Chlorinated polyvinyl chloride, or CPVC, is a thermoplastic which is produced by the post-chlorination of polyvinyl chloride (PVC) resin. CPVC typically contains 65-67% chlorine, compared to 55-57% for standard PVC. Its importance as an engineering thermoplastic is due to its relatively high glass transition temperature, high heat distortion temperature and chemical inertness; it also has outstanding mechanical, dielectric, and flame and smoke properties.
Lubrizol’s history with the production of CPVC dates back to 1959 and in the subsequent decades it has pioneered the processing of the material. Lubrizol offers TempRite® Engineered Materials CPVC as resin, injection molding compounds and extrusion molding compounds.
Many CPVC compounds conform to potable water regulations. It is compliant with most international standards and is approved by international agencies including NSF International. It also has excellent resistance to the formation of biofilms. Products made from or including CPVC offer outstanding heat resistance, flame and smoke performance, and weatherability. CPVC can be both downcycled and recycled, and many local recycling protocols allow for CPVC to be integrated into recovery and recycling systems intended for PVC.
TempRite Engineered Materials CPVC can be used as a single compound, but is also designed to have high compatibility with PVC and is easy to blend into existing PVC formulations. It can be used in a variety of processing techniques including, but not limited to, injection and compression molding, and profile and sheet extrusion. TempRite Engineered Materials can also be used in adhesive formulations, where they can improve performance in various industry sectors and end-uses. As a foam-based material, the product can be used to manufacture cores for Aluminium Composite Material (ACM) panels, where it offers excellent fire-resistance properties compared with traditional thermoplastics.