Polycarbonate, also known as PC resin, is a type of engineering plastic, which is a generic term for plastics that are specially designed for enhanced strength, temperature resistance, and other mechanical properties. Polycarbonate resin is primarily used for industrial applications, such for machine parts and electronic components, where its light weight and superior shock absorption qualities provide a distinct advantage over heavier, more rigid materials. Polycarbonate resin’s high transparency coupled with its sturdiness and non-shatter properties also make it a viable and safe replacement for glass.
manufacturing process is based on the reaction of bisphenol A (BPA or Bis-A) and phosgene in the interfacial polymerization process. Here, disodium saltof BPA dissolved in water reacts with phosgene dissolved in a chlorinated organic solvent such as CH2Cl2 (methylene chloride) resulting PC resin.
Polycarbonate is mainly used for electronic applications that capitalize on its collective safety features. Being a good electrical insulator and having heat-resistant and flame-retardant properties, it is used in various products associated with electrical and telecommunications hardware. It can also serve as a dielectric in high-stability capacitors.
The second largest consumer of polycarbonates is the construction industry, e.g. for domelights, flat or curved glazing, roofing sheets and sound walls. Polycarbonates are used to create materials used in buildings that need to be durable but light.
A major polycarbonate market is the production of compact discs, DVDs, and Blu-ray discs. These discs are produced by injection-molding polycarbonate into a mold cavity that has on one side a metal stamper containing a negative image of the disc data, while the other mold side is a mirrored surface. Typical products of sheet/film production include applications in advertisement (signs, displays, poster protection).