Lexan Polycarbonate Sheets are clear and tough
Polycarbonate materials give you a balance of beneficial features including high temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastic materials.
Polycarbonate is a very rugged material. Although it features outstanding impact-resistance, it possesses reduced scratch-resistance and so a hard coating can be applied to polycarbonate eyeglasses and polycarbonate exterior auto components. The characteristics relating to polycarbonate are generally similar to that of those of polymethyl methacrylate (PMMA, acrylic), except polycarbonate is going to be 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 it has better light transmission characteristics than many kinds of glass.
Polycarbonate carries a glass transition temperature near 150 °C (302 °F), in order that it softens slowly above this point and flows above about 300°C (572 °F). Tools will have to be held at warm to high temperatures, generally above 80 °C (176 °F) to produce strain- and stress-free products.
Unlike many thermoplastics, polycarbonate can undergo dramatic changes in basic shape without cracking. Because of that, it is sometimes processed and formed at room temperature using sheet metal techniques, which include forming bends on a brake. For even 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 required, which may not be produced from sheet metal. Understand that PMMA/Plexiglas, that is similar in appearance to polycarbonate, but is brittle and can't be bent without heating.
Polycarbonate is commonly used in eye protection, and also in other projectile-resistant viewing and lighting applications that would normally be thought of as requiring the use of glass, but require much greater 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 glasses for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are typically made out of polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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