Polycarbonate materials give you a unique balance of helpful features including temp resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering plastic materials.
Polycarbonate is a very high quality material. Though it offers considerable impact-resistance, it possesses lower scratch-resistance and so a hard coating can be applied to polycarbonate eyewear lenses and polycarbonate exterior auto components. The characteristics associated with polycarbonate are along the lines of those of Acrylic PMMA materials, yet , polycarbonate is 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 carries a glass transition temperature of around 150 °C (302 °F), so it softens gradually above this point and flows above about 300°C (572 °F). Tools ought to be held at warm to high temperatures, generally above 80 °C (176 °F) to help make strain- and stress-free products.
Unlike most thermoplastics, polycarbonate can undergo massive deformations without cracking. Hence, it could be processed and formed at room temperature using standard sheet metal techniques, for instance forming bends with a brake. For even sharp angle bends with a tight radius, no heating is generally necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are important, which should not be made from sheet metal. Note that PMMA/Plexiglas, which happens to be similar in appearance to polycarbonate, but it is brittle and cannot be bent without heating.
Polycarbonate is commonly found in eye protection, and also in other projectile-resistant see through applications that would normally be thought of as requiring the use of glass, but require much higher impact-resistance. Several types of lenses are created from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety goggles for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are typically made from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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