电磁波吸收功能木基胶合板的制备与性能  

Preparation and Properties of Wood Based Plywood with Electromagnetic Wave Absorption Function

作　　者：刘娜 解帅[2] 张建均 冀志江[2] LIU Na;XIE Shuai;ZHANG Jian-jun;JI Zhi-jiang(Hunan Fuxiang Wood Industry Co.,Ltd.,Yueyang 414000,Hunan,P.R.China;State Key Laboratory of Green Building Materials,China Building Materials Academy,Beijing 100024,P.R.China)

机构地区：[1]湖南福湘木业有限责任公司,湖南岳阳414000 [2]中国建筑材料科学研究总院绿色建筑材料国家重点实验室,北京100024

出　　处：《林产工业》2022年第2期8-12,21,共6页China Forest Products Industry

基　　金：湖南省科技创新计划项目“湖南省生态功能型装饰材料工程技术研究中心”(2018TP2049)。

摘　　要：以纳米炭黑为电磁损耗材料对木质基板进行表面电磁改性,以此为基础设计并制备连续渐变阻抗结构吸波胶合板,研究了电磁改性对木质基板微观形貌以及阻抗的影响,测试了胶合板吸波性能及其他理化性能。结果表明:纳米炭黑在木质基板表面形成均匀、连续、光滑的电磁改性涂层;胶合板对1.8~5GHz电磁波反射率小于-7dB,胶合板层数增加,反射吸收峰向低频方向移动,增加吸收层层数可拓宽吸波频段;胶合板厚度一定时,减少吸收层层数或增加匹配层层数,反射吸收峰强度减弱;胶合强度、静曲强度等其他理化性能均满足标准要求。开发的吸波胶合板在电磁辐射防护领域具有广阔应用前景。The surface of wood substrate was modified using nano carbon black as electromagnetic loss material.Then,the continuous gradual impedance absorbing plywood was designed and prepared.The influence of electromagnetic modification on the microstructure and impedance of wood substrate was studied,and the electromagnetic wave absorbing properties and other physical and chemical properties of plywood were tested.The results showed that a uniform,continuous and smooth electromagnetic modified coating was formed on the surface of wood substrate.The reflectivity of plywood was less than-7 dB in 1.8~5 GHz frequency range.When the number of plywood layers increased,the reflection absorption peak moved towards the low frequency range,meanwhile the absorption frequency band can be widened by increasing the number of absorption layers.When the thickness of plywood was constant,the intensity of reflection absorption peak decreases by decreasing the number of absorption layers or increasing the number of matching layers.When the thickness of plywood was constant,the intensity of reflection absorption peak decreased when the number of absorbing layers was reduced or the number of matching layers was increased.The bonding strength,static bending strength,and other physical and chemical properties could meet the standard requirements.The developed electromagnetic wave absorbing plywood had broad application prospect in electromagnetic radiation protection.

关 键 词：吸波 胶合板 阻抗渐变 反射率 电磁波 

分 类 号：TS653[轻工技术与工程]