氧化锌/聚丙烯复合材料微波加热特性研究  

Study on Microwave Heating Characteristics of Zinc Oxide/Polypropylene Composites

作　　者：王行 王钧[1,2] 代巍 武壮 田旭军[3] WANG Hang;WANG Jun;DAI Wei;WU Zhuang;TIAN Xu-jun(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Institute of Advanced Material Manufacturing Equipment and Technology,Wuhan University of Technology,Wuhan 430070,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]武汉理工大学先进材料制造装备与技术研究院,武汉430070 [3]中国舰船研究设计中心,武汉430064

出　　处：《武汉理工大学学报》2020年第2期8-13,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51672201).

摘　　要：大部分热塑性聚合物,如聚丙烯(PP),由于介电损耗低,很难被微波加热。为提升PP的微波加热性能,选取3种不同形貌的氧化锌(ZnO),通过熔融共混工艺,制备3种ZnO/PP复合材料,并研究复合材料的微波加热性能。用矢量网络分析仪研究了复合材料的介电性能,利用红外热成像仪研究了复合材料的微波加热性能,采用扫描电子显微镜(SEM)观察ZnO在PP中的分散情况,通过拉伸和冲击强度评价复合材料的力学性能。结果表明,ZnO的加入使复合材料的介电损耗增加,从而提升其微波加热性能,且随着ZnO含量的增加而提高。在3种不同形貌ZnO中,四针状氧化锌(T-ZnO)对PP微波加热性能的提升效果最好,当T-ZnO质量含量为30%时,经过180s的微波辐照,样品的平均温度达到143℃,且部分熔融。Most thermoplastic polymers,such as polypropylene(PP),are difficult to be heated by microwave because of their low dielectric loss.In order to improve the microwave heating properties of PP,three kinds of zinc oxide(ZnO)with different morphologies were selected,and three kinds of ZnO/PP composites were prepared by melt blending process,and the microwave heating properties of the composites were studied.The dielectric properties of the composites were studied by vector network analyzer,and the microwave heating properties of the composites were studied by infrared thermal imager.The dispersion of ZnO in PP was observed by scanning electron microscope(SEM).The mechanical properties of the composites were evaluated by tensile and impact strength.The experimental results show that the dielectric loss of the composites increases with the addition of ZnO,which improves the microwave heating properties of the composites,and increases with the increase of ZnO content.Among the three different morphologies of ZnO,tetrapod-like zinc oxide(T-ZnO)has the best effect on the microwave heating performance of PP.When the content of T-ZnO is 30%,the average temperature of the sample reaches 143℃and partially melts after 180smicrowave irradiation.

关 键 词：氧化锌 聚丙烯 微波加热 介电性能 

分 类 号：TB332[一般工业技术—材料科学与工程]