CN112920637A - Preparation method of ceramic tile-imitated wood floor by digital ink-jet 3D printing and wood floor - Google Patents
Preparation method of ceramic tile-imitated wood floor by digital ink-jet 3D printing and wood floor Download PDFInfo
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- CN112920637A CN112920637A CN202110036105.2A CN202110036105A CN112920637A CN 112920637 A CN112920637 A CN 112920637A CN 202110036105 A CN202110036105 A CN 202110036105A CN 112920637 A CN112920637 A CN 112920637A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Organic Chemistry (AREA)
- Architecture (AREA)
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- Civil Engineering (AREA)
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- Floor Finish (AREA)
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Abstract
The invention discloses a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which comprises the following steps: sequentially forming a hole filling layer, a hydrophobic coating, a decorative pattern and a wear-resistant coating on the wood base material to obtain a finished product of the ceramic tile-imitated wood floor; the hydrophobic coating is mainly prepared from modified polyurethane acrylate dispersoid, graphene oxide, azobenzene and polytetrafluoroethylene. The modified polyurethane acrylate dispersoid is mainly formed by mixing a polyurethane acrylate dispersoid, a silane coupling agent and inorganic nano powder dispersion liquid. The inorganic nano powder is one or more of nano cerium oxide powder, nano titanium oxide powder and nano silicon oxide powder. Correspondingly, the invention also discloses a wood floor. The wooden floor prepared by the invention has beautiful and real surface patterns, the resolution ratio can reach above 9600dpi, and the wooden floor is waterproof, moistureproof, wear-resistant, antistatic and more durable.
Description
Technical Field
The invention belongs to the technical field of wood floors, and particularly relates to a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing and a wood floor.
Background
The wood floor is deeply loved by people due to unique and attractive patterns, but the wood also has natural defects of knots and the like, and the wood chips need to be selected in the processing and manufacturing process, so that a large amount of labor cost and material waste are brought, and the wood floor is not in accordance with the concept of resource saving and sustainable development.
In order to solve the above problems, some researchers and enterprises have proposed a technical route for applying the inkjet printing technology to the production process of the wood floor, that is, printing the decorative pattern on the surface of the wood floor by using the inkjet printing technology. The ink-jet printing technology is widely applied in the field of ceramic tiles, and provides powerful guarantee for improving the decoration effect of the ceramic tiles. However, since the wood floor surface is very different from the ceramic tile surface, it is difficult to directly utilize the inkjet technology suitable for ceramic tiles. At present, the application of ink-jet printing in the field of wood is still in the beginning stage, and the problems of low printing resolution, poor bonding strength of ink and a base material and the like mainly exist; particularly, as the wood has more interface pores, high water absorption rate, easy water absorption expansion and uneven surface, the printing resolution is low, and the application of the ink-jet printing technology in the field of template wood floor preparation is greatly limited.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, wherein the prepared wood ceramic tile has high surface decoration pattern resolution, the pattern is tightly combined with a base material, and the wear resistance is strong.
The invention also aims to solve the technical problem of providing a wood floor.
In order to solve the technical problem, the invention discloses a preparation method of a digital ink-jet 3D printing ceramic tile-imitated wood floor, which comprises the following steps:
(1) providing a wood substrate;
(2) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
(3) coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
(4) printing a decorative pattern on the surface of the wood base material obtained in the step (3) in an ink-jet manner;
(5) coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
the hydrophobic coating is mainly prepared from the following raw materials in parts by weight:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
85-90 parts of a polyurethane acrylate dispersion;
3-5 parts of a silane coupling agent;
5-10 parts of inorganic nano powder dispersion liquid;
wherein the inorganic nano powder dispersion liquid is a mixed solution of inorganic nano powder and the dispersion liquid;
the inorganic nano powder is one or more of nano cerium oxide powder, nano titanium oxide powder, nano silicon oxide powder and nano tin oxide powder.
As an improvement of the technical scheme, the pore-filling coating is selected from one or more of putty, epoxy resin cement and polyester resin cement;
the coating amount of the pore-filling coating is 100-120 g/m2The coating amount of the wear-resistant coating is 220-280 g/m2。
As an improvement of the technical scheme, the wood base material is plywood formed by hot pressing of 5-8 layers of eucalyptus veneers, and an adhesive is arranged between every two adjacent eucalyptus veneers;
the length of impregnation stripping of the plywood is less than 10mm, the bonding strength is greater than or equal to 1.2MPa, and the thickness is 10-15 mm.
