Phosphorus-nitrogen containing fire retardants for poly(butylene terephthalate)

Autor:	G. F. Levchik, Sergei V. Levchik, Alexander I Balabanovich, Yury V. Grigoriev, Martin Klatt
Rok vydání:	2000
Předmět:	Materials science Polymers and Plastics Phosphorus Organic Chemistry chemistry.chemical_element Thermogravimetry chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Urea Imide Melamine Phosphoric acid Phosphazene Fire retardant
Zdroj:	Polymer International. 49:1095-1100
ISSN:	1097-0126 0959-8103
DOI:	10.1002/1097-0126(200010)49:10<1095::aid-pi405>3.0.co;2-b
Popis:	Hexakis(phenylamino)cyclotriphosphazene, hexakis(phenoxy)cyclotriphosphazene, tris(o-phenylenediamino)cyclotriphosphazene, tris(phenylene-1,2-dioxy)cyclotriphosphazene and tris (phenylene-1-amino-2-oxy)cyclotriphosphazene have been prepared and characterized by IR and NMR spectroscopy. Phospham, a crosslinked phosphazene imide (PN 2 H) n , was prepared by heating hexaminotricyclophosphazene under vacuum. Phosphorus oxynitride (PON) m which is likely to be a crosslinked oxyphosphazene was prepared by intense heating of urea, melamine and phosphoric acid. These phosphorus-nitrogen containing compounds added to poly(butylene terephthalate) (PBT) at 10-20wt% provided increase of oxygen index (OI) from 22 to 29. In spite of relatively high OI only the V-2 rating was observed in the UL94 test because of the flaming drip phenomenon. Phosphorus oxynitride was found to be an efficient char promoter for PBT.
Databáze:	OpenAIRE
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