材料科学
复合材料
纳米复合材料
乙烯醇
气凝胶
抗压强度
三元运算
极限抗拉强度
聚乙烯醇
纤维素
傅里叶变换红外光谱
蒙脱石
化学工程
聚合物
程序设计语言
工程类
计算机科学
作者
Andong Liu,Lilian Medina,Lars A. Berglund
标识
DOI:10.1021/acsami.6b15561
摘要
Clay aerogels are foam-like materials with potential to combine high mechanical performance with fire retardancy. However, the compression strength of these aerogels is much lower than theoretically predicted values. High-strength aerogels with more than 95% porosity were prepared from a ternary material system based on poly(vinyl alcohol), montmorillonite clay platelets, and cellulose nanofibrils. A hydrocolloidal suspension of the three components was subjected to freeze-drying so that a low-density aerogel foam was formed. Cell structure was studied by field-emission scanning electron microscopy. Interactions at the molecular scale were observed by X-ray diffraction and Fourier transform infrared spectroscopy. Cross-linking was carried out using glutaraldehyde or borax, and moisture stability was investigated. These biobased ternary aerogels showed compression strength much better than that of previously studied materials and also showed strength higher than that of high-performance sandwich foam cores such as cross-linked polyvinyl chloride foams.
科研通智能强力驱动
Strongly Powered by AbleSci AI