基于 CuCoFeO（x = 0.33、0.67、1）尖晶石铁氧体纳米粒子的热塑性聚氨酯纳米复合材料，具有还原氧化石墨烯，可实现高效电磁干扰屏蔽。

CuCoFeO (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding.

机构信息

Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic.

Leibniz Institute of Polymer Research Dresden (IPF Dresden), 01069 Dresden, Germany.

出版信息

Int J Mol Sci. 2022 Feb 26;23(5):2610. doi: 10.3390/ijms23052610.

CuCoFeO (x = 0.33, 0.67, 1)-reduced graphene oxide (rGO)-thermoplastic polyurethane (TPU) nanocomposites exhibiting highly efficient electromagnetic interference (EMI) shielding were prepared by a melt-mixing approach using a microcompounder. Spinel ferrite CuCoFeO (CuCoF1), CuCoFeO (CuCoF2) and CuFeO (CuF3) nanoparticles were synthesized using the sonochemical method. The CuCoF1 and CuCoF2 exhibited typical ferromagnetic features, whereas CuF3 displayed superparamagnetic characteristics. The maximum value of EMI total shielding effectiveness (SE) was noticed to be 42.9 dB, 46.2 dB, and 58.8 dB for CuCoF1-rGO-TPU, CuCoF2-rGO-TPU, and CuF3-rGO-TPU nanocomposites, respectively, at a thickness of 1 mm. The highly efficient EMI shielding performance was attributed to the good impedance matching, conductive, dielectric, and magnetic loss. The demonstrated nanocomposites are promising candidates for a lightweight, flexible, and highly efficient EMI shielding material.

采用熔体混合法，利用微型混合机制备了具有高效电磁干扰（EMI）屏蔽性能的 CuCoFeO（x=0.33、0.67、1）-还原氧化石墨烯（rGO）-热塑性聚氨酯（TPU）纳米复合材料。采用超声化学法合成了尖晶石铁氧体 CuCoFeO（CuCoF1）、CuCoFeO（CuCoF2）和 CuFeO（CuF3）纳米粒子。CuCoF1 和 CuCoF2 表现出典型的铁磁特征，而 CuF3 则表现出超顺磁特征。在 1mm 厚度时，CuCoF1-rGO-TPU、CuCoF2-rGO-TPU 和 CuF3-rGO-TPU 纳米复合材料的 EMI 总屏蔽效能（SE）的最大值分别为 42.9dB、46.2dB 和 58.8dB。高效的 EMI 屏蔽性能归因于良好的阻抗匹配、导电、介电和磁损耗。所制备的纳米复合材料有望成为一种轻量、灵活且高效的 EMI 屏蔽材料。