Phthalonitrile Blends: Simple Way to Improve Physical Properties by Increasing Crosslinking Density
Abstract
A method to improve the mechanical properties of phthalonitrile (PN) resins at lower postcure temperatures is achieved by blending a second‐generation oligomeric aromatic ether ketone‐based PN resin with 1,1,1‐tris‐[4‐(3,4‐dicyanophenoxy)phenyl]ethane in varying concentrations. Most of the mixtures exhibit a single softening temperature indicating that the two resins are miscibile in one another at the respective concentrations. After various blends are thermally cured to several postcure temperatures yielding crosslinked polymers, the polymers demonstrate superb mechanical properties and thermooxidative stability at lower overall postcure temperatures.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 27, 2017
- Source ID
- 10.1002/macp.201700207
Entities
People
- Arianna Neal
- Jadah S. Clarke
- Matthew Laskoski
- Teddy M. Keller
Organizations
- Office of Naval Research
- United States Naval Research Laboratory