Method of detecting aging degree of anti-pollution flashover coating of room temperature vulcanized silicone rubber

Abstract

The invention discloses a method of detecting aging degree of an anti-pollution flashover coating of room temperature vulcanized silicone rubber. The method comprises the following steps of sampling to obtain a sample wafer; testing one surface, exposed to the air, of the sample wafer by adopting an attenuated total reflection fourier infrared spectrometry to obtain an infrared spectrogram; and judging the aging degree of the coating according to the ratio of a peak value of a 1008cm-1 absorption peak and a peak value of a 786cm-1 absorption peak and a peak value of a 1008cm-1 absorption peak through the infrared spectrogram. The detection method provided by the invention can carry out ration judgment on the anti-pollution flashover coating of the room temperature vulcanized silicone rubber through a few of sample wafers, the specific sampling is not needed, the method is simple and practical, the analytical precision and accuracy are high, and the reproducibility is good.

Description

technical field [0001] The invention relates to the field of detection of aging of antifouling flashover coatings, in particular to a detection method for the aging degree of room temperature vulcanized silicone rubber antifouling flashover coatings. Background technique [0002] Silicone rubber material is an organic polymer material, which is commonly used as an insulating material in power systems. It is widely used in composite insulators, anti-pollution flashover coatings, cable terminal accessories, etc. In long-term operation, it is susceptible to aging due to the effects of electric field, light, humidity and other factors. Once the aging phenomenon occurs, the electrical and mechanical properties of the insulating device will be significantly reduced, which will affect the normal operation of the power grid. Therefore, accurate characterization of the aging degree of silicone rubber materials can help operators to discover aging insulating parts in time, so that th...

AI Technical Summary

Problems solved by technology

Commonly used detection methods include: water spray classification test, adhesion test and color change degree observation, etc., but these detection methods have the advantages of simple method and easy on-site operation compared with these methods, but the disadvantage is that the measurement is not easy to quantify and easy to be affected by the on-site Effect of light and humidity conditions

The test of hydrophobicity and color observation is greatly affected by the subjective factors of the tester, and the measurement results will be different when the weather conditions are different; the test of adhesion is difficult to operate on the surface of the insulator, and the measurement results cannot directly reflect silicon. Aging degree of rubber antifouling flashover coating itself

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