▎ 摘　　要

NOVELTY - A polyimide composite film comprises a core layer comprising a polyimide resin (A) and graphene, and a skin layer comprising a polyimide resin (B) and formed in a state bonded to both sides of the core layer, and has electromagnetic wave shielding rate of 30-60 dB, modulus of 2-5 GPa, and tensile strength of 180 MPa or more. USE - Polyimide composite film used for electronic component (claimed) used in portable electronic devices, communication devices and optical applications. ADVANTAGE - The polyimide composite film has excellent electromagnetic wave shielding performance, physical properties, sliding properties, thermal conductivity, corona resistance, loop hardness, tensile strength, film forming properties, and insulating properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of polyimide composite film, which involves depositing a composition (C1) comprising a polyamic acid (X) solution and graphene and a composition (C2) comprising a polyamic acid solution (Y) stacked adjacent to each other, and imidizing the film-formed composition (C1) and composition (C2), in which the polyimide composite film comprising a core layer derived from the composition (C1) and a skin layer derived from the composition (C2).