期刊
MATERIALS LETTERS
卷 166, 期 -, 页码 35-38出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.12.027
关键词
Porous materials; Microstructure; Mechanical strength; Sintering; Vacuum-assisted foaming
资金
- National Natural Science Foundation of China [51172120]
- China Postdoctoral Science Foundation [2015M570094]
We report a novel vacuum-assisted foaming technique for preparing ultralight glass foams using green spheres as raw material. The green spheres were sintered to form ultralight glass foams under vacuum pressure. The effect of sintering temperature and vacuum pressure on the preparation and properties of glass foams was investigated. The porosity and cell size increased with the decrease of vacuum pressure. Glass foams were fabricated at vacuum pressure of 30-70 kPa, with bulk density, porosity and compressive strength values of 0.081-0.122 g/cm(3), 95.2-96.8% and 0.29-1.18 MPa, respectively. The ultralight glass foams have potential applications as thermal and acoustic insulation materials. (C) 2015 Elsevier B.V. All rights reserved.
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