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2006-08-01 News Headlines
Scratch resistant plastics for electronics manufacturers GE Plastics announces a new family of polycarbonate resins for such demanding electronic applications as mobile phones, computers, and digital cameras.
The keypads, housings, and other wear parts for mobile phones, computers,
and digital cameras can take a real beating from constant handling. Although
polycarbonate (PC) is a favorite choice for these components, until now
it has been necessary to hard-coat the resin to prevent abrasion and maintain
a good surface appearance. But secondary hard coating means extra cost,
additional processing time, and potential environmental impact. To help
solve this challenge, GE Plastics has developed a new family of Lexan*
PC resins featuring outstanding scratch resistance. Compared to standard
PC, GE’s Lexan DMX resins provide improved surface hardness without
the need for hard coating. These materials are excellent candidates for
transparent applications such as soft keys, infrared lenses, bezels, and
screens. “To keep their hardworking devices looking great without the added costs and cycle time needed for hard coating, electronics manufacturers wanted a better polycarbonate – and GE delivered,” said Harry Boot, general manager for Lexan resin, GE Plastics Pacific. “Our transparent Lexan DMX resin grades showcase GE’s innovation and responsiveness to customer needs. Compared to standard PC, they provide superior abrasion resistance without a coating. Plus, they are available in a wide range of colors for design creativity.”
As the premier engineering thermoplastic, Lexan* polycarbonate resin replaces the limitations of many traditional materials with its unmatched combination of high performance features. Lexan polycarbonate (PC) and PC-based resins offer impact resistance, outstanding dimensional stability and crystal clarity. Lexan resin is an amorphous engineering thermoplastic with high mechanical, optical, electrical and thermal properties. Lexan resin is available with a wide variety of additives, such as UV stabilizers and mold release agents. Grades include FDA-compliant, flame retardant, high flow, and glass reinforced. Five-Times Higher Pencil Hardness than Standard PC Featuring a special PC co-polymer, Lexan DMX resins provide significantly improved surface hardness. In independent laboratory tests using the pencil hardness (1 kgf) standard, these materials achieved an H rating compared to a much lower 2B rating for ordinary PC – equivalent to up to five times the hardness of the standard material. The GE resins even surpassed painted acrylonitrile butadiene styrene (ABS), PC/ABS, and other painted resins, which only achieved a mid-range F rating. Further, if the Lexan DMX resin grades are hard-coated with silicone or acrylic, their pencil hardness increases to 3H. Eliminating the need for secondary coating operations can provide several important benefits to manufacturers: - Lower costs by avoiding the purchase of coating materials and equipment GE’s Lexan DMX resins are available globally. They are currently
manufactured in Bergen op Zoom, the Netherlands; Mount Vernon, Indiana,
the United States; and Singapore. Production will expand to Moka City,
Japan, in 2006.
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