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CN-121976421-A - High-adhesion water-based resin coating material suitable for decorative paper, and preparation method and application thereof

CN121976421ACN 121976421 ACN121976421 ACN 121976421ACN-121976421-A

Abstract

The invention provides a high-adhesion water-based resin coating material suitable for decorative paper, a preparation method and application thereof, and belongs to the technical field of resin materials, wherein the high-adhesion water-based resin coating material comprises, by weight, 20-80 parts of water-based resin, 1-10 parts of organic filler, 0.5-5 parts of cross-linking agent, 0.1-1 part of leveling agent, 0.1-3 parts of wetting dispersant, 0.1-1 part of defoaming agent, 1-20 parts of pigment, 1-10 parts of auxiliary agent and 10-60 parts of water, the water-based resin consists of water-based acrylic acid modified epoxy ester and water-based polyurethane dispersoid, and the cross-linking agent is water-based closed isocyanate cross-linking agent. The coating material prepared by the invention can better meet the requirements of decoration paper gravure printing by optimizing the raw material formula, and has the advantages of environmental protection, high adhesive force, high stability and the like.

Inventors

  • SHENG LIXIN
  • Zheng Wenlue
  • SHENG TONG

Assignees

  • 杭州盛大装饰纸科技有限公司

Dates

Publication Date
20260505
Application Date
20251218

Claims (10)

  1. 1. The high-adhesion water-based resin coating material suitable for the decorative paper is characterized by comprising the following raw materials in parts by weight: 20-80 parts of aqueous resin, 1-10 parts of organic filler, 0.5-5 parts of cross-linking agent, 0.1-1 part of leveling agent, 0.1-3 parts of wetting dispersant, 0.1-1 part of defoamer, 1-20 parts of pigment, 1-10 parts of auxiliary agent and 10-60 parts of water, wherein the aqueous resin consists of aqueous acrylic acid modified epoxy ester and aqueous polyurethane dispersoid.
  2. 2. The high-adhesion aqueous resin coating material suitable for decorative paper according to claim 1, comprising the following raw materials in parts by weight: 35-55 parts of water-based resin, 2-4 parts of organic filler, 1-3 parts of cross-linking agent, 0.3-0.6 part of leveling agent, 0.5-1.5 parts of wetting dispersant, 0.2-0.5 part of defoamer, 5-10 parts of pigment, 3-5 parts of auxiliary agent and 30-40 parts of water.
  3. 3. The high adhesion aqueous resin coating material for decorative paper according to claim 1, wherein the weight ratio of the aqueous acrylic modified epoxy ester and the aqueous polyurethane dispersion is 1:0.5-1.
  4. 4. The high adhesion aqueous resin coating material for decorative paper according to claim 1, wherein the crosslinking agent is an aqueous blocked isocyanate crosslinking agent.
  5. 5. The high-adhesion aqueous resin coating material for decorative paper according to claim 1, wherein the organic filler is composed of glycidyl ether oxypropyl cage-like polysilsesquioxane, carboxylated cellulose nanofibers.
  6. 6. The high-adhesion aqueous resin coating material for decorative paper according to claim 5, wherein the weight ratio of the glycidyl ether oxypropyl cage polysilsesquioxane to the carboxylated cellulose nanofibers is 1:2-5.
  7. 7. The high-adhesion water-based resin coating material suitable for decorative paper according to claim 1, wherein the leveling agent is an acrylic leveling agent, the pigment is any one of titanium white, carbon black, chrome green, iron red, cobalt oxide, lithol scarlet and phthalocyanine blue, and the auxiliary agent is one or a mixture of more than two of propylene glycol methyl ether, ethylene glycol butyl ether, ethylene glycol methyl ether and ethyl acetate.
  8. 8. The high-adhesion aqueous resin coating material for decorative paper according to claim 1, wherein the wetting dispersant is one or a mixture of two or more of wetting dispersant Tego 755w, wetting dispersant Tego 650 and wetting dispersant Tego 651, and the defoamer is one or a mixture of two or more of defoamer BYK-024, defoamer BYK-022 and defoamer BYK-011.
  9. 9. The method for producing a high-adhesion aqueous resin coating material suitable for use in decorative paper according to any one of claims 1 to 8, comprising the steps of: And accurately weighing the raw materials according to the formula, adding the water-based resin, the defoamer, the auxiliary agent and the water into a high-speed stirrer, stirring for 10-20min, then adding the organic filler, the cross-linking agent, the flatting agent, the wetting dispersant and the pigment, and continuously stirring for 10-30min to obtain the high-adhesion water-based resin coating material suitable for decorative paper.
  10. 10. The high-adhesion water-based resin coating material is suitable for the decoration paper and is characterized by being applied to the preparation of the decoration paper.

