Premium
Epoxy resins cured with aminophenylmethylphosphine oxide 1: Combustion performance
Author(s) -
Levchik Sergei V.,
Camino Giovanni,
Luda Maria Paola,
Costa Luigi,
Muller George,
Costes Bruno,
Henry Yves
Publication year - 1996
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/(sici)1099-1581(199611)7:11<823::aid-pat498>3.0.co;2-x
Subject(s) - intumescent , fire retardant , epoxy , materials science , curing (chemistry) , char , differential scanning calorimetry , oxide , bisphenol a , composite material , combustion , chemical engineering , polymer chemistry , organic chemistry , chemistry , metallurgy , physics , thermodynamics , engineering
The kinetics of curing tetraglycidyl 4,4′‐diaminodiphenyl methane (TGDDM) or of the mixture TGDDM/diglycidylether of bisphenol A (DGEBA) by bis(m‐aminophenyl)methylphosphine oxide (BAMPO) was studied using differential scanning calorimetry. At low advancement of curing (<50%), the low activation energy interaction between epoxy and amino groups seems to be controlled by diffusion, whereas above 50% the role of homopolymerization tends to increase and the process becomes chemically controlled. BAMPO shows a higher fire‐retardant effectiveness in the mixture TGDDM/DGEBA than in TGDDM or DGEBA alone, for which the oxygen and nitrous oxide index tests suggest a condensed phase or a gas phase fire‐retardant action depending on phosphorus content. An intumescent char is formed on the surface of burning fire‐retarded specimens which tends, however, to be oxidized, thus reducing the fire‐proofing effect at high BAMPO content.