Epoxy Prepregs

SPARPREG™

UNIDIRECTIONAL EPOXY PREPREG
  • UD prepreg ideal for use in thick sections
  • Excellent handling & processing properties during lamination
  • Recommended cure between 85ºC / 120ºF and 120ºC / 250ºF
  • Compatible with SPRINT™ / prepreg products
  • Excellent mechanical properties
  • Out-of-autoclave curing
  • Available with glass or carbon fibre

SparPreg™ was developed to benefit the lay-up of thick UD sections, such as wind turbine blade spars. The material can produce thick laminates of exceptional quality with low void content, without the need for an intermediary debulking process or additional dry fabric reinforcement to aid air removal. The net result enables blade manufacturers to eliminate production steps and redundant materials and increase capacity.

SparPreg™ has been specially formulated to achieve the outstanding in-cure and mechanical performance of the WE 91prepreg and WT 93 SPRINT™ resin systems. SparPreg™ can be cured at temperatures as low as 85°C / 185°F, but can also be used for the rapid manufacture of components at 120°C / 250°F.

Typical Applications

SparPreg™ is an advanced UD prepreg, developed to enable the economic manufacture of unidirectional spar caps for more demanding blade designs, ideal for use in conjunction with other Gurit products.

Essential Product

Readily available to purchase via Gurit's global distributor network click to find a distributor near you.

Technical Data

​Cure Temp/Time

Recommended minimum cure is 10 hours at 85°C (185°F)

PROPERTY OVEN / VAC BAG
TEST STANDARD
Typical Laminate 4 plies of 600g/m2 UD Carbon SparPreg™ -
Typical Ramp Time 1–2°C (2–4°F) per minute -
Cure Temperature 85°C (185°F) 90°C (194°F) 95°C (203°F) 100°C (212°F) 110°C (230°F) 120°C (248°F) -
Cure Dwell Time 600 (min) 360 (min) 270 (min) 180 (min) 90 (min) 45 (min) -
Cure Pressure -1bar (14.5Psi) -
De-mould Temperature < 60°C (140°F) -
Dry Tg1 (DMA) 110-125°C / 230-257°F ASTM D7028



​​UD Carbon Lam

Cured using recommended minimum cure of 45 minutes at 120°C (248°F)

PROPERTY CARBON FIBRE #1 CARBON FIBRRE #2
Filaments per tow 48K 60K
Fibre Density 1.8g/cm3 0.065lb/in3 1.82g/cm3 0.066lb/in3
Fibre Modulus 255GPa 37.0 Msi 250 GPa 36.3 Msi
Fibre Strength 4.3 GPa 0.62 Msi 4.9 GPa 0.71 Msi
Resin Content 34% 34%
Cure Method Vacuum bag cured at -1 bar
Cure Schedule 45 minutes at 120°C (248°F)
Cured Ply Density 1.55g/cm3 0.056lb/in3 1.55g/cm3 0.056lb/in3
Glass Transition Temperature 110-120°C 230-248°F 110-120°C 230-248°F
Cured Ply Thickness 0.60mm 0.024in 0.60mm 0.024in
0° Tensile Cured Fibre Volume 56.4% 56.4%
0° Tensile Strength 2234 MPa 324 Ksi 2232 MPa 324 Ksi
0° Tensile Modulus 140 GPa 20.3 Msi 140 GPa 20.3 Msi
0° Compressive Strength Fibre Volume 54.6% 55.6%
0° Compressive Strength 1183 MPa 171 Ksi 1187 MPa 172 Ksi
0° Compressive Mod. Fibre Volume 57.2% 56.8%
0° Compressive Modulus 123 GPa 17.8 Msi 122 GPa 17.7 Msi
90° Tensile Cured Fibre Volume 57.2% 57.2%
90° Tensile Strength 45 MPa 6.5 Ksi 58 MPa 8.4 Ksi
90° Tensile Modulus 7.9 GPa 1.15 Msi 7.7 GPa 1.12 Msi
90° Compressive Str. Fibre Volume 53.9% 60.3%
90° Compressive Strength 146 MPa 21 Ksi 213 MPa 31 Ksi
90° Compressive Mod. Fibre Volume 50.5% 57.2%
90° Compressive Modulus 7.2 GPa 1.0 Msi 8.8 GPa 1.3 Msi
0° Flexural Strength 1368 MPa 198 Ksi 1267 MPa 184 Ksi
0° Flexural Modulus 114 GPa 16.5 Msi 108 GPa 15.7 Msi
+/-45° IPS Fibre Volume 54.9% 58.0%
+/-45° In-Plane Shear Strength 51 MPa 7.4 Ksi 63 MPa 9.1 Ksi
+/-45° In-Plane Shear Modulus 4.9 GPa 0.7 Msi 4.9 GPa 0.7 Msi
+/-45° In-Plane Shear Poison's Ratio 0.79 0.81
0° ILSS Fibre Volume 56.3% 56.1%
0° ILSS 81 MPa 11.7 Ksi 85 MPa 12.3 Ksi
​UD Glass Lam

