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Ethylene propylene diene monomer-based sealing part and preparation method thereof

A technology of EPDM rubber and seals, which is applied in the field of EPDM rubber-based seals and its preparation, can solve the problems of poor gas barrier performance, large compression deformation, insulation and gas permeability that cannot meet the sealing performance, Leak-proof performance and other issues, to achieve the effect of excellent insulation performance, small deformation, low implementation cost

Inactive Publication Date: 2018-02-09
CHENGDU SHENGBANG SEALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production of existing and commonly used EPDM products, the performance of EPDM products is often affected due to problems such as the selection, proportioning, and process of auxiliary raw materials, mainly due to the existence of compression Due to the shortcomings of large deformation and poor gas barrier performance, its insulation and gas permeability cannot meet the needs of occasions with high requirements for sealing performance, leak-proof performance and insulation performance.

Method used

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  • Ethylene propylene diene monomer-based sealing part and preparation method thereof
  • Ethylene propylene diene monomer-based sealing part and preparation method thereof
  • Ethylene propylene diene monomer-based sealing part and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] An EPDM rubber-based seal, comprising the following components expressed in parts by weight: 100 parts of EPDM, 0.5 parts of stearic acid, 6 parts of zinc oxide, 1 part of anti-aging agent MB, 1 part of anti-aging agent RD, white 50 parts of carbon black, 30 parts of inorganic filler, 1 part of carbon black, 1.5 parts of dispersant, 3 parts of polyethylene glycol, 3 parts of silane coupling agent, 2.5 parts of triallyl isocyanurate, 3.5 parts of vulcanizing agent .

[0027] The preparation method of above-mentioned EPDM rubber-based seal is as follows figure 1 As shown, it specifically includes the following steps:

[0028] In the first step, put EPDM, stearic acid, zinc oxide, anti-aging agent, dispersant, and polyethylene glycol into an internal mixer for mixing. The mixing time is 2 minutes, and the temperature is controlled at 60°C.

[0029] In the second step, the carbon black, the inorganic filler and the mixed rubber in the first step above are mixed, the mixin...

Embodiment 2

[0036] A EPDM rubber-based seal, comprising the following components expressed in parts by weight: 100 parts of EPDM, 0.3 parts of stearic acid, 3 parts of zinc oxide, 0.5 parts of anti-aging agent MB, 0.5 parts of anti-aging agent RD, white 40 parts of carbon black, 20 parts of inorganic filler, 0.5 parts of carbon black, 1 part of dispersant, 2 parts of polyethylene glycol, 2 parts of silane coupling agent, 2 parts of triallyl isocyanurate, 2 parts of vulcanizing agent .

[0037] The preparation method of above-mentioned EPDM rubber-based seal is as follows figure 1 As shown, it specifically includes the following steps:

[0038] Step 1: Put EPDM, stearic acid, zinc oxide, anti-aging agent, dispersant, and polyethylene glycol into an internal mixer for mixing. The mixing time is 2.5 minutes, and the temperature is controlled at 65°C.

[0039] In the second step, the carbon black, the inorganic filler and the mixed rubber in the first step above are mixed, the mixing time i...

Embodiment 3

[0046]A EPDM rubber-based seal, comprising the following components expressed in parts by weight: 100 parts of EPDM, 1 part of stearic acid, 8 parts of zinc oxide, 2 parts of anti-aging agent MB, 2 parts of anti-aging agent RD, white 60 parts of carbon black, 40 parts of inorganic filler, 2 parts of carbon black, 3 parts of dispersant, 4 parts of polyethylene glycol, 5 parts of silane coupling agent, 4 parts of triallyl isocyanurate, 5 parts of vulcanizing agent .

[0047] The preparation method of above-mentioned EPDM rubber-based seal is as follows figure 1 As shown, it specifically includes the following steps:

[0048] In the first step, put EPDM, stearic acid, zinc oxide, anti-aging agent, dispersant, and polyethylene glycol into an internal mixer for mixing. The mixing time is 3 minutes, and the temperature is controlled at 70°C.

[0049] In the second step, the carbon black, the inorganic filler and the mixed rubber in the first step above are mixed, and the mixing ti...

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Abstract

The invention provides an ethylene propylene diene monomer (EPDM)-based sealing part and a preparation method thereof. The ethylene propylene diene monomer-based sealing part is prepared from the following components in parts by weight: 100 parts of EPDM, 0.3 to 1 part of stearic acid, 3 to 8 parts of zinc oxide, 1 to 4 parts of an anti-ageing agent, 40 to 60 parts of white carbon black, 20 to 40parts of inorganic filling, 0.5 to 2 parts of carbon black, 1 to 3 parts of a dispersant, 2 to 4 parts of polyethylene glycol, 2 to 5 parts of a silane coupling agent, 2 to 4 parts of triallyl isocyanurate and 2 to 5 parts of a vulcanizing agent. According to the ethylene propylene diene monomer-based sealing part provided by the invention, a mass ratio of all the components is strictly controlledso that the cross-linking density of a rubber material is increased and a sealing part product keeps relatively high physical and mechanical performance; meanwhile, the permanent compression deformation is reduced; the ethylene propylene diene monomer-based sealing part has excellent insulating performance and airtight performance and has relatively small deformation under high temperature; the ethylene propylene diene monomer-based sealing part has the prominent advantages of simple preparation method, easiness for operation, low implementation cost and the like.

Description

technical field [0001] The invention relates to the technical field of manufacturing EPDM-based seals, in particular to an EPDM-based seal for high-voltage electrical equipment and a preparation method thereof. Background technique [0002] In the power system, there are a large number of high-voltage electrical equipment, and once some important equipment fails, it will directly threaten the stable operation of the entire power system. Therefore, in order to ensure the safe operation of power systems and electrical equipment, higher requirements are put forward for rubber seals used in high-voltage electrical equipment. The insulation performance, compression set performance and gas barrier performance have a great influence on the sealing and service life of rubber products. [0003] EPDM rubber has high chemical stability, excellent heat resistance, aging resistance, good chemical resistance and electrical insulation, and has the smallest specific gravity compared with o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L71/02C08K13/02C08K5/09C08K3/22C08K3/36C08K3/04C08K5/3437B29B7/00
CPCC08L23/16B29B7/005C08L2201/14C08K2003/2296C08L71/02C08K13/02C08K5/09C08K3/22C08K3/36C08K3/04C08K5/3437B29B7/7495B29B7/183B29B7/90B29B7/286
Inventor 邹兴平叶梅王少波
Owner CHENGDU SHENGBANG SEALS
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