L-543
Woven Fiberglass Polyester Prepreg
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Product Data Sheet Revised 9/18/07
Description

L-543 is a 260°F (127°C) curing polyester prepreg with excellent laminating properties. L-543 is available on 7781 style glass fabric or other styles of fabric as requested. L-543 is intended to be used as a single ply or multiple ply laminate for the manufacture of high quality plastic detail parts. L-543 meets the requirements of MIL-R-7575.

Advantages of L-543
  • L-543 allows the designer to create parts with excellent dimensional stability while maintaining excellent electrical and mechanical properties.
  • L-543 is formulated with a flame-retardant polymer matrix designed to meet stringent requirements for electronics, marine, and aircraft applications.
  • Processing of L-543 can be easily adapted to most heated presses or autoclaves.
  • L-543 is also an excellent laminating prepreg when heat resistance is a requirement.
  Physical Properties on 7781 Glass Fabric
  • Standard Weight: 0.102 lbs/ft2 (498 g/m2)
  • Standard Resin Solids: 40% by weight
  • Volatile Content: 2-5%
  • Standard Tack: Medium to High
  • 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
  • 60 days at room temperature (70°F or 21°C)
  Cure Cycle
  • 90 minutes at 260°F (127°C). Adjust pressure as needed. Vacuum, press, or autoclave.
  • Other cycles may be developed by the user.
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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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