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Effects of postcuring on mechanical properties of pultruded fiber-reinforced epoxy composites and the neat resinThe effects of postcuring on mechanical properties of pultruded fiber-reinforced epoxy-resin composites have been investigated. Composites with carbon, glass, and aramid reinforcement fibers were individually studied. The epoxy was a commercially-available resin that was especially developed for pultrusion fabrication. The pultrusions were conducted at 400 F with postcures at 400, 450, 500, and 550 F. Measurements of the flexural, shear, and interlaminar fracture-toughness properties showed that significant postcuring can occur during the pultrusion process. All three mechanical properties were degraded by the higher (500 and 550 F) temperatures; photomicrographs suggest that the degradation was caused at the fiber-resin interface for all three fiber types.
Document ID
19890050536
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Long, Edward R., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Long, Sheila Ann T.
(NASA Langley Research Center Hampton, VA, United States)
Funk, Joan G.
(NASA Langley Research Center Hampton, VA, United States)
Collins, William D.
(NASA Langley Research Center Hampton, VA, United States)
Gray, Stephanie L.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: SAMPE Quarterly
Volume: 20
ISSN: 0036-0821
Subject Category
Composite Materials
Accession Number
89A37907
Distribution Limits
Public
Copyright
Other

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