| 초록 |
There have been some efforts to improve the flame retardant properties of the aerogels with various additives. Herein, the aerogel with chitosan and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was synthesized and enhanced its flame retardant properties. DOPO is widely used as a flame retardant material due to its flame retardant mechanism of its gas and condensed phases as well as its own environmentally friendly properties. This halogen-free DOPO can be synthesized with chitosan and vinyltrimethoxysilane (VTS) in an attempt to improving the flame retardancy of the aerogel. DOPO-VTS can be characterized by 1H-NMR and this synthesized aerogel was investigated by SEM and BET to differentiate the pure aerogel and DOPO-VTS chitosan aerogel. Besides, the flame retardant properties can be seen with the flammability tests.This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIT) (No. 2020R1A5A1019131)This work was supported by a grant (10080492) from Korea Evaluation Institute of Industrial Technology under Ministry of Trade, Industry and Energy (MOTIE), Republic of Korea. |
