Makrolon Polycarbonate materials give you a balance of helpful features including temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastic materials.
Polycarbonate is a very high quality material. Though it has higher impact-resistance, it’s got minimal scratch-resistance and thus a hard coating can be applied to polycarbonate eye protection lenses as well as polycarbonate exterior automotive equipment. The characteristics of polycarbonate tend to be comparable 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 near 150 Â°C (302 Â°F), in order that it softens gradually above this point and flows above about 300Â°C (572 Â°F). Tools need to be held at higher temperatures, generally above 80 Â°C (176 Â°F) to make strain- and reduced stress products.
Unlike most thermoplastics, polycarbonate can undergo large shape changes without cracking. For that reason, it may be processed and formedÂ Â at room temperature using standard sheet metal techniques, such as forming bends with a brake. Even for sharp angle bends having a tight radius, no heating is usually necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are necessary, which can not be crafted from sheet metal. Keep in mind that PMMA/Plexiglas, which happens to be similar in looks to polycarbonate, but is brittle and can’t be bent without heating.
The light weight of polycarbonate, unlike glass, has led to continuing development of electronic view screens that replace glass materials with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and some LCD screens, though CRT, plasma screen and other LCD technologies which still do require glass for its higher melting temperature and its ability to be etched in finer detail.
Other kinds of items produced from Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, police riot shields, instrument panels, and blender jars. Many toys and hobby goods are constructed from polycarbonate parts, e.g. fins, gyro mounts, and flybar locks for use with radio-controlled helicopters.
For use in applications exposed to weathering or UV-radiation, a special surface treatment maybe needed. This either can be a coating (e.g. for improved abrasion resistance), or perhaps the coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that begins as a solid plastic material in the form of small pellets. In a manufacturing process called injection molding, these small pellets are heated until they melt and become a very thick liquid. This liquid polycarbonate is then rapidly injected into a mold, compressed under high pressure and cooled to create a finished product in a matter of minutes.