Polycarbonate plastic products have a great blend of beneficial features this includes high temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering materials.
Polycarbonate is a very high quality material. Although it has extraordinary impact-resistance, it has a lower scratch-resistance and thus a hard coating may be applied to polycarbonate eye wear lenses and polycarbonate exterior automobile equipment. The properties relating to polycarbonate are generally along the lines of those of Acrylic PMMA materials, although polycarbonate is definitely 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 most grades of glass.
Polycarbonate carries a glass transition temperature of approximately 150 °C (302 °F), as a result it softens gradually above this point and flows above about 300°C (572 °F). Tools ought to be held at warm to high temperatures, generally above 80 °C (176 °F) to produce strain- and stress-free products.
Unlike most other thermoplastics, polycarbonate can undergo dramatic shape changes without breaking or cracking. For that reason, it can be processed and formed cold using sheet metal techniques, for instance 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 required, which should not be crafted from sheet metal. Keep in mind that PMMA/Plexiglas, which is similar in looks to polycarbonate, but is brittle and cannot be bent with out a heating process.
The light weight of polycarbonate, as opposed to glass, has led to growth and development of electronic touch screens that replace glass with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and several LCD screens, though CRT, plasma screen and other LCD technologies generally still require glass for its higher melting temperature and the ability to be etched with finer detail.
Other miscellaneous items made out of Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, high impact riot shields, instrument panels, and common style blender jars. Many toys and hobby items are made of 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 is needed. This may be a coating (e.g. for improved abrasion resistance), or as a coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that begins as a solid material in the form of small pellets. In a manufacturing process called injection molding, the pelletized resin is heated until they melt in to a thick liquid. The melted liquid polycarbonate is then rapidly injected into a mold, compressed under high pressure and cooled to create a finished product , all in just a minute or so.
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