Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Material
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Key Features & Benefits
- Designed to replace first generation 350°F (176°C) cure systems
- Wide cure temperature process window of 260°F to 350°F (lower cures are possible depending on the application)
- Exhibits low void content, e.g., <2% after oven/vacuum cure.
- Excellent fiber property translation.
- 180°F Wet service temperature after ~270°F cure
- Good tack and drape characteristics after 30 days at room temperature.
- Product Forms
- Available on a wide variety of reinforcements including fiberglass and carbon
- Various Fabrics per customer requirements (e.g., plain, harness and twill weaves)
- Unitape and glass broad goods up to 60 inches wide
- Compatible with autoclave, vacuum bag/oven or press cure processes
Applications & Uses
- Markets
- Applications
- Composites End Use
- Composites Processing Methods
- Autoclave/ Cure Cycle
- Apply 24”Hg vacuum (minimum) for a minimum of 1 hour before cure
- Apply 40 -100 psi autoclave pressure, vent vacuum when pressure reaches 15 – 20 psi
- Ramp product temp to 270-280°F at 1 – 5° F (0.05 – 3°C)/min
- For Laminates > 0.125” thick, hold at 180°F for 60 minutes
- Hold product at 270-280°F for 110-130 minutes
- Cool to 150°F at 3 – 10°F/min prior to releasing autoclave pressure
- Applications / Qualifications
- Primary Aircraft Structures
- Fuselage
- Wing
- Control Surfaces
- Secondary Aircraft Structures
- Fairings
- Doors
- Radomes
- Bulkheads
- Vacuum/Oven Cure Cycle
- Apply 25”Hg vacuum (minimum) for a minimum of 1 hour before cure
- Ramp product temp to 270-280°F at 1 – 5° F (0.05 – 3°C)/min
- For laminates > 0.125” thick, hold at 180°F for 60 minutes
- Hold product at 270-280°F for 110-130 minutes
- Cool to 150°F at 3 – 10°F/min
- Thick Laminate Cure Cycle
- Slower ramp rate and multiple dwell times below 190°F are critical to remove excess energy from the system and avoid dangerous exotherms.
- Contact your Park representative to discuss specific part process requirements to optimize processing of E-765.
- Failure to properly control the exotherm can lead to a potential safety hazard and/or degradation of final material performance.
Properties
- Physical Properties
Value Units Test Method / Conditions Fabric Area Weight 150 gsm - Resin Solids 35±3 % - Volatile Content max. 1 % - Flow (275°F / 15psi) 18±6 % - Tack Medium - - Tg (dry, by DMA, onset storage mod) 150° C / 300°F - - Gel time (275°F) 2 - 6 minutes - Cure per ply thickness 0.0056 in - Dielectric Constant 4.5 Dk - Loss Tangent 0.02 Df - Flatwise Tensile Strength 1000 psi - ASTM-C-297 Cure Type Vacuum/Oven - - - Mechanical Properties
Value Units Test Method / Conditions Climbing Drum Peel 4 in lb/3 in ASTM-D-1781 Tensile Strength - Dry (65°F) 370 Ksi ASTM-D-3039-95 Tensile Strength - Dry (70°F) 370 Ksi ASTM-D-3039-95 Tensile Strength - Dry (180°F) 349 Ksi ASTM-D-3039-95 Tensile Strength - Wet (180°F) 333 Ksi ASTM-D-3039-95 Tensile Modulus - Dry (65°F) 18.8 Msi ASTM-D-3039-95 Tensile Modulus - Dry (70°F) 18.7 Msi ASTM-D-3039-95 Tensile Modulus - Dry (180°F) 18.2 Msi ASTM-D-3039-95 Tensile Modulus - Wet (180°F) 18.6 Msi ASTM-D-3039-95 Compressive Strength - Dry (65°F) 211 Ksi SACMA 1-94 Compressive Strength - Dry (70°F) 180 Ksi SACMA 1-94 Compressive Strength - Dry (180°F) 177 Ksi SACMA 1-94 Compressive Strength - Wet (180°F) 107 Ksi SACMA 1-94 Compressive Modulus - Dry (65°F) 17.9 Msi SACMA 1-94 Compressive Modulus - Dry (70°F ) 18.1 Msi SACMA 1-94 Compressive Modulus - Dry (180°F ) 18.4 Msi SACMA 1-94 Compressive Modulus - Wet (180°F ) 18 Msi SACMA 1-94 Short Beam Shear - Dry (65°F) 17 Ksi ASTM-D-2344 Short Beam Shear - Dry (70°F) 13 Ksi ASTM-D-2344 Short Beam Shear - Dry (180°F) 9 Ksi ASTM-D-2344 Short Beam Shear - Wet (180°F) 6 Ksi ASTM-D-2344 In-plane Shear Strength, V-notched - Dry (65°F) 26 Ksi ASTM-D-5379-93 In-plane Shear Strength, V-notched - Dry (70°F) 20 Ksi ASTM-D-5379-93 In-plane Shear Strength, V-notched - Dry (180°F) 16 Ksi ASTM-D-5379-93 In-plane Shear Strength, V-notched - Wet (180°F) 11 Ksi ASTM-D-5379-93 - Electrical Properties
Value Units Test Method / Conditions Frequency 9.375 GHz -