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Improved compression molding technology for continuous fiber reinforced composite laminates. Part 2 : AS-4/Polyimidesulfone prepreg system

Author:
Baucom, Robert M.
Published:
Oct 1, 1991.
Physical Description:
1 electronic document
Additional Creators:
Hou, Tan-Hung, Kidder, Paul W., and Reddy, Rakasi M.
Online Version

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Summary:
AS-4/polyimidesulfone (PISO2) composite prepreg was utilized for the improved compression molding technology investigation. This improved technique employed molding stops which advantageously facilitate the escape of volatile by-products during the B-stage curing step, and effectively minimize the neutralization of the consolidating pressure by intimate interply fiber-fiber contact within the laminate in the subsequent molding cycle. Without the modifying the resin matrix properties, composite panels with both unidirectional and angled plies with outstanding C-scans and mechanical properties were successfully molded using moderate molding conditions, i.e., 660 F and 500 psi, using this technique. The size of the panels molded were up to 6.00 x 6.00 x 0.07 in. A consolidation theory was proposed for the understanding and advancement of the processing science. Processing parameters such as vacuum, pressure cycle design, prepreg quality, etc. were explored.
Other Subject(s):
Collection:
NASA Technical Reports Server (NTRS) Collection.
Note:
Document ID: 19920001989.
Accession ID: 92N11207.
NAS 1.15:104133.
NASA-TM-104133.
Terms of Use and Reproduction:
No Copyright.
View MARC record | catkey: 15678668