Benzotriazole-based conjugated microporous polymers as efficient flame retardants with better thermal insulation properties

doi:10.1039/c7ta11283a

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	Benzotriazole-based conjugated microporous polymers as efficient flame retardants with better thermal insulation properties
	Wei, Huijuan 1; Wang, Fei 1; Sun, Hanxue 1; Zhu, Zhaoqi 1; Xiao, Chaohu 2; Liang, Weidong 2; Yang, Baoping 1; Chen, Lihua 1,2; Li, An 1
刊名	Journal of Materials Chemistry A
	2018
卷号	6 期号:18 页码:8633-8642
关键词	Conjugated polymers Flame retardants Heat transfer Microporosity Rigid structures Thermal conductivity
ISSN号	20507488
DOI	10.1039/c7ta11283a
英文摘要	The development of high performance flame retardant materials with better thermal insulation properties is of great importance for saving energy in modern building construction. Herein, we report for the first time the synthesis of novel conjugated microporous polymers (CMPs) using monomers containing a benzotriazole moiety as building blocks via Sonogashira-Hagihara cross-coupling polymerization. The synthesized ZCMPs show high thermal stability with a decomposition temperature above 330 °C and high specific surface area up to 691 m2 g-1. The resulting CMP samples possess excellent flame retardancy with a peak heat release rate (pHRR) as low as 9.9 W g-1, which is nearly one order of magnitude lower than those of many traditional polymeric flame retardants reported previously. Also, they also show better thermal insulation properties with a thermal conductivity of ca. 0.03 W m-1 K-1 in air. More importantly, the introduction of a benzotriazole moiety into CMPs could generate nitrogen (a "green" gas compared with many flame retardants) to produce a flame-retardant effect. In addition, the rigid porous structure of CMPs could nearly remain to form a carbon layer as a barrier to block oxygen, mass, and heat transfer to the substrate when it undergoes high temperature treatment. Considering the advantages mentioned above, CMPs may hold great potential for future thermal insulation and flame retardant applications. © 2018 The Royal Society of Chemistry.
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	Royal Society of Chemistry
WOS记录号	WOS:000434624800055
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151203]
专题	设计艺术学院石油化工学院图书馆
作者单位	1.College of Petrochemical Technology, School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Experimental Center, Northwest University for Nationalities, Lanzhou; 730030, China
推荐引用方式 GB/T 7714	Wei, Huijuan,Wang, Fei,Sun, Hanxue,et al. Benzotriazole-based conjugated microporous polymers as efficient flame retardants with better thermal insulation properties[J]. Journal of Materials Chemistry A,2018,6(18):8633-8642.
APA	Wei, Huijuan.,Wang, Fei.,Sun, Hanxue.,Zhu, Zhaoqi.,Xiao, Chaohu.,...&Li, An.(2018).Benzotriazole-based conjugated microporous polymers as efficient flame retardants with better thermal insulation properties.Journal of Materials Chemistry A,6(18),8633-8642.
MLA	Wei, Huijuan,et al."Benzotriazole-based conjugated microporous polymers as efficient flame retardants with better thermal insulation properties".Journal of Materials Chemistry A 6.18(2018):8633-8642.