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UV-resistant DuPont Rynite PET resins for photovoltaic cells
Drawn from its portfolio of high-performance polymers, UV-resistant DuPont Rynite PET resins offer a balance of properties which makes them a 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 Performance Polymers innovative materials and solutions can help manufacturers differentiate their photovoltaic systems and design the right system for the right application,” says Orvar Otterstedt, global PV market development manager at DuPont Performance Polymers.
“Our materials can be used to reduce cost and increase the sustainability of many components and systems used within the photovoltaic industry, including frames, inverters, connectors and junction boxes. Accordingly, we have invested in material and applications development for the photovoltaic industry and welcome the opportunity to support new industry partners who need innovative materials and construction-friendly solutions to drive the growth of photovoltaics beyond grid parity.”
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