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High temperature resistant and low compression permanent deformation ethylene propylene diene monomer and preparation method thereof

A technology of EPDM rubber and low-pressure change, which is applied in the field of EPDM rubber and its preparation, can solve the problems of poor high temperature resistance and compression set performance, and difficulty in meeting the use requirements, so as to improve flame resistance and high temperature Compression set performance and high temperature aging resistance, anti-aging effect

Inactive Publication Date: 2019-11-26
ANHUI LIXIN RUBBER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The most important feature of EPDM rubber is its superior oxidation resistance, ozone resistance and corrosion resistance. Since EPDM rubber belongs to the polyolefin family, it has excellent vulcanization properties, but EPDM rubber is A kind of flammable substance, the prior art sulfur-vulcanized EPDM rubber has poor high temperature resistance and compression set performance, and it is difficult to meet the requirements of use

Method used

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  • High temperature resistant and low compression permanent deformation ethylene propylene diene monomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1. Kneading: knead 100g EPDM raw rubber, 20g neoprene, and 0.6g zinc stearate in a vacuum kneader for 3-5 minutes, first add 30g graphene to the organic solvent tetrahydrofuran, and ultrasonically 5min to form a uniform and stable dispersion, then add the dispersion to the kneaded silica gel, continue ultrasonic stirring, the raw rubber mixture will gather into the graphene oxide sheet structure in the form of intercalation, and the solvent molecules will continue to desorb in the form of Ensure the entropy balance of the system, finally form a stable intercalation structure, remove the solvent by rotary evaporation to obtain a graphene / rubber composite material, add 0.2g BaSO in 3-4 times 4 , 50g carbon black N990, 5g zinc oxide, 0.1g 2-mercaptobenzimidazole, 0.2g dioctyl adipate, 0.1g carnauba wax, stir and mix at 10-50 rpm Heat treatment for 10-30min under certain conditions, then vacuumize at -0.07- -0.05Mpa, after vacuuming for 30-60 minutes, the glue will come ou...

Embodiment 2

[0027] S1. Kneading: knead 100g EPDM raw rubber, 30g chloroprene rubber, and 3g zinc stearate in a vacuum kneader for 3-5 minutes, first add 50g graphene to the organic solvent tetrahydrofuran, and ultrasonicate for 5 minutes Form a uniform and stable dispersion, then add the dispersion to the kneaded silica gel, continue to stir ultrasonically, the raw rubber mixture will gather into the graphene oxide sheet structure in the form of intercalation, and the solvent molecules will continue to be desorbed to ensure The entropy balance of the system finally forms a stable intercalation structure, and the solvent is removed by rotary evaporation to obtain a graphene / rubber composite material. Add 0.8g BaSO4, 40g carbon black N990, 40g glass beads, 10g zinc oxide, 0.2g 2-mercaptobenzimidazole, 0.4g dioctyl adipate, 0.4g carnauba wax, stir and mix at 10-50 rpm, heat treatment at 60-90°C for 10-30min, and then vacuum -0.07- -0.05Mpa, after vacuuming for 30-60 minutes, the glue will co...

Embodiment 3

[0031] S1. Kneading: Knead 100g EPDM raw rubber, 25g neoprene rubber, and 1g zinc stearate in a vacuum kneader for 3-5 minutes, first add 40g graphene to the organic solvent tetrahydrofuran, and ultrasonicate for 5 minutes Form a uniform and stable dispersion, then add the dispersion to the kneaded silica gel, continue to stir ultrasonically, the raw rubber mixture will gather into the graphene oxide sheet structure in the form of intercalation, and the solvent molecules will continue to be desorbed to ensure The entropy balance of the system finally forms a stable intercalation structure, and the solvent is removed by rotary evaporation to obtain a graphene / rubber composite material. Add 0.6g BaSO4, 60g carbon black N990, 8g zinc oxide, 0.2g 2-mercaptobenzene in 3-4 times Imimidazole, 0.2g dioctyl adipate, 0.2g carnauba wax, stir and mix evenly at 10-50 rpm, heat treatment at 60-90°C for 10-30min, and then vacuumize to -0.07- -0.05Mpa, after vacuuming for 30-60 minutes, the g...

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Abstract

The invention discloses a high temperature resistant and low compression permanent deformation ethylene propylene diene monomer, which comprises the following components by mass: 100 parts of raw ethylene propylene diene monomer, 20-30 parts of chloroprene rubber, 30-50 parts of graphene, 5-10 parts of zinc oxide, 0.6-3 parts of zinc stearate, 0.2-0.8 part of BaSO4, 50-80 parts of a reinforcing filler, 10-15 parts of benzoyl peroxide, 1-3 parts of a vulcanizing assistant, and 0.5-1 part of a composite additive. By means of mixing, remilling and vulcanization, the ethylene propylene diene monomer can be prepared, and has the advantages of good mechanical properties, high temperature resistance, low compression permanent deformation and easy edge tearing.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a high-temperature and low-pressure deformation-resistant EPDM rubber and a preparation method thereof. Background technique [0002] EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. The annual world consumption is 800,000 tons. With the increase of domestic and foreign automobile demand and production and sales, the quality of automobiles and parts The requirements in terms of aspects are constantly improving, and the requirements for the use environment and resilience of hoses are also getting higher and higher, and higher requirements are also put forward for the heat resistance and low compression set performance of EPDM rubber. [0003] The most important feature of EPDM rubber is its superior oxidation resistance, ozone resistance and corrosion resistance. Since EPDM rubber belongs to the polyolefin family, it has excellent vulcanizat...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L11/00C08K13/02C08K3/22C08K5/098C08K3/30C08K3/04C08K13/04C08K7/20C08J3/24
CPCC08J3/247C08J2323/16C08J2411/00C08K2003/2296C08K2003/3045C08L23/16C08L2201/02C08L2201/08C08L11/00C08K13/02C08K3/042C08K3/22C08K5/098C08K3/30C08K3/04C08K13/04C08K7/20
Inventor 汪必宽王明
Owner ANHUI LIXIN RUBBER TECH CO LTD
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