镀镍碳纤维-碳纤维-玻璃纤维/乙烯基酯树脂导电复合材料的设计制备及其电磁性能

Design and preparation of Ni-plated carbon fiber-carbon fiber-glass fiber/vinyl ester resin conductive composites and their electromagnetic properties

本研究旨在设计制备兼具电和磁功能的新型导电复合材料。采用具有良好导电性的短切碳纤维(CF)与兼具磁性和导电性的短切镀镍碳纤维(Ni-CF)作为功能体,以短切玻璃纤维(GF)作为填料,以乙烯基酯树脂(VER)作为基体,设计制备电磁性能可调控的导电复合材料。分别研究了CF含量对CF-GF/VER导电复合材料体积电阻率的影响、Ni-CF长度对(Ni-CF)-CF-GF/VER导电复合材料体积电阻率的影响,重点研究了Ni-CF含量对(Ni-CF)-CF-GF/VER导电复合材料体积电阻率和磁导率的影响,并初步探索了导电复合材料的电磁屏蔽性能。结果表明:(Ni-CF)-CF-GF/VER导电复合材料体积电阻率在0.35~36.48Ω·cm范围内可调,磁导率在0.2~0.7内可调。CF和Ni-CF的含量和长度都会对(Ni-CF)-CF-GF/VER导电复合材料电磁性能产生较大影响。制备的(Ni-CF)-CF-GF/VER导电复合材料有望应用于电磁屏蔽领域。

The purpose of the study is to design and prepare new conductive composites with both electrical and magnetic functions. The chopped carbon fiber （CF） with good conductivity and chopped Ni-plated CF （Ni-CF） with both magnetic and conductive properties were used as the functional body. The chopped glass fiber （GF） was used as the filler, the vinyl ester resin （VER） was used as the matrix, and the electromagnetic properties can be con- trolled. The effects of CF content on the volume resistivity of CF-GF/VER conductive composites were studied. The effects of Ni-CF length on the volume resistivity of （Ni-CF）-CF-GF/VER were also investigated. The effects of Ni-CF content on the volume resistivity of the composites were investigated. The volume resistivity and magnetic permeability, and the electromagnetic shielding performance of conductive composite material were preliminarily ex- plored. The results show that the volume resistivity is adjustable from 0.35 to 36.48 Ω·cm, and the permeability is adjustable from 0.2 to 0.7. The CF and Ni-CF content and length will have a great influence on the electromagnetic properties of （Ni-CF）-CF-GF/VER conductive composites. The prepared （Ni-CF）-CF-GF/VER conductive com- posites are expected to be used in the field of electromagnetic shielding.