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Poly(butylene terephthalate) fire retarded by 1,4-diisobutylene-2,3,5,6-tetraxydroxy-1, 4-diphosphine oxide. I. Combustion and thermal decomposition

✍ Scribed by W. Aufmuth; S.V. Levchik; G.F. Levchik; M. Klatt

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 113 KB
Volume: 23
Category: Article
ISSN: 0308-0501
DOI: 10.1002/(sici)1099-1018(199901/02)23:1<1::aid-fam660>3.0.co;2-k

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✦ Synopsis

Diisobutylene-2,3,5,6-tetraxydroxy-1,4-diphosphine oxide (Cyagard) provides good 5re retardant performance for poly(butylene terephthalate) (PBT) as measured by the UL94 test whereas the combination of Cyagard with some co-additives helps to increase the limiting oxygen index (LOI). A correlation between the solid residue measured by thermogravimetry and LOI was observed. Kinetic analysis of the thermogravimetric data showed a strong increase in the activation energy of the thermal decomposition of PBT in the presence of Cyagard and ferric oxide.