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L-552

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Laminating Prepreg, High Temperature

851 W. 18 Street Costa Mesa, CA 92627 (949) 650-8106 Fax:(949) 631-6190 www.jdlincoln.com

Product Data Sheet

Revised: 12/22/06

Description

L-552 is an excellent high temperature modified epoxy prepreg which exhibits outstanding performance at temperatures up to 400°F (204°C). L-552 is ideally suited for applications on lightweight advanced aircraft for fairings, inlet ducting, leading edges, control surfaces, pylons, and radomes. L-552 is moisture resistant and has excellent compatibility with graphite epoxy systems as a load transfer medium into adjacent metallic structure.

Advantages of L-552

L-552 has an excellent balance between toughness, high temperature strength, and weatherability. L-552 may be co-cured with many of today’s graphite/epoxy prepreg systems to form load transfer interfaces. L-552 is also supplied on lightweight fiberglass fabric for use as a surfacing ply for graphite/epoxy laminates and facesheets to improve their damage tolerance.

Physical Properties on 7781 Glass Fabric

Standard Weight: 0.095 lbs/ft² (464 g/m
2 ) Standard Resin Content: 36% by weight Volatile Content: Less than 0.5% 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 30 days at Room Temperature (70°F or 21°C)

Cure Cycles

60 minutes at 350°F (177°C) Optional Cure Cycles: 2 hours at 300°F (149°C), or 90 minutes at 325°F (163°C) L-552