Pe water supply pipe why will appear the phenomenon of whitening?

2024-01-29

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  pe water supply pipeIt is a very common pipe in home improvement. When decorating our house, water pipes and drains are undoubtedly very important to us. However, the pe water supply pipe will show a certain degree of whitening after exposure or bending and stretching. What is the problem? PE water supply pipe staff in this brief introduction:

1, water immersion albino. When exposed to water or steam for a long time, many types of transparent PVC products take on a white, foggy appearance. Soft products are more ferocious than hard products. In this case, even if the penetrating water disappears, the stabilizer cannot recover its original shape. As long as the temperature is increased, the compatibility of the stabilizer can be restored to transparency.

2, exposure to albinism. PVC products also exhibit a whitening effect when exposed outdoors. Organotin stabilizers are not easy to whiten, sulfur-containing organotin is better, followed by laurate and maleate. The addition of light stabilizers, phosphites, liquid composite stabilizers, etc., can avoid or reduce the whitening of PVC due to whitening to a certain extent.

3. Stress whitening. Stress whitening means that some parts of PVC products (such as bending creases and stretching parts) will turn white under the action of mechanical external forces (such as bending and stretching). This may be due to external forces, the orientation of polymer molecular chains, changes in PVC density, and the presence of vacancies between certain molecules. This constitutes light scattering and makes the PVC product appear white.