Formula and preparation method of high-elongation high-temperature-resistant fluororubber for rubber pipes

A technology of high elongation and fluororubber, which is applied in the field of fluororubber formulation and its preparation, can solve the problems of fluororubber being easy to crack, and achieve the effect of improving low temperature performance and excellent elongation at break

Inactive Publication Date: 2016-05-11
NANJING ORIENTLEADER TECH CO LTD
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Problems solved by technology

[0004] The present invention mainly aims at the problem that fluororubber is easy to crack under high temperature under stress. Carbon nanotubes and zinc oxide are added to fluororubber to improve the heat resistance of fluororubber at high temperature and provide a high elongation resistant Fluorine rubber formula for high temperature rubber hose and its preparation method

Method used

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  • Formula and preparation method of high-elongation high-temperature-resistant fluororubber for rubber pipes
  • Formula and preparation method of high-elongation high-temperature-resistant fluororubber for rubber pipes
  • Formula and preparation method of high-elongation high-temperature-resistant fluororubber for rubber pipes

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preparation example Construction

[0053] A preparation method of fluororubber with high elongation and high temperature resistant rubber hose: comprising the following steps:

[0054] Step 1) Weigh the auxiliary agent in the fluororubber premix glue and the formula by weight and number of parts, and the auxiliary agent is magnesium oxide, oxide

[0055] Zinc, calcium hydroxide, carbon nanotubes, release agent, reinforcing agent, mixing the additives evenly; the high elongation high temperature resistant adhesive

[0056] The fluororubber formula of the pipe is made by mixing the raw materials in the following weight percentages:

[0057] Viton premixed rubber: 100 parts;

[0058] Magnesium oxide: 3-10 parts;

[0059] Zinc oxide: 3-10 parts;

[0060] Calcium hydroxide: 3-6 parts;

[0061] Carbon nanotubes: 1-5 parts;

[0062] Release agent: 0.5-2 parts;

[0063] Reinforcing agent: 10-20 parts;

[0064] Step 2) masticating the fluororubber premixed rubber in the internal mixer, then adding uniformly mixed...

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Abstract

The invention discloses a formula and a preparation method of high-elongation high-temperature-resistant fluororubber for rubber pipes. The formula comprises, by weight, 100 parts of premixed fluororubber, 3-10 parts of active magnesium oxide, 3-10 parts of zinc oxide, 3-6 parts of calcium hydroxide, 0-2 parts of WS280, 0-2 parts of carnauba wax, 1-5 parts of carbon nano tubes and 10-20 parts of reinforcing agent, so that optimum material properties that hardness is 75+ / -5, tensile strength is greater than 400%, crescent tear is greater than 30KN / m, and at the high temperature of 250 DEG C, the fluororubber does not crack after being subjected to a model compression experiment for 48 hours according to a compression ratio of 30-50% can be achieved. The preparation method includes the steps of mixing, mixed milling and remilling. The fluororubber prepared by the preparation method is excellent in elongation at break, high-temperature property and tear property, and a low-temperature property of the fluororubber is also improved.

Description

technical field [0001] The invention relates to a fluorine rubber formula for a high-elongation high-temperature-resistant rubber hose and a preparation method thereof, belonging to the field of material engineering and technology. Background technique [0002] Fluorine rubber has excellent heat resistance, oil resistance, chemical medium resistance, weather resistance, electrical insulation performance, radiation resistance and good physical and mechanical properties, and is widely used in aviation, aerospace, automobiles, petroleum, machinery, metallurgy, chemical industry, etc. fields. However, the high temperature requirement is greater than 250 °C, and only peroxide-cured fluororubber can meet it. Due to the limitations of technology and conditions, only expensive imported peroxide fluororubber can be purchased at present. Therefore, on the basis of ensuring excellent physical properties and processing properties, it is very valuable to improve the high temperature re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L91/06C08K13/04C08K7/24C08K3/22C08K3/04B29C35/02
Inventor 陆王兴鞠建宏邹惠芳陶平段旭磊郑兆杰
Owner NANJING ORIENTLEADER TECH CO LTD
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