Sheffield Plastics Polycarbonate Sheeting are clear and tough
Bayer Makrolon Polycarbonate products give you a balance of beneficial features this includes temp resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastics.
Polycarbonate is definitely a high quality material. Whilst it has increased impact-resistance, it has reduced scratch-resistance and so a hard coating is often applied to polycarbonate eye protection lenses and polycarbonate exterior automotive components. The properties relating to polycarbonate are similar to that of those of polymethyl methacrylate (PMMA, acrylic), but polycarbonate is going to be 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 many kinds of glass.
Polycarbonate has a glass transition temperature of around 150 °C (302 °F), consequently it softens gradually above this point and flows above about 300°C (572 °F). Tools need to be held at warm to high temperatures, generally above 80 °C (176 °F) for making strain- and almost stress free products.
Unlike almost all other thermoplastics, polycarbonate can undergo massive shape changes without breaking or cracking. Because of that, it may be processed and formed cold using sheet metal techniques, for example forming bends on a brake. For even 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 may not be created from sheet metal. Remember that PMMA/Plexiglas, that is certainly similar in looks to polycarbonate, but it's brittle and cannot be bent with out a heating process.
The light weight of polycarbonate, compared to glass, has led to continuing development of electronic touch screens that replace glass with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and many 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 made from Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, police riot shields, instrument panels, and common style blender jars. Many toys and hobby products are made out of polycarbonate parts, e.g. fins, gyro mounts, and flybar locks for use with radio-controlled helicopters.
For use in applications subjected to weathering or UV-radiation, a special surface treatment could be needed. This may be a coating (e.g. for improved abrasion resistance), or as a coextrusion for enhanced weathering resistance.
Bayer Makrolon Polycarbonate is a thermoplastic that starts as a solid plastic material in the form of small pellets. In a manufacturing process called injection molding, the pellets are heated until they begin to melt. The liquid polycarbonate is then rapidly injected into the mold - shaped like the part, compressed under high pressure and cooled to create a finished product in a matter of minutes.
Comments
Post a Comment