Description

High-adhesion water-based resin coating material suitable for decorative paper, and preparation method and application thereof Technical Field The invention belongs to the technical field of resin materials, and particularly relates to a high-adhesion water-based resin coating material suitable for decorative paper, and a preparation method and application thereof. Background With the rapid development of home decoration and building material industry, the demand of decorative paper as surface decorative material for furniture, floors and the like is continuously growing. Gravure printing is a direct printing mode, which uses the concave part of the graph and text on the gravure to store ink, and transfers the ink to a printing stock through the pressure of a printer, thereby forming clear patterns and characters, and having good image expressive force and stable printing quality. The intaglio printing can show rich color layers and fine texture effects, is particularly suitable for copying bionic patterns such as wood grains, stones and the like, and is a main printing mode in the production of decorative materials such as wallpaper and the like. The conventional ink has insufficient adhesive force and stability on a substrate, is easy to cause problems of fading, cracking and the like, and Volatile Organic Compounds (VOCs) generated in the printing process are not friendly to the environment, so that the application of the conventional ink in the field of high-end decoration is limited. Therefore, how to improve the printing quality and simultaneously consider the environmental protection property and the material adaptability becomes a key problem to be solved by the industry. Currently, the ink for intaglio printing of decorative papers mainly consists of resin, pigment, solvent and auxiliary agent. The resin is used as a film forming main body of the ink, good cohesiveness and film forming strength are required, the pigment is responsible for providing color expressive force, the solvent is used for adjusting the viscosity of the ink and promoting drying, and the auxiliary agent is used for improving rheological property, adhesive force and other performances. The common ink preparation process comprises the steps of resin dissolution, pigment dispersion, auxiliary agent compounding, filtering treatment and the like. At present, most ink systems have the following problems that solvent-based ink depends on high VOCs solvents such as toluene, xylene and the like, so that the solvent-based ink not only pollutes the environment, but also can cause potential safety hazards, the water-based ink is environment-friendly, but has low drying speed, uneven coating or insufficient adhesive force after printing is easy to cause, and the traditional resin system has limited compatibility with a base material, and particularly, a stable bonding layer is difficult to form on porous or nonpolar materials. In response to the above problems, researchers have attempted to improve ink properties by various means. For example, functional resin is introduced to enhance film forming strength, functional filler is added to improve adhesion of the ink and the substrate, the environmental protection and drying efficiency are balanced by adjusting the solvent ratio, and primer is pre-coated on the surface of the substrate or plasma treatment is adopted to improve the binding force of the ink. However, these methods still have the limitations that the cost of the functional resin is often high, the large-scale popularization is difficult, the rheological unbalance is easy to be caused by the adjustment of a solvent system, the printability is affected, and the complexity of the surface treatment process is high. Therefore, development of a coating material special for gravure printing of decorative paper with high adhesive force, low VOCs emission and strong suitability is needed, which not only accords with the development trend of green manufacturing, but also provides technical support for the high-quality development of the decorative paper industry. Disclosure of Invention The invention aims to provide a high-adhesion water-based resin coating material suitable for decorative paper, which is capable of remarkably improving the adhesion, stripping force and stability of the coating material by optimizing the raw material formula and adopting the synergistic effect of specific water-based resin, organic filler and other components. In order to achieve the above object, the present invention provides the following technical solutions: The invention provides a high-adhesion water-based resin coating material suitable for decorative paper, which comprises the following raw materials in parts by weight: 20-80 parts of water-based resin, 1-10 parts of organic filler, 0.5-5 parts of cross-linking agent, 0.1-1 part of leveling agent, 0.1-3 parts of wetting dispersant, 0.1-1 part of defoamer, 1-20 parts of pigment, 1-10 parts of auxil