Polycarbonate materials offer a unique balance of helpful features this includes temp resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering plastic materials.
Polycarbonate is definitely a durable material. Although it offers outstanding impact-resistance, it has minimal scratch-resistance and thus a hard coating could be applied to polycarbonate eyewear and polycarbonate exterior auto equipment. The properties relating to polycarbonate are generally similar to those of Acrylic PMMA materials, except 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 several types 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 ought to be held at higher temperatures, generally above 80 °C (176 °F) to produce strain- and almost stress free products.
Unlike many thermoplastics, polycarbonate can undergo massive deformations without cracking. Subsequently, for small changes in shape, it can be processed and formed without needing to be heated using sheet metal techniques, which include forming bends with a brake. Even for sharp angle bends with a tight radius, no heating is usually necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are required, which may not be created from sheet metal. Remember that PMMA/Plexiglas, that is certainly similar in appearance to polycarbonate, but it's brittle and can't be bent at room temperature.
Polycarbonate is frequently utilized in eye protection, as well as in other projectile-resistant see through or lighting applications that would normally indicate the use of glass, but require higher impact-resistance. Many kinds of lenses are produced 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 commonly made from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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