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Synthesis of aminophosphonate polyols and polyurethane foams with improved fire retardant properties
Author(s) -
Borreguero Ana M.,
Velencoso María M.,
Rodríguez Juan F.,
Serrano Ángel,
Carrero M. José,
Ramos María J.
Publication year - 2019
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.47780
Subject(s) - fire retardant , polymerization , polyurethane , polymer chemistry , materials science , char , thermal stability , cone calorimeter , bulk polymerization , catalysis , chemical engineering , chemistry , polymer , organic chemistry , radical polymerization , composite material , combustion , engineering
Aminophosphonated polyols with flame retardant properties are synthesized by ring opening polymerization using diethyl‐N,N‐bis(2‐hydroxyethyl) aminomethyl phosphonate (Fyrol‐6) as initiator. The influence of the catalyst type and its concentration on the polymerization rate are studied. The catalyst system formed by potassium methoxide (MeOK) in DMSO as a solvent presents the highest polymerization rate and allows reducing the polydispersity. The thermal resistance of the synthesized polyols is confirmed by the char residues formation. Finally, PU foams are synthesized containing up to a 50 pph of PFyCs[1:1], preserving good cellular structure up to a 25 pph content and improving the fire resistance by increasing the char residue from 7.79 to 22.13 wt % and decreasing the PHRR and the smoke production according to TGA and cone calorimeter tests, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47780.