NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Vacuum Powder InjectorMethod developed to provide uniform impregnation of bundles of carbon-fiber tow with low-solubility, high-melt-flow polymer powder materials to produce composite prepregs. Vacuum powder injector expands bundle of fiber tow, applies polymer to it, then compresses bundle to hold powder. System provides for control of amount of polymer on bundle. Crystallinity of polymer maintained by controlled melt on takeup system. All powder entrapped, and most collected for reuse. Process provides inexpensive and efficient method for making composite materials. Allows for coating of any bundle of fine fibers with powders. Shows high potential for making prepregs of improved materials and for preparation of high-temperature, high-modulus, reinforced thermoplastics.
Document ID
19910000547
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Working, Dennis C.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 14, 2013
Publication Date
October 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 10
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
LAR-14179
Accession Number
91B10547
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available