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New star‐shaped phosphorus‐containing flame retardants based on acrylates for epoxy resins
Author(s) -
Müller Patrick,
Bykov Yana,
Döring Manfred
Publication year - 2013
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3151
Subject(s) - diphenylphosphine oxide , epoxy , differential scanning calorimetry , materials science , thermogravimetric analysis , glass transition , metaphosphate , phosphinate , char , phosphorus , fluorene , polymer chemistry , yield (engineering) , fire retardant , nuclear chemistry , organic chemistry , composite material , polymer , phosphate , pyrolysis , chemistry , physics , metallurgy , thermodynamics
New star‐shaped phosphorus‐containing flame retardants were synthesized by phospha‐Michael‐addition of diphenylphosphine oxide and dimethyl phosphite to oligofunctional acrylates. The products were examined via UL 94 V‐rating and thermogravimetric analysis in three different epoxy resin systems compared to the recently described correspondent derivatives based on the phosphinate‐type 6‐oxido‐6H‐dibenzo[c,e][1,2]oxaphosphinine. The influence of a systematically altered chemical environment of the phosphorus atom on the flame retardancy and the char yield was investigated. Furthermore, the glass transition temperatures of the modified resins were studied via differential scanning calorimetry, including the deviation after an additional treatment at elevated temperature. Copyright © 2013 John Wiley & Sons, Ltd.