A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin

Hexaphenoxycyclotriphosphazene (HPCP) is a common flame retardant for epoxy resin (EP). To improve the thermostability and fire safety of HPCP-containing EP, we combined UiO66-NH<sub>2</sub> (a kind of metal-organic frame, MOF) with halloysite nanotubes (HNTs) by hydrothermal reaction to...

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Autores principales:	Jiawei Jiang, Siqi Huo, Yi Zheng, Chengyun Yang, Hongqiang Yan, Shiya Ran, Zhengping Fang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	epoxy resin Hexaphenoxycyclotriphosphazene metal-organic frame halloysite nanotubes flame retardancy mechanical properties Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/8dd22b4665e546249291783925fc5fac
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spelling	oai:doaj.org-article:8dd22b4665e546249291783925fc5fac2021-11-11T18:42:44ZA Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin10.3390/polym132136482073-4360https://doaj.org/article/8dd22b4665e546249291783925fc5fac2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3648https://doaj.org/toc/2073-4360Hexaphenoxycyclotriphosphazene (HPCP) is a common flame retardant for epoxy resin (EP). To improve the thermostability and fire safety of HPCP-containing EP, we combined UiO66-NH<sub>2</sub> (a kind of metal-organic frame, MOF) with halloysite nanotubes (HNTs) by hydrothermal reaction to create a novel synergistic flame retardant (H-U) of HPCP for EP. For the EP containing HPCP and H-U, the initial decomposition temperature (<i>T</i><sub>5%</sub>) and the temperature of maximum decomposition rate (<i>T</i><sub>max</sub>) increased by 11 and 17 °C under nitrogen atmosphere compared with those of the EP containing only HPCP. Meanwhile, the EP containing HPCP and H-U exhibited better tensile and flexural properties due to the addition of rigid nanoparticles. Notably, the EP containing HPCP and H-U reached a V-0 rating in UL-94 test and a limited oxygen index (LOI) of 35.2%. However, with the introduction of H-U, the flame retardant performances of EP composites were weakened in the cone calorimeter test, which was probably due to the decreased height of intumescent residual char.Jiawei JiangSiqi HuoYi ZhengChengyun YangHongqiang YanShiya RanZhengping FangMDPI AGarticleepoxy resinHexaphenoxycyclotriphosphazenemetal-organic framehalloysite nanotubesflame retardancymechanical propertiesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3648, p 3648 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	epoxy resin Hexaphenoxycyclotriphosphazene metal-organic frame halloysite nanotubes flame retardancy mechanical properties Organic chemistry QD241-441
spellingShingle	epoxy resin Hexaphenoxycyclotriphosphazene metal-organic frame halloysite nanotubes flame retardancy mechanical properties Organic chemistry QD241-441 Jiawei Jiang Siqi Huo Yi Zheng Chengyun Yang Hongqiang Yan Shiya Ran Zhengping Fang A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
description	Hexaphenoxycyclotriphosphazene (HPCP) is a common flame retardant for epoxy resin (EP). To improve the thermostability and fire safety of HPCP-containing EP, we combined UiO66-NH<sub>2</sub> (a kind of metal-organic frame, MOF) with halloysite nanotubes (HNTs) by hydrothermal reaction to create a novel synergistic flame retardant (H-U) of HPCP for EP. For the EP containing HPCP and H-U, the initial decomposition temperature (<i>T</i><sub>5%</sub>) and the temperature of maximum decomposition rate (<i>T</i><sub>max</sub>) increased by 11 and 17 °C under nitrogen atmosphere compared with those of the EP containing only HPCP. Meanwhile, the EP containing HPCP and H-U exhibited better tensile and flexural properties due to the addition of rigid nanoparticles. Notably, the EP containing HPCP and H-U reached a V-0 rating in UL-94 test and a limited oxygen index (LOI) of 35.2%. However, with the introduction of H-U, the flame retardant performances of EP composites were weakened in the cone calorimeter test, which was probably due to the decreased height of intumescent residual char.
format	article
author	Jiawei Jiang Siqi Huo Yi Zheng Chengyun Yang Hongqiang Yan Shiya Ran Zhengping Fang
author_facet	Jiawei Jiang Siqi Huo Yi Zheng Chengyun Yang Hongqiang Yan Shiya Ran Zhengping Fang
author_sort	Jiawei Jiang
title	A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
title_short	A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
title_full	A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
title_fullStr	A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
title_full_unstemmed	A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin
title_sort	novel synergistic flame retardant of hexaphenoxycyclotriphosphazene for epoxy resin
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8dd22b4665e546249291783925fc5fac
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A Novel Synergistic Flame Retardant of Hexaphenoxycyclotriphosphazene for Epoxy Resin

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