Abstract: Magnesium hydroxide (MH)/sodium polyphosphates (PSP),a bilayer of flame retardant,is constructed on the surface of cotton fabrics by using pad rolling method.Then,PSP/MH/SiO2 ternary flame retardant cotton fabrics is prepared by coating silicon dioxide colloidal particles with good heat insulation performance on the surface of cotton fabrics through physical adsorption method.The flame retardant mechanism of the ternary material is further discussed,its structure and morphology are measured by SEM and XRD,and its thermal stability are analyzed by means of thermogravimetric analysis (TGA),microscale combustion calorimeter (MCC),limiting oxygen index (LOI) and vertical flame testing (VFT).The results indicate that the as-prepared PSP/MH/SiO2 ternary flame retardant cotton fabrics shows self-extinguish and flame-retardant performances with a LOI value of 31%.What's more,its peak heat release rate (PHRR) and total heat release (THR) is 52.541 kW·m-2 and 0.92 MJ·m-2 respectively,and the rate of char residue is 40.1%.
樊崇辉, 徐阳. 磷/镁/硅三元阻燃棉的制备及性能研究[J]. 现代化工, 2019, 39(4): 79-84.
FAN Chong-hui, XU Yang. Preparation and performance of phosphorus/magnesium/silicon flame-retardant cotton. Modern Chemical Industry, 2019, 39(4): 79-84.
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