Polycarbonate products have a great blend of useful features this includes high temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering materials.
Polycarbonate is a very long-lasting material. Though it features tremendous impact-resistance, it's got a lower scratch-resistance and so a hard coating is often applied to polycarbonate eyewear lenses as well as polycarbonate exterior auto components. The characteristics relating to polycarbonate tend to be like those of Acrylic PMMA materials, except polycarbonate definitely 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 most grades of glass.
Polycarbonate has a glass transition temperature near 150 °C (302 °F), consequently it softens slowly above this point and flows above about 300°C (572 °F). Tools must be held at warm to high temperatures, generally above 80 °C (176 °F) to produce strain- and almost stress free products.
Unlike almost all other thermoplastics, polycarbonate can undergo dramatic changes in basic shape without breaking. Due to this fact, it can be processed and formed at room temperature using 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 valuable in prototyping applications where transparent or electrically non-conductive parts are required, which can't be crafted from sheet metal. Be aware that PMMA/Plexiglas, which happens to be similar in looks to polycarbonate, but it's brittle and cannot be bent with out a heating process.
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 require glass for its higher melting temperature and the ability to be etched with finer detail.
Other types of items made out of Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, police riot shields, instrument panels, and 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 subjected to weathering or UV-radiation, a special surface treatment is needed. This can be a coating (e.g. for improved abrasion resistance), or a coextrusion for enhanced weathering resistance.
Bayer Makrolon Polycarbonate is a thermoplastic that at the beginning, starts as a solid material in the form of small pellets. In a manufacturing process called injection molding, the pellets are heated until they melt in to a thick liquid. The liquid polycarbonate is then rapidly injected into a mold, compressed under high pressure and cooled to create a finished product , that only takes about a minute to complete.
Wednesday, January 1, 2025
Covestro Makrolon Polycarbonate Sheet offer high impact strength
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