Poly（vinyl alcohol）/montmorillonite aerogels with high thermal stability and flame retardancy were prepared with a facile heat treatment method, in which the poly（vinyl alcohol）/montmorillonite aerogels was first ...Poly（vinyl alcohol）/montmorillonite aerogels with high thermal stability and flame retardancy were prepared with a facile heat treatment method, in which the poly（vinyl alcohol）/montmorillonite aerogels was first prepared by an eco-friendly freeze-drying method, following by a heat treatment process. The structure of the aerogels before and after heat treatment process was characterized by Fourier transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）. The thermal stability of the aerogel treated for 3 h at 200 ℃ was improved significantly, which was accompanied by a slight decrease of mechanical property. Meanwhile, cone calorimetry （CC） test revealed that the flame-retardant performance of the heat treated aerogel was improved remarkably.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos. 51320105011,51121001 and 51603130)Program for Changjiang Scholars and Innovative Research Team in University(No. IRT. 1026)+1 种基金Key Science Project of Department of Education, Sichuan Province(No. 16ZA0004)Sichuan Province Youth Science and Technology Innovation Team (No. 2017TD0006)
文摘Poly（vinyl alcohol）/montmorillonite aerogels with high thermal stability and flame retardancy were prepared with a facile heat treatment method, in which the poly（vinyl alcohol）/montmorillonite aerogels was first prepared by an eco-friendly freeze-drying method, following by a heat treatment process. The structure of the aerogels before and after heat treatment process was characterized by Fourier transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）. The thermal stability of the aerogel treated for 3 h at 200 ℃ was improved significantly, which was accompanied by a slight decrease of mechanical property. Meanwhile, cone calorimetry （CC） test revealed that the flame-retardant performance of the heat treated aerogel was improved remarkably.
