Failure Behavior of PEEK and Its Short-Fiber Composite Systems
Abstract
The development of microstructure in PEEK and its short-fiber composites and the effects of such microstructure on mechanical failure were studied. A small-scale injection-molding machine installed in an x-ray diffractometer, was used to follow the development of crystallinity. For neat polymer, increasing the rate of injection increased the crystallization rate. Fibers sometimes slowed crystallization, due to polymer relaxation between the fibers. Fracture behavior in oriented PEEK was found to be highly anisotropy in the elastic modulus. Spherulite size was controlled by self-seeding. The fracture toughness was sound to increase with spherulite size.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 12, 1989
- Accession Number
- ADA210729
Entities
People
- Jerold M. Schultz
Organizations
- University of Delaware