Bayer Makrolon Polycarbonate materials offer a balance of beneficial features this includes temp resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastic materials.
Polycarbonate is a very high quality material. Even though it offers high impact-resistance, it possesses minimal scratch-resistance and so a hard coating can be applied to polycarbonate eye protection and polycarbonate exterior automotive components. The characteristics relating to polycarbonate tend to be similar to those of common Acrylic materials, but polycarbonate is always 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 several types of glass.
Polycarbonate has a glass transition temperature near 150 °C (302 °F), consequently it softens slowly above this point and flows above about 300°C (572 °F). Tools are required to be held at warm to high temperatures, generally above 80 °C (176 °F) in order to make strain- and almost stress free products.
Unlike almost all other thermoplastics, polycarbonate can undergo large shape changes without cracking or breaking. Therefore, it is sometimes processed and formed cold using sheet metal techniques, for example forming bends on a brake. Even for sharp angle bends having a tight radius, no heating is usually necessary. This makes it useful for prototyping applications where transparent or electrically non-conductive parts are necessary, which can't be produced from sheet metal. Be aware that PMMA/Plexiglas, which happens to be similar in looks to polycarbonate, but it is brittle and cannot be bent without heating.
Polycarbonate is often used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally require the use of glass, but require much greater impact-resistance. Several types of lenses are produced from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety visors 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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