Friday, December 10, 2021

Covestro Makrolon Polycarbonate Sheeting offering light weight and break resistance

Makrolon Polycarbonate products offer a unique balance of helpful features including temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering plastic materials.
Polycarbonate is a very durable material. Although it offers significant impact-resistance, it has got reduced scratch-resistance and thus a hard coating could be applied to polycarbonate eyewear lenses and polycarbonate exterior motor vehicle equipment. The properties of polycarbonate are similar to 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 has better light transmission characteristics than many kinds of glass.
Polycarbonate has a glass transition temperature of approximately 150 °C (302 °F), therefore it softens slowly above this point and flows above about 300°C (572 °F). Tools need to be held at higher temperatures, generally above 80 °C (176 °F) to make strain- and reduced stress products.
Unlike most other thermoplastics, polycarbonate can undergo dramatic shape changes without breaking. Subsequently, for small changes in shape, it can be processed and formed   without needing to be heated using sheet metal techniques, for example forming bends on a brake. For even sharp angle bends having a tight radius, no heating is generally necessary. This makes it useful for prototyping applications where transparent or electrically non-conductive parts are necessary, which cannot be created from sheet metal. Note that PMMA/Plexiglas, that is certainly similar in looks to polycarbonate, but is brittle and can't be bent without heating.

The light weight of polycarbonate, compared with glass, has led to development of electronic view screens that replace the traditional 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 which still do require glass for its higher melting temperature and the ability to be etched with finer detail.
Other miscellaneous items manufactured from Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, riot shields, instrument panels, and common style 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 subjected to weathering or UV-radiation, a special surface treatment is needed. This may be a coating (e.g. for improved abrasion resistance), or a coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that 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. This liquid polycarbonate is then rapidly injected into molds, compressed under high pressure and cooled to produce a finished product , that only takes about a minute to complete.


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