▎ 摘　　要

NOVELTY - Improving electrothermal performance of electrothermal film by using intercalation and bridge comprises preparing the electric heating film by printing conductive ink on the substrate by screen printing method, where the conductive ink comprises 15-40 pts. wt. conductive filler, 20-50 pts. wt. organic solvent, 5-35 pts. wt. resin adhesive , 0.5-1 pt. wt. antifoaming agent, 0.5-2 pts. wt. flatting agent, 2-10 pts. wt. wetting dispersant, 0.5-2 pts. wt. antioxidant and 0.5-2 pts. wt. plasticizer, where the conductive filler comprises carbon-based conductive substances with spherical and lamellar microstructures in a mass ratio of 29:1-1:1, the conductive fillers with different microstructures interacts to build more complete and efficient conductive paths, the spherical conductive substance is ultrafine carbon powder with a particle size of 30-200 nm, the lamellar conductive material is graphite powder, graphite nanosheet, graphene and/or MXene. USE - The electrothermal film is useful in electrothermal clothes, electrothermal carpet, electrothermal floor, electrothermal wall, as new material for resisting cold and heating, in the fields of electrothermal materials e.g. window defrosting, outdoor display, household electric heater, thermal therapy, and medical electric heating (claimed). ADVANTAGE - The film: has more efficient conductive path with larger density, economically and efficiently improved electric heating performance, rheology property and electric heat performance are excellent; intercalates and bridges to build a conductive network, so as to have excellent electrothermal performance; has simple production process, low cost, excellent printing adaptability, controllable film layer resistor excellent flexibility, and fast response to power-on and recyclability; is suitable for large scale production; utilizes ball milling technology to finish mixing and grinding in one step with excellent dispersibility, low cost of superfine carbon powder as conductive filler and sheet layer-graphite layer between the superfine carbon powder to construct conductive paths, phenolic resin and epoxy resin as mixed resin; and adjusts rheological property of the system.