Some friends have encountered such a situation. I don`t know why. The color of this game bag has faded after being used for a long time. I thought it was a material that would not fade, but now it has faded. Let`s take a look at the cause What is the reason for the fading of Eva Bag? Factors affecting the fading of plastic EVA products. The fading of plastic colored products is related to the light resistance, oxidation resistance, heat resistance, acid and alkali resistance of pigments and dyes, and the characteristics of the resin used. According to the processing conditions and use requirements of plastic products, it can be selected after comprehensive evaluation of the above-mentioned properties of the required pigments, dyes, surfactants, dispersants, carrier resins and anti-aging additives during the production of masterbatches.
Fascia Gun Eva Bag 1. The fading of acid and alkali resistant colored plastic products is related to the chemical resistance of the colorant (acid and alkali resistance, redox resistance). 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. 2. Oxidation resistance Some organic pigments gradually fade after oxidation due to degradation of macromolecules or other changes. 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. 3. The thermal stability of heat-resistant pigments refers to the degree of thermal weight loss, discoloration and fading of pigments at the processing temperature. The components of inorganic pigments are metal oxides and salts, which have good thermal stability and high heat resistance. The pigments of organic compounds will undergo changes in molecular structure and a small amount of decomposition at a certain temperature. Especially for PP, PA and PET products, the processing temperature is above 280°C. When selecting colorants, we must pay attention to the heat resistance of the pigment on the one hand, and consider the heat resistance time of the pigment on the other hand. Usually, the heat resistance time is required to be 4-10rain. . We also have Eva Game Pad Package on sale, please contact us if you are interested.
