Electric heating printing ink as well as preparation method and application thereof

Abstract

The invention provides electric heating printing ink as well as a preparation method and application thereof. The electric heating printing ink contains the following components in parts by mass: 2-10parts of a conductive filler, 1-9.9 parts of a dispersing agent, 30-50 parts of resin and 30-55 parts of a solvent, wherein the conductive filler is conductive carbon black containing graphene and further contains functional elements, the mass ratio of carbon to oxygen in graphene is (20-60) to 1, and the functional elements at least include Fe, Si and Al. The electric heating printing ink provided by the invention has the advantages of high electric heat conversion rate and electric heat radiation conversion rate, stable conductivity and long service life, the power attenuation is reduced, the resistance is adjustable and is minimally 5 omega/formula (shown in the description), the electric heat radiation conversion rate maximally can be 80%, the power attenuation minimally can be 0.5%,the service life minimally can be over 100000h, and the working temperature minimally can be 400 DEG C.

Description

technical field [0001] The invention belongs to the technical field of heating ink, and relates to an electric heating ink and a preparation method and application thereof. Background technique [0002] Electrothermal ink means that after the ink is cured, when the current passes, the ink layer can convert electrical energy into heat energy, which is currently widely used in the field of electrothermal. According to the main conductive agent in the ink, it includes metal-based electrothermal ink and carbon-based electrothermal ink. Metal-based electric heating ink has good electrical conductivity and low resistance, but it is easy to oxidize, expensive and non-renewable. Compared with metal-based electrothermal inks, carbon-based electrothermal inks have the advantages of high electrothermal conversion efficiency, low price, and non-toxic and harmless to the human body. It is a functional ink with broad market prospects and is widely used in daily life and agriculture. Cul...

AI Technical Summary

Problems solved by technology

However, graphene has a sheet structure, and the contact resistance between sheets is relatively large. Electrothermal inks prepared solely with graphene as a conductive agent are easy to agglomerate, so the dispersion is poor, the resistance is large, and the electrothermal performance is poor.

[0005] CN108250844A discloses a kind of preparation method of water-based graphene high conductive ink, described water-based conductive ink comprises the following components in mass percentage: graphene dispersion liquid 0.1-40%, resin mixed liquid 10-60%, solvent 5-30% %, the graphene dispersion includes graphene powder, graphene nanosheets and high-conductivity carbon black, and the resin dispersion is selected from the mixed solution of the following resins: water-based epoxy resin, water-based acrylate resin, water-based alkyd Resin, water-based saturated polyester resin and water-based amino resin or modified amine latent curing agent, the mixing aid is selected from at least one of wetting and dispersing agent, defoaming agent, leveling agent, thickener, so The volumetric conductivity of the water-based graphene high-conductivity ink is low, but the stability of the graphene dispersion is poor, and there is still a phenomenon of easy agglomeration and the heat resistance of the resin is poor, which easily affects its conductive stability.

CN103275552A discloses a carbon-based electrothermal ink and a preparation method thereof. The mass percentage composition of the carbon-based electrothermal ink is: carbon nanotubes 0-2%, superconducting carbon black 4-12%, conductive graphite 15-30%, resin 10- 25%, 40-60% of solvent and 0.2-6% of additives. The preparation method includes: pulverizing the granular polyester resin in the resin to an average particle diameter of 0.5mm or less, and then mixing with carbon nanotubes, superconducting carbon black, conductive Graphite, solvents, additives and other components in the resin are mixed evenly, and then ground by a three-roll mill to a fineness of less than 50 microns, and then ground by a sander to a fineness of less than 20 microns, filtered, and the carbon-based electric heater The viscosity range of the ink is 40-100Pa·S. The carbon-based electrothermal ink of the present invention has a relatively low solid content and has good adaptability to the printing process, but its thermal stability is still poor, which will affect its conductive stability

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