Bayer Makrolon Polycarbonate products have a great blend of useful features including temp resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering materials.
Polycarbonate is a very high quality material. Even though it offers high impact-resistance, it possesses low scratch-resistance and thus a hard coating could be applied to polycarbonate eyewear as well as polycarbonate exterior motor vehicle equipment. The characteristics relating to polycarbonate are generally similar to that of those of common Acrylic materials, and yet 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 many different types of glass.
Polycarbonate carries a glass transition temperature near 150 °C (302 °F), therefore it softens gradually above this point and flows above about 300°C (572 °F). Tools need to be held at warm to high temperatures, generally above 80 °C (176 °F) in order to make strain- and reduced stress products.
Unlike many thermoplastics, polycarbonate can undergo massive changes in basic shape without cracking or breaking. For that reason, it can be processed and formed  cold using sheet metal techniques, such as forming bends on a brake. Even for sharp angle bends with a tight radius, no heating is usually necessary. This makes it useful for prototyping applications where transparent or electrically non-conductive parts are required, which can not be produced from sheet metal. Understand that PMMA/Plexiglas, which is similar in looks to polycarbonate, but is brittle and can't be bent without heating.
Polycarbonate is commonly utilized in eye protection, and also in other projectile-resistant optical type applications that would normally indicate the use of glass, but require much higher impact-resistance. Several types of lenses are made of 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 fabricated from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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