Accession Number:

ADA209121

Title:

Structural Characterization and Mechanics of Chopped Fiber and Molecular Composites

Descriptive Note:

Final rept. 1 Sep 1985-30 Apr 1989

Corporate Author:

AKRON UNIV OH POLYMER ENGINEERING CENTER

Personal Author(s):

Report Date:

1989-04-01

Pagination or Media Count:

7.0

Abstract:

The present study consists essentially two major parts i processing and orientation development of Kevlar fiber composites, and ii preparation and characterization of polyamide molecular composites. In the first part, it has been proposed to characterize the structure and orientation development of anisotropic particulates such as Kevlar chopped fibers, minerals, among others, in thermoplastic plastics. The effects of processing techniques and processing conditions on the fiber and matrix orientation have been established on the basis of the wide angle X-ray WAXD pole figure analysis. In the second part, various molecular composites have been prepared by mixing poly-p-phenylene terephthalamide PPTA and various nylons. Miscibility between PPTA and nylon. The phenomenon of phase segregation and its kinetics has been investigated for PPTA amorphous nylon mixtures. The melt rheology and mechanical behavior of PPTAnylon 6 and 66 molecular and particulate composites have been evaluated.

Subject Categories:

  • Laminates and Composite Materials
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE