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Flame retardancy of polybutylene terephthalate blended with various oxides
Author(s) -
Ishikawa Tomoyuki,
Ueno Tomonaga,
Watanabe Yusuke,
Mizuno Kohshiroh,
Takeda Kunihiko
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27170
Subject(s) - polybutylene terephthalate , flammability , cone calorimeter , thermogravimetric analysis , materials science , pyrolysis , flammable liquid , composite material , polymer chemistry , chemical engineering , char , organic chemistry , chemistry , polyester , engineering
The flame retardancy of polybutylene terephthalate (PBT) was studied focusing on the effect of various oxides. Thermo‐gravimetric analysis, pyrolysis/gas chromatography/mass spectrometry, and elemental analysis (EA) were used to analyze the flame retardancy, which were observed through the UL‐test and a cone calorimeter. Many oxides influenced the flame retardancy and some of them could suppress the flammability of PBT. In particular, the blended‐PBTs with ZnO and V 2 O 5 accelerated the degradation and the edges of oxygen consumption were shorter than neat‐PBT although the flammability became poorer. The quantitative analysis of the scission products and the results of EA showed that hydrolysis, successive dehydration, and other various reactions changed the scission route to generate less flammable products. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008