Email RIS file
Bookmark
Report an Issue

NASA. Langley Research Center dry powder towpreg system

Author
Marchello, Joseph M.
Published
Apr 1, 1990.
Physical Description
1 electronic document
Additional Creators
Baucom, Robert M.
Online Version

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
Dry powder polymer impregnated carbon fiber tows were produced for preform weaving and composite materials molding applications. In the process, fluidized powder is deposited on spread tow bundles and melted on the fibers by radiant heating to adhere the polymer to the fiber. Unit design theory and operating correlations were developed to provide the basis for scale up of the process to commercial operation. Special features of the operation are the pneumatic tow spreader, fluidized bed, resin feeder, and quality control system. Bench scale experiments, at tow speeds up to 50 cm/sec, demonstrated that process variables can be controlled to produce weavable LARC-TPI carbon fiber towpreg. The towpreg made by the dry powder process was formed into unidirectional fiber moldings and was woven and molded into preform material of good quality.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19920013396.
Accession ID: 92N22639.
NASA-TM-102648.
NAS 1.15:102648.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15676212