As an improvement of the technical scheme, the adhesive comprises the following components in parts by weight: 1-2 parts of active magnesium oxide, 7-8 parts of phenolic resin, 88-90 parts of MDI resin adhesive and 0.1-1 part of nano titanium dioxide.
As an improvement of the technical scheme, the inorganic nano powder is firstly subjected to plasma fluorination treatment and then is dispersed in a dispersion liquid to prepare an inorganic nano powder solution;
in the inorganic nano powder dispersion liquid, the mass fraction of inorganic nano powder is 22-40%; the dispersion liquid is water and/or alcohol.
As an improvement of the above technical solution, the plasma fluorination treatment includes: placing inorganic nano powder in dielectric barrier discharge plasma equipment, and carrying out plasma fluorination treatment on the inorganic nano powder by taking carbon tetrafluoride and argon as reaction gases; wherein the treatment voltage is 13-18 kV, the treatment frequency is 55-65 kHz, and the treatment time is 10-30 min;
wherein the volume ratio of the carbon tetrafluoride to the argon is 1 (8-12).
As an improvement of the technical scheme, the inorganic nano powder is selected from nano cerium oxide powder or nano tin oxide powder, and the dispersion liquid is selected from an ethanol water solution, wherein the volume fraction of the ethanol water solution is 55-65%;
in the polyurethane acrylate dispersion, the concentration of polyurethane is 23-28 wt%, the concentration of acrylate is 11-15 wt%, the content of water is 60-65 wt%, the solid content is 37-40%, and the pH value is 6-8.
As an improvement of the technical scheme, the step (3) comprises the following steps:
(3.1) coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
and (3.2) coating an ink-absorbing coating on the hydrophobic coating to form the ink-absorbing coating.
As an improvement of the technical scheme, the hydrophobic coating is prepared by the following method:
(1) uniformly mixing 5-10 parts by volume of inorganic nano powder dispersion liquid, 85-90 parts by volume of polyurethane acrylate dispersion liquid and 3-5 parts by volume of silane coupling agent to obtain modified polyurethane acrylate dispersion liquid;
(2) 0.6-3.5 parts by weight of graphene oxide, 0.5-1 part by weight of azobenzene and 4-10 parts by weight of polytetrafluoroethylene are sequentially added into 86-94 parts by weight of the modified polyurethane acrylate dispersoid, the mixture is stirred and reacted for 40-60 min at the temperature of 60-65 ℃, and then ultrasonic treatment is carried out for 20-40 min, so that a finished product of the hydrophobic coating is obtained.
Correspondingly, the invention also discloses a wood tile which is prepared by the preparation method of the digital ink-jet 3D printing ceramic tile-imitated wood floor.
The implementation of the invention has the following beneficial effects:
the invention relates to a preparation method of a ceramic tile-imitated wood floor printed by digital ink-jet 3D, which comprises the steps of sequentially coating a pore-filling coating and a hydrophobic coating on the surface of a wood substrate, then printing a decorative pattern by ink-jet printing, and finally coating a wear-resistant coating on the decorative pattern. The pore spaces such as micro-conduits on the surface of the wooden substrate can be effectively filled by the pore filling coating, the antistatic performance, the water resistance and the size stability can be effectively enhanced by the hydrophobic coating, the surface self-cleaning of the wooden substrate is realized, the penetration depth of the printing ink in the spraying process is reduced, and the printing precision is improved. Simultaneously, through decorating surface coating abrasion-resistant coating, can promote wooden ceramic tile's surperficial wearability and aesthetic property for wooden ceramic tile is durable more. Through the matching of the structures, the printing precision can reach more than 9600 dpi.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
The invention discloses a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which comprises the following steps of:
s1: providing a wood substrate;
the wood substrate can be natural wood board or plywood, but is not limited thereto. Preferably, the wood substrate is plywood, and the material of the plywood can be beech, cinnamomum camphora, willow, poplar and eucalyptus, but is not limited to the wood.
Preferably, in the invention, the plywood is formed by symmetrically distributing 5-8 layers of eucalyptus veneers, vertically and crisscross assembling the eucalyptus veneers in a crisscross manner, and then hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 1-2 parts of active magnesium oxide, 7-8 parts of phenolic resin, 88-90 parts of MDI resin adhesive and 0.1-1 part of nano titanium dioxide. This kind of plywood stable in structure combines firmly, and has better water proofness. Specifically, the length of impregnation stripping of the plywood is less than 10mm, the bonding strength is more than or equal to 1.2MPa, and the thickness is 10-15 mm.
S2: coating a pore-filling coating on a wood substrate to form a pore-filling layer;
wherein, the pore-filling coating can be one or more of putty, epoxy resin cement and polyester resin cement commonly used in the field. The preferred pore-filling coating is putty which isThe coating amount is 100 to 120g/m2。
The pore-filling coating can fill pores such as micro-conduits on the surface of the wood substrate, enhances the flatness of the surface of the substrate, and provides a good foundation for later-stage coating of other coatings and inkjet printing.
S3: coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
specifically, step S3 includes:
s31: coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
specifically, the hydrophobic coating is mainly prepared from the following raw materials in parts by weight:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
85-90 parts of a polyurethane acrylate dispersion;
3-5 parts of a silane coupling agent;
5-10 parts of inorganic nano powder dispersion liquid;
wherein the inorganic nano powder dispersion liquid is a mixed solution of inorganic nano powder and the dispersion liquid; the mass fraction of the inorganic nano powder is 22-40%. The inorganic nano powder is one or more of nano cerium oxide powder, nano titanium oxide powder, nano silicon oxide powder and nano tin oxide powder. The dispersion may be alcohol and/or water, but is not limited thereto. Preferably, in the invention, the inorganic nano powder is nano cerium oxide powder, and the dispersion liquid is ethanol water solution with volume fraction of 55-65%; the inorganic nano powder dispersion liquid has better compatibility with polyurethane acrylate dispersion.
Specifically, the inorganic nano-powder is dispersed in the dispersion liquid to obtain the inorganic nano-powder dispersion liquid. Preferably, in the invention, the inorganic nano powder is subjected to plasma fluorination treatment and then is dispersed in the dispersion liquid; the dispersion degree of the inorganic nano powder in the hydrophobic coating can be improved through plasma fluorination treatment, the compatibility is improved, the agglomeration is prevented, and various performances of the hydrophobic coating are effectively improved.
Specifically, the plasma fluorination treatment comprises the following steps: (1) placing inorganic nano powder on a quartz glass plate, and then placing the inorganic nano powder and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; (2) charging CF in the ratio of 1 (8-12)4A mixed gas of/Ar; (3) and opening the plasma generator, adjusting the voltage to be 13-18 kV and the frequency to be 55-65 kHz, and carrying out fluorination treatment for 10-30 min to obtain the treated inorganic nano powder.
Among them, the urethane acrylate dispersion is the main matrix of the hydrophobic coating in the invention, has excellent wear resistance, low-temperature film forming property, flexibility and weather resistance, and is widely applied to coatings in various fields. Preferably, in the invention, the aqueous polyurethane acrylate dispersion is selected, wherein the concentration of polyurethane is 23-28 wt%, the concentration of acrylate is 11-15 wt%, the content of water is 60-65 wt%, the solid content is 37-40%, and the pH is 6-8. This type of urethane acrylate dispersion has high mechanical strength, excellent abrasion resistance, and the hardness and softness are less affected by temperature.
The silane coupling agent is mainly used for assisting the dispersion of inorganic nano powder in the polyurethane acrylate dispersoid and improving various performances of the hydrophobic coating. Fluorine-containing silane coupling agents may be used, and specifically, one or more of trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, trifluoropropylmethyldimethoxysilane, heptadecafluorodecyltrimethoxysilane, and tridecafluorooctyltriethoxysilane may be used, but not limited thereto. Preferably, trifluoropropyltrimethoxysilane is used.
Specifically, the polyurethane acrylate dispersion can be modified by fully mixing the polyurethane acrylate dispersion, the silane coupling agent and the inorganic nano powder dispersion.
Specifically, the urethane acrylate dispersion is used in an amount of 85 to 90 parts by volume, for example, 85.5 parts, 86 parts, 87 parts, 88 parts, 88.5 parts, 89 parts, and 89.5 parts, but not limited thereto. The silane coupling agent is used in an amount of 3 to 5 parts, for example, 3.2 parts, 3.5 parts, 3.9 parts, 4.2 parts, and 4.5 parts, but not limited thereto. The amount of the inorganic nano-powder dispersion is 5 to 10 parts by volume, such as 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, and 10 parts, for example, but not limited thereto.
In the hydrophobic coating, graphene oxide is a good interface modifier, and can cooperate with other components in the hydrophobic coating (particularly inorganic nano powder), so that the volume resistivity of the coating is effectively reduced, and the hydrophobic coating is endowed with antistatic performance. The graphene oxide is used in an amount of 0.6 to 3.5 parts, and when the amount of the graphene oxide is more than 3.5 parts, the hydrophobicity of the hydrophobic coating is reduced, and when the amount of the graphene oxide is less than 0.6 part, the volume resistivity of the coating is difficult to be effectively reduced. Preferably, the amount of the graphene oxide is 0.6-2.8 parts, such as 0.8 part, 1.0 part, 1.4 parts, 1.8 parts, 2.2 parts, and 2.6 parts, but is not limited thereto.
The polytetrafluoroethylene and the modified polyurethane acrylate dispersoid can generate copolymerization reaction under the initiation of azobenzene, so that the mechanical strength, the hydrophobic property, the antistatic property and other properties of the hydrophobic coating are effectively improved. The temperature of the copolymerization reaction is 60-65 ℃, and if the reaction temperature is more than 65 ℃, the hydrophobicity of the coating can be reduced. Specifically, the polytetrafluoroethylene is used in an amount of 4 to 10 parts by weight, illustratively 4 parts, 5 parts, 5.5 parts, 6 parts, 8 parts, and 9 parts, but is not limited thereto.
Correspondingly, the invention also discloses a preparation method of the hydrophobic coating, which comprises the following steps:
(1) uniformly mixing 5-10 parts by volume of inorganic nano powder dispersion liquid, 85-90 parts by volume of polyurethane acrylate dispersion liquid and 3-5 parts by volume of silane coupling agent to obtain modified polyurethane acrylate dispersion liquid;
specifically, the inorganic nano powder is subjected to plasma fluorination treatment, then the treated inorganic nano powder is mixed with dispersion liquid, and the mixture is stirred for 15-30 min at the temperature of 40-50 ℃, so that inorganic nano powder dispersion liquid is obtained; and then uniformly mixing the inorganic nano powder dispersion liquid, the polyurethane acrylate dispersion liquid and the silane coupling agent to obtain the polyurethane acrylate/silane coupling agent composite material.
(2) 0.6-3.5 parts by weight of graphene oxide, 0.5-1 part by weight of azobenzene and 4-10 parts by weight of polytetrafluoroethylene are sequentially added into 86-94 parts by weight of the modified polyurethane acrylate dispersoid, the mixture is stirred and reacted for 40-60 min at the temperature of 60-65 ℃, and then ultrasonic treatment is carried out for 20-40 min, so that a finished product of the hydrophobic coating is obtained.
S32: coating ink absorption paint on the hydrophobic coating to form the ink absorption coating
The ink-absorbing coating can enhance the adhesive force between the ink-jet printing ink and the surface of the base material, and can improve the printing precision; so that the high simulation pattern with clear edge, full color and layering sense is formed on the surface of the wood base material.
Specifically, the ink-absorbing coating can be a pure acrylic emulsion ink-absorbing coating or a vinyl acetate acrylic emulsion ink-absorbing coating, and preferably, the pure acrylic emulsion ink-absorbing coating is selected. Such as, but not limited to, an ink receptive coating manufactured by Shanghai Bo help chemical Limited under model number RvoeoXM-380.
The pore filling layer, the hydrophobic coating and the ink absorbing coating form an interface modification layer together, so that the antistatic performance, the water resistance and the size stability of the wood substrate can be effectively enhanced, the surface self-cleaning of the wood substrate is realized, the surface permeation after ink spraying is reduced, the printing precision is greatly improved, the higher adhesive force between the ink and the wood substrate is ensured, the ink is not easy to fall off, and the service life is long.
S4: printing a decorative pattern on the surface of the wood base material obtained in the step S3 by ink jet;
after the interface modification layer is modified, the ink-jet printing precision of the invention is greatly improved, so that the invention can realize the ink-jet printing of high-simulation natural wood grains. Meanwhile, the printing speed is greatly increased (the printing speed can reach more than 30 m/min). In addition, according to the invention, through the construction of the precious tree species gallery, various natural wood grain imitation rapid printing can be carried out, the splicing design of personalized customized patterns can be realized, and the decorative effect of the wood floor tile is greatly enriched.
S5: and coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, thus obtaining the finished product of the ceramic tile-imitated wood floor.
Specifically, the wear-resistant coating can be wear-resistant wood paint common in the field, such as wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 220-280 g/m2。
Correspondingly, the invention also discloses a wood floor which is prepared by the preparation method, has beautiful and real surface patterns, has the resolution ratio of more than 9600dpi, is waterproof and moistureproof, is wear-resistant and antistatic, and is more durable.
Further, the method also comprises the following steps: after the interface modification layer, the pattern layer and the wear-resistant coating are formed, the interface modification layer, the pattern layer and the wear-resistant coating are cured by photo-curing.
