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Microencapsulation of hydrophilic solid powder as a flame retardant with epoxy resin by using interfacial reaction method
Author(s) -
Takahashi Masanori,
Taguchi Yoshinari,
Tanaka Masato
Publication year - 2010
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.1410
Subject(s) - epoxy , fire retardant , materials science , hydrazine (antidepressant) , emulsion , chemical engineering , phase (matter) , composite material , nuclear chemistry , organic chemistry , chromatography , chemistry , engineering
Microencapsulation of Bistetrazol · diammonium (BHT · 2NH 3 ) as a hydrophilic powdery flame retardant was tried by the interfacial reaction method in reverse emulsion. In this microencapsulation method, water droplets containing BHT · 2NH 3 and hydrazine as gelation agent for epoxy resin were dispersed in the continuous phase of corn oil. When epoxy resin was added to the continuous phase, BHT · 2NH 3 as a core material was microencapsulated by the reaction of epoxy resin with hydrazine on the interface between the surface of water droplet and the continuous phase. The content of the core material from 70 to 85%, and the microencapsulation efficiency from 89 to ca 100% were able to be attained under the experimental conditions adopted here. Copyright © 2009 John Wiley & Sons, Ltd.