NDLI: Aluminum–organophosphorus hybrid nanorods for simultaneously enhancing the flame retardancy and mechanical properties of epoxy resin

Content Provider	Royal Society of Chemistry (RSC)
Author	Jiajun, Ma Yawen, Huang Ke, Cao Junxiao, Yang
Copyright Year	2012
Abstract	New aluminum–organophosphorus hybrid nanorods (AOPH-NR) have been prepared by reacting aluminum hydroxide (ATH) with dibenzylphosphinic acid (DBPA) with aluminum hydroxide (ATH) and used to prepare nanocomposites with epoxy resin. In order to determine the structure–property relationship of these composites, several other phosphinic acids of the general formula (R(CH2)n)2POOH (R = ester, allyl, nitrile, n = 1 or 2), and corresponding AOPHs were synthesized. FTIR, Raman, TGA, and XRD examinations showed that only AOPH-NR possesses a highly hybrid structure and high thermostability. SEM and TEM confirmed the nanorod morphology of AOPH-NR. The formation mechanism can be described as a decomposing–reforming process. This characteristic causes AOPH-NR to exhibit superior properties. Limiting oxygen index (LOI) determination and cone calorimeter analysis showed that the incorporation of only 4.25 wt% AOPH-NR remarkably improved the LOI value to as much as 28.0 and led to a 23% reduction in peak heat release rate (PHRR). Dynamic mechanical analysis (DMA) indicated that the mechanical properties of epoxy resin were also improved by incorporating AOPH-NR. In this way, the aluminum–organophosphorus hybridization via reacting ATH with specific organophosphinic acids shows promise as a means of improving flame retardancy and mechanical properties simultaneously. The thermal and anti-flaming properties of composites, combined with the properties of AOPHs, allowed us to discover the important role that the release and migration of phosphorus species plays in fire-retarding materials. This provides a new insight into the design of high-performance flame retardants.
Starting Page	2007
Ending Page	2017
Page Count	11
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	5
Journal	Journal of Materials Chemistry
DOI	10.1039/c1jm13332b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	FTIR DMA Raman Aluminium hydroxide Carboxylic acid Epoxy Resin Hypophosphorous acid Ester Allyl group Nitrile X-ray crystallography Thermostability Transmission electron microscopy Nucleophile League of Ireland Cone calorimeter Dynamic mechanical analysis Dimethylacetamide Flame retardant Phosphorus
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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