期刊
CARBOHYDRATE POLYMERS
卷 195, 期 -, 页码 71-78出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.04.063
关键词
Cellulose-based composite foam; Hydroxyapatite; Fire resistance
资金
- National Natural Science Foundation of China [21604081]
- Open Project of State Key Laboratory Cultivation Base for Non-metal Composites and Functional Materials [16kffk03]
Thermally insulating materials made from renewable resources are desirable for energy efficient buildings. Traditional petroleum-derived insulating materials such as rigid polyurethane foam and expanded polystyrene display poor flame retardancy and inorganic insulating materials such as silica aerogel are fragile. Herein, we reported a facile approach to prepare cellulose nanofiber (CNF)-hydroxyapatite (HAP) composite foam by a simple freeze-drying process. The resultant HAP-CNF composite foams showed a thermal conductivity in the range of 38.5-39.1 mW/(m K) and very low peak heat release rate (20.4 kW/m(2)) and total heat release (1.21 MJ/m(2)). Vertical burning tests also manifested excellent fire resistance and self-extinguishing behaviours. Considering the excellent fire resistance of this composite foam, it is of significance to fire safety solution for buildings insulating materials.
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