Quantum Composites QC-8704

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: mWR9Q4_Quantum-Composites-QC-8704.pdf
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QC-8704 is a vinyl ester based sheet molding compound (SMC) designed for compression and transfer molding of components requiring high structural strength. It exhibits unusual toughness, and is suggested for applications subject to impacts and rough handling. QC-8704 is also suggested for applications requiring excellent fatigue resistance. It incorporates short glass fibers for easy flow.
General Information
Filler / Reinforcement
  • Glass Fiber, 63% Filler by Weight
Features
  • Fatigue Resistant
  • Good Flow
  • Good Impact Resistance
  • Good Toughness
  • High Strength
Appearance
  • Black
  • Grey
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)0.35%ASTM D570
HardnessNominal ValueUnitTest Method
Barcol Hardness 65ASTM D2583
MechanicalNominal ValueUnitTest Method
Tensile Strength 276MPaASTM D638
Flexural Modulus 17200MPaASTM D790
Flexural Strength 414MPaASTM D790
ImpactNominal ValueUnitTest Method
Notched Izod Impact 1500J/mASTM D256
ElectricalNominal ValueUnitTest Method
Surface Resistivity 3.0E+14ohmsASTM D257
Volume Resistivity 5.0E+14ohms·cmASTM D257
Dielectric Strength 15kV/mmASTM D149
Dielectric Constant 4.70ASTM D150
Dissipation Factor 9.0E-3ASTM D150
Arc Resistance 134secASTM D495
ThermosetNominal ValueUnit
Shelf Life (24°C)8.7wk
Demold Time (138°C)3.0 to 5.0min
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