Epoxy Prepregs

ST 94

SINGLE SIDED SPRINT™
  • Drape and tackiness optimised for excellent handling
  • Ideal for complex or vertical mouldings
  • Excellent balance of mechanical performance and toughness

ST 94 Single Sided SPRINT™ is a moulding material that consists of a layer of dry reinforcement plied to a precast, precatalysed resin film.

ST 94 is a toughened hot-melt, epoxy resin that offers an extremely good balance of mechanical properties. It has been formulated to give an ideal tack level at workshop temperature. It is ideal for structural components where improved impact performance and resistance to resin microcracking is desired. ST 94 has a flexible cure envelope from 12 hours at 85°C to 45 minutes at 120°C. This makes it suitable for use in regular part production as well as for the development of trial components.

Typical Applications

Single Sided SPRINT™ has been developed for use in large marine structures where heavyweight materials need to remain intact in the mould during the long build time of such products.

Technical Data

​Min Cure Temp/Time
PROPERTY ULTRA SLOW CURE CYCLE STANDARD CURE CYCLE FAST CURE CYCLE
Processing Method Vacuum Bag
Typical Ramp Time 0.3°C (0.5°F) per minute 1°C (1.8°F) per minute 2°C (3.6°F) per minute
Cure Temperature 78°C (172°F)
78°C (172°F) 75°C (167°F)
Cure Dwell Time 120 (min)
1 hour 0.5°C (0.9°F) per minute to 90°C (194°F)
Post-Cure Temperature 85°C (185°F) 85°C (185°F) 120°C (248°F)
Post-Cure Dwell Time 600 (min) 600 (min) 45 (min)
Cure Pressure -1(bar)
Dry Tg1 (DMA) 103°C / 217°F 116°C (241°F) 117°C (243°F)
​​Cured Resin Prop

Resin cast oven cured using standard processing techniques and standard cure of 12 hours at 85°C (185°F)

PROPERTY 12 HOURS AT 85°C (185°F) TEST STANDARD
Tensile Strength 69 MPa 10.0 ksi ISO 527-2
Tensile Modulus 3.4 GPa 0.49 Msi ISO 527-2
Flexural Strength 102 MPa 14.8 ksi ISO 178
Flexural Modulus 2.6 GPa 0.38 Msi ISO 178
Compressive Strength 137 MPa 19.9 ksi ISO 604
Compressive Modulus 3.4 GPa 0.49 Msi ISO 604
​Woven Lam Prop

Cured using standard processing techniques and a minimum cure time of 15 minutes at 165°C (329°F)

PROPERTY QEA 1201 YE1597
Fibre Areal Weight Quad E-glass / Aramid Hybrid Triaxial E-glass
Resin Content 35% 33%
Cure Method Vacuum Bag Vacuum Bag
Cure Schedule 12 hours / 85°C (185°F) / -1bar 12 hours / 85°C (185°F) / -1bar
Number of Plies 2 2
Glass Transition Temperature 116°C (241°F) 116°C (241°F)
Cured Ply Thickness 1.17mm 0.0461in 1.25mm 0.0496in
0° Tensile Cured Fibre Volume 45.8% 48.8%
0° Tensile Strength 363 MPa 53 Ksi 785 MPa 114 Ksi
0° Tensile Modulus 23.5 GPa 3.4 Msi 38.4 GPa 5.6 Msi
0° Compressive Str. Fibre Volume 44.0% 48.6%
0° Compressive Strength 440 MPa 64 Ksi 885 MPa 128 Ksi
0° Compressive Mod. Laminte Fibre Volume 47.1%
48.2%
0° Compressive Modulus 27.4 GPa 4.0 Msi 40.2 GPa 5.8 Msi
90° Tensile Cured Fibre Volume 46.3% 50.3%
90° Tensile Strength 374 MPa 54 ksi 96 MPa 14 ksi
90° Tensile Modulus 24.6 GPa 3.6 Msi 15.4 GPa 2.2 Msi
Flexural Fibre Volume 46.9% 49.3%
0° ILSS Fibre Volume 45.9% 48.7%
0° ILSS 33.3 MPa 4.8 Ksi 55.1 MPa 8.0 Ksi
90° ILSS Fibre Volume 49.7% 49.1%
90° ILSS 35.4 MPa 5.1 ksi 10.4 MPa 1.5 ksi
​Third Party Certs
CERTIFICATE ISSUER CERTIFICATE
Germanischer Lloyd WP 1430024 HH
Germanischer Lloyd WP 1430025 HH
Germanischer Lloyd WP 1430032 HH
​Ancilliaries
PRODUCT DESCRIPTION
SF 80 SPRINT™ Toughened Surfacing Film
SA 80 Epoxy Adhesive Film
SP 9435 Mono-Component Epoxy System