表面接触角测量装置的设计

摘要

A simple device for the surface contact angle measurement is introduced to provide an alternative setup and method,replace expensive special measuring instrument,and realize rapid evaluation of the surface contact angle during experimental studies on the surface wettability.The device consists of a sample platform,an optical system,a three-dimensional translational stage,adjustable volume pipettes,and a computer.A liquid droplet with a certain volume on the tested sample surface is imaged by the CCD camera in the optical system,and the computer software is used to analyze the image and to obtain the contact angle of the tested sample surface.The device structure,function and use are presented.%介绍了一种用于测量表面接触角的简易装置,目的是为材料表面的润湿性实验研究过程提供一种简易专用装置和方法,替代昂贵的专用测量仪器,用于快速评估被测样品表面的接触角.装置由样品台、光学系统、三维平移台、移液器和计算机组成,对被测样品表面具有一定体积的液滴通过光学系统成像,并将CCD相机与计算机相结合,对液滴形态图像进行存储和分析,从而得到被测样品的表面接触角.对装置的结构、功能和使用方法进行了介绍.