Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy

doi:10.1016/j.jcis.2021.12.138

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy
	Zhu, Zhaoqi; Niu, Ye; Wang, Shuo; Su, Min; Long, Yong; Sun, Hanxue; Liang, Weidong; Li, An
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2022-04-15
卷号	612 页码:35-42
关键词	Chitosan Magnesium hydroxide Hollow glass microspheres Thermal insulation Flame-retardant
ISSN号	0021-9797
DOI	10.1016/j.jcis.2021.12.138
英文摘要	The development of an environmental-friendly thermal insulation and flame retardant material has attracted widespread attention in modern architecture. In this work, a kind of novel aerogel composites were prepared by incorporation of Mg(OH)(2) coated hollow glass microspheres (HGM) into chitosan (CSA) matrix and then cross-linking by glutaraldehyde (abbreviated as CSA-HGM-Mg(OH)(2)). The as-prepared composite aerogel exhibits vertical directional channel with high porosity and excellent thermal insulation with a low thermal conductivity of 0.035 Wm (1) k (1). Besides, it shows excellent flame retardancy with a high limit oxygen index (LOl) value up to 50.8, which is one of the highest values among the most of flame retardants reported previously. Also, a very low peak heat release rate (pHRR) of 24.12 kW m (2) was obtained which makes the aerogel composite reaching UL-94 V-0 rating. Such results may be attributed to a synergy effect by combination of its abundantly porous structure derived from HGM to give a better thermal insulation and excellent nonflammability of CSA and Mg(OH)(2) to offer a superior flame retardancy. Taking advantages of its high mechanical strength, low cost materials, simple and scalable preparation method, CSA-HGM-Mg(OH)(2) aerogel composites may hold great potential for future thermal insulation and flame retardant applications. (C) 2021 Elsevier Inc. All rights reserved.
WOS研究方向	Chemistry
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000750601300004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154765]
专题	石油化工学院电气工程与信息工程学院
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Langongping Rd 287, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Zhaoqi,Niu, Ye,Wang, Shuo,et al. Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2022,612:35-42.
APA	Zhu, Zhaoqi.,Niu, Ye.,Wang, Shuo.,Su, Min.,Long, Yong.,...&Li, An.(2022).Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy.JOURNAL OF COLLOID AND INTERFACE SCIENCE,612,35-42.
MLA	Zhu, Zhaoqi,et al."Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy".JOURNAL OF COLLOID AND INTERFACE SCIENCE 612(2022):35-42.