高电压技术2012，Vol.38Issue(8)：1891-1900,10.
亲水性时静态接触角算法及在硅橡胶憎水性检测中的应用
Static Contact Angle Algorithm of Hydrophilicity and Its Application in Silicone Rubber Hydrophobicity Detection
摘要
Abstract
To improve accuracy of calculating the static contact angle of hydrophilic materials,we proposed a static contact angle algorithm considering globule volume and hydrophobicity.The globule edge curve was generated by the Young-Laplace equation,in the meantime,noise was superimposed to the curve to simulate the error of edge extraction,thereby,we studied the influences of the globule volume and contact angle on circle fitting algorithm and ellipse fitting algorithm.When the contact angle is not more than 90°,the globule volume less than 200μL,and contact line shorter than 1cm,we studied the influence of noise content on accuracy of the two algorithms.The results indicate that,the influence of noise on the ellipse fitting algorithm is more remarkable than that on the circle fitting algorithm,and the larger contact angle,the smaller influence.The error of the circle fitting algorithm will increase obviously with the increase of the globule volume,and the ellipse fitting algorithm will increase slightly.If the contact angle is less than 15°,the circle fitting algorithm should be selected to calculate the contact angle.If the contact angle is larger than 15°and less than 70°,in the meantime,the globule volume is less than 7μL,the circle fitting algorithm should be selected.If the contact angle is larger than 15°and less than 70°,in the meantime,the globule volume is larger than 7μL,the ellipse fitting algorithm should be selected.If the contact angle is larger than 70°and less than 90°,the ellipse fitting algorithm should be selected.Finally,the proposed contact angle algorithm was used to calculate the static contact angle of silicone rubber samples with different hydrophobicities,and the conclusion was verified by the experiment.If the silicone rubber material is hydrophilic,the accuracy of the static contact angle measurement can be improved by using the proposed method.关键词
硅橡胶/憎水性/亲水性/静态接触角/圆拟合/椭圆拟合/Young-Laplace方程/水珠体积Key words
silicone rubber/hydrophobicity/hydrophilicity/static contact angle/circle fitting/ellipse fitting/Young-Laplace equation/globule volume分类
信息技术与安全科学引用本文复制引用
徐志钮,王国利,赵丽娟,赵鹏,王刚,李丹丹..亲水性时静态接触角算法及在硅橡胶憎水性检测中的应用[J].高电压技术,2012,38(8):1891-1900,10.基金项目
特高压工程技术（昆明、广州）国家工程实验室开放基金 （）
中央高校基本科研业务费专项资金 （）
大学生创新性实验计划 （）
