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Method for preparing high wear resistant rubber material for automobiles by extrusion and mixing

A rubber material and mixing technology, which is applied in the field of preparing high wear-resistant rubber materials, can solve the problems of high wear resistance and long-term sealing performance, wear resistance, oil resistance, and stability decline, affecting normal work, etc. , to achieve rich reserves, improve mechanical properties, and improve wear resistance

Inactive Publication Date: 2018-02-02
ZHEJIANG IND POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sealing materials for oil pumps and other positions in automobiles need to work continuously under high temperature and high pressure environments, so the requirements for wear resistance and long-term sealing performance are relatively high. The performance will be degraded and aged in the long-term working process, which will affect its normal work
The current wear-resistant rubber is an important branch of wear-resistant materials. Common wear-resistant rubbers include natural rubber, butadiene rubber, neoprene and styrene-butadiene rubber. However, after long-term use, their wear resistance, oil resistance and The stability will decrease. Based on the above problems, the present invention conducts research and improvement, and provides a method for preparing a rubber material with high wear resistance, oil resistance and chemical reagent resistance for automobiles.

Method used

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  • Method for preparing high wear resistant rubber material for automobiles by extrusion and mixing
  • Method for preparing high wear resistant rubber material for automobiles by extrusion and mixing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. A method for preparing high wear-resistant rubber materials for automobiles through extrusion and mixing, the steps are as follows:

[0031] (1) Take 10g of nano attapulgite powder and add it to 60g of mixed solvent composed of water and ethanol (volume ratio ethanol / water=1:5) and stir evenly. The dispersant is pre-dissolved in the solvent, and it is measured by an ultrasonic pulverizer. The above system is dispersed, the ultrasonic dispersion time is 25min, the ultrasonic power is 120W, the ultrasonic working time is 5s during the ultrasonic process, the interval time is 2s, and the cooling water is used to prevent the temperature from being too high during the ultrasonic dispersion process, and the preparation is uniform Dispersed nano-attapulgite pre-dispersion;

[0032] (2) Put 100g of fluororubber raw rubber, 5g of carbon black, 3g of hydroxy silicone oil, 2g of antioxidant, and 1g of accelerator into the mixer, adjust the appropriate speed, and stir for 5min to obt...

Embodiment 2

[0038] Compared with Example 1, this example is a traditional mechanical blending method. The nano attapulgite is not ultrasonically dispersed, nor is the twin-screw extrusion operation. The components are directly mixed and then vulcanized. ;Specific steps are as follows:

[0039] (1) Prepare 100g of fluorine rubber raw rubber, 5g of carbon black, 3g of hydroxy silicone oil, 2g of anti-aging agent, and 1g of accelerator, and stir well;

[0040] (2) Rubber mixing: Keep the roller temperature of the double-roll mill below 45°C, adjust the roll distance, and put 100g of the fluororubber mixture obtained by mixing uniformly in the above step (1) into the mixer, and Slowly add 2.1g of attapulgite pre-dispersion (same as the content of nano-attapulgite in the 15g pre-dispersion in Example 1) between the two rolls, mixing time 5min, make the rubber raw glue roll, after sticking the roll Continue mixing for 15 minutes to mix the rubber evenly.

[0041] (3) Put the rubber compound obtained...

Embodiment 3-5

[0044] Other processing steps are the same as in Example 1, but in step (2), the fluororubber raw material uses modified natural rubber, chloroprene rubber and nitrile rubber, and other processing parameters are the same. Through comparative tests on different types of rubbers, the improvement of wear resistance when different types of rubbers are used in the technical scheme of the present invention is studied;

[0045] The rubber materials prepared in Examples 1-5 were tested for abrasion resistance. The rubber abrasion resistance test method used was as follows: a circular test specimen of a certain thickness was prepared according to the size of the test instrument for the rubber product, and a grinding wheel was used to fix it. Carry out abrasion test, fix the same pressure and speed of the grinding wheel, and wear the test sample for the same time. After the test is completed, clean the surface of the sample with a brush, and weigh the mass of the sample before and after the...

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Abstract

A method for preparing a high wear resistant rubber material for automobiles by extrusion and mixing is disclosed, nano attapulgite and rubber are compounded, first, the nano attapulgite is pre-dispersed, the high wear resistant rubber material with high oil resistance and chemical resistance is finally prepared by mixing, twin screw extruding, mixing, curing and other steps, and the high wear resistant rubber material can be widely used in automotive sealing materials.

Description

Technical field [0001] The invention relates to a method for preparing a high wear-resistant rubber material for automobiles through extrusion and mixing, in particular to the preparation of a high wear-resistant rubber material by compounding rubber and nano attapulgite. Background technique [0002] Sealing materials at positions such as oil pumps in automobiles need to work continuously in a high-temperature and high-pressure environment, so their wear resistance and long-term sealing performance are relatively high. The rubber materials in the prior art have oil resistance and high temperature resistance in this environment. Performance will degrade and age during long-term work, which will affect its normal operation. The current wear-resistant rubber is an important branch of wear-resistant materials. Common wear-resistant rubbers include natural rubber, butadiene rubber, neoprene and styrene-butadiene rubber. However, after long-term use, its wear resistance, oil resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L83/06C08K9/00C08K7/10C08K3/04B29B7/00
CPCB29B7/005C08K2201/011C08L27/12C08L2201/08C08L83/06C08K9/00C08K7/10C08K3/04
Inventor 宋汉超薛晓艳夏泽雨刘凯
Owner ZHEJIANG IND POLYTECHNIC COLLEGE
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