Composite rubber for ignition motor and preparation method thereof

A compound rubber and engine technology, applied in the rubber field, can solve the problems of long preparation time, uneven performance of rubber products, uneven mixing, etc., and achieve the effects of reducing the risk of raw material aging, high promotion and application value, and increasing preparation efficiency.

Inactive Publication Date: 2018-06-22
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the addition of a large amount of additives and fillers during the preparation process, the sticky roll phenomenon occurs during the preparation process, and the sticky roll further leads to uneven mixing and uneven performance of rubber products. In addition, the preparation process requires multiple Cleaning the sticky rollers will lead to a long preparation time, and the extension of the mixing time will further cause the aging of the rubber raw materials, increasing the risk of the strength and performance of the prepared rubber products decreasing
However, if the addition of fillers is greatly reduced, although the sticking phenomenon will be reduced, the performance of the rubber will be reduced, which does not meet the requirements of rubber for ignition engines, such as high temperature resistance and high strength.

Method used

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Experimental program
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preparation example Construction

[0014] The present invention provides a method for preparing composite rubber for ignition engines. The method includes the following steps: (1) mixing ceramic fibers with a silane coupling agent to obtain a pretreatment enhancer; (2) combining polyvinyl acetate, The first solvent, fluororubber, carbon black, pretreatment enhancer, zinc oxide, molybdenum-based catalyst and anti-aging agent are subjected to a banbury, and then stand; (3) Add the second solvent to the primary banbury after standing; The white carbon black and the vulcanizing agent are subjected to secondary banburying; (4) The total amount of solvent formed by the first solvent and the second solvent is used as 100%, and the secondary banburying material is flashed to remove 70-90% of the solvent (5) The flash-vaporized secondary banbury material is rolled and cut to make a film, which is extruded into molding and microwave vulcanized; among them, the white carbon black has a particle size range of 200 mesh to 400...

preparation example 1

[0041] The ceramic fiber and the silane coupling agent were mixed for 50 minutes at 180°C and the rotation speed was 800 rpm. The weight ratio of the ceramic fiber to the silane coupling agent was 1:1, and the silane coupling agent was a mixture of KH550 and KH570. The weight ratio of KH550 and KH570 is 1:2 to obtain a pretreatment enhancer.

preparation example 2

[0043] The ceramic fiber and the silane coupling agent were mixed for 30 minutes at a speed of 500 rpm at 120°C. The weight ratio of the ceramic fiber to the silane coupling agent was 1:3, and the silane coupling agent was a mixture of KH550 and KH570. The weight ratio of KH550 and KH570 is 1:3, and the pretreatment enhancer is obtained

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PUM

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Abstract

The invention relates to rubber for cables, and particularly discloses composite rubber for an ignition motor and a preparation method thereof. According to the preparation method disclosed by the invention, the phenomenon of roller adhesion in a mixing technological process can be reduced, the actual operation time is reduced, and the risk of aging of raw materials can be reduced based on improvement of preparation efficiency; the obtained composite rubber for the ignition motor has the advantages of high temperature resistance and high strength. The preparation method of the composite rubberdisclosed by the invention is strong in operability, has an obvious effect, and has a high popularization and application value.

Description

Technical field [0001] The invention relates to rubber, in particular to a composite rubber for ignition engines and a preparation method thereof. Background technique [0002] With the development of science and technology, the improvement of engine performance, the increase of local temperature of the fuselage, and the strengthening of vibration intensity, the high temperature resistance of the cable sealing sheath is becoming higher and higher. [0003] The existing cable sealing sheaths not only cannot meet the increasingly stringent electrical safety requirements in electrical performance, but also have poor bonding strength with metal sleeves, easy to age, blistering and delamination, loss of elasticity, and even separation from metal sleeves. , It will cause a fire accident in severe cases, which cannot meet the requirements of long-term safe and effective continuous work. The short service life, poor electrical performance, and poor high temperature resistance of the ignit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L31/04C08K13/06C08K9/06C08K7/04C08K3/04C08K3/22C08K3/36B29D7/01
CPCC08L27/12B29D7/01C08K2003/2296C08L2201/08C08L31/04C08K13/06C08K9/06C08K7/04C08K3/04C08K3/22C08K3/36
Inventor 佘晨何想想潘晓青周余
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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