Ethylene-propylene-diene monomer and chloroprene rubber co-vulcanization material and preparation method therefor

A technology of EPDM and chloroprene rubber, applied in the field of compound rubber, can solve the problems of limited application of EPDM/CR materials and poor performance, and achieve excellent mechanical properties, increase vulcanization rate, and improve the effect of bonding ability.

Inactive Publication Date: 2016-03-16
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the EPDM / CR rubber prepared by the traditional sulfur vulcanization process, the CR phase is often vulcanized relatively completely, while the EPDM phase lacks sulfur or even does not have sulfur, and its performance is poor, which limits the application of EPDM / CR materials.

Method used

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  • Ethylene-propylene-diene monomer and chloroprene rubber co-vulcanization material and preparation method therefor
  • Ethylene-propylene-diene monomer and chloroprene rubber co-vulcanization material and preparation method therefor
  • Ethylene-propylene-diene monomer and chloroprene rubber co-vulcanization material and preparation method therefor

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preparation example Construction

[0058] Correspondingly, the embodiment of the present invention also provides a method for preparing the co-vulcanized material of EPDM rubber and chloroprene rubber as described above, comprising the following steps:

[0059] A) mixing EPDM rubber, silane coupling agent Si69, maleic anhydride and glycidyl methacrylate to obtain modified EPDM rubber;

[0060] Mixing the modified EPDM rubber, carbon black, 1 / 2 mass of stearic acid and 1 / 2 mass of zinc oxide to obtain an EPDM rubber masterbatch;

[0061] Mixing neoprene, magnesium oxide and 1 / 2 quality stearic acid to obtain a neoprene masterbatch;

[0062] B) mixing the EPDM masterbatch, the chloroprene rubber masterbatch, sulfur, vulcanization accelerator and zinc oxide of 1 / 2 quality to obtain a rubber compound;

[0063] C) Vulcanizing the rubber material to obtain a co-vulcanized material of EPDM rubber and chloroprene rubber.

[0064] In the embodiment of the present invention, in the process of preparing EPDM and neopren...

Embodiment 1

[0083] Material formula: 80 parts of EPDM, 20 parts of CR, 10 parts of zinc oxide, 4 parts of magnesium oxide, 6 parts of stearic acid, 20 parts of carbon black N33020 parts, 693 parts of silane coupling agent, 5 parts of MAH, 4 parts of GMA, 1 part of anti-aging agent 4010NA, anti-radiation 10 parts of light agent, 10 parts of waterproofing agent, 1.4 parts of sulfur, 1 part of accelerator ETU, 1.2 parts of accelerator DM, 4 parts of accelerator TMTD.

[0084] The specific preparation method is:

[0085] (1) In the closed rubber mixing machine, modify EPDM. The silane coupling agent Si69, MAH, GMA and EPDM were mixed in a closed rubber mixer until uniform to obtain modified EPDM. Temperature: 120°C. Mixing time: 8min.

[0086] (2) In a closed rubber mixer, prepare EPDM rubber masterbatch. The feeding order is: modified EPDM → 1 / 2 part of stearic acid → 1 / 2 part of zinc oxide → carbon black N330 → antiaging agent 4010NA → accelerator DM. Temperature: 80°C. Mixing time: 8...

Embodiment 2

[0093] Material formula: 70 parts of EPDM, 30 parts of CR, 10 parts of zinc oxide, 4 parts of magnesium oxide, 6 parts of stearic acid, 20 parts of carbon black N33020 parts, 693 parts of silane coupling agent, 5 parts of MAH, 4 parts of GMA, 1 part of anti-aging agent 4010NA, anti-radiation 10 parts of light agent, 10 parts of waterproofing agent, 1.4 parts of sulfur, 1 part of accelerator ETU, 1.2 parts of accelerator DM, 4 parts of accelerator TMTD.

[0094] The specific preparation method is the same as that of the above-mentioned Example 1.

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Abstract

The invention provides an ethylene-propylene-diene monomer and chloroprene rubber co-vulcanization material and a preparation method therefor. The co-vulcanization material is prepared from a mixture through mixing and vulcanization in order. The mixture comprises, by weight, 65-100 parts of ethylene-propylene-diene monomer EPDM, x parts of chloroprene rubber, x being more than 0 and less than 40, 5-10 parts of zinc oxide, 3-4 parts of magnesium oxide, 4-6 parts of stearic acid, 10-30 parts of carbon black, 1-5 parts of silane coupling agent Si69, 1-10 parts of maleic anhydride, 1-5 parts of glycidyl methacrylate, 1-2 parts of sulphur and 4-8 parts of vulcanization accelerator. The silane coupling agent Si69, maleic anhydride and glycidyl methacrylate are employed to process EPDM, the combining capability of EPDM and sulphur is raised, the EPDM phase vulcanization rate is raised, therefore EPDM and chloroprene rubber co-vulcanization effects are improved, and thus EPDM/CR co-vulcanization rubber has excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of composite rubber, in particular to a co-vulcanized material of EPDM rubber and chloroprene rubber and a preparation method thereof. Background technique [0002] The modernization of society has made the rubber industry flourish, and rubber products are widely used in various industries. Among them, ethylene-propylene-diene rubber (EPDM) is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, because of its excellent electrical insulation, low density and high filling, low temperature resistance, heat resistance, ozone resistance Properties such as weather resistance and aging resistance have been widely used, accounting for about 7% of the world's total synthetic rubber consumption, ranking third. However, EPDM has poor self-adhesiveness, poor mutual adhesion, poor flame retardancy, and obvious shortcomings of oil resistance, which limit the application range of EPDM. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/26C08L11/00C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
CPCC08L23/26C08L11/00C08K13/02C08K2003/2296C08K2003/222C08K5/09C08K3/04
Inventor 王文生丁政茂咸旭胜李迎春贺茂勇王志强郭云霞
Owner ZHONGBEI UNIV
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