“激光粒度仪法测定粉体粒度”教学实验的探讨与改进  

Discussion and Improvement of Teaching Experiment on "Determination of Particle Size by LPSA"

作　　者：高远飞[1] 司朝霞 李涛[1] 赵梦雨 Gao Yuanfei;Si Zhaoxiao;Li Tao;Zhao Mengyu(College of Chemistry and Pharmaceutical Engineering,Nanyang Normal University,Nanyang 473061,China;College of Physics and Electronic Engineering,Nanyang Normal University,Nanyang 473061,China)

机构地区：[1]南阳师范学院化学与制药工程学院,河南南阳473061 [2]南阳师范学院物理与电子工程学院,河南南阳473061

出　　处：《山东化工》2018年第20期127-128,130,共3页Shandong Chemical Industry

基　　金：河南省高等学校重点科研项目(16A430022);南阳师范学院校级科研项目(ZX2016015)

摘　　要：为使学生加深对实验原理的理解和灵活运用各种测试技术,本文中对"激光粒度仪法测定粉体粒度"材料化学专业实验内容进行了探讨和改进。在教学过程中,可结合艾里斑模型以及米氏散射理论的反演推导得出控制遮光率的目的。根据改进的混合粉体测定实验可加深学生对频度分布和累积分布曲线的理解。改进后的实验方案有利于学生更好的掌握此项测试方法,为今后的科学研究奠定基础。In order to deepen students'understanding of experimental principles and to flexibly apply materials testing techniques,this article discusses and improves the material chemistry experiment of"determination of particle size by laser particle size analyzer(LPSA)".In the teaching process,the purpose of controlling the light shading rate can be explained by combining the Airy's disc model and the Mie scattering theory.According to the mixed powder measurement experiment,students'understanding of frequency distribution and cumulative distribution curves can be deepened.The improved experimental program is conducive to students to efficiently master this test method and lay the foundation for future scientific research.

关 键 词：激光粒度仪 粉体粒度 材料化学专业 遮光率 

分 类 号：G421[文化科学—课程与教学论]