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Open AccessArticle

Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites

by 1,2,†, 3,†, 2,3,*, 3, 2 and 1,*
1
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
2
Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
3
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to the work.
Polymers 2020, 12(3), 613; https://doi.org/10.3390/polym12030613
Received: 31 December 2019 / Revised: 29 January 2020 / Accepted: 7 February 2020 / Published: 7 March 2020
(This article belongs to the Special Issue Processing and Molding of Polymers)
In this work, functionalized multi-walled carbon nanotubes (MWCNT) were synthesized by the reaction between acylated MWCNT and 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB). The obtained MWCNT-ODOPB was well dispersed into epoxy resins together with aluminum diethylphosphinate (AlPi) to form flame-retardant nanocomposites. The epoxy resin nanocomposite with phosphorus content of 1.00 wt % met UL 94 V-0 rating, exhibited LOI value of 39.5, and had a higher Tg compared to neat epoxy resin, which indicates its excellent flame retardant performance. These experimental results indicated that MWCNT-ODOPB was a compatible and efficient flame retardant for epoxy resins. Moreover, cone calorimeter analysis showed that the peak heat release rate (pHRR), total heat release (THR) values, and CO2 production profiles of the composites decreased with an increase in the additional amount of phosphorus. View Full-Text
Keywords: epoxy resin; functionalized MWCNTs; DOPO; flame retardant; nanocomposites epoxy resin; functionalized MWCNTs; DOPO; flame retardant; nanocomposites
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MDPI and ACS Style

Gu, L.; Qiu, C.; Qiu, J.; Yao, Y.; Sakai, E.; Yang, L. Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites. Polymers 2020, 12, 613. https://doi.org/10.3390/polym12030613

AMA Style

Gu L, Qiu C, Qiu J, Yao Y, Sakai E, Yang L. Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites. Polymers. 2020; 12(3):613. https://doi.org/10.3390/polym12030613

Chicago/Turabian Style

Gu, Liqiang; Qiu, Chen; Qiu, Jianhui; Yao, Youwei; Sakai, Eiichi; Yang, Liting. 2020. "Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites" Polymers 12, no. 3: 613. https://doi.org/10.3390/polym12030613

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