The toxic of PVC and substitutability of PVC
PVC，as one of the largest generic plastic worldwide, pvc’s application accounting for 80% in ou life.While, things often have two sides. PVC can also do harm to the environment and us people if use it inappropriately. PVC is a plastic that we always use in daily life, It is a resin composed of PVC resin, plasticizer and antioxidant, and it is non-toxic. However, the plasticizers, antioxidants and other major auxiliary materials are toxic. dibutyl terephthalate, dioctyl phthalate are mainly used in daily PVC plastic as additive, These chemicals are toxic, and the antioxidant lead stearate of PVC is also toxic. In addition, PVC plastic products will slowly decompose into hydrogen chloride gas at a high temperature, for example,under the circumstance of about 50 ℃, which is harmful to human health. Therefore, PVC products should not be used as food packaging.
There are also some new areas that PVC can be used to play a role:
1. PVC replaces steel material
By research on the modification technology of PVC , and using advanced internal plasticizing process and additive formula abroad to ensure the mechanical and electrical properties of PVC plastic steel, improve the flame retardancy, and make the product have the advantages of high strength, corrosion resistance, flame retardancy, good insulation, light weight, and convenient construction. It can completely replace steel pipes in the electrical wiring system.
2. PVC replaces wood material
PVC wood plastic composite is a new type of composite material, which is made of waste wood fiber and plastic as main raw materials, supplemented by appropriate processing aids, through hot pressing preparation process. Its products fully reflect the recycling concept of renewable resources and petroleum products, which is of great significance to alleviate the current shortage of wood and petroleum resources, serious environmental pollution and other problems. Experts in the industry pointed out that the PVC building materials, which use plastic instead of wood, not only save costs, but also can be recycled, which is in line with the general trend of environmental sustainable development and circular economy.
Above, introduced about the toxic of PVC, substitutability of PVC. Do you know more about PVC? Leave us message!
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