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Synthesis of new flame‐retarding epoxy resin based on 3′, 5′, 3″, 5″‐tetrabromophenolphthalein
Author(s) -
Yang ChinPing,
Lee TzongMing
Publication year - 1987
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.1987.070340809
Subject(s) - epoxy , chemistry , epichlorohydrin , yield (engineering) , char , thermal decomposition , pyrolysis , nuclear chemistry , polymer chemistry , chemical engineering , organic chemistry , composite material , materials science , engineering
New flame‐retarding epoxy is synthesized by reacting 3′, 5′, 3Prime;, 5″‐tetrabromophenolphthalein (TBPP) with epichlorohydrin and characterized in comparison with commercially available tetrabromobisphenol‐A(TBBA) epoxy on their flame retardancy and thermostability. TBPP epoxy show better results in promoting flame resistance than TBBA epoxy. However, TBPP epoxy exhibits a greater effect on thermal decomposition temperature. The order of char yield at 800°C under nitrogen for the cured products is TBPP epoxy > phenolphthalein (PP) epoxy > TBBA epoxy. Meanwhile, there is a linear relationship between oxygen index and char yield for cured products of TBPP‐PP epoxy and TBBA‐BA epoxy systems.