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- Title
纳米SiO<sub>2</sub>气凝胶/水泥复合隔热板的 制备与性能研究.
- Authors
丰桢敏; 黄冬梅; 李德; 李瑞; 孙宇鹏
- Abstract
Using white Portland cement as the main gelled agent, a novel inorganic nano-SiO2 aerogel/cement composites ther原 mal insulation panel(ACP)was prepared by slip casting and drying at ambient pressure and room temperature. The effects of SiO2 aerogels with different mass fractions on the microstructure and thermal properties of cement-based composites were systematically studied by FT-IR, nitrogen adsorption, etc. The results showed that the addition amount of aerogel was negatively linear correlated with thermal conductivity and density, while the average pore size and specific surface area were overall positively correlated. The hysteresis loop of adsorption and desorption isotherms belonged to H3 type. In addition, when the amount of aerogel was 15%, the thermal conductivity and density of ACP decreased by 47.2% and 32.2%, respectively, compared with the control sample.
- Subjects
SLIP casting; THERMAL conductivity; PORTLAND cement; HYSTERESIS loop; ADSORPTION isotherms; CEMENT composites
- Publication
New Building Materials / Xinxing Jianzhu Cailiao, 2022, Issue 2, p124
- ISSN
1001-702X
- Publication type
Article