The third reason for the fading of polycarbonate tube

Last time we talked about the two reasons for PC discoloration, the following is the third reason for the conventional discoloration of products:

Antioxidant

Some organic pigments undergo macromolecular degradation or other changes after oxidation and gradually fade. The first process is high-temperature oxidation during processing, and the second is oxidation that occurs when encountering a strong oxidant (such as chromate in chrome yellow). After mixing lakes, azo pigments and chrome yellow, the red color will gradually fade.

Acid and alkali resistance

The fading of colored plastic products is related to the chemical resistance (acid and alkali resistance, redox resistance) of the colorant. For example, molybdenum chrome red is resistant to dilute acid, but is sensitive to alkali, and cadmium yellow is not acid resistant. These two pigments and phenolic resin have a strong reducing effect on some colorants, which seriously affect the heat resistance and weather resistance of the colorant and cause fading.

According to the analysis of the above points and the production experience of our JE company for many years, we are more targeted in the selection of raw materials. For many years, we have used brand-new anti-UV, good weather resistance, high temperature resistance, and high light transmittance. Imported PC raw materials. Therefore, the PC lampshade products we produce have high light transmission, yellowing resistance and good stability.

JE is a factory specializing in the production of polycarbonate tube, for more details, please refer to:

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