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CN-122008714-A - Intermediate-temperature ink-jet printing composite material based on plastic powder printing layer and preparation and application thereof

CN122008714ACN 122008714 ACN122008714 ACN 122008714ACN-122008714-A

Abstract

The invention discloses a medium-temperature ink-jet printing composite material based on a molding powder printing layer, a preparation method thereof and application thereof in building decoration, automobile interior decoration, household appliance appearance or electronic device shells. The medium-temperature ink-jet printing composite material comprises a substrate layer, a powder molding material layer and an ink-jet printing layer, wherein the powder molding material layer is formed by spraying powder molding materials through static electricity, heating, melting and crosslinking, one surface of the powder molding material layer is connected with the substrate layer, the other surface of the powder molding material layer is connected with the ink-jet printing layer, the powder molding material comprises thermosetting resin, thermoplastic resin and a curing agent, and the ink-jet printing layer is formed by drying and curing at 150-300 ℃ after spraying medium-temperature curing ink-jet ink. The invention realizes the stable combination of the medium temperature ink jet printing layer on various inert substrates on the premise of not depending on the high temperature sintering process, has the advantages of low energy consumption, wide applicable substrate range, strong process compatibility and the like, and is suitable for industrial popularization and application.

Inventors

  • ZHANG XINYUE
  • HUANG HE

Assignees

  • 宁波高硕新材科技有限公司

Dates

Publication Date
20260512
Application Date
20260205

Claims (9)

  1. 1. The medium-temperature ink-jet printing composite material based on the molding powder printing layer is characterized by comprising a substrate layer, a molding powder printing layer and an ink-jet printing layer; The plastic powder printing layer is formed by electrostatic spraying of plastic powder materials and heating, melting and crosslinking, one surface of the plastic powder material is connected with the substrate layer, and the other surface of the plastic powder material is connected with the ink-jet printing layer; the ink-jet printing layer is formed by drying and curing at 150-300 ℃ after spraying medium-temperature curing ink-jet ink.
  2. 2. The intermediate temperature inkjet printing composite material based on a plasticizer powder printing layer according to claim 1, wherein the substrate layer comprises one or more of glass, ceramic rock plate, metal substrate, soft porcelain material.
  3. 3. The intermediate temperature inkjet printing composite material based on a powder printing layer according to claim 1, wherein the surface roughness Ra of the powder printing layer is 0.5-1.1 μm and the surface energy is 35-60 mN/m.
  4. 4. The modeling powder support layer-based medium temperature inkjet printed composite material of claim 1, wherein the modeling powder material is solvent-free; In the plastic powder material, the total mass ratio of the thermosetting resin to the thermoplastic resin is not less than 50%; In the plastic powder material, the mass ratio of the thermosetting resin to the thermoplastic resin is (1.5-15) 1; In the plastic powder material, the mass of the curing agent is 3% -20% of the mass of the thermosetting resin; The thermosetting resin comprises one or more than two of epoxy resin, thermosetting polyester resin, acrylic resin, polyurethane resin and fluorocarbon resin; The thermoplastic resin comprises one or more than two of polyolefin resin, polyamide resin and thermoplastic polyester resin; The curing agent comprises one or more of phenolic curing agent, anhydride, hydroxyalkylamide, dicyandiamide and dicyandiamide accelerating derivative.
  5. 5. The intermediate temperature inkjet printing composite material based on a plastic powder printing layer according to claim 1, wherein the temperature of heating, melting and crosslinking is 150-300 ℃.
  6. 6. The medium temperature inkjet printing composite material based on a plasticizer powder printing layer according to claim 1, wherein the viscosity of the medium temperature curing inkjet ink is 7-35 mpa.s, and the ink particle size D90 is less than 1 μm.
  7. 7. The millbase-based inkjet printed composite material of claim 1, wherein the millbase-cured inkjet ink consists of a base paste and additives; the base slurry comprises, by mass, 20-60% of color paste, 20-60% of resin component and 10-40% of solvent; The additive is added in an amount of 0.1-5% of an anti-settling agent, 0.1-5% of an ultraviolet absorber, 0.1-5% of a light stabilizer, 0.01-2% of a dispersing agent, 0.01-0.3% of a leveling agent, 0.1-0.5% of a defoaming agent and 2-20% of a film forming auxiliary agent based on the total mass of the base slurry.
  8. 8. The method for preparing the intermediate temperature inkjet printing composite material based on the plastic powder printing layer according to any one of claims 1 to 7, which is characterized by comprising the following steps: electrostatically spraying a molding powder material on the surface of the substrate layer, and forming a molding powder printing layer through heating, melting and crosslinking; And spraying the medium-temperature curing ink-jet ink onto the surface of the molding powder printing layer to form a pattern, and drying and curing at 150-300 ℃ to form the ink-jet printing layer.
  9. 9. The use of a medium temperature inkjet printed composite material based on a plasticizer-receptive layer according to any of claims 1 to 7 in architectural decorations, automotive interiors, household electrical appliance appearance or electronic device housings.

