Lexan Polycarbonate Flat Sheet are considered unbreakable
Polycarbonate materials offer a unique balance of beneficial features this includes high temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastic materials.
Polycarbonate is definitely a tough material. Even though it offers significant impact-resistance, it has a lower scratch-resistance and so a hard coating can be applied to polycarbonate eyewear and polycarbonate exterior automotive equipment. The characteristics relating to polycarbonate tend to be similar to those of polymethyl methacrylate (PMMA, acrylic), although 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 it has better light transmission characteristics than many kinds of glass.
Polycarbonate has 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 will have to be held at high temperatures, generally above 80 °C (176 °F) for making strain- and stress-free products.
Unlike almost all other thermoplastics, polycarbonate can undergo large changes in basic shape without breaking. Because of this, it may 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 useful for prototyping applications where transparent or electrically non-conductive parts are crucial, which cannot be produced from sheet metal. Remember that PMMA/Plexiglas, which happens to be similar in appearance to polycarbonate, but is brittle and cannot be bent without heating.
Polycarbonate is often utilized in eye protection, and also in other projectile-resistant see through or lighting applications that would normally require the use of glass, but require higher impact-resistance. Several types of lenses are manufactured from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety glasses for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are typically fabricated from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.
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