Inorganic Cyanophosphine Rubbers
Abstract
The objective of this Karles Fellowship was to develop polymers stable to 400-500 deg C by utilizing cyanophosphine monomers with stable, aromatic substituents. New methods have been developed to deposit thin films of thermooxidatively robust polymerized P(CN)3 that act as hard thermosets. A new method for synthesizing monocyano- and dicyanophosphines of similar structure was developed, and several of these monomers were investigated for their ability to produce robust thermosets. Phenyl dicyanophosphine (PhP(CN)2) thermosets into a hard, thermooxidatively stable, monolithic material. The novel monomer bis(diphenylamino)cyanophosphine ((Ph2N)2PCN) thermosets in a promising, waxy, black solid, but exhibits poor thermal stability due to non-oxidative intramolecular elimination reactions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 08, 2022
- Accession Number
- AD1159275
Entities
People
- Brian L Chaloux
Organizations
- United States Naval Research Laboratory