Crystal Clear® 202

About
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. A separate tech bulletin is available for Crystal Clear® 220 and 221 at www.smooth-on.com. CAUTION: NOT FOR HOME USE. THIS PRODUCT IS FOR INDUSTRIAL USE ONLY. Proper ventilation, A NIOSH Approved Respirator and Protective Clothing (gloves and long sleeves) are required to minimize the risk of inhalation and dermal sensitization. If breathing is affected or a dermal rash develops, immediately cease using this product and seek medical attention. Read SDS before using.&&

Product Description
Material StatusCommercial: Active
FeaturesLow Viscosity,Good coloring,Low contractility,Good Clarity,Good Rigidity,Weather resistance is good
AvailabilitysEurope,North America,Asia Pacific,Latin America,Africa & Middle East
Process Methodscasting

Technical Data
PHYSICALNominal valueUnitTest method
Density1.03g/cm³ASTM D1475
Specific volume0.965cm³/gASTM D1475
Molding shrinkage
MD1.3%ASTM D2566

Thermosetting mixed viscosityNominal valueUnitTest method
stripping time
23℃90min

Supplementary InformationNominal valueUnitTest method
Mixing ratio100A:90B by weight 

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D80 ASTM D2240
Tensile Modulus595MPaASTM D638
Tensile Strength24.1MPaASTM D638
Tensile Strain
fracture10%ASTM D638
Flexural Modulus1260MPaASTM D790
Flexural Strength37.2MPaASTM D790
Compressive Modulus303MPaASTM D695
Compressive Strength29.0MPaASTM D695

THERMALNominal valueUnitTest method
Hot deformation temperature HDT
1.8 MPa, unannealed48.9ASTM D648
storage stability9.0min

OPTICALNominal valueUnitTest method
Refractive Index
20℃1.49888%
25℃1.49893%

ELECTRICALNominal valueUnitTest method
Dielectric Strength10.24kV/mmASTM D149
Dielectric Constant
100Hz3.36ASTM D150
1 KHz3.34ASTM D150
Dissipation Factor
100Hz0ASTM D150
1 KHz0.01ASTM D150
Volume Resistance1.4E15ohm·cmASTM D257

Notes
1. Typical properties: these are not to be construed as specifications.
2. 20°C
3. Cure Time
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