Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 123, Issue -, Pages 216-223Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2016.11.026
Keywords
APTES; Sodium phytate; Cotton fabrics; Flame retardancy; Thermal degradation properties; Layer-by-layer assembly
Funding
- National Natural Science Foundation of China [51673153]
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Flame retardant cotton fabrics were prepared based on 3-aminopropyl triethoxysilane (APTES) and sodium phytate through layer-by-layer assembly. The structure, surface morphologies before and after burning, flame retardant and thermal degradation properties of prepared cotton fabrics were examined by Fourier transform infrared analysis, scanning electron microscopy (SEM), vertical burning, cone calorimeter, thermogravimetric analysis coupled with Fourier transform infrared analysis (TG-FTIR). SEM results indicated that the product of APTES hydrolysis and sodium phytate we're deposited uniformly on the surface of cotton fabrics. In the vertical burning test, after removing the ignition source, the coated cotton fabrics with 15BL extinguished at once, while the uncoated cotton fabrics were burned out, remaining only a little ash. The improved fire retardancy was due to the formed thermally stable residual char on the surface of cotton fabrics, which prevented mass/heat transfer. It is noted from TG-FTIR results that coated cotton fabrics released more H2O and CO2, and less inflammable gases than those of uncoated cotton fabrics. (C) 2016 Published by Elsevier B.V.
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