What is the difference between polycarbonate and PMMA?
What is Polycarbonate?
(PC) are a group of thermoplastic polymers containing carbonate groups in their
chemical structures. Polycarbonates used in engineering are strong, tough
materials, and some grades are optically transparent. They easily work, molded,
Polycarbonate is a
durable material. Although it has high impact-resistance, it has low
scratch-resistance. Therefore, a hard coating is applied to polycarbonate
eyewear lenses and polycarbonate exterior automotive components. The
characteristics of polycarbonate compare to those of polymethyl methacrylate
(PMMA, acrylic), but polycarbonate is stronger and will hold up longer to
extreme temperature. Polycarbonate is highly transparent to visible light, with
better light transmission than many kinds of glass. Transmits up to 90% visible
What is PMMA?
methacrylate) (PMMA), also known as acrylic, acrylic glass, or plexiglass as
well as by the trade names Crylux, Plexiglas, Acrylite, Lucite, and Perspex
among several others, is a transparent thermoplastic often used in sheet form
as a lightweight or shatter-resistant alternative to glass. It’s an important
PMMA is a strong,
tough, and lightweight material. It also has good impact strength, higher than
both glass and polystyrene; however, PMMA's impact strength is still
significantly lower than polycarbonate and some engineered polymers. But it has
low surface hardness and easy scratching, and absorbing water is easy to swell.