Systematic differential scanning calorimetry studies of the cure of carbon fiber - epoxy composite prepregs

Conference · Tue Nov 01 04:00:00 EST 1983

OSTI ID:5336277

Walkup, C M; Morgan, R J; Hoheisel, T H

High performance C fiber-epoxy composite laminates are fabricated from uncured C fiber-epoxy prepreg material. Diaminodiphenyl sulfone (DDS) cured tetraglycidyl 4,4' diaminodiphenyl methane (TGDDM) epoxies, whose cure reactions are accelerated by BF/sub 3/:amine catalysts, are the most common composite matrices utilized in these high performance composites. To process reproducible composites requires an understanding of the cure reactions and how these reactions are modified by the BF/sub 3/:amine catalysts. In this paper we report systematic differential scanning calorimetry (DSC) studies of the constituents of BF/sub 3/:NH/sub 2/C/sub 2/H/sub 5/ catalyzed TGDDM-DDS epoxies and their mixtures; the effect of BF/sub 3/:NH/sub 2/C/sub 2/H/sub 5/ concentration on the cure reactions; the nature of the catalyzed cure reactions and the environmental sensitivity of the catalyst. DSC studies are also reported on the cure reaction characteristics and environmental sensitivity of commercial C fiber-TGDDM-DDS epoxy prepregs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5336277
• Report Number(s): UCRL-89970; CONF-840415-3; ON: DE84002680
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360301* -- Composite Materials-- Preparation & Fabrication-- (-1987)
AMINES
BORON COMPOUNDS
BORON FLUORIDES
CALORIMETRY
CARBON
CATALYSIS
COMPOSITE MATERIALS
CURING
ELEMENTS
EPOXIDES
FIBERS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS