• 更多栏目

    段玉平

    • 教授     博士生导师   硕士生导师
    • 主要任职:国际教育学院院长、直属党支部书记、留学生办公室主任
    • 其他任职:辽宁省凝固控制与数字化制备技术重点实验室副主任
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:材料科学与工程学院
    • 学科:材料加工工程
    • 办公地点:铸造中心213
    • 联系方式:0411-84708446
    • 电子邮箱:duanyp@dlut.edu.cn

    访问量:

    开通时间:..

    最后更新时间:..

    Graphene to tune microwave absorption frequencies and enhance absorption properties of carbonyl iron/polyurethane coating

    点击次数:

    论文类型:期刊论文

    第一作者:Duan, Yuping

    通讯作者:Duan, YP; Wang, TM (reprint author), Dalian Univ Technol, Key Lab Solidificat Control & Digital Preparat Te, Sch Mat Sci & Engn, Dalian 116085, Peoples R China.

    合写作者:Liu, Yi,Cui, Yulong,Ma, Guojia,Wang Tongmin

    发表时间:2018-12-01

    发表刊物:PROGRESS IN ORGANIC COATINGS

    收录刊物:SCIE、Scopus

    卷号:125

    页面范围:89-98

    ISSN号:0300-9440

    关键字:Microwave absorption; Coating; Carbonyl iron; Graphene sheet

    摘要:Waterborne polyurethane matrix coatings using the carbonyl iron particles (CIP) and graphene sheets (GNs) as electromagnetic wave absorbing fillers were fabricated. The electromagnetic parameters of CIP and GNs were measured in 2-18 GHz by transmission/reflection technology. The reflection loss (RL) of the coatings was measured by the arch method. The electromagnetic loss mechanisms and the effect of GNs addition on absorption properties and of composites were discussed. And the morphology of fillers and the micrographs of coatings fracture surface were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that, the unique electromagnetic properties of GNs can make up the shortage of CIP, and the synergistic effects of dielectric/magnetic composites can improve the electromagnetic wave attenuation. In addition, the electromagnetic wave absorption properties can be adjusted by simply changing the content of GNs and CIP particles to obtain the broadband microwave absorption coatings with small thickness. When the mass ratio is CIP:PU:GNs = 2.5:1:0.01, reflection loss values exceeding -10 dB can be obtained in the frequency range of 10.9 - 18 GHz with a thickness of 1 mm. The models of equivalent circuit and synergistic effect among CIP/GNs/PU composite coating were built to analyze the improvement mechanisms of absorption properties.