新型定向导电橡胶的制备与性能研究
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摘要
通过对金属丝进行定向排布并采用浇注成型工艺制备了具有定向导电功能的橡胶基复合材料。通过扫描电镜对材料的微观结构进行表征,并测试了材料的密度、硬度、拉伸性能、导电性能和电磁屏蔽性能。结果表明:所制备的定向导电橡胶在平行金属丝排布方向的体积电阻率为0.07Ω·cm,在多频段的电磁屏蔽效能≥80dB,同时其拉伸性能、密度与传统填充型导电橡胶相比具有一定优越性,可作为定向导电衬垫应用于一维电磁屏蔽场合。
The rubber-based composite with directional conductive function was prepared by the orientation of the wires and cast molding.The microstructure of the material was characterized by SEM,and the density,hardness,tensile properties,electrical conductivity and electromagnetic shielding effectiveness were tested.The results showed that the volume resistivity of rubber paralleled to wire was 0.07Ω·cm,and the electromagnetic shielding effectiveness was≥80 dB within multiple frequency bands,and its tensile properties and density possessed certain advantages compared with the traditional filled conductive rubber.The novel rubber composite can be used as a directional conductive gasket for one-dimensional electromagnetic shielding.
The rubber-based composite with directional conductive function was prepared by the orientation of the wires and cast molding.The microstructure of the material was characterized by SEM,and the density,hardness,tensile properties,electrical conductivity and electromagnetic shielding effectiveness were tested.The results showed that the volume resistivity of rubber paralleled to wire was 0.07Ω·cm,and the electromagnetic shielding effectiveness was≥80 dB within multiple frequency bands,and its tensile properties and density possessed certain advantages compared with the traditional filled conductive rubber.The novel rubber composite can be used as a directional conductive gasket for one-dimensional electromagnetic shielding.
引文
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[3]苑博.电磁屏蔽用导电橡胶的制备及性能评价[D].北京:北京工业大学,2013.
[4]丁雪娇.高导电橡胶的制备及其性能研究[D].南京:南京航空航天大学,2015.
[5]柳学义,陈闯,杨艳宇.炭黑填充型硅橡胶复合材料的制备及其性能研究[J].绝缘材料,2012,45(1):15-18.
[6]陈天立.电磁屏蔽复合材料的制备及性能研究[D].广州:广东工业大学,2009.
[7]Zou H,Zhang L,Tian M,et al.Study on the structure and properties of conductive silicone rubber filled with nickel-coated graphite[J].Journal of Applied Polymer Science,2010,115(5):2710-2717.
[8]赵宜武.EPDM基导电橡胶复合材料的制备及性能研究[D].北京:北京化工大学,2014.
[9]王一龙,官建国,章桥新,等.复合导电橡胶的制备及性能[J].武汉理工大学学报,2008,30(10):1-4.
[10]赵丽琼.炭黑填充型导电硅橡胶导电特性研究[D].昆明:昆明理工大学,2012.
[11]孔祥依.短碳纤维表面化学镀镍及其复合材料屏蔽性能研究[D].太原:太原科技大学,2011.
[12]李昌林,马瑞廷,姚俊.导电玻璃微珠填充电磁屏蔽硅橡胶的研究[J].沈阳理工大学学报,2017,36(2):68-73.
[13]颜莎妮,邹华,张立群,等.镀镍填料/甲基乙烯基硅橡胶导电复合材料的制备与性能研究[J].橡胶工业,2012,59(11):645-649.
[14]雷海军,宫文峰,武晶,等.金属填料对高导电硅橡胶性能的影响[J].橡胶工业,2005,52(11):667-669.
[15]陈闯.导电橡胶复合材料的制备与性能研究[D].太原:中北大学,2012.
[16]王帮武,刘小艳,朱巍,等.高导电硅橡胶材料的性能[J].宇航材料工艺,2017(1):47-51.
[17]刘小艳,王帮武,朱巍,等.镀银铝粉/导电硅橡胶复合材料的制备与性能[J].弹性体,2017,27(1):36-41.
[18]焦冬生,任宗文,刘君,等.乙炔炭黑填充导电硅橡胶的研究[J].材料工程,2007(10):11-13.