Why does PVC plastic sheets appear bleaching phenomenon?
  2022/02/10| View:1896

If the PVC plastic sheets produced by the PVC plastic sheets manufacturer is pre-soaked in water, or outdoor exposure, or by bending, stretching, etc., it will cause white atomization and lose light transmission. The following PVC plastic sheets manufacturers will analyze the white atomization phenomenon of PVC thickener, exposure white atomization phenomenon and ground stress white atomization phenomenon.


1, Soaking white atomization phenomenon: a variety of transparent PVC plastic sheet products in contact with water or steam for a long time, showing a white fog turbid appearance. Soft products are more powerful than hard products. In this case, even if soaked in water, the thickener cannot be restored to its original state, and only by increasing the temperature can the solubility of the thickener be repaired to make it completely transparent.


transparent PVC plastic sheet products


2, White atomization phenomenon: When PVC plastic sheets products are exposed outdoors, white atomization phenomenon will also occur. This is related to the solubility of thickeners used by PVC plastic sheets manufacturers. In metal soap polyvinyl chloride thickener benzoates soluble in polyvinyl chloride have less atomizing effect than polyether salts.


3, Ground stress white atomization phenomenon: ground stress white atomization phenomenon refers to the hard PVC plastic sheets products under the action of external mechanical equipment, such as bending, stretching, PVC plastic sheets products such as bending, folding, stretching part of the white atomization phenomenon. This may be due to the change of molecular formula caused by external forces, the molecular structure chain of the polymer causes the trend, so that the relative density of PVC changes, and there are gaps between some molecular structures, producing light transmittance, so that PVC products appear milky white.

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