Description

Intermediate-temperature ink-jet printing composite material based on plastic powder printing layer and preparation and application thereof Technical Field The invention relates to the technical field of surface treatment and ink-jet printing, in particular to a medium-temperature ink-jet printing composite material based on a molding powder printing layer, and a preparation method and application thereof. Background The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art. The ink jet printing technology has been widely used in the fields of building decoration materials, home appliance appearances, automobile interiors, electronic product shells and the like by virtue of the advantages of high resolution, non-contact processing mode and adaptation to the requirements of personalized decorations. In the existing industrial application, ink is usually directly sprayed on the surface of a substrate such as glass, ceramic, metal and the like by ink jet printing, and pattern curing is realized by means of high-temperature sintering, ultraviolet curing or medium-low temperature resin film forming. However, since the surface structure of the base material such as glass, ceramic and metal is compact, the ink absorption is poor, the medium-temperature or low-temperature curing type inkjet ink is difficult to form a stable mechanical anchoring structure on the surface, and the problems of insufficient adhesion of a printing layer, poor scrubbing resistance and limited weather resistance are prominent. Especially in the application scene of unsuitable adoption high temperature firing technology more than 600 ℃, the problem has further limited the popularization and application of medium temperature inkjet printing technique. The electrostatic spraying plastic powder coating has been widely used in the fields of building members, metal products, home appliance shells and the like because of its ability to form a dense, tough coating structure on the surface of a substrate and firmly bonded with the substrate. For example, patent specification with publication number CN120623897A discloses low-temperature curing type electrostatic spraying plastic powder and a production process thereof, wherein the low-temperature curing type electrostatic spraying plastic powder comprises modified polyester resin, thermal expansion microspheres, modified amide wax, latent curing agent, conductive composite filler, pigment filler and auxiliary agent, and is suitable for high-efficiency and environment-friendly spraying of heat-sensitive base materials such as aluminum alloy and the like. However, the existing plastic powder coating is mainly used for protection or single decoration, and the surface of the plastic powder coating usually has certain roughness and microstructure non-uniformity, so that the strict requirements of high-precision ink-jet printing on interface flatness, wettability and chemical compatibility are difficult to meet. Thus, the coating has not been considered as an ideal ink jet printing substrate interface, which is generally considered by the relevant art to be unsuitable for direct printing of high resolution patterns. Under the background, the invention breaks through the traditional cognition, and realizes the construction of the functional coating suitable for medium-temperature ink-jet printing on inert substrates such as glass, ceramics, metals and the like on the premise of not depending on a high-temperature sintering process by carrying out targeted design and regulation on the composition of the plastic powder material, the surface structure of the coating and the interface characteristic. The coating not only maintains the excellent adhesive force and weather resistance of the traditional molding powder, but also has good ink compatibility and pattern precision, thereby providing a feasible interface solution for the medium-temperature ink-jet printing technology in high-adhesive force and high-weather-resistance application scenes. Disclosure of Invention Aiming at the technical problems and the defects in the art, the invention provides a medium-temperature inkjet printing composite material based on a plastic powder printing layer, a preparation method and application thereof, and can solve the problem of insufficient adhesive force of medium-temperature curing inkjet ink when directly printed on the surface of an inert substrate such as glass, ceramic, metal and the like. The invention realizes the stable combination of the medium temperature ink jet printing layer on various inert substrates on the premise of not depending on the high temperature sintering process, has the advantages of low energy consumption, wide applicable substrate range, stron