Color adjustable, mechanically robust, flame-retardant and weather-resistant TiO2/MMT/CNF hierarchical nanocomposite coatings toward intelligent fire cyclic warning and protection - Details

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Abstract：

Fire　safety　and　protection　are　very　important　but　still　show　a　critical　global　challenge.　Developing　smart　fire　warning　materials　with　combined　passive　flame　retardancy　and　active　fire　alarm　response　is　promising　for　reducing　or　avoiding　serious　fire　disasters.　Various　nano-fillers　(e.g.,　graphene　oxide　and　MXene)　based　composite　coatings　have　proven　to　be　effective　for　monitoring　critical　fire　risk　of　various　combustible　materials;　however,　they　still　show　some　shortages,　for　example,　high　cost,　black　color,　poor　weather　resistance　and　complicated　fabricating　process.　Here,　we　report　a　green,　cost-effective　and　large-scale　strategy　for　fabricating　water-based　3D-titania/2D-montmorillonite/1D-celluose　nanofiber　(TiO2/MMT/CNF)　hierarchical　nanocomposite　coatings　with　adjustable　color,　mechanical　robustness,　good　flame　retardancy,　long-term　weather　resistance　and　sensitive　fire　cyclic　alarming　response.　The　formation　of　strong　chemical　bonding　and　hydrogen　bonding　interactions　among　polyethylene　glycol　molecules　and　multi-scale　nano-fillers　together　with　silane　surface　modification　can　produce　good　mechanical　flexibility　(folded　crane),　surface　hydrophobicity　(water　contact　angle　of　152°)　and　exceptional　flame　resistance　(good　structure　integrity　after　120　s　flame　exposure).　Notably,　the　optimized　nanocomposite　coatings　exhibit　ultrafast　fire　alarm　response　(＜3.5　s)　and　stable　fire　cyclic　alarming　capability　via　the　possible　band　transition　of　the　TiO2　network　under　flame.　Further,　such　color-adjustable　nanocomposite　coatings　can　be　easily　fabricated　for　large-scale　production,　and　they　show　excellent　stable　flame　retardancy　and　stable　fire　cyclic　warning　response　even　after　more　than　one-year　outdoor　exposure.　This　work　provides　a　promising　and　green　fire-warning　nanocomposite　coatings　with　combined　passive-active　functionalities　for　fire　warning　and　protection.　©　2023　Elsevier　Ltd

Keyword：

Color-adjustable Fire warning materials Flame retardancy Hierarchical hybrid nanofillers Surface super-hydrophobicity

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[ 1 ] [Shen Y.-B.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 2 ] [Yu K.-X.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 3 ] [Wang Y.-J.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 4 ] [Qu Y.-H.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 5 ] [Pan L.-Q.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 6 ] [Cao C.-F.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 7 ] [Cao K.]State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
[ 8 ] [Gao J.-F.]School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
[ 9 ] [Shi Y.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 10 ] [Song P.]Centre for Future Materials, University of Southern Queensland, Springfield Campus, 4300, QLD, Australia
[ 11 ] [Yong J.]Centre for Future Materials, University of Southern Queensland, Springfield Campus, 4300, QLD, Australia
[ 12 ] [Hong M.]Centre for Future Materials, University of Southern Queensland, Springfield Campus, 4300, QLD, Australia
[ 13 ] [Zhang G.-D.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 14 ] [Zhao L.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
[ 15 ] [Tang L.-C.]College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China

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