纳米碳纤维对水泥基材料介电损耗性能的影响  

Effect of carbon nanofiber on dielectric loss performance of cement-based materials

作　　者：王志航 白二雷[1] 赵明莉 王腾蛟 聂良学 Wang Zhihang;Bai Erlei;Zhao Mingli;Wang Tengjiao;Nie Liangxue(School of Aviation Engineering,Air Force Engineering University,Xi'an 710038;The Sixth Military Representative Office of the Air Force Equipment Department in Xi'an,Xi'an 710065;93125 Troops of PLA,Xuzhou 221005)

机构地区：[1]空军工程大学航空工程学院,西安710038 [2]中国人民解放军空军装备部驻西安地区第六军事代表室,西安710065 [3]中国人民解放军93125部队,徐州221005

出　　处：《化工新型材料》2023年第10期235-238,共4页New Chemical Materials

基　　金：国家自然科学基金(52278287,51908548);国家人民防空办公室立项课题(RF20SC01J-S0);陕西省高校科协青年人才托举计划项目(20200415)。

摘　　要：采用基于波导法的电磁参数测试系统测试了纳米碳纤维(CNFs)掺量为水泥质量0、0.05%、0.10%、0.15%、0.20%的CNFs增强水泥基材料在1.7~2.6GHz频率范围内的介电常数,通过分析介电常数实部(ε′)、介电常数虚部(ε″)和介电损耗角正切(tanδe),研究了CNFs对水泥基材料介电损耗性能的影响。结果表明:随着CNFs掺量的增加,水泥基材料的ε′、ε″和tanδe不断增大,极化能力和介电损耗能力不断增强,介电损耗性能不断提高。CNFs的掺增加了杂水泥基材料中的纤维相,且纤维相的介电常数更大,故水泥基材料的介电常数增大。The dielectric constants of carbon nanofiber(CNFs)reinforced cement-based materials with CNFs content of 0,0.05%,0.10%,0.15%and 0.20%were measured in the frequency range of 1.7~2.6GHz by electromagnetic parameter testing system based on waveguide method.The effects of CNFs on the dielectric loss performance of cement-based materials were studied by analyzing the real part of dielectric constant(ε′),the imaginary part of dielectric constant(ε″)and the dielectric loss tangent(tanδe).The results showed that theε′,ε″and tanδe of cement-based materials increased with the increase of CNFs content,and the polarization ability and dielectric loss ability of cement-based materials increased continuously.The addition of CNFs increased the fiber phase in cement-based materials,and the dielectric constant of fiber phase was larger,so the dielectric constant of cement-based materials increased.

关 键 词：水泥基材料 纳米碳纤维 介电损耗 介电常数 极化 

分 类 号：TU528[建筑科学—建筑技术科学]