Sheffield Plastics Polycarbonate Flat Sheet are clear and tough
Bayer Makrolon Polycarbonate materials offer a balance of beneficial features this includes temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering materials.
Polycarbonate is a very tough material. Although it features considerable impact-resistance, it's got reduced scratch-resistance and thus a hard coating may be applied to polycarbonate eye wear and polycarbonate exterior vehicle components. The properties relating to polycarbonate tend to be similar those of common Acrylic materials, although polycarbonate is actually stronger, it is usable in a wider temperature range and is a bit more expensive. This plastic polymer is highly transparent to visible light and has better light transmission characteristics than many kinds of glass.
Polycarbonate carries a glass transition temperature of about 150 °C (302 °F), consequently it softens gradually above this point and flows above about 300°C (572 °F). Tools should be held at high temperatures, generally above 80 °C (176 °F) to help with making strain- and almost stress free products.
Unlike most thermoplastics, polycarbonate can undergo large shape changes without cracking or breaking. Because of that, it is sometimes processed and formed at room temperature using standard sheet metal techniques, such as forming bends with a brake. Even for sharp angle bends having a tight radius, no heating is generally necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are needed, which may not be made from sheet metal. Note that PMMA/Plexiglas, which is similar in looks to polycarbonate, but is brittle and cannot be bent with out a heating process.
Polycarbonate is often found in eye protection, and also in other projectile-resistant viewing and lighting applications that would normally require the use of glass, but require greater impact-resistance. Many different types of lenses are produced from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety glasses for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are commonly constructed from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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