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8387742 
Journal Article 
Synthesis and Characterization of Reactive-Phosphorus/Nitrogen Flame Retardant for Epoxy Resin 
Sim, MinJi; Cha, SHo; , 
2019 
1 
Polymer - Korea
ISSN: 0379-153X 
POLYMER SOC KOREA 
SEOUL 
204-210 
WOS:000464090300005 
A phosphorus/nitrogen-containing flame retardant (PNFR) with amine end groups was synthesized and then applied to epoxy resin as reactive-type flame retardant. The chemical structure and applicability of reactive flame retardant of PNFR were confirmed via H-1 NMR and DSC, respectively. From LOI and UL 94 test, all of the flame retarded epoxy resins showed relatively a larger LOI value and V-0 rating compared with neat epoxy resin. These results implied that PNFR has the condensed-phase flame retardant mechanism for epoxy resin. However, with increasing the amount of PNFR, thermal stability and flame retardancy of epoxy resin were relatively decreased due to the decrease of cross-linking density and amount of charring agent of flame retarded epoxy resin.