| 微波辐射对硫酸钙粉末表面能影响的研究 |
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| 引用本文： | 陈勤芹,刘代俊.微波辐射对硫酸钙粉末表面能影响的研究[J].高校化学工程学报,2009,23(1). |
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| 作者姓名： | 陈勤芹 刘代俊 |
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| 作者单位： | 四川大学化工学院,四川,成都,610065;四川大学化工学院,四川,成都,610065 |
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| 摘 要： | 为了探索微波对固态物质表面的影响作用,并对化工表面过程引入微波强化提供依据,根据Washburn浸溃理论和Owens-Wendt-Kaelble法及薄板毛细渗透技术,采用了多种有机物作为液体探针,测定了微波辐射下硫酸钙粉末的接触角变化和表面自由能.测定结果显示微波辐射后硫酸钙粉末的表面自由能得到提高,从39.6mJ·-2增加到41.8mJ·m-2,其主要原因是使硫酸钙表面能的极性成分得到了较大的提高.这一结果归于微波幅射引起晶粒表面的电荷重排,与晶粒表面能带分裂引起的电子跃迁理论是相吻合的.
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| 关 键 词： | 微波辐射 表面能 硫酸钙 毛细渗透 |
Influence of Microwave Radiation on the Surface Free Energy of Calcium Sulfate |
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| CHEN Qin-qin,LIU Dai-jun.Influence of Microwave Radiation on the Surface Free Energy of Calcium Sulfate[J].Journal of Chemical Engineering of Chinese Universities,2009,23(1). |
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| Authors: | CHEN Qin-qin LIU Dai-jun |
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| Affiliation: | School of Chemical Engineering;Sichuan University;Chengdu 610065;China |
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| Abstract: | In order to explore the effect of microwave on the solid surface so as to promote the technology of microwave intensification in chemical surface process, and based on the Washburn penetration theory, Owens-Wendt-Kaelble method and thin layer wicking technology, the variation of surface free energy of calcium sulfate powder in the microwave field was measured by using several organic compounds as liquid probes. The results show that, after treated with microwave radiation, the surface free energy of the pow... |
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| Keywords: | microwave radiation surface free energy calcium sulphate thin layer wicking |
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