12.07.2015 Views

X-Force luminaires - Thorn Lighting

X-Force luminaires - Thorn Lighting

X-Force luminaires - Thorn Lighting

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X-<strong>Force</strong> - its constructionThe key materials employedin the manufacture of X-<strong>Force</strong><strong>luminaires</strong> are:• Glass Reinforced Plastic (GRP)The main advantages of GRP are chemical resistance and strength.It has a high strength to weight ratio and flexural strength. It is idealwhere luminaire bodies are exposed to harsh environments as itprovides resistance to UV light, extreme temperatures, salt air, and avariety of chemicals.• Polycarbonate (PC)Transparency, excellent toughness and a good dimensional stabilitymake polycarbonate (PC) one of the most widely used thermoplasticsfor lighting diffusers. Constraints include fair resistance to UV radiation.• Polymethylmethacrylate (PMMA)Better known as acrylic this material is used for diffusers because of itshigh light transmittance and good UV resistance. Its limitations are lowimpact strength and poor flame resistance.Comparison table PMMA PC GRPUV Resistance Good Fair GoodImpact Resistance 0.2Nm 10Nm 0.35NmResistance to ageing Excellent Good ExcellentSilicone free Yes Yes YesHalogen free Yes Yes YesGlow wire test 650°C 850°C 850°CHeat resistance of plastics 95° 125° 160°UV Transmittance 91% 89% N/A9

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