Synthesis of Phosphonitrilic Plastics and Elastomers for Marine Applications
Technical rept. on Part 1 (Final), 5 Jul 1971-4 Nov 1972
HORIZONS RESEARCH INC CLEVELAND OH
Pagination or Media Count:
Osphonitrile chlorides, polymerization, phosphorus compounds, thermoplastic resins, plastic coatings, electrical properties, deterioration, copolymerization, halocarbon plastics, solvent action, chlorine compounds, bromine compounds, filmschemical attackdegradation, resistance, phosphazene, phosphonitrilic plastics, smokeEleven different, flame-retardant, relatively inexpensive polyaryloxy- phosphazenes were prepared. The polyaryloxphosphazenes displayed high flame retardancy in the unfilled, uncured state. Limiting Oxygen Index values varied from 27 to 33 for nonhalogenated materials and from 38 to 65 for halogenated materials. The three polyaryloxyphosphazenes tested performed very well in the NBS smoke test and the National Electrical Manufacturers test ASTM D229. Dielectric properties compared favorably with polyvinyl chloride and polyethylene. Ten of the materials were plastics which were good film formers and most films were flexible, strong and oriented upon drawing. The polyalkylaryl- oxphosphazenes had wider solubility than the polyhaolaryloxyphosphazenes. In general, the polymers showed good chemical resistance to acids and bases.
- Polymer Chemistry