Preparation and coating characteristics of high performance and broadband shielding fabric based on polyester fiber

IF 5.3 Q2 MATERIALS SCIENCE, COMPOSITES Composites Part C Open Access Pub Date : 2023-10-01 DOI:10.1016/j.jcomc.2023.100389

Dongqin Li, Yunjie Yang, Yongfu Zhang, Yan Xiang, Xiaolin Wei, Ben Ma, Weiwei Chen, Huanwu Cheng, Lu Wang

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Abstract

In this paper, electrodeposition was successfully used to prepare a kind of polyester fiber flexible broadband shielding material based on PET fabric. The Ni-Fe alloy coating prepared by electrodeposition can completely and evenly cover the substrate. The maximum saturation magnetic moment was 93.16 emu/g. The sample with the highest permeability was prepared through the process exploration experiment. The permeability increases first and then decreases with the increase of Fe content in the coating. The phase with the highest permeability in the coating is Ni₃Fe. The simulation results show that the shielding effect of Ni-Fe/Cu layer was better than that of Cu/Ni-Fe layers. The optimal shielding effectiveness can reach 28.4db in 10 kHz magnetic field and 80 dB in 100k∼10 MHz magnetic field. In the electromagnetic field of 30M∼18 GHz, the shielding effectiveness is greater than 85 dB, up to 110 dB. The tensile strength of the shielding fabric is 91.63 MPa, the displacement is small, and the material has no obvious elasticity. During the stretching process, the coating breaks first, and then the PET fabric breaks.

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聚酯纤维高性能宽频带屏蔽织物的制备及涂层性能

本文成功地采用电沉积法制备了一种基于PET织物的聚酯纤维柔性宽带屏蔽材料。电沉积制备的Ni-Fe合金涂层可以完全均匀地覆盖在基体上。最大饱和磁矩为93.16 emu/g。通过工艺探索实验，制备了渗透率最高的样品。随着涂层中铁含量的增加，渗透率先增大后减小。涂层中渗透率最高的相是Ni3Fe。仿真结果表明，Ni-Fe/Cu层的屏蔽效果优于Cu/Ni-Fe层。最佳屏蔽效果在10 kHz磁场下可达28.4db，在100k ~ 10 MHz磁场下可达80 dB。在30M ~ 18 GHz的电磁场中，屏蔽效能大于85 dB，最高可达110 dB。屏蔽织物的抗拉强度为91.63 MPa，位移小，材料无明显弹性。拉伸过程中，涂层先断裂，然后PET织物断裂。

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