摘要
利用硅压力敏传感器采用拉脱法进行海水表面张力系数的测量。取三亚海域的海水浓度作为参考,将Na Cl溶液的浓度选在1%~9%。利用Origin软件对数据进行数值分析和模拟,结果表明,在恒定温度时,食盐水表面张力系数与浓度呈正线性相关,其随浓度增加略有增大;α_(海水)>α_(食盐水)>α_(纯水);在低温区,纯水、3.38%海水和5%食盐水的表面张力系数与温度呈负线性关系,并给出了表面张力系数随温度变化的近似表达式。
We made a measurement of the coefficient of seawater surface tension under different temperature and different concentration by silica pressure resistance sensor.With the Origin software,we analyzed and simulated the data obtained respectively,it is found that the surface tension coefficient of saline solution has a linear relation with the concentration at 25 degree,whose surface tension coefficient becomes greater with an increase in salinity ranged from 1% to 9%.The coefficient of seawater surface tension is greater than the saline solution and the water.Water,seawater and saline solution with a concentration of 5% has a negative linear relation with temperature in low temperature region.The approximate expression of the coefficient of these liquid surface tension with temperature is given in this paper.
出处
《黑龙江工业学院学报（综合版）》
2017年第8期32-35,共4页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
海南省高等学校教育教学改革重大项目(编号:Hnjgzd2014-09)
关键词
表面张力系数
海水
食盐水
浓度
温度
coefficient of surface tension
seawater
saline solution
concentration
temperature
