含氮和磷元素的阻燃隔热海藻酸钠气凝胶的简易构建

Facile Construction of Flame-Resistant and Thermal-Insulating Sodium Alginate Aerogel Incorporating N- and P-Elements.

作者信息

Liu Ju, Zhan Huanhui, Song Jianan, Wang Chenfei, Zhao Tong, Fu Bo

机构信息

Nantong Institute of Technology, College of Safety Engineering and Emergency Management, Nantong 226002, China.

Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.

出版信息

Polymers (Basel). 2024 Oct 4;16(19):2814. doi: 10.3390/polym16192814.

In this study, sodium alginate (SA) aerogel cross-linked with Ca was selected as the basic skeleton to construct a lightweight, flame retardant, and thermal insulating composite aerogel via modification with melamine and phytic acid. The resulting aerogel, SA-1.0 MP, achieved a thermal conductivity as low as 0.0379 W/(m·K). Compared to pristine SA aerogel, SA-1.0 MP demonstrated improved fire resistance, evidenced by a substantial increase in the limiting oxygen index (LOI) from 21.5% to 48.8% and a V-0 rating in the UL-94 test. Furthermore, a synergistic mechanism was proposed to explain its remarkable flame-retardant capability.