A preparation method of graphene-based far-infrared electrothermal film without coating and printing

Abstract

The invention discloses a method for preparing a graphene-based far-infrared electric heating film without coating and printing, which comprises the following steps: selecting an environmentally friendly polyester film, coating resin glue on the surface where a current-carrying bar needs to be attached, and performing drying detection. Finally, the cut-off strips are attached to the resin glue on both sides, the graphene-based conductive polymer is added to the first extruder, and the synthetic resin compound is added to the second extruder, and at the same time it is melted at high temperature through the distributor from the multi-flow A film with the same thickness is extruded by a co-extrusion die. As the heating layer and adhesive layer, the environmentally friendly polyester film is selected again, and it is extruded and compounded synchronously with the previous process to form a graphene-based far-infrared electric heating film that does not need coating and printing. The invention can improve the safety performance of the electric heating film, alleviate the pressure of the existing process of coating and printing on environmental protection, save energy and reduce emissions, and the processing technology is simple.

Description

technical field [0001] The invention relates to the technical field of electrothermal film preparation, in particular to a method for preparing a graphene-based far-infrared electrothermal film without coating and printing. Background technique [0002] In recent years, the country has paid more and more attention to graphene materials. With the adjustment and promotion of the national coal-to-electricity policy, winter heating has entered a new field. Graphene, as the king of new energy black gold materials, is an extended application solution " "Graphene-based electric heating film" has been included in the "Green Building Selected Products" by the country, and the electric heating film has officially begun to enter the lives of the masses. Since the graphene electric heating film has the characteristics of high electrothermal conversion efficiency, fast heating speed, long life, small magnetic radiation, safety and maintenance-free, it is an energy-saving, comfortable, an...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the electrothermal films widely used in the market are solvent-based. The conductive solvent is coated on the insulating substrate through printing, coating, and other processes, and then laminated or compounded after heating and drying. The existing process is relatively complicated. , the waste rate is high, it cannot be molded at one time, a large amount of energy is consumed in the drying process, and the waste gas, solid waste, and hazardous waste generated by the preparation will pollute the environment and must be collected, purified and professionally treated