Delrin ® is used for a Concentrating Solar Power (CSP) bearing, which helps the curved mirros to follow the movement of the sun. Drawn from its portfolio of high-performance polymers, UV-resistant DuPont™ Rynite® PET resins offer an excellent balance of properties which makes them an ideal candidate for the cost-effective manufacturing of photovoltaic module frames and components.
Two specific grades are currently available from DuPont for these applications: Rynite® 935SUV is a 35% glass-fiber/mineral reinforced, UV stabilized grade of polyethylene terephtalate (PET) suitable for injection molding; Rynite® 540SUV is a 40% glass-fiber reinforced, UV stabilized grade of PET suitable for extrusion and injection molding.
Both grades combine high stiffness with low warpage and have been specifically developed for long-term outdoor applications. Other DuPont engineering polymers for the photovoltaic sector include flame-retardant DuPont™ Zytel® nylon for junction boxes and inverters, and low-wear/low-friction DuPont™ Delrin® acetal resin for bearings used in sun-tracking mirror installations, for example.
When used in photovoltaic applications, DuPont’s polymers can help increase design flexibility for greater ease of assembly and installation; provide an opportunity for functional integration (thereby reducing the overall number of components); and when produced in large numbers, offer one of the most cost-competitive methods of production through injection molding and extrusion.
Moreover, high performance thermoplastics such as Rynite® can offer a high degree of stiffness for structural strength, excellent outdoor performance, high impact resistance, corrosion resistance and good aesthetics. By using Rynite® PET for frames, resistance to ultraviolet rays, heat, wind and significant loads of snow is assured, as well as enhanced durability and a high surface finish.
DuPont™ Delrin®, DuPont™ Crastin® and DuPont™ Zytel® are part of a broad and growing portfolio of products represented by DuPont Photovoltaic Solutions, which connects science and technology from across the company on a global scale to help support the dramatic growth in the photovoltaic industry. To learn more, please visit http://photovoltaics.dupont.com
The DuPont Performance Polymers business manufactures and sells Crastin® PBT and Rynite® PET thermoplastic polyester resins, Delrin® acetal resins, Hytrel® thermoplastic polyester elastomers, DuPont™ ETPV engineering thermoplastic vulcanizates, Minlon® mineral reinforced nylon resins, Neoprene® polychloroprene, Tynex® filaments, Vespel® parts and shapes, Kalrez® perfluoroelastomer parts, Vamac® ethylene acrylic elastomers (AEM), Viton® fluoroelastomers, Viton® FreeFlow processing aids, Zytel® nylon resins and Zytel® HTN high-performance polyamides. These products serve global markets in the aerospace, appliance, automotive, consumer, electrical, electronic, healthcare, industrial, sporting goods and many other diversified industries.
DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 90 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.