Development of High Temperature Polyimide Systems for High Performance Aircraft Structural Applications.

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Abstract:

The Fusible Film Process was demonstrated successfully in producing high quality boron-polyimide broadgoods, 24 inches wide by 88 inches long, both with and without a 104 glass scrim. The properties of the Skybond 704 film forming resin and the boron reinforcement were characterized. The scrim improved the handleability of the prepreg, reduced the width shrinkage to less than 1 IN OVEN STAGING AND INCREASED THE TRANSVERSE TENSILE AND FLEXURE PROPERTIES OF LAMINATES AT ROOM TEMPERATURE AND 550 F substantially. Excellent composition control was achieved in the prepreg and maintained in the laminates. Low void contents were achievedby oven staging the prepreg to a nominal 3 12 wo volatiles prior to consolidation. Void contents of 2 1 were achieved in laminates made without scrim by consolidation at 450 F for 3 hours at 100 psig. Author, modified-PL

Author(s):
Johnson, Robert D. ; Linebarier, Harvey L. ; Speakman, Lyman A. ; Reynolds, Donald T.
Author Organization(s):
NORTHROP CORP NEWBURY PARK CA VENTURA DIV
Descriptive Note:
Summary technical rept. 15 May 70-15 Mar 71,
Pagination:
0189

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NVR-6622-9, AFML-TR-71-91
Contract/Grant Number(s):
F33615-70-C-1547
Project Number(s):
AF-6169CW
Monitor Series:
TR-71-91
 Subject Terms
Communities of Interest:
Materials and Manufacturing Processes
Descriptor(s):
(*REINFORCED PLASTICS, MANUFACTURING), (*LAMINATED PLASTICS, MANUFACTURING), (*BORON, REINFORCING MATERIALS), FIBERS, FILAMENT WOUND CONSTRUCTION, MECHANICAL PROPERTIES, TENSILE PROPERTIES, HEAT RESISTANT MATERIALS, BONDING, GLASS TEXTILES, AGING(MATERIALS)
Field(s)/Group(s):
Refractory Fibers, Laminates and Composite Materials, Plastics
Keyword(s):
*BORON REINFORCED COMPOSITES, *BORON POLYIMIDE MATERIALS, *POLYIMIDE RESINS, SKYBOND 704 RESIN, S L change 8410
Report Date:
1971 May 15