Quantum Composites QC-8700

Quantum Composites QC-8700 is a vinyl ester chopped E-glass fiber reinforced ESC® molding compound. It is easily moldable and provides parts that are high strength, fatigue resistant, with high heat resistance. It exhibits unusual toughness, and is suggested for applications subject to impacts and rough handling.

Functions: Molding Compound

Chemical Family: Vinyl Esters, Vinyls, Vinylics & Vinyl Derivatives

Reinforcement Material: Glass Fibers

Processing Methods: Compression Molding

Technical Data Sheet

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Properties

Color
Physical Form
Cured Properties
ValueUnitsTest Method / Conditions
Specific Gravity (Net Shape)1.89g/ccASTM D-792
Molding Shrinkage (Net Shape)max. 0.001 (max. 0.001)inch/inch (mm/mm)ASTM D-955
Flexural Strength (Net Shape)72,000 (496)psi (MPa)ASTM D-790
Flexural Modulus (Net Shape)3.1 x106 (21.4)psi (GPa)ASTM D-790
Tensile Strength (Net Shape)41,000 (283)psi (MPa)ASTM D-638
Tensile Modulus (Net Shape)3.4 x106 (23.4)psi (GPa)ASTM D-638
Izod Impact (notched) (Net Shape)32 (1709)ft.lb./in. (J/M)ASTM D-256
Glass Transition Temperature (Net Shapped)260 (127)°F (°C) Tan DeltaASTM D-7028
Uncured Properties
ValueUnitsTest Method / Conditions
Carbon Fiber Content (Nominal)-63%w/w
Resin Content (Nominal)-37%w/w
Fiber Length (Nominal)1inches

Technical Details & Test Data

Molding Suggestions

QC 8700 can be molded at temperatures in the range of 260-310°F, with 280°F suggested as a starting point. Cure times will be dependent on molding temperature and part thickness and will typically be 3-5 minutes. Detailed molding suggestions are available on request. Cool molded parts at ambient temperature. A cooling fixture may be needed depending on part thickness and geometry.

Packaging & Availability

Packaging Type

Storage & Handling

Shelf Life
2 Months (75°F)
Precautions

QC 8700 contains glass fibers and should be handled carefully in order to minimize skin contact. Molding areas should be well ventilated to minimize exposure to fumes. Presses must be provided with local exhaust to remove vapors from work areas. If adequate ventilation is not available, a respirator approved for removing organic vapor must be used.