Nanosheet-coated synthetic wood with enhanced flame-retardancy by vacuum-assisted sonocoating technique  

作　　者：Zhi-Yuan Ma Xiao-Feng Pan Ze-Lai Xu Zhi-Long Yu Bing Qin Yi-Chen Yin Yu-Cheng Gao Shu-Hong Yu 

机构地区：[1]Department of Chemistry,Institute of Biomimetic Materials&Chemistry,Anhui Engineering Laboratory of Biomimetic Materials,Division of Nanomaterials&Chemistry,Hefei National Laboratory for Physical Sciences at the Microscale,Institute of Energy,Hefei Comprehensive National Science Center,University of Science and Technology of China,Hefei 230026,China [2]Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China

出　　处：《Nano Research》2022年第10期9440-9446,共7页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51732011,U1932213,and 22005290);the National Basic Research Program of China(No.2021YFA0715700);the National Key Research and Development Program of China(No.2018YFE0202201);Science and Technology Major Project of Anhui Province(No.201903a05020003);the University Synergy Innovation Program of Anhui Province(No.GXXT-2019-028);the Hefei Municipal Natural Science Foundation(No.2021024).Z.Y.M.acknowledges the funding support by China Postdoctoral Science Foundation(No.2021TQ0317);the Fundamental Research Funds for the Central Universities(No.WK2060000049).

摘　　要：Compared to natural woods,synthetic woods have superior mechanical stability,thermal insulation,and flame retardancy owing to their hierarchically cellular microstructures and intrinsic advantages of the thermosetting matrix.Increasing the long-time fire resistance is very important to the practical application.In this study,we present a novel coating strategy by a vacuum-assisted sonication technique(sonocoating)with a rectorite nanosheet dispersion to create a uniform nanocoating on the channel walls of synthetic wood.Owing to ultrasonic energy and vacuum pressure,the nanosheet dispersion can penetrate deep down to form a layered nanocoating on the channel surface.The coated synthetic woods can withstand fire(400-600℃)for more than 10 min with 62%mass retainment,surpassing uncoated synthetic woods and natural woods.Therefore,as a lightweight and strong composite with enhanced flame-retardant performance,the coated synthetic woods have huge potential applications in safe and energy-efficient buildings.

关 键 词：synthetic wood sonocoating vacuum infiltration rectorite nanosheets FLAME-RETARDANT 

分 类 号：TB383[一般工业技术—材料科学与工程]