Method for detecting wearing property of vulcanized rubber under damp and hot conditions

Abstract

The invention provides a method for detecting the wearing property of vulcanized rubber under damp and hot conditions. The method comprises the following steps: (1) confirming the weight of a test sample which is not worn; (2) enabling the test sample to contact a grinding wheel under pressure; (3) enabling the test sample and the grinding wheel to slide in an angle of 90 degrees and at a relative speed of 0.2-5.0m / s; (4) confirming the weight of the worn test sample; and (5) confirming the wear loss according to the weight variation of the test sample before and after wearing, wherein the steps (2) and (3) are implemented in a sealed space, steam fills the sealed space in the wearing period, the temperature of the steam is 125-175 DEG C, and the pressure of the steam is 0.3-0.65MPa. By adopting the method, the damp and hot wearing property of rubber can be relatively really detected, and moreover, steam or hot water splashing can be avoided.

Description

technical field [0001] The invention relates to the field of rubber performance detection, more specifically, to a detection method of rubber abrasion performance under hot and humid conditions. Background technique [0002] In the current rubber industry, although there are national standards (GB / T 1689-2014) for the testing of rubber wear properties, these tests are all carried out in dry air at room temperature, and there is no water or high-temperature steam on the rubber. According to the tests carried out, although the wear amount of the rubber in the general test has reached the index requirements, the test results are greatly different from the actual use effects due to changes in the actual use environment conditions, which cannot truly reflect the use conditions and meet the service life requirements. [0003] For this reason, in the prior art, a kind of wet-heat abrasion testing machine is disclosed (referring to, Chinese Patent Authorization No. CN203519448U), sp...

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Problems solved by technology

[0002] In the current rubber industry, although there are national standards (GB / T 1689-2014) for the testing of rubber wear properties, these tests are all carried out in dry air at room temperature, and there is no water or high-temperature steam on the rubber. The testing carried out resulted in that although the wear amount of the rubber in the general testing has reached the index requirements, the test results are greatly different from the actual use effects due to changes in the actual use environment conditions, which cannot truly reflect the use conditions and meet the service life requirements.

[0003] For this reason, in the prior art, a kind of wet-heat abrasion testing machine is disclosed (referring to, Chinese Patent Authorization No. CN203519448U), specifically discloses a kind of testing machine with specific structure, but this patent does not disclose to detect rubber in hot and humid condition Therefore, there is a problem that the test conditions are not uniform, and the data obtained by the test are not comparable.

In addition, the water vapor of the testing machine in this patent is directly ejected from the nozzle to the grinding wheel under high pressure, causing water vapor or high-temperature water to be ejected to the surroundings, posing a huge safety hazard

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