Oil-resistant high-temperature compression fatigue-resistant chloroprene rubber composition

A technology of neoprene and composition, applied to springs made of plastic materials, mechanical equipment, low internal friction springs, etc., can solve the problems of natural rubber such as narrow high temperature resistance range, poor oil resistance, and limited shock absorber applications , to achieve the effects of easy procurement, excellent fatigue resistance and convenient operation

Inactive Publication Date: 2012-01-18
SHANGHAI ZHONGLI AUTO PARTS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, natural rubber has a narrow range of high temperature resistance and poor oil resistance, which limits its application in the shock absorber industry

Method used

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  • Oil-resistant high-temperature compression fatigue-resistant chloroprene rubber composition
  • Oil-resistant high-temperature compression fatigue-resistant chloroprene rubber composition

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Experimental program
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Effect test

Embodiment 1～5

[0023] A neoprene rubber composition composed of the raw materials listed in the following table:

[0024]

[0025] The preparation method of the above-mentioned chloroprene rubber composition made into the shock-absorbing material used on the shock absorber of the automobile engine is: putting the chloroprene rubber and the acrylic rubber into an internal mixer at the same time, adding 2-mercaptobenzimidazole, two Nickel butyl dithiocarbamate, carbodiimide, microcrystalline wax 1900, activated zinc oxide, stearic acid, carbon black N-550, nano silicate filler, plasticizer DOS, open the internal mixer to mix Mix for 5 minutes, and ensure the temperature is below 65 degrees. Put the mixed rubber on a 6-inch open mill and make two triangle bags, then put it in the cold machine of the internal mixer, add sulfur, magnesium oxide, NA Keep the temperature of -22 and TBTD above 45 degrees and below 65 degrees. The mixing time is 3 minutes, and then take the two thin-thin triangle ...

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Abstract

The invention provides an oil-resistant high-temperature compression fatigue-resistant chloroprene rubber composition, which is characterized in that the composition comprises: 85-95 parts by weight of chloroprene rubber, 5-15 parts by weight of acrylate rubber, 1-3 parts by weight of benzimidazole antioxidants, 1-3 parts by weight of nickel dibutyl dithiocarbamate, 1-3 parts by weight of carbodiimide, 1-3 parts by weight of paraffin, 5-8 parts by weight of activated zinc oxide, 0.5-5 parts by weight of stearic acid, 62-92 parts by weight of reinforcing agents, 10 parts by weight of plasticizers, 0.5-5 parts by weight of vulcanizers, and 3-6 parts by weight of auxiliary crosslinking agents. The invention has good oil resistance, and good high-temperature compression fatigue resistance, has excellent thermal oxidative aging protection effect and fatigue protection effect.

Description

Technical field [0001] The invention relates to a chloroprene rubber composition with oil resistance and high temperature compression fatigue resistance, which is used in shock absorbers of automobile engines. Background technique [0002] In order to reduce the vibration and noise of the car, people have adopted various measures, including the use of various shock-absorbing materials, and the most widely used is rubber. Rubber has good viscoelasticity and damping characteristics. When deformed by an external force, part of the energy is stored in the form of potential energy, and the other part of the energy is converted into heat and dissipated, so that it can be used in a wider frequency band. Random vibration can effectively reduce the resonance amplitude, which cannot be replaced by ordinary materials. The high elasticity, high strength and high fatigue durability of natural rubber make it widely used in the shock absorption industry. However, natural rubber has a narrow r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L33/04C08K13/02C08K5/37C08K5/39C08K5/29C08K3/22C08K5/09C08K3/04C08K3/34C08K5/11C08K3/06C08K5/405C08K5/40F16F1/36
Inventor 林然
Owner SHANGHAI ZHONGLI AUTO PARTS
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