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Preparation and properties of composites based on melamine‐formaldehyde foam and nano‐Fe 3 O 4
Author(s) -
Zhang Yusen,
Duan Hongdong,
Wang Xingjian,
Meng Xia,
Qin Dawei
Publication year - 2013
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.39514
Subject(s) - materials science , fire retardant , composite material , melamine , blowing agent , formaldehyde , melamine resin , thermogravimetry , curing (chemistry) , polyurethane , fourier transform infrared spectroscopy , nanoparticle , chemical engineering , organic chemistry , chemistry , engineering , coating , nanotechnology
In this work, a novel melamine‐formaldehyde‐Fe 3 O 4 foam was prepared from a mixture containing melamine‐ethanolamine‐formaldehyde resin, melamine‐glycol‐formaldehyde resin and carboxylated Fe 3 O 4 nanoparticles by microwave foaming method. The two resins were characterized by 13 C‐NMR, respectively. The structures of foams, mechanical and fire‐retardant properties were experimentally characterized separately by scanning electron microscopy, universal testing machine, limit oxygen index, thermogravimetry‐differential thermal analysis, and Fourier transform infrared spectra. The effects of the resin viscosity, emulsifier, nucleating agent, curing agent, silicone oil, microwave heating time and blowing agent on the structure of foam were investigated. Results showed that the properties of foam were decided by not only the molecular structure but also structure of foam, and the carboxylated Fe 3 O 4 nanoparticles can improve the toughness and flame retardant properties of magnetic foam obviously from both aspects. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2688–2697, 2013