The invention is further illustrated by the following specific examples:
example 1
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 2 parts of active magnesium oxide, 7 parts of phenolic resin, 90 parts of MDI resin adhesive and 1 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating is epoxy daub produced by Guizhou Zonengda building material Co., Ltd, and the coating amount is 120g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
87 parts of a polyurethane acrylate dispersion;
4 parts of a silane coupling agent;
9 parts of inorganic nano powder dispersion liquid;
wherein the silane coupling agent is tridecafluorooctyltriethoxysilane, the polyurethane dispersion has a polyurethane concentration of 25 wt%, an acrylate concentration of 14 wt%, a water content of 61 wt%, a solid content of 38% and a pH of 7.
The inorganic nano powder dispersion liquid is a mixed solution of nano tin oxide powder (with the content of 30 wt%) and water.
The preparation method of the hydrophobic coating comprises the following steps:
(1) dispersing the nano tin oxide powder into water to obtain inorganic nano powder dispersion liquid;
(2) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(3) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting for 45min at 62 ℃, and then carrying out ultrasonic treatment for 20min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 140g/m2。
Fourthly, ink-jet printing decorative patterns on the surface of the wood base material obtained in the third step;
fifthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 280g/m2。
Example 2
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 2 parts of active magnesium oxide, 7 parts of phenolic resin, 90 parts of MDI resin adhesive and 1 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating adopts putty with the coating amount of 120g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
87 parts of a polyurethane acrylate dispersion;
4 parts of a silane coupling agent;
9 parts of inorganic nano powder dispersion liquid;
wherein, the silane coupling agent is trifluoropropyltrimethoxysilane; in the polyurethane acrylate dispersion, the polyurethane concentration was 25% by weight, the acrylate concentration was 14% by weight, the water content was 61% by weight, the solids content was 38% and the pH was 7.
The inorganic nano powder is a mixed solution of nano tin oxide powder (with the content of 30 wt%) and alcohol (with the content of 70 vol%). And the nano tin oxide powder is subjected to plasma fluorination treatment in advance, and the specific treatment is as follows: placing nano tin oxide powder on a quartz glass plate, and then placing the nano tin oxide powder and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; charging CF in a ratio of 1:104A mixed gas of/Ar; the plasma generator was turned on, the voltage was adjusted to 13kV, the frequency was 55kHZ, and the fluorination treatment was carried out for 15 min.
The preparation method of the hydrophobic coating comprises the following steps:
(1) performing plasma fluorination treatment on the inorganic nano powder, and then dispersing the inorganic nano powder into alcohol at 45 ℃ to obtain inorganic nano powder dispersion liquid;
(3) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(4) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting at 62 ℃ for 40min, and then carrying out ultrasonic treatment for 20min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 140g/m2。
Fourthly, coating ink absorption paint on the hydrophobic paint layer to form an ink absorption coating;
wherein the ink-absorbing coating is made of RvoeoXM-380 ink-absorbing coating produced by Shanghai Bozhang chemical Co., Ltd; the coating weight was 80g/m2；
Fifthly, ink-jet printing a decorative pattern on the surface of the wood base material obtained in the step (four);
sixthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 280g/m2。
Example 3
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 1.6 parts of active magnesium oxide, 7.8 parts of phenolic resin, 89.8 parts of MDI resin adhesive and 0.8 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating adopts putty with the coating amount of 100g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
87 parts of a polyurethane acrylate dispersion;
4 parts of a silane coupling agent;
9 parts of inorganic nano powder dispersion liquid;
wherein, the silane coupling agent is trifluoropropyltrimethoxysilane; in the polyurethane acrylate dispersion, the polyurethane concentration was 25% by weight, the acrylate concentration was 13% by weight, the water content was 62% by weight, the solids content was 38% and the pH was 7.
The inorganic nano powder is a mixed solution of nano cerium oxide (content 25 wt%) and alcohol (60 vol%). And the nanometer cerium oxide is subjected to plasma fluorination treatment in advance, and the specific treatment is as follows: placing the nano cerium oxide on a quartz glass plate, and then placing the nano cerium oxide and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; charging CF in a ratio of 1:104A mixed gas of/Ar; the plasma generator was turned on, the voltage was adjusted to 13kV, the frequency was 55kHZ, and the fluorination treatment was carried out for 15 min.
