L-956
Laminating Woven Graphite Prepreg
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Product Data Sheet Revised 12/21/06
Description

L-956 is an excellent high temperature modified epoxy prepreg which exhibits outstanding performance at temperatures up to 400°F (204°C). L-956 is ideally suited for applications on light weight advanced aircraft for fairings, inlet ducting, leading edges, control surfaces, pylons, and radomes. L-956 is moisture resistance and has excellent compatibility with other graphite/epoxy systems.
Advantages of L-956
  • L-956 has an excellent balance between toughness, high temperature strength and weatherability.
  • L-956 may be co-cured with many of today’s epoxy adhesives systems to form load transfer interfaces.
  • L-956 is also supplied on light weight fiberglass fabric for use as a surfacing ply for graphite/epoxy laminates and facesheets to improve their damage tolerance.
  Physical Properties on 7 mil Graphite Fabric
  • Standard Weight: 0.070 lbs/ft2 (342 g/m2)
  • Standard Resin Content: 36% by weight
  • Volatile Content: Less than 5.0%
  • Standard Tack: Medium
  • Cured Ply Thickness: 0.007” (0.178 mm)
  • Other Weights, Resin Contents, and Fabrics are Available.
 Availability
  • Up to 60” width in rolls up to 100 yards long (152 cm x 91 m)
  • Standard widths: 42" and 50" (107 cm and 127 cm)
Shelf Life
  • 12 months at 0°F (-18°C)
  • 10 days at Room Temperature (70°F or 21°C)
Cure Cycles
Step Cure as follows:
  • 200°F (93°C) for 1 hour followed by 250°F (121°C) for 1 hour followed by 350°F (177°C) for 2 hours (rate of temperature rise = 5°F/minute) (2°C/minute approximately).
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NOTICE:Product data and parameters cited in this publication have been obtained in J.D. Lincoln, Inc. laboratories using the materials under carefully controlled conditions. The information, therefore, is believed to be accurate and correctly stated. Data of this type may be considered to be indicative of representative properties obtainable. J.D. Lincoln, Inc. cannot accept responsibility for the misapplication of these products, nor for their use under uncontrolled conditions. Numerical values resulting from the application of this material are dependant on processing details. It is recommended that the user develop his or her own application techniques and generate data consistent with his or her specific application and process.

 
       
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