Urethane Plastics
Silwhite
Silwhite A/B Off-White colored, solid cast, two-component, Urethane Pastic that is easy to process, has low exotherm (170F - 77C maximum), and de-molds in 5 - 10 minutes, making rapid production rates possible. Its low viscosity, and ease of paintability has proven this system a favorite among castable urethane resins.
Applications:
Furniture parts, sporting goods, decorative components, models, ornamental moldings, mirror and picture frames, production parts, and other similar items not requiring high temperature resistance.
Typical Physical Properties:
Solids By Weight (%) : 100%
Shrinkage: Unfilled .009, Filled .001
Viscosity @ 74 F (CPS): 150 A / 250 B
Typical Cured Material Properties:
Color: White
Hardness: 65D
Density: 64 lbs/ cu3 ft
Tensile Strength (psi): 2389
Elongation (percent at yield): 12.5
Reactivity Data:
Gel Time: 3 min
De-Mold Time: 5 – 10 min
Mixing Ratio: By Weight: 50 parts A / 50 parts B
By Volume: 47 % ISO / 53 % POLY
*Reactivity times are influenced by many equipment variables, including size of pour, part shape, ambient temperature and humidity.
Processing Instructions:
Blend components "A" and "B" at the specified ratio with mixing stick for about 12 to 15 seconds. Do not use high shear mixers unless mixture contains filler. Pour immediately into the mold--if mold is non-silicone, use appropriate release agent. Do not disturb the mold until part is ready to be de-molded. Pressurize mold to aid in air release when needed. Painting or coating operations can be performed when material is fully cured 24-72 hours at 75F. Post cure at 100F for several hours can speed up cycle after 24 hours room temperature cure. Wash the surface to be painted with grease devolving soap or mineral spirits before painting. Off ratio can cause oily surfaces, which will limit paint adhesion. Please pre-test all coatings.
Storage/Shelf Life: 6 months
Silwhite Plastic components must be stored in their original, unopened containers at temperatures between 75F and 85F. Shelf life of materials when kept in unopened sealed containers, at the recommended storage conditions, is six months. Containers should not be opened until ready for immediate use. To avoid air entrapment, undue agitation of containers should be avoided.
Accessories:
CU Pigments: Red, Yellow, Blue, Black, and White, Brown, Flesh
UD Translucent Dyes: Red, Yellow, Blue, Black
Bright Shade Powders: Glow Dust, Bright Green-Violet-Red-Yellow
Metal Powders: Bronze CB-21, Brass CG-10, Copper CC-11, Iron CI-30, White Metal CS-73
Fillers: Thermolite, Limestone CC-200, Hollow Glass HGF-100, Glass Beads GF-3000, Thermo-Conductive GAP-25, Marble Powder MP-200, Porcelain PP-300
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.