The preparation method of the hydrophobic coating comprises the following steps:
(1) subjecting inorganic nano powder to plasma fluorination treatment, and then dispersing (40 ℃, stirring for 20min) into alcohol to obtain inorganic nano powder dispersion liquid;
(3) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(4) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting for 40min at 65 ℃, and then carrying out ultrasonic treatment for 20min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 120g/m2。
Fourthly, coating ink absorption paint on the hydrophobic paint layer to form an ink absorption coating;
wherein the ink-absorbing coating is made of RvoeoXM-380 ink-absorbing coating produced by Shanghai Bozhang chemical Co., Ltd; the coating weight was 90g/m2；
Fifthly, ink-jet printing a decorative pattern on the surface of the wood base material obtained in the step (four);
sixthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 240g/m2。
Example 4
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 1.6 parts of active magnesium oxide, 7.8 parts of phenolic resin, 89.8 parts of MDI resin adhesive and 0.8 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating adopts putty with the coating amount of 100g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
89 parts of a polyurethane acrylate dispersion;
5 parts of a silane coupling agent;
6 parts of inorganic nano powder dispersion liquid;
wherein, the silane coupling agent is trifluoropropyltrimethoxysilane; the polyurethane concentration was 25% by weight, the acrylate concentration was 13% by weight, the water content was 62% by weight, the solids content was 38% and the pH was 7.
The inorganic nano powder is a mixed solution of nano cerium oxide (content 25 wt%) and alcohol (60 vol%). And the nanometer cerium oxide is subjected to plasma fluorination treatment in advance, and the specific treatment is as follows: placing the nano cerium oxide on a quartz glass plate, and then placing the nano cerium oxide and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; charging CF in a ratio of 1:104A mixed gas of/Ar; the plasma generator was turned on, the voltage was adjusted to 13kV, the frequency was 55kHZ, and the fluorination treatment was carried out for 15 min.
The preparation method of the hydrophobic coating comprises the following steps:
(1) subjecting inorganic nano powder to plasma fluorination treatment, and then dispersing (40 ℃, stirring for 20min) into alcohol to obtain inorganic nano powder dispersion liquid;
(3) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(4) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting for 40min at 65 ℃, and then carrying out ultrasonic treatment for 20min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 120g/m2。
Fourthly, coating ink absorption paint on the hydrophobic paint layer to form an ink absorption coating;
wherein the ink-absorbing coating is made of RvoeoXM-380 ink-absorbing coating produced by Shanghai Bozhang chemical Co., Ltd; the coating weight was 90g/m2；
Fifthly, ink-jet printing a decorative pattern on the surface of the wood base material obtained in the step (four);
sixthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 240g/m2。
Example 5
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 1.6 parts of active magnesium oxide, 7.8 parts of phenolic resin, 89.8 parts of MDI resin adhesive and 0.8 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating adopts putty with the coating amount of 110g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
86 parts of a polyurethane acrylate dispersion;
5 parts of a silane coupling agent;
9 parts of inorganic nano powder dispersion liquid;
wherein, the silane coupling agent is trifluoropropyltrimethoxysilane, the concentration of the polyurethane is 25 weight percent, the concentration of the acrylic ester is 13 weight percent, the content of the water is 62 weight percent, the solid content is 38 percent, and the pH value is 7.
The inorganic nano powder is a mixed solution of nano cerium oxide (with the content of 30 wt%) and alcohol (with the content of 60 vol%). And the nanometer cerium oxide is subjected to plasma fluorination treatment in advance, and the specific treatment is as follows: placing the nano cerium oxide on a quartz glass plate, and then placing the nano cerium oxide and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; charging CF in a ratio of 1:104A mixed gas of/Ar; the plasma generator was turned on, the voltage was adjusted to 15kV, the frequency was 55kHZ, and the fluorination treatment was carried out for 20 min.
The preparation method of the hydrophobic coating comprises the following steps:
(1) subjecting inorganic nano powder to plasma fluorination treatment, and then dispersing (40 ℃, stirring for 20min) into alcohol to obtain inorganic nano powder dispersion liquid;
(3) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(4) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting for 45min at 64 ℃, and then carrying out ultrasonic treatment for 25min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 130g/m2。
Fourthly, coating ink absorption paint on the hydrophobic paint layer to form an ink absorption coating;
wherein the ink-absorbing coating is made of RvoeoXM-380 ink-absorbing coating produced by Shanghai Bozhang chemical Co., Ltd; the coating weight was 80g/m2；
Fifthly, ink-jet printing a decorative pattern on the surface of the wood base material obtained in the step (four);
sixthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 250g/m2。
Example 6
The embodiment provides a preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing, which specifically comprises the following steps:
providing a wood substrate;
specifically, the wood base material is formed by assembling 7 layers of eucalyptus veneers in a symmetrical distribution manner, vertically and crisscross in a crisscross manner, and then carrying out hot pressing; arranging an adhesive between the adjacent eucalyptus veneers; the adhesive comprises the following components in parts by weight: 1.6 parts of active magnesium oxide, 7.8 parts of phenolic resin, 89.8 parts of MDI resin adhesive and 0.8 part of nano titanium dioxide;
(II) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
specifically, the pore-filling coating adopts putty with the coating amount of 100g/m2；
Thirdly, coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
wherein, the formula of the hydrophobic coating is as follows:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
85.5 parts of polyurethane acrylate dispersion;
4.5 parts of a silane coupling agent;
10 parts of inorganic nano powder dispersion liquid;
wherein, the silane coupling agent is trifluoropropyltrimethoxysilane; the polyurethane concentration was 25% by weight, the acrylate concentration was 13% by weight, the water content was 62% by weight, the solids content was 38% and the pH was 7.
