Accession Number:

AD0894712

Title:

Development of a Method and Apparatus for Spinning a Yarn of High Modulus Fibers

Descriptive Note:

Corporate Author:

MONSANTO RESEARCH CORP ST LOUIS MO

Personal Author(s):

Report Date:

1972-04-01

Pagination or Media Count:

65.0

Abstract:

A two-slurry vortex spinning process was developed for spinning a yarn of aligned high modulus core fibers wrapped with helically twisted fibers of the same or lower modulus. Yarn was formed at the entry to the rotating tube of the spinning assembly as the annular fiber suspension twisted around the more viscous core slurry. The rotating tube generated an axial vorticity gradient within the suspension, and the resulting hydrodynamic force twisted the outer fiber layer. Yarn was spun consisting of chopped glass in the core and wrapping positions glass as the core wrapped with synthetic textile fibers long staple beta-silicon carbide whiskers wrapped with glass and synthetic fibers. The operating limits for spinning yarn with the apparatus were determined. Fiber reinforced epoxy composites were formed using yarn spun with the vortex device. The mechanical properties were comparable to values obtained on extruded discontinuous fiber composites.

Subject Categories:

  • Laminates and Composite Materials
  • Textiles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE