Polycarbonate products offer a great blend of useful features this includes high temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering plastics.
Polycarbonate is a very sturdy material. Although it has exceptional impact-resistance, it has reduced scratch-resistance and thus a hard coating is often applied to polycarbonate eye protection and polycarbonate exterior automotive components. The characteristics associated with polycarbonate tend to be comparable to those of polymethyl methacrylate (PMMA, acrylic), but polycarbonate is always 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 most grades of glass.
Polycarbonate has 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 are required to be held at high temperatures, generally above 80 °C (176 °F) to help make strain- and stress-free products.
Unlike almost all other thermoplastics, polycarbonate can undergo large shape changes without breaking or cracking. As a result, it could be processed and formed without needing to be heated using standard sheet metal techniques, such as forming bends on a brake. For even sharp angle bends with a tight radius, no heating is usually necessary. This makes it useful for prototyping applications where transparent or electrically non-conductive parts are crucial, which can't be made from sheet metal. Keep in mind that PMMA/Plexiglas, that is similar in looks to polycarbonate, but is brittle and can't be bent with out a heating process.
Polycarbonate is frequently used in eye protection, in addition to other projectile-resistant viewing and lighting applications that would normally require 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 normally crafted from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
Thursday, March 25, 2021
Sheffield Plastics Polycarbonate Flat Sheet offer high impact strength
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