Layer-by-layer assembly of silica-based flame retardant thin film on PET fabric |
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| Authors: | Federico CarosioGalina Laufer Jenny AlongiGiovanni Camino Jaime C Grunlan |
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| Institution: | a Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
b Department of Mechanical Engineering, 3123 Texas A&M University, College Station, TX 77843-3123, USA |
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| Abstract: | A novel method to improve flame retardant properties of textile fabric using multilayered thin films was evaluated. In this work, PET fabrics were coated with silica nanoparticles using layer-by-layer assembly. Five bilayers of positively and negatively charged colloidal silica (<10 nm average thickness) increased time to ignition and decreased heat release rate peak of PET fabric by 45% and 20%, respectively. In vertical burn test, this same nanocoating dramatically reduced burn time and eliminated melt dripping. This study demonstrates the ability to impart flame retardant behavior using a water-based, environmentally-friendly protective coating. |
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| Keywords: | PET Layer by layer Flame retardancy Cone calorimetry Silica |
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