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Ethylene-propylene-diene monomer rubber seal ring

A technology of EPDM rubber and sealing rubber ring, which is applied in the field of rubber preparation, can solve the problems of lack of electrical insulation and chemical medium corrosion resistance, weather resistance, ozone resistance, poor heat resistance, medium and environmental pollution, etc. Achieve good electrical insulation and chemical medium corrosion resistance, enhanced heat resistance, and simple composition

Inactive Publication Date: 2014-03-26
CONGLIN GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber sealing ring made by this process has the following disadvantages: pollution to the medium and the environment, poor weather resistance, ozone resistance, heat resistance, and lack of good electrical insulation and chemical medium corrosion resistance

Method used

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  • Ethylene-propylene-diene monomer rubber seal ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An EPDM sealing rubber ring, the components of which are calculated in parts by weight: 100 parts of EPDM rubber, 1.2 parts of sulfur, 2.6 parts of accelerator CZ, 3.5 parts of zinc oxide, and 0.5 parts of stearic acid , 70 parts of carbon black, 75 parts of light calcium, 35 parts of naphthenic oil, 1 part of anti-aging agent 4010NA, and 1 part of anti-scorch agent CTP. After the above-mentioned components are subjected to conventional rubber preparation methods, that is, mixing, extrusion and vulcanization processes, the finished EPDM sealing rubber ring is obtained, and its performance tests are shown in Table 1.

Embodiment 2

[0019] A kind of EPDM sealing rubber ring, its components are counted as follows in parts by weight: 140 parts of EPDM rubber, 1.2 parts of sulfur, 2.6 parts of accelerator, 3.5 parts of zinc oxide, 1 part of stearic acid, carbon 63 parts of black, 75 parts of light calcium, 20 parts of naphthenic oil, 1 part of anti-aging agent 4010NA and 1 part of anti-scorch agent CTP. After the above-mentioned components are subjected to conventional rubber preparation methods, that is, mixing, extrusion and vulcanization processes, the finished EPDM sealing rubber ring is obtained, and its performance tests are shown in Table 1.

Embodiment 3

[0021] An EPDM sealing rubber ring, the components of which are calculated in parts by weight: 195 parts of EPDM rubber, 1.2 parts of sulfur, 2.6 parts of accelerator DM, 3.5 parts of zinc oxide, and 2 parts of stearic acid , 60 parts of carbon black, 75 parts of light calcium, 10 parts of naphthenic oil, 1 part of anti-aging agent D, and 1 part of anti-scorch agent CTP. After the above-mentioned components are subjected to conventional rubber preparation methods, that is, mixing, extrusion and vulcanization processes, the finished EPDM sealing rubber ring is obtained, and its performance tests are shown in Table 1.

[0022] Table 1 The performance comparison table of each embodiment and natural rubber

[0023]

[0024] As can be seen from Table 1, compared with natural rubber, the weather resistance, ozone resistance and heat resistance of the EPDM rubber obtained by the present invention are significantly enhanced, and also have good electrical insulation and chemical med...

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Abstract

The invention relates to an ethylene-propylene-diene monomer rubber seal ring, and belongs to the technical field of rubber preparation. The ethylene-propylene-diene monomer rubber seal ring comprises the following components in parts by weight: 100 to 195 parts of ethylene-propylene-diene monomer rubber, 1.2 parts of sulphur, 2.6 parts of accelerant, 3.5 parts of zinc oxide, 0.5 to 2 parts of stearic acid, 70 to 60 parts of carbon black, 75 parts of light calcium carbonate, 35 to 10 parts of naphthenic oil, 1 part of antiager, and 1 part of scorch retarder CTP (Cytidine Triphosphate). The ethylene-propylene-diene monomer rubber seal ring has the advantages that the components are simple, the raw materials are low in price and easy to obtain, the prepared ethylene-propylene-diene monomer rubber does not pollute a medium and environment, and the weather resistance, ozone resistance and heat resistance are obviously improved; in addition, the ethylene-propylene-diene monomer rubber seal ring is also good in electrical insulating property and high in resistance to corrosion of a chemical medium.

Description

technical field [0001] The invention belongs to the technical field of rubber preparation, in particular to a EPDM sealing rubber ring. Background technique [0002] The existing process for making rubber sealing rubber rings includes process steps such as mixing, extrusion, and vulcanization, wherein the rubber used in the mixing step is styrene-butadiene or natural rubber, and then combined with sulfur, accelerators, zinc oxide, Stearic acid, carbon black, light calcium, naphthenic oil, anti-aging agent and other auxiliary materials. The rubber sealing ring produced by this process has the following disadvantages: pollution to the medium and the environment, poor weather resistance, ozone resistance, and heat resistance, and lack of good electrical insulation and chemical medium corrosion resistance. Contents of the invention [0003] The invention aims at the deficiencies in the prior art, and provides an EPDM sealing rubber ring which is green and environment-friendly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/06C08K3/22C08K5/09C08K3/04C08K3/26
CPCC08K13/02C08K3/04C08K3/06C08K3/22C08K3/26C08K5/09C08K2003/2296C08K2003/265C08L2201/08C08L23/16
Inventor 李瑞清赵华一曲景勇王兰军
Owner CONGLIN GROUP
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