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Why do some plastic products mold?
Sometimes we will find that some plastic products are moldy, and everyone does not know what caused it. In fact, most pure polymer compounds are anti-fungal and will not be decomposed or digested by microbial enzymes, but some additives in plastics will affect the mildew resistance of the products, such as ordinary oil in PVC plastics. Plasticizers, fabric bases for artificial leather, and intrinsic fillers for phenolic plastics, etc., all become microbial sources of nutrients. For these mildew-prone plastic products, such as in the hot and humid environment where the mold is easily propagated, it is possible to take anti-mold measures, that is, adding an anti-fungal agent such as salicylanilide to the product formulation, and controlling the reproduction of the mold.
In addition, since the necessary conditions for mold growth and reproduction are nutrients and moisture, it is also possible to prevent mildew by increasing the dryness of the storage environment of the plastic product. Termites and mice have the inferiority of foraging and biting plastic products. The most common is that mice bite a paraffin-like polyethylene product.
In addition to technically adding a repellent to the formulation, it is mainly to prevent mold or rodent damage to plastic products by killing insects and improving the storage environment to prevent mold.