L-502
Woven Adhesive Prepreg
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Product Data Sheet Revised 12/21/06
Description

L-502 is a 250°F (121°C) curing, high peel strength, toughened, epoxy prepreg available on fiberglass fabrics such as 7781 style or other styles as requested. L-502 is intended to be used as a single ply or multiple ply skin for aramid/phenolic honeycomb, aluminum honeycomb or PVC foam core sandwich panels and especially suited for radomes.

Advantages of L-502
  • No adhesive is required because of the high peel strength and high toughness of the L-502 resin matrix. L-502 can be bonded directly to a variety of core materials.
  • Easy processing is another major advantage. L-501 can be cured with vacuum bag, press or autoclave type cures from 90 minutes at 235°F (113°C) or in just 40 minutes at 275°F (135°C) with contact pressure (235°F (113°C) cure temperatures are recommended for urethane or PVC core).
  • L-502 is also an excellent prepreg when high impact strength and high toughness are required.
  • Excellent transmission properties for electromagnetic applications (radomes).
  Physical Properties on 7781 Glass Fabric
  • Standard Weight: 0.105 lbs/ft2 (513 g/m2)
  • Standard Resin Content: 42% 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)

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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