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. |
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