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High and low temperature resistant and oil resistant blending material and preparation method thereof

A technology of high and low temperature resistance and oil resistance, which is used in the field of high and low temperature and oil resistant blend materials and preparation, can solve the problems of poor heat resistance of POE and limited application, and achieve the effects of improved oil resistance, wide operating temperature range and low production cost.

Active Publication Date: 2012-11-21
SHANDONG TAIRUIFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor heat resistance of POE, this also greatly limits its application in the field of elastomers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0016] First use silicone rubber and POE to blend evenly in an internal mixer, the blending ratio is 80:100; add peroxide curing agent 1,1-di-tert-butyl peroxy-3,3,5-trimethylcyclo Hexane dynamic vulcanization, the blending ratio of vulcanizing agent and silicone rubber is 200:1; the dynamic vulcanization temperature is 130°C-150°C, the rotor speed of the internal mixer is 70r, and the time is 12min; the POE-based thermoplastic elastomer modified by silicone rubber is obtained .

[0017] The POE-based thermoplastic elastomer prepared above is blended with ethylene-propylene rubber on an open mill, and the blending ratio is 1:1. After the blending is uniform, an appropriate amount of white carbon black reinforcing agent is added to improve the high and low temperature resistance of ethylene-propylene rubber. A blend of materials that is oil resistant.

Embodiment approach 2

[0019] First use silicone rubber and POE to blend in the internal mixer, the blending ratio is 80:100, add an appropriate amount of silica reinforcing agent and blend evenly, the amount of silica is 50% of the amount of silicone rubber; add peroxide Vulcanizing agent 1,1-di-tert-butylperoxy-3,3,5-trimethylcyclohexane dynamic vulcanization, the blending ratio of vulcanizing agent and silicone rubber is 200:1; dynamic vulcanization temperature 130°C-150°C , the rotor speed of the internal mixer is 70r, and the time is 12min; the POE-based thermoplastic elastomer modified by silicone rubber is obtained.

[0020] The POE-based thermoplastic elastomer prepared above is blended with ethylene-propylene rubber on an open mill, the blending ratio is 1:1, the temperature of the front roller of the double-roller open mill is 60°C, and the temperature of the rear roller is 65°C, and the mixing is uniform; Adjust the roller distance to 3mm and place the film for later use.

Embodiment approach 3

[0022] First use silicone rubber and POE to blend in the internal mixer, the blending ratio is 80:100, add peroxide curing agent 1,1-di-tert-butyl peroxy-3,3,5-trimethylcyclohexane The blending ratio of alkane, vulcanizing agent and silicone rubber is 200:1; the temperature of the internal mixer is 70°C-90°C for discharge, the rotor speed of the internal mixer is 70r, and the time is 2min; the blended rubber of silicone rubber and POE is obtained. Form thin strips with a thickness of 2mm and a width of 3mm up and down in the mill, and park for subsequent use.

[0023] The above blended rubber was put into a twin-screw extruder with an aspect ratio of 40:1 for reaction processing to prepare a silicone rubber-modified POE-based thermoplastic elastomer. The temperature of the feeding section is 130°C, the temperature of the plasticizing section is 150°C, the temperature of the extrusion section is 160°C, and the screw speed is 120r.

[0024] The POE-based thermoplastic elastomer...

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PUM

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Abstract

A high and low temperature resistant and oil resistant EPDM blend and a preparation method thereof. The high and low temperature resistant and oil resistant material is prepared by blending three polymers comprising EPDM, POE and silicon rubber. The material comprises the following components (wt.%): 40-50% of EPDM, 20 - 30% of POE, 15-20% of silicone rubber, 5-10% of white carbon black, and 0.1-0.2% of peroxide vulcanizing agent. The blend material provided by the invention has wider usage temperature range than the EPDM, can be used at -50-170 DEG C for a long term, and has oil resistance and insulation performance better than those of EPDM, and advantages of low cost and good processing technology, etc.

Description

technical field [0001] The invention relates to a method for modifying EPDM rubber with silicone rubber and ethylene octene elastomer. Specifically, silicone rubber and POE are mixed uniformly in a banbury mixer, and a peroxide vulcanizing agent is added in a banbury mixer or twin-screw. Dynamic vulcanization in an extruder to obtain a silicone rubber-modified POE-based thermoplastic elastomer, which is blended with ethylene-propylene rubber to prepare a rubber material that improves the high and low temperature oil resistance of ethylene-propylene rubber. Background technique [0002] As a polymer material with both organic and inorganic properties, silicone rubber has excellent high and low temperature resistance, weather resistance, aging resistance, low compression set and excellent electrical insulation properties compared with ordinary organic rubber. The use of silicone rubber (MVQ) to modify EPDM rubber can significantly improve the heat resistance and cold resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/08C08L83/07C08K3/36C08K5/14
Inventor 肖建斌刘伟李建芳
Owner SHANDONG TAIRUIFENG NEW MATERIAL CO LTD