24 September 2013
24 September 2013
Gurit launched a new range of composite materials for the automotive industry at the Composites Europe Exhibition in Stuttgart, Germany.
Gurit showcased its new range of composite materials for the automotive industry. The range includes SC 110 Cosmetic Carbon Prepreg. SE 200 Structural Epoxy Prepreg and PN901 High Tg Prepreg.
Gurit says the SC 110 is a new cosmetic grade prepreg that utilises a high clarity, versatile hot-melt, epoxy resin formulation. The unique formulation ensures that no whitewash or white spots are evident in the cured resin. It is ideal for manufacturing high visual quality components using autoclave, press and vacuum-only processing. It can be cured at temperatures as low as 80°C, or it can be used for faster moulding of components at 120°C. This is achieved with a good out-life of up to 3 weeks at 21°C. It is a toughened system, and offers excellent mechanical properties on a wide variety of reinforcing fabrics and fibres.
Gurit explains the SE 200 is a high strength toughened epoxy system that has a flexible cure envelope ranging from 135°C to 200°C. SE 200 has been developed to enable rapid part manufacture through a number of composite processing methods. The minimum cure temperature is 135°C from which SE 200 develops Tg and strength properties at a level associated with high temperature 195°C curing systems. Higher temperature cures in excess of 180°C will achieve the best dry and wet thermal performance. Using the appropriate press moulding technology it is possible to achieve a 15 minutes hot-in / hot-out cure at 195⁰C, making SE 200 suitable for the economic production of automotive parts. SE 200 Structural Prepreg can be used in the making of parts such as structural lower tubs, bulkheads, front and rear scuttles, exhaust tunnels and other structural components.
According to Gurit the PN901 resin is an ideal matrix system for high temperature composite applications, as it combines ease of processing and handling convenience of epoxy resins, high temperature stability of polyimides, and flame and fire resistance of phenolics. A 135°C cure for 75 minutes combined with a post-cure, enables PN901 to generate a Tg in excess of 300⁰C, making PN901 ideal for applications in composite structures, which are exposed to very high temperatures. The flame and smoke characteristics of PN901 composites show that this resin possesses superior flame retardant properties and holds a wide range of Aerospace grade FST (Fire/Smoke/Toxicity) standards.
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