Quantum Composites QC-8740

Category: Vinyl Ester , Vinyl Ester
Manufacturer: Quantum Composites Inc.
Trademark: Quantum Composites
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: gydr5i_Quantum-Composites-QC-8740.pdf
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QC-8740 is a vinyl ester based sheet molding compound (SMC) designed for compression molding of components requiring toughness and flame retardance. It meets the requirements for a number of commercial and military specifications.
General Information
Filler / Reinforcement
  • Glass Fiber, 37% Filler by Weight
Features
  • Flame Retardant
  • Good Toughness
Appearance
  • Black
  • Matte Finish
Forms
  • SMC - Sheet Molding Compound
Processing Method
  • Compression Molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.90g/cm³ASTM D792
Molding Shrinkage - Flow 0.10%ASTM D955
Water Absorption (24 hr)0.30%ASTM D570
MechanicalNominal ValueUnitTest Method
Tensile Strength 214MPaASTM D638
Flexural Modulus 13800MPaASTM D790
Flexural Strength 379MPaASTM D790
Compressive Strength 310MPaASTM D695
ImpactNominal ValueUnitTest Method
Notched Izod Impact 1600J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (1.8 MPa, Unannealed)149°CASTM D648
ThermosetNominal ValueUnit
Shelf Life (24°C)8.7wk
Demold Time (149°C)2.0 to 4.0min
InjectionNominal ValueUnit
Mold Temperature 132 to 149°C
Injection Pressure 2.07 to 6.89MPa
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