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.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
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)
关键词
高分子磁体/TiO2复合材料
缩波
电磁性能
Ceramic matrix composites
Electromagnetic waves
Electromagnetism
Polymers
