BCC BC 8690E Resins

About
BC 8690E is a two-component urethane elastomer compound specifically designed for casting applications. This product is safe, easy-to-handle, room temperature mixing and curing system that contains no TDI, MDA or MOCA. BC 8690E is insensitive to moisture during storage and normal handling; hence, this system will make dependably good void-free parts without the foaming problems that some conventional urethane systems exhibit. The low shrinkage, low viscosity, superior toughness, and excellent detail reproduction of BC 8690E makes this system ideal for general purpose castings and quality tooling operations.&&

Product Description
GenericTSU
Material StatusCommercial: Active
FeaturesGood flexibility,Low Viscosity,Low contractility,Moisture resistance
AvailabilitysNorth America
Process Methodscasting

Technical Data
PHYSICALNominal valueUnitTest method
Density1.07g/cm³ASTM D792
Shrinkage rate
MD0.25%ASTM D955

elastic bodyNominal valueUnitTest method
tear strength68.3kN/mASTM D624

THERMALNominal valueUnitTest method
Thermosetting components 
resin按重量计算的混合比: 100 
Hardening method按重量计算的混合比: 50 
storage stability
24 ℃10 to 12min

Thermosetting mixed viscosityNominal valueUnitTest method
25℃2500cPASTM D2393
stripping time
25℃480 to 840min

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s A87 ASTM D2240
tensile strength18.6MPaASTM D638

Notes
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