氢氧化钙粉末界面张力的测定  

The Determination of Interfacial Tension of Calcium Hydroxide Powder

作　　者：王农[1] 薛瑞[1] 杨宇平[1] 王兴权[1] 

机构地区：[1]兰州交通大学化学与生物工程学院

出　　处：《化学研究与应用》2011年第10期1364-1368,共5页Chemical Research and Application

基　　金：甘肃省科技支撑计划项目(批准号:097GKCA028);兰州交通大学"青蓝"人才工程基金资助项目

摘　　要：以Washburn方程为理论依据,采用毛细管上升法,设计了简易实验装置,测定了氢氧化钙粉末在水、二甲基亚砜和甘油中的润湿接触角。在此实验结果基础上,利用Y-G-G-F-V方程建立了计算固相表面张力和液-固界面张力的表达式,并分别计算出氢氧化钙粉末的表面张力、氢氧化钙与水、二甲基亚砜和甘油的液-固界面张力,为固体粉末的表面张力和界面张力的测定提供了一种简易可行的实验方法。Wetting contact angle of calcium hydroxide powder in water,dimethyl sulfoxide and glycerin had been measured respectively,simple experiment device was designed by capillary rise method with Washburn equation as the theory basis.The expression formulas for the gas-solid and liquid-solid interfacial tension were set up by using the Y-G-G-F-V equation.According to experimental data,the surface tension of calcium hydroxide powder,the interfacial tension between calcium hydroxide and three kinds of liquids：water,dimethyl sulfoxide and glycerin were calculated separately.A simple and feasible experimental method for determinationing the surface tension and the interfacial tension of solid powder was offered by our research.

关 键 词：氢氧化钙 Y-G-G-F-V方程 界面张力 接触角 

分 类 号：O647.5[理学—物理化学]