L-551
Woven Epoxy Fiberglass Laminating Prepreg
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Product Data Sheet Revised 12/21/06
Description

L-551 is an epoxy/fiberglass prepreg designed to cure over a broad range of temperatures and pressures. L-551 is flame retardant and produces excellent void free laminates. L-551 is available on style 7781 fiberglass fabric and on many other commercially available fiberglass fabrics and mats. L-551 is intended for the manufacture of aircraft ducting, fairings, frames, clips, angles, webs, and various other detail parts requiring easy lay-up.

Advantages of L-551
  • L-551 uses a 100% solids resin system with less than 0.5% volatile content resulting in dense, void free laminates.
  • L-551 has excellent resistance to most fluids encountered in the aerospace environment.
  • L-551 is an excellent low cost prepreg for many room temperature tooling requirements such as drill and trim fixtures.
  Physical Properties on 7781 Glass Fabric
  • Standard Weight: 0.098 lbs/ft2 (479 g/m2)
  • Standard Resin Content: 38% by weight
  • Standard Tack: Slightly tacky on one side
  • Cured Ply Thickness: 0.010” (0.254 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)
  Shelf Life
  • 6 months at 40°F (4°C) or below
  • 7 days at Room Temperature (70°F or 21°C)
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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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