双氧水对镁系无机泡沫材料性能和孔结构的影响

doi:10.11896/j.issn.1005-023X.2017.024.019

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Abstract Magnesium inorganic foam materials with a large number of closed pores were prepared by chemical foaming process using magnesium cementitious materials as matrix and hydrogen peroxide as foaming agent. The effects of addictive amount of hydrogen peroxide on the foaming ratio, bulk density, compressive strength, bending strength, pore structure parameters and thermal conductivity of foam materials were studied. The results demonstrated that the addition of hydrogen peroxide increased, the bubble nuclei in the slurry increased, and the internal force of the bubble growth increased, which made the pore diameter become larger and the bulk density and mechanical strength reduced. Furthermore, the thermal conductivity decreased, and then increased when the addictive amount of hydrogen peroxide was lager than 16‰. Regression equations of the compressive strength, flexural strength with bulk density of the magnesium inorganic foam materials are y=-6.06+24.19x, y=-0.64+3.82x, respectively, which are closely linear correlations. When the addictive amount of hydrogen peroxide was 8‰, the maximum mechanical strength was obtained. At this time, the pore diameter was the smallest, the pore structure parameter was better, the thermal conductivity was 0.071 W/(m·K) and the bulk density was only 0.54 g/cm³.

Key words： magnesium cementitious materials hydrogen peroxide inorganic foam materials chemical foaming pore structure

Published: 25 December 2017 Online: 2018-05-08

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TU55

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	Articles by authors
	XIAO Junhua
	ZHAN Manjun
	CHEN Xiulan
	WANG Jian
	ZUO Yingfeng
	WU Yiqiang

Cite this article:

XIAO Junhua,ZHAN Manjun,CHEN Xiulan, et al. Effect of Hydrogen Peroxide on Properties and Pore Structure of Magnesium Inorganic Foam Materials[J]. Materials Reports, 2017, 31(24): 96-100.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.024.019 OR https://www.mater-rep.com/EN/Y2017/V31/I24/96

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