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

被引：0
|
作者：
Liu, Ju [1 ,2 ]
Zhan, Huanhui [2 ]
Song, Jianan [2 ]
Wang, Chenfei [2 ]
Zhao, Tong [2 ]
Fu, Bo [2 ]
机构：
[1] Nantong Inst Technol, Coll Safety Engn & Emergency Management, Nantong 226002, Peoples R China
[2] Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China
来源：
POLYMERS | 2024年 / 16卷 / 19期
基金：
中国国家自然科学基金;
关键词：
aerogel; sodium alginate; flame retardant; thermal insulation; synergistic effect;
D O I：
10.3390/polym16192814
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this study, sodium alginate (SA) aerogel cross-linked with Ca2+ 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<middle dot>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.
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页数：13
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