¡áƯ ¡ (Features ) *Lens Bond Type SK-9 is a single component modified Acrylate/Methacrylate Photopolymer. *This low viscosity liquid polymer is easy to apply and quick to pre-cure. * Lens Bond Type SK-9 cures by exposure to long wave ultraviolet light(365nm).Its high wetting and low shrinkage combine to give a superior bond. * Lens Bond Type Sk-9 is a very low viscosity liquid which prctically eliminates any air bubble problems. * Lens Bond Type SK-9 shows extremely high adhesion to many types of plastics * which are usually problematic to bond Lens Bond Optical Cement Type SK-9 permits the user to pre-cure the elements in 3 to 5 seconds using a 4 to 15 watt fluorescent UV light at 1 inch from the upper element. Full-cure is attained in 1 hour at 1 inch
¡á ±Ô°Ý(Specifications) Viscosity.......................................80 cps. to 100 cps. Also available in 40 cps. and 60 cps. Refractive Index (full-cured)............1.49 Refractive Index (uncured)..............1.47 Operational Temperature Range......-50¡É to 100¡É Youngs Modulus............................4 x 10^5psi Water Absorption...........................0.8% (after 7 days @ 22¡É) Tensile Shear.................................4000-4500 psi Shrinkage on Cure..........................<.25% pH.................................................<3.8 Specific Gravity...............................1.08 Elongation......................................4.7% to 5.1% Shore D. Hardness..........................90 Coefficient of Thermal Expansion.....7x10-5/¡É/0¡É to 50¡É Surface Tension..............................35-37 dynes/cm Glass Transition (Tg).......................99¡É to 101¡É Shipping and Storage.......................Type SK-9 needs no special handling or storage. It should, however, be kept away from intense light and elevated temperatures. Shelf Life........................................12 months from date of manufacture at room temperature. Size...............................................30gms(1oz); 500gms(16 oz)