聚酰亚胺/石墨烯/银三相复合薄膜的制备和性能研究

In order to obtain the composite with excellent conductivity as well as electromagnetic shielding, a three-phase polyimide/graphene/sliver composite film was produced via inserting (1,1,1-trifluoro-2,4-pentadionato) silver(I) (AgTFA) as sliver precursor and graphene into polyimide (PI) matrix. The conductivity and electro-magnetic shielding effectiveness of the three-phase composite film in different graphene's mass fraction or thermal curing procedure were studied. The results revealed that the composite film containing 20 wt % graphene and 10 wt % sliver exhibited excellent electromagnetic shielding properties as well as electrical conductivity when it was imidized under 320℃ for 5 hours.