Preparation method of flexible low-voltage composite polymer heating film

Abstract

The invention provides a preparation method of a flexible low-voltage composite polymer heating film. The preparation method comprises the following steps: plasticating a thermoplastic elastomer on anopen mill to a transparent state; putting the plasticated thermoplastic elastomer, half of the uniformly mixed solid powder, the high-fluidity agent and the anti-aging agent into an internal mixer tobe uniformly mixed, and then continuously adding the other half of the uniformly mixed solid powder and the base oil to be internally mixed; crushing the materials mixed by the internal mixer, and putting the crushed materials into an extruder for extrusion; putting the extruded materials into a four-roller calender, and pressing to obtain a composite film with the thickness of 0.1-0.3 mm; printing a conductive coating on the graphene composite film by using silk-screen printing equipment, and carrying out heating and drying; placing the graphene composite film printed with the conductive coating in an oven to be baked; and attaching a resin soft film to the graphene composite film, wherein the resin soft film is located between the graphene composite film and the resin soft film. The preparation method has the advantages of low-voltage quick heating, uniform heat, low manufacturing cost, safety in use, convenience, reliable texture and the like.

Description

technical field [0001] The invention belongs to the technical field of heating films, and more specifically relates to a preparation method for printing low-pressure heating flexible films with silver paste. Background technique [0002] At present, most of the more common heating materials on the market are traditional electric heating wire, silicon carbide and more advanced PTC ceramic heating elements. Recently, carbon fiber heating materials have appeared on the market. Most of these heating materials are hard and brittle in texture and uneven in heating density. , long-term use will lead to dry skin, thirst and other phenomena, which does not meet the rapid development of the current socio-economic level and people's pursuit of high-quality life. At the same time, most of the more common heating materials on the market use a higher power supply voltage to meet the heating requirements, which is not conducive to the safety and portability of the heating film. Contents ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the more common heating materials on the market are traditional electric heating wire, silicon carbide and more advanced PTC ceramic heating elements. Recently, carbon fiber heating materials have appeared on the market. Most of these heating materials are hard and brittle in texture and uneven in heating density. , long-term use will lead to dry skin, thirst and other phenomena, which does not meet the rapid development of the current socio-economic level and people's pursuit of high-quality life

At the same time, most of the more common heating materials on the market use a higher power supply voltage to meet the heating requirements, which is not conducive to the safety and portability of the heating film.

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