The inorganic nano powder is prepared from nano cerium oxide (content 35 wt%) and alcohol (alcohol)60 vol%) of the mixed solution. And the nanometer cerium oxide is subjected to plasma fluorination treatment in advance, and the specific treatment is as follows: placing the nano cerium oxide on a quartz glass plate, and then placing the nano cerium oxide and the quartz glass plate together in the middle of an electrode of a Dielectric Barrier Discharge (DBD) plasma processing device; charging CF in a ratio of 1:104A mixed gas of/Ar; the plasma generator was turned on, the voltage was adjusted to 15kV, the frequency was 60kHZ, and the fluorination treatment was carried out for 25 min.
The preparation method of the hydrophobic coating comprises the following steps:
(1) subjecting inorganic nano powder to plasma fluorination treatment, and then dispersing (40 ℃, stirring for 20min) into alcohol to obtain inorganic nano powder dispersion liquid;
(3) uniformly mixing inorganic nano powder dispersion liquid, polyurethane acrylate dispersion and a silane coupling agent to obtain modified polyurethane acrylate dispersion;
(4) sequentially adding graphene oxide, azobenzene and polytetrafluoroethylene into the modified polyurethane acrylate dispersoid, stirring and reacting at 62 ℃ for 55min, and then carrying out ultrasonic treatment for 25min to obtain a finished product of the hydrophobic coating.
The coating weight of the hydrophobic coating is 130g/m2。
Fourthly, coating ink absorption paint on the hydrophobic paint layer to form an ink absorption coating;
wherein the ink-absorbing coating is made of RvoeoXM-380 ink-absorbing coating produced by Shanghai Bozhang chemical Co., Ltd; the coating weight was 95g/m2；
Fifthly, ink-jet printing a decorative pattern on the surface of the wood base material obtained in the step (four);
sixthly, coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
specifically, the wear-resistant paint is a wear-resistant anti-cracking finish paint with the model of BMG0XXG produced by three-tree paint company Limited, and the coating amount is 270g/m2。
Comparative example 1
This comparative example provides a tile-like wood-based board which differs from example 5 in the formulation of the hydrophobic coating as follows:
the rest of the process was the same as in example 5.
Comparative example 2
This comparative example provides a tile-like wood-based panel which differs from example 5 in the formulation of the modified urethane acrylate dispersion, specifically, the modified urethane acrylate dispersion comprises the following components in parts by volume:
82 parts of a polyurethane acrylate dispersion;
2 parts of a silane coupling agent;
16 parts of inorganic nano powder dispersion liquid;
the rest is the same as example 5.
The ceramic tile-like wood-based panels (100 cm) obtained in examples 1 to 6 and comparative examples 1 to 2 were subjected to2) And (6) performing a test. The specific test method is as follows:
(1) the gloss was measured according to the method of GB/T4893.6-2013, the adhesion was measured according to the method of GB/T4893.4-2013, the hardness was measured according to the method of GB/T6739-2006, the impact resistance was measured according to the method of GB/T1732-1993, and the abrasion resistance was measured according to the method of GB/T4893.8-2013.
(2) The volume resistivity of the surface of the wood substrate (the interface modification layer, the pattern layer and the wear-resistant coating) is measured according to the method of GB/T1410-2006.
(3) Taking the surface area as 100cm2The imitated ceramic tile wooden floor is prepared by mixing filter paper (surface area 100 cm)2) Placing the ceramic tile-imitated wood board on the surface after completely soaking, covering the filter paper with a toughened glass cover, and measuring the size change condition of the ceramic tile-imitated wood board after placing for 24 hours, 7 days and 28 days;
(4) the coated plywood was printed with an ink jet printer at 8000dpi, 9600dpi, and 12000dpi, respectively, and the surface condition was observed after printing.
