Layered Double Hydroxide Nanosheets Incorporated Hierarchical Hydrogen Bonding Polymer Networks Coatings  

作　　者：Bifan Guo Yimin He Yongming Chen Tianci Yang Chaohua Peng Weiang Luo Birong Zeng Yiting Xu Lizong Dai 

机构地区：[1]Fujian Provincial Key Laboratory of Fire Retardant Materials,College of Materials,Xiamen University,Xiamen 361000,People’s Republic of China [2]Xiamen Key Laboratory of Fire Retardant Materials,Xiamen University,Xiamen 361000,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第5期374-390,共17页纳微快报(英文版)

基　　金：the financial support from the National Natural Science Foundation of China(524B2168,U22A20149,52173081,and 52273275)。

摘　　要：In recent decades,annual urban fire incidents,including those involving ancient wooden buildings burned,transportation,and solar panels,have increased,leading to significant loss of human life and property.Addressing this issue without altering the surface morphology or interfering with optical behavior of flammable materials poses a substantial challenge.Herein,we present a transparent,low thickness,ceramifiable nanosystem coating composed of a highly adhesive base(poly(SSS1-co-HEMA1)),nanoscale layered double hydroxide sheets as ceramic precursors,and supramolecular melamine di-borate as an accelerator.We demonstrate that this hybrid coating can transform into a porous,fire-resistant protective layer with a highly thermostable vitreous phase upon exposure to flame/heat source.A nanosystem coating of just~100μm thickness can significantly increase the limiting oxygen index of wood(Pine)to 37.3%,dramatically reduce total heat release by 78.6%,and maintain low smoke toxicity(CIT_G=0.016).Detailed molecular force analysis,combined with a comprehensive examination of the underlying flame-retardant mechanisms,underscores the effectiveness of this coating.This work offers a strategy for creating efficient,environmentally friendly coatings with fire safety applications across various industries.

关 键 词：NANOCOMPOSITES SUPRAMOLECULAR Flame retardancy Ceramic-like char layer Fire protection 

分 类 号：TB306[一般工业技术—材料科学与工程]