[논문]Flame retardant polyester fabric from nitrogen-rich low molecular weight additives within intumescent nanocoating

Jordanov, Igor; Magovac, Eva; Fahami, Abbas; Lazar, Simone; Kolibaba, Thomas; Smith, Ryan J.; Bischof, Sandra; Grunlan, Jaime C.

doi:10.1016/j.polymdegradstab.2019.108998

Flame retardant polyester fabric from nitrogen-rich low molecular weight additives within intumescent nanocoating

Polymer degradation and stability, v.170, 2019년, pp.108998 -

Jordanov, Igor (Department of Textile Engineering, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University) , Magovac, Eva (Department of Textile Chemistry and Ecology, Faculty of Textile Technology, University of Zagreb) , Fahami, Abbas (Department of Mechanical Engineering, Texas A&M University) , Lazar, Simone (Department of Chemistry, Texas A&M University) , Kolibaba, Thomas (Department of Chemistry, Texas A&M University) , Smith, Ryan J. (Department of Chemistry, Texas A&M University) , Bischof, Sandra (Department of Textile Chemistry and Ecology, Faculty of Textile Technology, University of Zagreb) , Grunlan, Jaime C. (Department of Mechanical Engineering, Texas A&M University)

Abstract ▼ AI-Helper

Abstract An intumescent nanocoating composed of chitosan (CH) and ammonium polyphosphate (APP), with and without low-molecular weight nitrogen and nitrogen/sulphur based derivatives, was deposited on polyester fabric using the layer-by-layer technique. Guanidine sulfamate (GSM), urea and thiourea were added to the aqueous chitosan deposition solution in an effort to improve flame retardancy. Exceptional self-extinguishing behavior is observed with a 10 bilayer (BL) CH:GSM/APP coated fabric. This water-based coating added 19.6 wt% to the polyester and reduced peak heat release rate by 61.7%, relative to uncoated fabric. Furthermore, the polyester is not fully ignitable because of earlier decomposition of GSM that helps to generate a thicker sponge-like char that acts as a physical barrier. This unique addition of low-molecular weight molecules in traditional intumescent polyelectrolyte pairs is a new opportunity for imparting flame retardancy to highly flammable synthetic fibers used in clothing and home furnishing. Highlights A flame retardant multilayer coating of chitosan and ammonium polyphosphate filled with small molecule. The additive-filled coating is able to self-extinguish in vertical flame testing with a 10 bilayer coating. The small molecules promote greater condensed phase char formation as well as adding gas phase activity to the coating. Without the small molecules, 30 bilayers are needed to self-extinguish fabric.

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참고문헌 (41)

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Flame retardant polyester fabric from nitrogen-rich low molecular weight additives within intumescent nanocoating

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