State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
J Colloid Interface Sci. 2022 Mar;609:794-806. doi: 10.1016/j.jcis.2021.11.089. Epub 2021 Nov 18.
Improving resilience, enhancing fire safety and adsorption properties were the key points for the preparation of high-performance flexible polyurethane foam (FPUF). Here, MOF-derived petal-like Co/Mg-double metal hydroxide (Co/Mg-LDH) and 3-aminopropyltriethoxysilane (APTES) were selected to modify the hydroxylated boron nitride (BNNS-OH) to obtain a hydrophobic BN@MOF-LDH@APTES. Compared with the previous work, BN@MOF-LDH@APTES demonstrated extremely high filler efficiency in reducing the heat release per unit mass (THR/TM) (18.2 % reduction) and smoke production per unit mass (TSP/TM) (19.1% reduction) of FUPF during combustion. In addition, the obtained FPUF nanocomposite exhibited high absorption capacity while achieving remarkable thermal stability and fire safety. Moreover, the FPUF nanocomposite containing 1 wt% BN@MOF-LDH@APTES achieved a 71% increase in compressive strength, indicating excellent resilience. Therefore, this work provided a new material for the preparation of high-resilience FPUF with both flame retardancy and adsorption capacity.
提高弹性、增强防火安全性和吸附性能是制备高性能柔性聚氨酯泡沫（FPUF）的关键。在此，选择了 MOF 衍生的花瓣状 Co/Mg-双金属氢氧化物（Co/Mg-LDH）和 3-氨丙基三乙氧基硅烷（APTES）对羟基化氮化硼（BNNS-OH）进行改性，得到疏水 BN@MOF-LDH@APTES。与以前的工作相比，BN@MOF-LDH@APTES 在降低单位质量的热释放（THR/TM）（减少 18.2%）和单位质量的烟雾产生（TSP/TM）（减少 19.1%）方面表现出极高的填充效率在燃烧过程中 FUPF 的量。此外，所得 FPUF 纳米复合材料表现出高吸收能力，同时实现了显著的热稳定性和防火安全性。此外，含有 1wt% BN@MOF-LDH@APTES 的 FPUF 纳米复合材料的抗压强度增加了 71%，表明弹性极佳。因此，这项工作为制备具有阻燃性和吸附能力的高弹性 FPUF 提供了一种新材料。
