聚吡咯/Fe3O4球形纳米颗粒制备及其吸波性能

摘要

Polypyrrole/Fe3O4 (PPy/Fe3O4) was synthesized via one-pot process and the influences pattern of the polymerization degree of PVA on micro-morphology and wave-absorptive performance of spherical PPy/Fe3O4 composite was investigated.The microstructure characterization and the investigation of waveabsorbing performance of the prepared PPy/Fe3O4 composite were conducted with transmission electron microscopy (TEM),X-ray diffraction (XRD).Fourier transformation-infrared (FT-IR) spectroscope,and vector network analyzer (VNA).The result showed that the PPy/Fe3O4 composite would exhibit regular sphere when the polymerization degree of PVA was 1 750 and the nano-particles of Fe3O4 were uniformly distributed onto the surface of the polypyrrole.The reflection loss value of PPy/Fe3O4 composite was -36 dB at 6.5 GHz with the thickness of 3.5 mm and the absorption bandwidth was 1.8 GHz.%采用一锅法制备聚吡咯/Fe3 O4 (PPy/Fe3O4)复合材料,研究不同聚合度的PVA对球形PPy/Fe3O4复合材料微观形貌及其吸波性能的影响规律.用透射电镜(TEM),X射线衍射仪(XRD),傅立叶-红外光谱仪(FT-IR)和矢量网络分析仪(VNA)等分析测试手段对制备的复合材料进行微观结构表征和性能研究.结果表明:当PVA聚合度为1 750时,PPy/Fe3O4复合材料呈规整球状,Fe3O4纳米粒子均匀负载在PPy表面;复合材料在6.5GHz、3.5mm厚度处反射损耗为-36 dB,频宽为1.8 GHz.