A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins

Abstract A hyperbranched phosphorus-containing copper phthalocyanine compound (DOPO-CuPc) was successfully synthesized and used as the flame-retardant additive to prepare flame-retarded epoxy thermosets. The addition of DOPO-CuPc led to a significant enhancement of the flame retardant properties of...

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Autores principales:	Penglun Zheng, Rui Wang, Donghui Wang, Xiaoliang Peng, Yang Zhao, Quanyi Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c1665b823b7f4006abda7e64310edb1f
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spelling	oai:doaj.org-article:c1665b823b7f4006abda7e64310edb1f2021-12-02T14:58:46ZA phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins10.1038/s41598-021-96927-y2045-2322https://doaj.org/article/c1665b823b7f4006abda7e64310edb1f2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96927-yhttps://doaj.org/toc/2045-2322Abstract A hyperbranched phosphorus-containing copper phthalocyanine compound (DOPO-CuPc) was successfully synthesized and used as the flame-retardant additive to prepare flame-retarded epoxy thermosets. The addition of DOPO-CuPc led to a significant enhancement of the flame retardant properties of the epoxy resin. The 15DOPO-CuPc/EP composite obtained a LOI value of 35.8%, and the UL-94 rose from NR to V-0 rating. And the addition of DOPO-CuPc resulted in early decomposition of the epoxy thermoset, but the residual char at 700 °C reached 27.7%. The flame retardant mechanism was further investigated. It was found that DOPO-CuPc could release phosphorus-containing radicals and non-combustible gases in the gas phase to exert gas-phase flame retardant activity. In the condensed phase, the epoxy thermoset formed the expanded honeycomb-like char layer during combustion and the presence of copper phthalocyanine contributed to the stability of the char layer.Penglun ZhengRui WangDonghui WangXiaoliang PengYang ZhaoQuanyi LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Penglun Zheng Rui Wang Donghui Wang Xiaoliang Peng Yang Zhao Quanyi Liu A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
description	Abstract A hyperbranched phosphorus-containing copper phthalocyanine compound (DOPO-CuPc) was successfully synthesized and used as the flame-retardant additive to prepare flame-retarded epoxy thermosets. The addition of DOPO-CuPc led to a significant enhancement of the flame retardant properties of the epoxy resin. The 15DOPO-CuPc/EP composite obtained a LOI value of 35.8%, and the UL-94 rose from NR to V-0 rating. And the addition of DOPO-CuPc resulted in early decomposition of the epoxy thermoset, but the residual char at 700 °C reached 27.7%. The flame retardant mechanism was further investigated. It was found that DOPO-CuPc could release phosphorus-containing radicals and non-combustible gases in the gas phase to exert gas-phase flame retardant activity. In the condensed phase, the epoxy thermoset formed the expanded honeycomb-like char layer during combustion and the presence of copper phthalocyanine contributed to the stability of the char layer.
format	article
author	Penglun Zheng Rui Wang Donghui Wang Xiaoliang Peng Yang Zhao Quanyi Liu
author_facet	Penglun Zheng Rui Wang Donghui Wang Xiaoliang Peng Yang Zhao Quanyi Liu
author_sort	Penglun Zheng
title	A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
title_short	A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
title_full	A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
title_fullStr	A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
title_full_unstemmed	A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
title_sort	phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c1665b823b7f4006abda7e64310edb1f
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A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins

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