Abstract

Films of microwave-absorbing ferrite-polymer composites comprising 5–50 vol % inclusions were synthesized. X-ray powder diffraction analysis showed that the obtained films are a two-phase composite and contain no other phases but the ferrite and the polymer. Differential scanning calorimetry suggested that the polymer matrix degrades at a temperature above 100°C. The IR spectra of the composites indicated an increase in the crystallinity of the polymer with increasing ferrite content. In the composite containing 40 vol % ferrite, the metal plate reflection coefficient increases to –25 dB at a frequency of 3.2 GHz. Measurements of the permittivity and the electrical conductivity in the frequency range 100 Hz–1 MHz demonstrated that the real part of the permittivity increases with increasing content of the magnetic phase, whereas the electrical conductivity remains unchanged.

中文翻译：

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含Mn 0.5792 Zn 0.2597 Fe 2.1612 O 4夹杂物和-[（CH 2 -CH 2）m-（CF 2 -CF 2）n] k-聚合物基复合材料的微波吸收复合膜的合成及性能研究

摘要

合成了包含5-50％（体积）夹杂物的吸收微波的铁氧体-聚合物复合材料薄膜。X射线粉末衍射分析表明，所获得的膜是两相复合物，除铁素体和聚合物外不包含其他相。差示扫描量热法表明聚合物基质在高于100℃的温度下降解。复合材料的红外光谱表明，随着铁素体含量的增加，聚合物的结晶度增加。在含有40％（体积）铁素体的复合材料中，金属板的反射系数在3.2 GHz的频率下增加到–25 dB。在100 Hz–1 MHz频率范围内对介电常数和电导率的测量表明，介电常数的实部随磁相含量的增加而增加，