泡沫炭基电磁屏蔽复合材料制备综合实验设计  

Comprehensive experiment design for the synthesis of carbon foam-based electromagnetic shielding composites

作　　者：刘和光 游才印[1] 田娜[1] 杨慧娟 冯卓宏 王哲哲 LIU Heguang;YOU Caiyin;TIAN Na;YANG Huijuan;FENG Zhuohong;WANG Zhezhe(School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China;College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048 [2]福建师范大学物理与能源学院,福建福州350117

出　　处：《实验技术与管理》2024年第5期69-75,共7页Experimental Technology and Management

基　　金：西安理工大学教育教学改革研究项目(xjy2203,xjy2315,xqj2201);福建省教育教学研究重大项目(FBJY20230287);福建师范大学碳中和研究院开放基金项目(TZH2022-08);2021年福建师范大学课程思政示范课程建设项目(K202101041);2023年福建师范大学教学教改项目(I202301036)。

摘　　要：该文聚焦电磁屏蔽材料和纳米材料的热点研究方向,设计了泡沫炭材料与银纳米颗粒(Ag NPs)复合材料的制备及电磁屏蔽性能分析综合实验。该实验通过直接炭化三聚氰胺泡沫及水热还原原位生长法制备了Ag NPs/泡沫炭复合材料。通过测量AgNPs/泡沫炭复合材料的电磁屏蔽参数,优化了电磁屏蔽效能。实验通过材料合成、物性表征、理论参数测试、性能应用等四个环节,拓宽了学生的知识面,锻炼了他们的实践动手能力和分析解决实际问题的能力。[Objective]With the full arrival of the electronic information age,diverse electronic devices such as digital cameras,laptops,and wearable gadgets have been extensively used in previous decades.These electronic devices have brought immense convenience to people’s daily lives,but they trigger serious electromagnetic interference and radiation pollution,which is detrimental to the regular operation of devices and equipment as well as people’s health.As an efficient way to overcome electromagnetic interference challenges,electromagnetic shielding materials can weaken the energy of electromagnetic waves due to the impedance mismatch between them.Therefore,in previous years,electromagnetic shielding materials have elicited substantial interest.In this paper,inspired by the emerging topic of electromagnetic shielding materials and nanomaterials,a thorough experiment is developed to create carbon foam and silver nanoparticle(Ag NPs)composite materials and examine their electromagnetic shielding characteristics.[Methods]In the experiment,melamine foam is directly pyrolyzed and carbonized at 1000℃using the direct carbonization technique.The acquired carbon foam possesses a typical 3D reticular open cell structure,demonstrating satisfactory stability,complete and uniform cell structure,smooth ligament,and large internal loadable space.Moreover,using PVP and silver nitrate as the starting materials,spherical Ag NPs with uniform morphology and 100-nanometer diameter are synthesized simply and swiftly using hydrothermal reduction.In the last step,Ag NPs/carbon foam composites are successfully created by the hydrothermal reduction of Ag NPs onto carbon foam.The microstructure and morphology of the obtained Ag NPs/carbon foam composites are comprehensively characterized by XRD and SEM.Results clearly show that the obtained composites possess a stable structure,and the Ag NPs demonstrate a uniform distribution on the skeleton of the carbon foam matrix.The EDS mapping also confirms the uniform distribution of silver and car

关 键 词：泡沫炭 电磁屏蔽 银纳米颗粒 电磁屏蔽效能 综合实验 

分 类 号：TB34[一般工业技术—材料科学与工程]