功能粒子种类对涂层涤棉织物电磁性能的影响

Influence of Functional Particles on Electromagnetic Properties of Coated Polyester Cotton Fabrics

以平纹涤棉混纺织物为基体,以聚氨酯为粘着剂,以石墨、氧化铋、石墨烯及三者混合物为功能粒子,用涂覆法制备涂层涤棉织物。主要探讨功能粒子种类对材料的介电性能、吸波性能和屏蔽性能的影响。研究表明,功能粒子种类对电磁性能影响较大。在0.01~3 GHz范围内,以石墨烯为功能粒子,材料的介电常数最大、电磁防护性能最好;在1.98~3 GHz范围内,将石墨、氧化铋和石墨烯共混作为功能粒子,可优化阻抗匹配,使反射损耗最小、电磁波吸收能力最好,吸波性能优于单一功能粒子。

The coated polyester cotton fabrics were prepared by coating method,and on plain polyester cotton blended fabrics,polyurethane was used as adhesive,while graphite,bismuth oxide,graphene and their mixtures were used as functional particles.The influences of types of functional particles on dielectric properties,wave-absorbing properties and shielding properties to electromagnetic waves were explored.The results show that the types of functional particles have a great influence on the electromagnetic properties.Within the range 0.01—3 GHz,the coated polyester cotton fabrics with graphene used as the functional particles have the largest dielectric constant and the best electromagnetic protection performance.Within the range 1.98—3 GHz,the coated polyester cotton fabrics with the mixture of graphite,bismuth oxide and graphene used as the functional particles have great impedance matching,the minimum reflection loss,and the best electromagnetic wave absorption capacity,whose the electromagnetic performance was better than the single functional particles.