液体薄膜的反常过滤性能研究  

Abnormal filtration properties of liquid films

作　　者：孙雨欣 毕辛仪 翟世龙[1] 杨超舜[1] 侯泉文[1] 尹剑波[1] SUN Yu-xin;BI Xin-yi;ZHAI Shi-long;YANG Chao-shun;HOU Quan-wen;YIN Jian-bo(School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China)

机构地区：[1]西北工业大学物理科学与技术学院,陕西西安710129

出　　处：《物理实验》2021年第7期51-57,共7页Physics Experimentation

基　　金：西北工业大学2021年度校级教育教学改革研究项目(No.2021JGY39);陕西省自然科学基础研究计划项目(No.2019JQ-083);国家自然科学基金项目(No.11804278)。

摘　　要：液体具有一定的自愈能力,使得纯液体制备的薄膜具有反常过滤性,即允许大尺寸颗粒通过而截留小尺寸颗粒.针对这一特性,本文建立了能够解释该现象的理论模型,研究了影响液体膜过滤性能的主要参量:液膜过滤“孔径”受物体半径与膜半径比值、液体表面张力系数、物体的密度以及物体释放高度.设计的液体膜过滤器具有易于制备的特点,通过调整几何参量和溶液配比即可得到满足需求的过滤尺寸.The films prepared by pure liquid with a certain self-healing ability have abnormal filterability,that is,large-size particles are allowed to pass through and small-size particles are intercepted.In view of this characteristic,the theoretical model which could explain this phenomenon was established,and several important parameters affecting the filtration performance of liquid membrane were studied and verified by experiments respectively.The liquid membrane filter involved in this paper was easily prepared,and the filter pore diameter could be obtained by simply adjusting the geometric parameters and solution ratio.

关 键 词：液体薄膜 反常过滤 自愈 能量转换 张力 几何参量 

分 类 号：O552.4[理学—热学与物质分子运动论]