Covestro Makrolon Polycarbonate Flat Sheet offering light weight and break resistance
Makrolon Polycarbonate materials give you a balance of beneficial features which include temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering plastics.
Polycarbonate is definitely a long-lasting material. Though it has considerable impact-resistance, it possesses lower scratch-resistance and thus a hard coating is applied to polycarbonate eyeglasses lenses and polycarbonate exterior automotive equipment. The characteristics associated with polycarbonate are generally similar to those of common Acrylic materials, but polycarbonate is undoubtedly 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 approximately 150 °C (302 °F), as a result it softens gradually above this point and flows above about 300°C (572 °F). Tools are required to be held at higher temperatures, generally above 80 °C (176 °F) for making strain- and stress-free products.
Unlike almost all other thermoplastics, polycarbonate can undergo large deformations without breaking or cracking. Because of that, for small changes in shape, it can be processed and formed at room temperature using standard sheet metal techniques, which include forming bends on a brake. Even for sharp angle bends with a tight radius, no heating is generally necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are important, which can't be crafted from sheet metal. Note that PMMA/Plexiglas, which is similar in looks to polycarbonate, but is brittle and cannot be bent unless it is heated.
The light weight of polycarbonate, unlike 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 generally still require glass for its higher melting temperature and its ability to be etched in finer detail.
Other kinds of items manufactured from 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 produced from 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 can 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 material in the form of small pellets. In a manufacturing process called injection molding, this pellet material is heated until they begin to melt. The melted liquid polycarbonate is then rapidly pushed 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