The LED tubes that use Covestro polycarbonate are tough, impact resistant, easy to control and have advanced features that enable directional light, accurate color-reproduction and a stable correlated color temperature. All of these excellent characteristics help make this new open office a more colorful and brighter place.
The positive effects Covestro’s Shanghai office has experienced are being replicated in offices all over the world as organizations flip the switch from old technology to cost- and energy-efficient LED lighting utilizing polycarbonate.
Polycarbonate offers much better impact strength and a higher class of flame retardance performance when compared to PMMA. This is important, particularly in the Japanese market. Due to frequent earthquakes, Japan has set up safety requirements to avoid tubes or A-lamps exploding and shattering with the potential to cause human injury. These safety requirements also apply to restaurants and food storage environments to keep food safe. Polycarbonate represents the best combination of performance properties to meet key requirements for LED tube applications. (see table)
Polycarbonate performance properties
|Key Requirement||Testing Method||Polycarbonate||PMMA||Glass||Indicator|
||The lower the better|
|Transmission||Luminous Transmittance (@2.0mm)||88~90%||~92%||>90%||The higher the better|
|Processing (Molding)||Melt Temperature||280~300°C||240~270°C||>500°C||The lower the better|
|Heat resistance||HDT||~125°C||~100°C||>500°C||The higher the better|
|Flame retardance||UL94 burning behaviour||V2-V0||HB||–||V0>V2>HB|
For LED diffusors, Covestro provides customers with a total solution that consists of injection molding and extrusion grades of polycarbonate resin, semi-finished polycarbonate sheets of different thicknesses and polycarbonate films.
Along with its materials, Covestro also provides its materials expertise – proactively providing on-site technical service, actively solving technical problems, providing a global, stable product supply and efficiently responding to customers’ inquiries. By doing so, Covestro is helping to facilitate the switch to cost-efficient and energy-efficient LED lighting.