1. Fire retarding properties
PVC has inherently superior fire retarding properties due to its chlorine content, even in the absence of fire retardants.
2. Durability
Under normal conditions of use, the factor most strongly influencing the durability of a material is resistant to oxidation by atmospheric oxygen. PVC, having the molecular structure where the chlorine atom is bound to every other carbon chain, is highly resistant to oxidative reactions, and maintains its performance for a long time.
3. Oil/Chemical resistance
PVC is resistant to acid, alkali, and almost all inorganic chemicals. Although PVC swells or dissolves in aromatic hydrocarbons, ketones, and cyclic ethers, PVC is hard to dissolve in other organic solvents.
4. Mechanical stability
PVC is a chemically stable material, which shows little change in molecular structure, and also exhibits little change in its mechanical strength.
5. Processability and mouldability
The processability of a thermoplastic material depends largely on its melt viscosity. PVC insulated Materials are not suitable for injection molding of large-sized products, since their melt viscosity is comparatively high. On the other hand, the viscoelastic behavior of molten PVC is less dependent on temperature and is stable.
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