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Development of a silicon carbide sewing threadA silicon carbide (SiC) sewing thread has been designed which consists of a two-ply yarn in a 122 turns-per-meter-twist construction. Two processing aids in thread construction were evaluated. Prototype blankets were sewn using an SiC thread prepared either with polytetrafluoroethylene sizing or with an overwrap of rayon/dacron service yarn. The rayon/dacron-wrapped SiC thread was stronger, as shown by higher break-strength retention and less damage to the outer-mold-line fabric. This thread enables thermal protection system articles to be sewn or joined, or have perimeter close-out of assembled parts when using SiC fabric for high-temperature applications.
Document ID
19890061397
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sawko, Paul M.
(NASA Ames Research Center Moffett Field, CA, United States)
Vasudev, Anand
(San Jose State University CA, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1989
Publication Information
Publication: SAMPE Quarterly
Volume: 20
ISSN: 0036-0821
Subject Category
Nonmetallic Materials
Accession Number
89A48768
Distribution Limits
Public
Copyright
Other

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