L-291
Phenolic Fiberglass Prepreg
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Product Data Sheet Revised 12/20/06
Description
Fiberply L-291 (0°/90°) is a modified phenolic facesheet with self extinguishing and low heat release properties. L-291 (0°/90°) is intended to be used as a single ply or multiple ply skin for aramid/phenolic honeycomb or other cored aircraft interior sandwich panels.
Advantages of L-291
  • The L-291 system processes easily in most platen presses and autoclaves.
  • Improved strength and stiffness to weight ratios because excess resin deposits inherent with woven fiberglass prepregs are eliminated.
  • Pre-plied materials reduce the assembly labor in the production of sandwich panels.
  • Reduced cost relative to woven prepregs because the complicated steps of weaving, stitching, heat-cleaning, and refinishing have been eliminated. The fiberply process produces adhesive prepreg directly from fiber and resin.
  • The designer may order any length and width needed for a specific panel, thus reducing scrap.
  Physical Properties on 7 Mil Graphite Fabric
  • Standard Weight: 0.150 lbs/ft2 (732 g/m2)
  • Standard Resin Content: 33% by weight
  • Volatile Content: 10% Maximum by weight
  • Standard Tack: Press Grade Medium
  • Cured Ply Thickness: 0.014” (0.35 mm)
  • Other Weights and Resin Contents, and Fibers are Available.
  Availability
  • 50” x 122” Sheets (127 cm x 310 cm)
  • Custom Dimensions Available

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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