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作 者:林春丹[1] 牛振宇 李秋真 张颖 王嘉曼 张万松[1] LIN Chundan;NIU Zhenyu;LI Qiuzhen;ZHANG Ying;WANG Jiaman;ZHANG Wansong(College of Science,China University of Petroleum(Beijing);School of New Energy and Materials,China University of Petroleum(Beijing),Beijing 102249)
机构地区:[1]中国石油大学(北京)理学院,北京102249 [2]中国石油大学(北京)新能源与材料学院,北京102249
出 处:《物理与工程》2021年第5期41-46,共6页Physics and Engineering
基 金:北京高校优质本科教材课件项目;中国石油大学(北京)教改项目(yjs2020020)。
摘 要:为探究氢氧化铁胶体的折射率、黏度与表面张力系数,设计了三个实验进行相关物理量的测量。设计了基于布鲁斯特定律测量胶体折射率的实验装置并测量了氢氧化铁胶体的折射率;制作了新型毛细管法测试装置并测量了氢氧化铁胶体的黏度;并利用拉脱法测试了氢氧化铁胶体的表面张力系数。同时,为验证布鲁斯特定律测试方法的准确性,利用衍射光栅法测试样品折射率,结果表明,两种测试方法结果近似,证明了基于布鲁斯特定律的折射率测试方法是可行的。上述实验对于学生了解氢氧化铁胶体的物理性质、提高创新和探索能力具有一定的帮助。In order to explore the refractive index,viscosity and surface tension coefficient of ferric hydroxide colloid,three experiments were designed to detect these physical properties.The experimental facility for measuring the refractive index of colloid based on Brewster's law was designed,and the refractive index of ferric hydroxide colloid was measured.The viscosity of ferric hydroxide colloid was measured by a new-type capillary method,and the surface tension coefficient of ferric hydroxide colloid was measured by the pull-off method.At the same time,in order to verify the accuracy of the test method based on Brewster's law,the diffraction grating method was used to test the refractive index of samples.It was shown that the results of the two methods are similar,which indicated that the refractive index measurement method based on Brewster's law was feasible.The above experiments are helpful for students to understand the physical properties of ferric hydroxide colloid and improve their ability of innovation and exploration.
关 键 词:氢氧化铁胶体 折射率 布儒斯特定律 黏度 表面张力系数
分 类 号:O552.42[理学—热学与物质分子运动论]
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