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Ensinger PEI

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Reynolds Crystal Clear® 202 Clear Urethane Casting Resins
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced

Material Notes: Product Overview: Crystal Clear™ 200, 202, 204 and 206 are water white clear and made specifically for applications that require clarity. These rigid urethane casting resins differ only in working and demold times. Low viscosity ensures easy mixing and pouring. Crystal Clear™ resins cure at room temperature* with negligible shrinkage. Cured castings are UV Resistant and are not brittle. Vibrant colors and color effects are achieved by adding pigment dispersions. Applications include encapsulation, making prototype models, lenses, sculpture reproductions, decorative cast pieces, jewelry, prototype models, special effects and props. Crystal Clear™ 220 and 221 are harder, heat cured products that offer advantages over these room temp. cure products.

Information provided by Reynolds Advanced Materials

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.036 g/ccASTM D-1475
Viscosity 600 cPMixed; ASTM D-2393
Linear Mold Shrinkage 0.0125 in/inASTM D-2566
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80ASTM D-2240
Tensile Strength, Ultimate 3500 psiASTM D-638
Elongation at Break 10 %ASTM D-638
Tensile Modulus 86240 psiASTM D-638
Flexural Strength 5390 psiASTM D-790
Flexural Modulus 183200 psiASTM D-790
Compressive Strength 4200 psiASTM D-695
Compressive Modulus 44000 psiASTM D-695
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.40e+15 ohm-cmASTM D-257
Dielectric Constant 3.34
@Frequency 1000 Hz
ASTM D-150
 3.36
@Frequency 100 Hz
ASTM D-150
Dielectric Strength 260 V/milASTM D-149
Dissipation Factor 0.010
@Frequency 1000 Hz
ASTM D-150
 
Thermal PropertiesOriginal ValueComments
Heat Distortion Temperature 50.0 °CASTM D-648
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.498
@Temperature 20.0 °C
 1.498
@Temperature 25.0 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 90.0 minHandling Time
Pot Life 9.00 minASTM D-2471
 
Descriptive Properties
ColorClear
Mix Ratio100A:90Bby weight
Specific Volume26.7[cu. in./lb.]

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PREYN056 / 296757

Proto3000 – 3D Engineering Solutions

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