What is the difference between CPVC and PVC?

What is the difference between CPVC and PVC?

In PVC, a chlorine atom occupies 25% of the bonding sites on the carbon backbone, and the remaining sites are filled by hydrogen.

Solvent Method CPVC Resin differs from PVC in that approximately 40% of the bonding sites on the backbone are filled with chlorine atoms. The chlorine atoms surrounding the carbon backbone of Solvent Method CPVC Resin are large atoms that protect the chain from attack.

The chlorine content of Solvent Method CPVC Resin can be increased from 56.7% to as high as 65%.

  • Improved heat resistance temperature:the maximum use temperature of CPVC products can reach 110℃, which is 30~40℃ higher than PVC;
  • Improve the chemical stability:improve the chemical resistance and corrosion resistance of PVC, can resist acid, alkali, salt, fatty acid salt, oxidant, halogen and other chemical corrosion;
  • Increased rigidity:the tensile strength and bending strength of CPVC are greatly improved than that of PVC;
  • It improves the weather resistance and flame retardancy, and reduces the combustion smoke density.
  • The solubility of the resin is improved, and it can be used in the production of adhesives, coatings and paintsetc.

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