Humidity control materials prepared from diatomite and volcanic ash
Humidity control materials prepared from diatomite and volcanic ash
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DOI：
10.1016/j.conbuildmat.2012.09.040
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发表时间：
2013-01-01
影响因子：
7.4
通讯作者：
Bui Xuan Nam
中科院分区：
文献类型：
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作者：
Dinh-Hieu Vu;Wang, Kuen-Sheng;Bui Xuan Nam
本文研究了在添加和不添加过硼酸钠的情况下，用高岭土和火山灰的混合物烧结制备调湿材料。对最终产物进行分析，以确定吸湿-脱湿性能、多孔性和机械性能。此外，还研究了烧结温度和不同混合比例对最终产物的影响。烧结产物具有介孔结构，孔径趋于2-50 nm，比表面积为14.1 ± 1 ~ 65 ± 3 m2/g，孔隙率为65.23 ± 3 ~ 70.84 ± 5%。另外，调湿材料的吸放湿能力随吸湿剂含量的增加而增强。结果表明，由90%硅藻土、8%火山灰和2%高硼酸钠混合物制成的最佳产品在1000 ℃和1100 ℃烧结温度下的吸湿量分别达到65 +/- 4和55 +/- 2 g/m（2）。最好的产品作为湿度控制建筑材料表现出优异的性能，具有良好的机械性能，可用于各种建筑应用，成本低。(C)2012爱思唯尔有限公司保留所有权利。
The preparation of humidity control materials has been studied by sintering a mixture of diatomite and volcanic ash with and without the addition of sodium perborate. The final products were analyzed to identify moisture adsorption-desorption performances, porous and mechanical properties. In addition, effects of sintering temperature and various mixed portions on the final products were also investigated. The sintered products have mesoporous structure with the pore diameter tends to be in the range of 2-50 nm, and the porous properties reach from 14.1 +/- 1 to 65 +/- 3 m(2)/g in BET surface area and from 65.23 +/- 3 to 70.84 +/- 5% in porosity. In addition, moisture adsorption-desorption ability of the humidity control materials increases as diatomite content increases. The results indicate that the adsorbed moisture amount of the best products manufactured from the mixture of 90% diatomite, 8% volcanic ash and 2% sodium perborateat sintering temperature of 1000 degrees C and 1100 degrees C reach 65 +/- 4 and 55 +/- 2 g/m(2), respectively. The best products show excellent performance as a humidity control building material with fine mechanical properties and can be used for various construction applications at low cost. (C) 2012 Elsevier Ltd. All rights reserved.