Wear of rubber products is a common phenomenon of destruction, it is a friction caused by the phenomenon of micro-off the rubber surface, The good or bad wear and tear properties of rubber products to a large extent determine the product life.Tires, conveyor belts, rubber shoes, hoses and many other products use life directly related wear resistance, and thus wear resistance is an important technical indicators of rubber performance.
In order to test the performance of rubber wear, there has designed the Akron, Lambert abrasion testing machine, Schopper abrasion test machine, Pico abrasion and other models of abrasion testing machine, generally under the stipulate conditions of test with the friction contact surface, Use the weight or volume of rubber particles express test result , In China's current rubber products technical standards, wear resistance is mostly based on Akron abrasion test machine .
Test principle: the sample and the grinding wheel at a certain tilt angle and a certain load under the action of friction, test the sample stroke 1.6lkm mileage wear volume.
In many rubber products test, abrasion test is an indispensable test. For many rubber products, wear performance is directly related to its service life, has big practical significance, it is one of the important technical indicators. So abrasion performance testing is a very important issue in rubber industry . Over the years in China testing the performance of rubber wear test equipment used the Akron abrasion test machine and the Grazi abrasion testing machine, the two abrasion test machine are able to test the rubber abrasion performance, but the test cycle is too long and test path repetition and other deficiencies. Rotary roller abrasion machine compared with the commonly used Akron abrasion test machine and Glaxi abrasion test machine , it has the advantage of small sample, short test cycle and no repeat friction path, etc., it is the more popular international common abrasion test machine.
Test principle: under the specified contact pressure and area, the test sample be friction in a certain level of sand generated the amount of abrasion. The abrasive cloth is attached to the surface of the rotary roll, and the sample is pressed against a roller with an abrasive cloth to move the specimen laterally along the roll. Wear is produced at one end of the cylindrical specimen, measuring the mass loss of the sample, and calculating the volume of wear from the density of the sample. The test results are expressed in terms of volume wear or wear index relative to a standard index.
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