Cured using recommended minimum cure of 45 minutes at 120°C (248°F)

PROPERTY E-GLASS R-GLASS
Resin Content 32%
Cure Method Vacuum bag cured at -1 bar
Cure Schedule 45 minutes at 120°C (248°F)
Cured Ply Thickness 0.81mm 0.0319in 0.83mm 0.0327in
0° Tensile Cured Fibre Volume 56.9% 56.9%
0° Tensile Strength 935 MPa 136 Ksi 1157 MPa 168 Ksi
0° Tensile Modulus 44 GPa 6.4 Msi 49 GPa 17.1 Msi
0° Compressive Strength Fibre Volume 58.3% 57.3%
0° Compressive Strength 1001 MPa 145 Ksi 999 MPa 145 Ksi
0° Compressive Mod. Fibre Volume 65.0% 65.9%
0° Compressive Modulus 42 GPa 6.1 Msi 46 GPa 7.1 Msi
90° Tensile Cured Fibre Volume 59.5% 58.9%
90° Tensile Strength 42 MPa 6.1 Ksi 44 MPa 6.4 Ksi
90° Tensile Modulus 12 GPa 1.7 Msi 13 GPa 1.9 Msi
90° Compressive Str. Fibre Volume - 59.8%
90° Compressive Strength - - 118 MPa 17.1 Ksi
90° Compressive Mod. Fibre Volume - 63.0%
90° Compressive Modulus - - 13 GPa 1.9 Msi
0° Flexural Strength 1347 MPa 195 Ksi - -
0° Flexural Modulus 42 GPa 6.1 Msi - -
+/-45° IPS Fibre Volume 52.5% 53.5%
+/-45° In-Plane Shear Strength 39 MPa 5.7 Ksi 50 MPa 7.3 Ksi
+/-45° In-Plane Shear Modulus 4.3 GPa 0.62 Msi 5.8 GPa 0.84 Msi
+/-45° In-Plane Shear Poison's Ratio 0.62 0.65
0° ILSS Fibre Volume 62.8% 57.5%
0° ILSS 71 MPa 10.3 Ksi 71 MPa 10.3 Ksi
​Cured Resin
PROPERTY SPARPREG RESIN CAST TEST STANDARD
Tensile Strength 57 - 62 MPa Ksi ISO 527-2
Tensile Modulus 3.0 GPa Msi ISO 527-2
Compressive Strength 125 - 132 MPa Ksi ISO 178
Compressive Modulus 4.0 GPa Msi ISO 178
​3rd Party Cert
CERTIFICATE ISSUER CERTIFICATE
Germanischer Lloyd WP 1530019 HH
Lloyds Register MATS/4600/1
​Ancillaries
PRODUCT DESCRIPTION
SF 80 SPRINT™ Toughened Surfacing Film
SA 80 Epoxy Adhesive Film
SP 9435 Mono-Component Epoxy System