以四个参数为主线讲授高分子电学性质  

Using Four Parameters as the Core Teaching Content of Electrical Properties of Polymers

作　　者：黄兴溢[1] 江平开[1] 

机构地区：[1]上海交通大学高分子科学与工程系,上海200240

出　　处：《高分子通报》2017年第12期60-64,共5页Polymer Bulletin

基　　金：国家自然科学基金项目(51522703)

摘　　要：高分子的电学性质物理概念抽象、数理内容多,初学者难以掌握要领。不少学生学完课程后仍不清楚表征高分子的电学性质需要哪些参数,在选择特定应用的高分子材料时不知采用何种参数为判据。本文结合作者的教学实践,提出将介电常数、介电损耗、介电强度以及电导率等四个参数作为教学主线,明确学习目标,以提高教学效果。文中针对一些难教和难学的内容介绍了作者的教学体会,重点介绍了介电常数的物理意义和介电损耗的起源,希望有利于相关老师的教学。Electrical Properties of Polymers contains many abstract basic concepts and much mathematical and physical knowledge, and thus it is not easy to master the core content for many undergraduate students. Some students don＇t know which parameters should be used to characterize the electrical properties of polymers and also don＇t know which parameters should be used to select a polymer for a specific application. According to the experience of the authors, the teaching effect can be improved using four parameters （i. e. , dielectric constant, dielectric loss tangent, breakdown strength and electrical conductivity） as the core teaching content. In this article, the authors give their teaching experience on the contents which are difficult to teach and/or learn, and emphasis is given to the physical meaning and the origin of the dielectric loss. These may be referred by other teachers.

关 键 词：高分子的电学性质 介电常数 介电损耗 介电强度 电导率 

分 类 号：G642[文化科学—高等教育学] O631.23-4[文化科学—教育学]