He Zhicai, Zhao Zhengping, Xiao Shengwei, Yang Jintao, Zhong Mingqiang
College of Medicine and Chemical Engineering, Taizhou University Taizhou 318000 Zhejiang P. R. China
Zhijiang College, Zhejiang University of Technology Hangzhou 310014 P. R. China.
RSC Adv. 2018 Jul 25;8(47):26563-26570. doi: 10.1039/c8ra03007c. eCollection 2018 Jul 24.
Polymeric microcellular foams with high strength and light weight are very important for industrial applications. However, regulating their cell structure and their weak flame retardancy are problematic. We designed single-arm POSS-based ionic liquids ([bel-POSS][PF]), and constructed hybrid composites based on physical interaction between ionic liquids and carbon-based materials in PS microcellular foaming. Ionization of bel-POSS could result in a quaternary ammonium reaction and ion-exchange reaction, and the carbon materials exhibit good dispersion through blending. The prepared hybrid composites showed high CO adsorption. Conical calorimeter tests showed that PS composite materials could reduce the heat release rate, total heat release, toxic gases (CO and CO) release, and amount of smoke generated. These carbon materials could affect PS micropore structure, including the cell diameter and density. Upon addition of 5 wt% of carbon materials, the hole diameter decreased by >50%, and the hole density increased nearly ten folds.
具有高强度和轻质的聚合物微孔泡沫材料在工业应用中非常重要。然而，调节其泡孔结构以及其较弱的阻燃性是个问题。我们设计了基于单臂倍半硅氧烷的离子液体（[bel-POSS][PF]），并在聚苯乙烯微孔发泡过程中基于离子液体与碳基材料之间的物理相互作用构建了混杂复合材料。bel-POSS的离子化会导致季铵化反应和离子交换反应，并且碳材料通过共混表现出良好的分散性。所制备的混杂复合材料表现出高的CO吸附性能。锥形量热仪测试表明，聚苯乙烯复合材料可以降低热释放速率、总热释放量、有毒气体（CO和CO）释放量以及产烟量。这些碳材料会影响聚苯乙烯的微孔结构，包括泡孔直径和泡孔密度。添加5 wt%的碳材料后，孔径减小了>50%，泡孔密度增加了近十倍。
