Chemical and Physical Properties of PVC Rigid PVC is one of the most widely used plastic materials. PVC material is an amorphous material. Additives such as stabilizers, lubricants, auxiliary processing AIDS, pigments and reinforcing agents are often added to PVC materials in practical use [2]? .
PVC material is nonflammable, with high strength, good weather resistance and excellent geometric stability. PVC has strong resistance to oxidants, reductants and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid, and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
Extended data:
PVC material itself is non-toxic. If it is not a completely polymerized monomer or degradation product, it will contain certain toxicity. Under high temperature and ultraviolet radiation, PVC will degrade. At this time, if people reuse the degraded PVC plastic products, it will easily damage the internal system of the human body, thus causing hepatic angiosarcoma.
PVC plastics include urea-formaldehyde resin and paraformaldehyde. If we process and manufacture PVC plastics, their incomplete reaction will lead to a large amount of free formaldehyde in PVC plastics, which is a protoplasm poison of cells.
If the bowl made of PVC is filled with hot food, it will easily lead to the deterioration of some cells after eating, which is not good for human health. In addition, PVC plastics contain chlorine, which will produce a toxic substance and pollute the environment when we burn it.
The essence of PVC is a kind of vacuum plastic film, which is used for surface packaging of various panels, so it is also called decorative film and adhesive film, and is used in building materials, packaging, medicine and other industries. Among them, the building materials industry accounts for a large proportion, accounting for 60%, followed by the packaging industry and several other small-scale application industries.
References:
Baidu encyclopedia -PVC plastic