffin oil 4, coal gangue 8, wood powder 5, carboxylate Methylcellulose 1.5, appropriate amount of deionized water, silane coupling agent KH560 0.8.

[0015] The EPDM sealing strip with a porous modified filler to enhance the sound insulation effect 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 a wear-resistant ...

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PUM

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Abstract

The invention discloses an EPDM rubber sealing strip with sound insulating effect enhanced through a porous modified filler. The EPDM rubber sealing strip is prepared from, by weight, 100-105 parts of EPDM rubber, 15-17 parts of OMMT (organic montmorillonite), 20-22 parts of high-density polyethylene, 7-9 parts of molybdenum disulfide, 2-3 parts of polytetrafluoroethylene powder, 3-4 parts of DOP (dioctyl phthalate), 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, 0.4-0.5 part of cross-linking agent TAIC, 4-5 parts of paraffin oil, 8-9 parts of gangue, 5-6 parts of wood powder, 1.5-2 parts of carboxymethyl cellulose, a proper amount of deionized water and 0.8-1 part of silane coupling agent KH560. The sealing strip can be used for sealing products like mechanical cabinets and electric switch cabinets, has good sound-absorbing effect, can lower noise generated when machines run and is environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an EPDM rubber sealing strip with a porous modified filler to enhance the sound insulation effect. 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 mo...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/06C08L27/18C08L1/28C08K13/06C08K9/04C08K9/06C08K3/30C08K3/34C08K3/04C08K3/06C08F255/02C08F222/06
CPCC08F255/02C08L23/16C08L2203/20C08L2205/035C08L2207/062C08L23/06C08L27/18C08L1/286C08K13/06C08K9/04C08K9/06C08K2003/3009C08K3/34C08K3/04C08K3/06C08K3/346C08F222/06
Inventor 陆厚平
Owner HEFEI E CHON METAL PLATE TECH CO LTD
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