高分子磁体/TiO_2复合缩波材料的电磁性能  

ELECTROMAGNETIC PROPERTIES OF POLYMER MAGNET/TiO_2COMPOSITE COMPACTWAVE MATERIALS

作　　者：林云[1] 朱世富[1] 林展如[2] 

机构地区：[1]四川大学材料科学与工程学院,成都610065 [2]四川师范大学化学系,成都610066

出　　处：《复合材料学报》2004年第2期45-49,共5页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金重点资助项目(No.2013420-01)

摘　　要：　研究了在100MHz～1800MHz的高频、微波下,高分子磁体/TiO2(简称OPM/TiO2)复合缩波材料的电磁参数变化。研究表明:丙烯酸改性的OPM/TiO2复合缩波材料有效地提高其介电常数,降低介电损耗和磁损耗,而60Co-r辐照的OPM/TiO2材料却显著地提高其磁导率及介电常数,但材料的磁损耗和介电损耗基本不变,因此,OPM/TiO2作为一种用于缩小电子器件及天线几何尺寸的复合缩波材料,对高频,微波通信、宇航和计算机有重要的理论和应用价值。The variation of electromagnetic parameters of the polymer magnet/TiO2 (i.e. OPM/TiO2) composite compactwave materials was studied in VHP and microwave frequency band at 100 MHz to 1800 MHz. The results show that the OPM/TiO2 modified by acrylic acid has a higher dielectric constant as well as lower dielectric loss and magnetic loss. The magnetic conductivity (u') and dielectric constant (Ε') were remarkably raised for OPM/TiO2 irradiated by cobalt-60 radiation, but its magnetic loss and dielectric loss have not changed basically. Thus, the OPM/TiO2, as a good compactwave material, is of great value both in theory and in practice for the VHP and microwave communication, space science, computer and so on.

关 键 词：高分子磁体/TiO2复合材料 缩波 电磁性能 

分 类 号：TB332[一般工业技术—材料科学与工程]