Bayer Makrolon Polycarbonate Flat Sheet offering light weight and break resistance
Polycarbonate plastic materials have a unique balance of useful features including temp resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering plastics.
Polycarbonate is definitely a high quality material. Even though it has high impact-resistance, it's got low scratch-resistance and so a hard coating can be applied to polycarbonate eyewear lenses as well as polycarbonate exterior automobile components. The characteristics relating to polycarbonate are generally similar to those of common Acrylic materials, and yet polycarbonate is undoubtedly 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 of about 150 °C (302 °F), therefore it softens gradually above this point and flows above about 300°C (572 °F). Tools will have to be held at high temperatures, generally above 80 °C (176 °F) to make strain- and almost stress free products.
Unlike most thermoplastics, polycarbonate can undergo massive shape changes without breaking or cracking. Hence, it may be processed and formed at room temperature using sheet metal techniques, for example forming bends on 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 needed, which can not be produced from sheet metal. Keep in mind that PMMA/Plexiglas, which is similar in appearance to polycarbonate, but it is brittle and can't be bent at room temperature.
Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant optical type 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 goggles for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are normally made up of polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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