Ultra-small sepiolite fiber toughened alumina aerogel with enhanced thermal stability and machinability | |
Zhang, Xiaokang; Zhang, Rui; Zhao, Chao | |
刊名 | JOURNAL OF POROUS MATERIALS |
2020 | |
卷号 | 27期号:5页码:1535-1546 |
关键词 | METAL-OXIDE AEROGELS HIGH-STRENGTH COMPOSITES |
DOI | 10.1007/s10934-020-00929-6 |
英文摘要 | Herein, a new sepiolite/alumina aerogel composite with outstanding toughness and machinability was prepared using AlCl3 center dot 6H(2)O precursor and sepiolite fibers by a specific sol-gel process and supercritical fluid drying. Sepiolite was added into the aluminum sols containing as high as 37 wt% of AlCl3 center dot 6H(2)O and the resulting sepiolite fibers dispersed randomly and uniformly with the lengths of 60-100 nm and diameters of 2-3 nm. With the increase in the ratio of sepiolite, the sepiolite-alumina aerogel composites exhibit no shrinkage during the sol-gel process and supercritical fluid drying, while a linear shrinkage of 4.6% was observed after heat-treatment at 1000 degrees C. Compared with undoped alumina aerogels, the sepiolite/alumina aerogel composites exhibit outstanding toughness and machinability on grinding, slicing and perforating. Meanwhile, the morphology, phase nature, and porosity of sepiolite/alumina aerogel composites with different sepiolite content (from 0 to 0.06 g/cm(3)) were investigated. |
学科主题 | Chemistry ; Materials Science |
内容类型 | 期刊论文 |
源URL | [http://ir.nimte.ac.cn/handle/174433/20697] |
专题 | 2020专题 |
作者单位 | Zhao, C (corresponding author), Chinese Acad Sci, Cixi Inst Biomed Engn, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
推荐引用方式 GB/T 7714 | Zhang, Xiaokang,Zhang, Rui,Zhao, Chao. Ultra-small sepiolite fiber toughened alumina aerogel with enhanced thermal stability and machinability[J]. JOURNAL OF POROUS MATERIALS,2020,27(5):1535-1546. |
APA | Zhang, Xiaokang,Zhang, Rui,&Zhao, Chao.(2020).Ultra-small sepiolite fiber toughened alumina aerogel with enhanced thermal stability and machinability.JOURNAL OF POROUS MATERIALS,27(5),1535-1546. |
MLA | Zhang, Xiaokang,et al."Ultra-small sepiolite fiber toughened alumina aerogel with enhanced thermal stability and machinability".JOURNAL OF POROUS MATERIALS 27.5(2020):1535-1546. |
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