Blend rubber of silicone rubber and ethylene propylene diene monomer, and preparation method thereof

A technology of EPDM rubber and blended rubber, which is applied in the field of silicone materials, can solve the problems of difficulty in improving the performance of EPDM rubber and poor compatibility, and achieve good physical properties, good compatibility, and improved mechanical properties Effect

Active Publication Date: 2020-06-09
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since EPDM rubber is a non-polar rubber and has poor compatibility with silicone rubber, it is difficult to improve the performance of EPDM rubber even if the two rubbers are directly blended.

Method used

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  • Blend rubber of silicone rubber and ethylene propylene diene monomer, and preparation method thereof
  • Blend rubber of silicone rubber and ethylene propylene diene monomer, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, the blend glue of silicone rubber and EPDM rubber

[0045] In terms of parts by mass, it is prepared from the following raw material formula:

[0046] Methyl vinyl silicone rubber raw rubber includes 20 parts of vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.04%; vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.2% 20 parts of raw rubber; Mooney 30, 25 parts of ethylene propylene raw rubber with 40% vinyl content and 3 ENB content; 35 parts of Mooney 60, 80% vinyl content, 35 parts of ethylene propylene raw rubber with ENB content 5; the specific surface area is 380m 2 55 parts of fumed white carbon black / g; 5 parts of hydroxyl silicone oil; 8 parts of hexamethyldisilazane; 5 parts of dimethyldimethoxysilane; 2.5 parts of hydrogen silicone oil; 1 part of distilled water; 3 parts of silane coupling agent KH570; 3 parts of zinc oxide; 1 part of calcium stearate; 4 parts of cerium oxide; 2.8 parts ...

Embodiment 2

[0053] Embodiment 2, the blend glue of silicone rubber and EPDM rubber

[0054] In terms of parts by mass, it is prepared from the following raw material formula:

[0055]Methyl vinyl silicone rubber raw rubber includes 20 parts of vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.04%; vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.2% 25 parts of raw rubber; Mooney 30, 25 parts of ethylene propylene raw rubber with vinyl content 40%, ENB content 3; Mooney 60, 30 parts of ethylene propylene raw rubber with vinyl content 80%, ENB content 5; specific surface area is 380m 2 55 parts of fumed white carbon black / g; 8 parts of hydroxyl silicone oil; 8 parts of hexamethyldisilazane; 5 parts of dimethyldimethoxysilane; 2.5 parts of hydrogen silicone oil; 1 part of distilled water; 3 parts of silane coupling agent KH570; 3 parts of zinc oxide; 1 part of calcium stearate; 4.5 parts of cerium oxide; 3 parts of dicumyl peroxide...

Embodiment 3

[0062] Embodiment 3, the blend glue of silicone rubber and EPDM rubber

[0063] In terms of parts by mass, it is prepared from the following raw material formula:

[0064] Methyl vinyl silicone rubber raw rubber includes 10 parts of vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.04%; vinyl-terminated methyl vinyl silicone rubber with a vinyl molar content of 0.2% 25 parts of raw rubber; Mooney 30, 35 parts of ethylene propylene raw rubber with 40% vinyl content and 3 ENB content; Mooney 60, 30 parts of ethylene propylene raw rubber with 80% vinyl content and 5 ENB content; the specific surface area is 380m 2 55 parts of fumed white carbon black / g; 8 parts of hydroxyl silicone oil; 8 parts of hexamethyldisilazane; 5 parts of dimethyldimethoxysilane; 2.5 parts of hydrogen silicone oil; 1 part of distilled water; 3 parts of silane coupling agent KH570; 3 parts of zinc oxide; 1 part of calcium stearate; 3.5 parts of cerium oxide; 3 parts of dicum...

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Abstract

The invention belongs to the field of organic silicon materials, and particularly relates to blended rubber of silicone rubber and ethylene propylene diene monomer, and a preparation method thereof. The blend rubber of the silicone rubber and the ethylene propylene diene monomer is prepared from the following raw materials: raw methyl vinyl silicone rubber, raw ethylene propylene diene monomer, fumed silica, hydroxyl silicone oil, hexamethyl disilazane, dimethyldimethoxysilane, a silane coupling agent, methyl-terminated hydrogen-containing silicone oil, distilled water, zinc oxide, cerium oxide, calcium stearate, an accelerator, dicumyl peroxide, sulfur and auxiliary cross-linking agent. The silicone rubber and the ethylene propylene diene monomer in the blend rubber are good in compatibility, and the blend rubber has good mechanical properties and certain aging resistance.

Description

technical field [0001] The invention belongs to the field of organic silicon materials, and in particular relates to a blend rubber of silicone rubber and EPDM rubber and a preparation method thereof. Background technique [0002] EPDM rubber is a chain polymer material with poor performance. When it is vulcanized and cross-linked to form a three-dimensional network structure, the performance of the rubber can be improved, which is suitable for the production of molded rubber rollers. However, as the requirements for its use environment and service life are continuously raised, EPDM rubber needs to have better aging resistance and other properties. [0003] The basic principle of aging resistance is that the effects of aging factors such as heat, oxygen, light and ozone cause chemical reactions such as crosslinking or degradation of EPDM rubber, thereby reducing performance. Thermal oxidative aging is a free radical chain autocatalytic oxidation reaction in a variety of use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L83/07C08L83/04C08L83/05C08K13/02C08K3/36C08K3/22C08K5/098C08K3/06C08K5/14C08K5/40C08K5/47
CPCC08K2003/2213C08K2003/2296C08L23/16C08L83/04C08L2201/08C08L2205/025C08L2205/035C08K13/02C08K3/36C08K3/22C08K5/098C08K3/06C08K5/14C08K5/40C08K5/47
Inventor 李凯陈桂忠周游吴家伟何东伍龙潘汉新
Owner SHANDONG UNIV
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