杜仲胶晶型调控对复合材料吸波性能的影响  

Effect of crystal form regulation of eucommia ulmoides gum onthe absorption performance of composites

作　　者：蔡念之 康海澜 何志豪 汪温 方庆红 CAI Nianzhi;KANG Hailan;HE Zhihao;WANG Wen;FANG Qinghong(College of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Liaoning Provincial Key Laboratory of Rubber&Elastomer,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学材料科学与工程学院,沈阳110142 [2]辽宁省橡胶弹性体重点实验室,沈阳110142

出　　处：《功能材料》2023年第11期11198-11205,共8页Journal of Functional Materials

基　　金：国家自然科学基金项目(52073178)。

摘　　要：以杜仲橡胶(EUG)为基体,以多壁碳纳米管(MWCNTs)为吸波填料通过机械混炼法制备MWCNTs/EUG复合吸波材料。并使用等温结晶法调控制备不同比例α、β晶型的MWCNTs/EUG复合吸波材料。对不同晶型比例的复合材料进行矢量网络测试、X射线衍射分析(XRD)、差式扫描量热分析(DSC)对比5种不同晶型比例的MWCNTs/EUG复合材料的吸波性能和结构发现:更多的α晶型提升了MWCNTs/EUG复合材料的吸波能力,α晶型含量为64.59%的MWCNTs/EUG复合材料最大反射率损耗为-54.04 dB,最大有效吸收频宽(<-10dB)为3.14 GHz。并通过分析复合材料的结构和电磁参数,探究了α晶型对复合材料吸波性能影响的作用机理。In this paper,MWCNTs/EUG composite absorbing materials were prepared by mechanical mixing usingeucommia ulmoides gum(EUG)as matrix and multi-walled carbon nanotubes(MWCNTs)as absorbing fillers.MWCNTs/EUG composite absorbing materials with different proportions ofαandβcrystal forms were prepared by isothermal crystallization method.Vector network testing,phase analysis of X-ray diffraction(XRD)and differential scanning calorimetry(DSC)were performed on composites with different crystal form proportions compared with the absorption performance and structure of five MWCNTs/EUG composites with different crystal form proportions.It was found that moreαcrystal forms improved the absorption capacity of MWCNTs/EUG composite,and the maximum reflectivity loss of MWCNTs/EUG composites with aαcrystal form content of 64.59%was-54.04 dB,and the maximum effective absorption bandwidth(<-10 dB)was 3.14 GHz.By analyzing the structure and electromagnetic parameters of the composites,the mechanism of the influence ofαcrystal form on the absorption performance of the composite was explored.

关 键 词：吸波材料 电磁参数 杜仲橡胶 晶型调控 

分 类 号：TQ332.3[化学工程—橡胶工业]