“激光粒度仪法测定粉体粒度”教学实验的探讨与改进

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英文篇名：Discussion and Improvement of Teaching Experiment on "Determination of Particle Size by LPSA" 作者：高远飞 ; 司朝霞 ; 李涛 ; 赵梦雨 英文作者：Gao Yuanfei;Si Zhaoxiao;Li Tao;Zhao Mengyu;College of Chemistry and Pharmaceutical Engineering,Nanyang Normal University;College of Physics and Electronic Engineering,Nanyang Normal University; 关键词：激光粒度仪 ; 粉体粒度 ; 材料化学专业 ; 遮光率 英文关键词：laser particle size analyzer;;particle size;;material chemistry major;;light shading rate 中文刊名：SDHG 英文刊名：Shandong Chemical Industry 机构：南阳师范学院化学与制药工程学院;南阳师范学院物理与电子工程学院; 出版日期：2018-10-23 出版单位：山东化工 年：2018 期：v.47;No.342 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) 语种：中文; 页：SDHG201820056 页数：3 CN：20 ISSN：37-1212/TQ 分类号：132-133+135

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.

引文

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