L-933
Woven Adhesive Prepreg
Click For
Page 2
Product Data Sheet Revised 12/21/06
Description

L-933 is a 250°F (121°C) curing prepreg with a clear epoxy resin matrix. Available on carbon fabrics such as style 3K70P or other styles as requested. L-933 is intended to be used as a single ply or multiple ply laminate or a co-cured skin for aramid/phenolic honeycomb, aluminum honeycomb or PVC foam core sandwich panels.

Advantages of L-933
  • The clear resin allows the designer to create parts with surface esthetics which shows the fiber of the fabric.
  • L-933 can be bonded directly to a variety of core or surfacing materials.
  • Easy processing is another major advantage. L-933 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).
  Physical Properties on 3K70P Style Carbon Fabric
  • Standard Weight: 0.079 lbs/ft2 (386 g/m2)
  • Standard Resin Content: 50% by weight
  • Standard Tack: Medium
  • Cured Ply Thickness: 0.007” (0.178 mm)
  • Other Weights, Resin Contents, and Fabrics are Available.
 Flammability
  • A flame retardant version is available L933FR
 Availability
  • Up to 60” width in rolls up to 60 yards long (152 cm x 55 m)
Shelf Life
  • 6 months at 40°F (4°C) or below
  • 14 days at Room Temperature (70°F or 21°C)
Cure Cycles
  • 60 minutes at 250-275°F (121-135°C) with 50 PSI (0.34 MPa) minimum
  • Vacuum bag/oven cures are acceptable for many applications.
Click For Page 2

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.

 
       
Website Copyright 1996-2008 by J.D. Lincoln Inc.
A Member of the Umeco Plc Group.