Clear Casting Resins
Clear Plastic (RU-570 A/B)
RU-570 A/B is a clear urethane castable resin with good impact resistance developed for prototype applications, special effects, and light production where high clarity and durability are required. Because of building exothermal (chemical heat) reaction, size of parts may be limited.
Color: Clear, Transparent
Durometer, Shore D: 70 *75D Post Cured 6hrs @ 150F
Viscosity, Mixed: 700 cps
Mix Ratio: 60A/40B
Elongation: 27% (12%)
Tensile Strength: 4,575 psi (7870 psi)
Flex Strength Strain 5%: 4,475 psi (10,525 psi)
Flexural Modulus: 140,990 psi (240,540 psi)
Elastic Modulus: 95,950 psi (127,280 psi)
Refractive Index A: 1.4984
Heat Deflection Temp. 100F (150F)
Pot Life: 10-15 min
De-Mold Time: 2 Hours (1” thick)
Mixing Instructions:
De-air A & B components prior to mixing to removing any air in material. Mix A & B by the above ratio and de-air or pressurize in mold to remove air from the mixing process. The area where the RU-570 is processed should be controlled to eliminate dust and particles from mixture. Clear castings are sensitive to any foreign materials or air bubbles, which may appear during exothermic reaction if not processed properly. Clean mixing sticks and containers should be used. RU-570 should be sealed and stored in a dry area. A light mist of ER-2300 on back side of pour can reduce surface bubbles.
Casting:
RU-570 A/B must be cast in Platinum Silicone Molds or in a properly processed Tin Silicone Mold (R-1300 Series) that has been post cured at 150-200F for 4-6hours. RU-570 A/B is a high-impact resistant material, which cannot be polished easily. For optically clear castings, use silicone molds made from polished masters. All parts must be cast in one-piece molds with no or little parting lines for best results.
The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent.