Polycarbonate products offer a great blend of beneficial features which include temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering materials.
Polycarbonate is definitely a long-lasting material. Whilst it offers higher impact-resistance, it has got low scratch-resistance and thus a hard coating is often applied to polycarbonate eye protection as well as polycarbonate exterior motor vehicle components. The properties associated with polycarbonate tend to be 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 it has better light transmission characteristics than many different types of glass.
Polycarbonate has a glass transition temperature near 150 °C (302 °F), so it softens gradually above this point and flows above about 300°C (572 °F). Tools must be held at high temperatures, generally above 80 °C (176 °F) in order to make strain- and reduced stress products.
Unlike most thermoplastics, polycarbonate can undergo large deformations without cracking. For that reason, it could be processed and formed without needing to be heated 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 required, which should not be crafted from sheet metal. Please keep in mind PMMA/Plexiglas, that is similar in looks to polycarbonate, but it is brittle and can't be bent unless it is heated.
Polycarbonate is frequently found in eye protection, as well as 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. Many different 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 normally made out of polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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