| Viscosity, uncured coating, cps, 75°F...........................................................................................55,000 % solvents and other volatiles............................................................................................................... 0 Acetone double rubs, 2 hours...........................................................................................................>180 Shore hardness D...............................................................................................................................>70 Elongation %........................................................................................................................................3-4 Tensile Strength, psi.......................................................................................................................>4200 Tensile Modulus, psi.................................................................................................................... 120,000 Coefficient of linear expansion, ppm per °C.........................................................................................60 Glass transition temp at RT (UV cure)...........................................................................................>90°C Glass transition temp with Post Cure (UV + post cure)..................................................................130°C Gardner impact, inch #, face............................................................................................................>340 reverse ................................................................................................... >300 Water resistance (5 minute post cure at 300°F (150°C)) 3 months, % weight gain............................< 1 Refractive index...............................................................................................................................1.517 Shrinkage, %.......................................................................................................................................2-3 Shelf life, unopened containers refrigerated @ 40-50°F...........................................................6 months |