(5) And printing with a resolution of 9600dpi, gradually increasing the printing speed, and judging the maximum printing speed on the basis of the definition of a visual image.
The specific test results are given in the following table:
as can be seen from the table, the interface modification layer of the ceramic tile-imitated wood floor can effectively ensure the dimensional stability of the wood floor and provide a good foundation for ink-jet printing, the ink-jet printing precision of the ceramic tile-imitated wood floor can reach more than 9600dpi, and the printing speed can reach more than 32 m/min.
As can be seen from the comparison between comparative example 1, comparative example 2 and example 5, the proportion of each component in the hydrophobic coating of the present invention is changed so that the components are not within the protection scope of the present invention, and the technical effects similar to the present invention can not be realized.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A preparation method of a ceramic tile-imitated wood floor by digital ink-jet 3D printing is characterized by comprising the following steps:
(1) providing a wood substrate;
(2) coating a pore-filling coating on the wood substrate to form a pore-filling layer;
(3) coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
(4) printing a decorative pattern on the surface of the wood base material obtained in the step (3) in an ink-jet manner;
(5) coating wear-resistant paint on the decorative pattern to form a wear-resistant coating, and obtaining a finished product of the ceramic tile-imitated wood floor;
the hydrophobic coating is mainly prepared from the following raw materials in parts by weight:
wherein the modified polyurethane acrylate dispersion comprises the following components in parts by volume:
85-90 parts of a polyurethane acrylate dispersion;
3-5 parts of a silane coupling agent;
5-10 parts of inorganic nano powder dispersion liquid;
wherein the inorganic nano powder dispersion liquid is a mixed solution of inorganic nano powder and the dispersion liquid;
the inorganic nano powder is one or more of nano cerium oxide powder, nano titanium oxide powder, nano silicon oxide powder and nano tin oxide powder.
2. The method for preparing the ceramic tile-imitated wood floor through digital ink-jet 3D printing according to claim 1, wherein the pore-filling paint is one or more of putty, epoxy resin mortar and polyester resin mortar;
the coating amount of the pore-filling coating is 100-120 g/m2The coating amount of the wear-resistant coating is 220-280 g/m2。
3. The method for preparing the tile-imitated wood floor through digital ink-jet 3D printing according to claim 1, wherein the wood substrate is a plywood formed by hot-pressing 5-8 layers of eucalyptus veneers, and an adhesive is arranged between every two adjacent eucalyptus veneers;
the length of impregnation stripping of the plywood is less than 10mm, the bonding strength is greater than or equal to 1.2MPa, and the thickness is 10-15 mm.
4. The method for preparing a ceramic tile-imitated wood floor by digital ink-jet 3D printing according to claim 3, wherein the adhesive comprises the following components in parts by weight: 1-2 parts of active magnesium oxide, 7-8 parts of phenolic resin, 88-90 parts of MDI resin adhesive and 0.1-1 part of nano titanium dioxide.
5. The method for preparing the tile-imitated wood floor by digital ink-jet 3D printing according to claim 1, wherein the inorganic nano powder is subjected to plasma fluorination treatment and then is dispersed in a dispersion liquid to prepare an inorganic nano powder solution;
in the inorganic nano powder dispersion liquid, the mass fraction of inorganic nano powder is 22-40%; the dispersion liquid is water and/or alcohol.
6. The method of making a digital inkjet 3D printed tile-simulated wood floor of claim 5, wherein the plasma fluorination process comprises: placing inorganic nano powder in dielectric barrier discharge plasma equipment, and carrying out plasma fluorination treatment on the inorganic nano powder by taking carbon tetrafluoride and argon as reaction gases; wherein the treatment voltage is 13-18 kV, the treatment frequency is 55-65 kHz, and the treatment time is 10-30 min;
wherein the volume ratio of the carbon tetrafluoride to the argon is 1 (8-12).
7. The preparation method of the ceramic tile-imitated wood floor by digital ink-jet 3D printing according to claim 1, wherein the inorganic nano powder is selected from nano cerium oxide powder or nano tin oxide powder, the dispersion liquid is selected from ethanol water solution, and the volume fraction of the ethanol water solution is 55-65%;
in the polyurethane acrylate dispersion, the concentration of polyurethane is 23-28 wt%, the concentration of acrylate is 11-15 wt%, the content of water is 60-65 wt%, the solid content is 37-40%, and the pH value is 6-8.
8. The method for preparing a ceramic tile-imitated wood floor by digital ink-jet 3D printing according to claim 1, wherein the step (3) comprises:
(3.1) coating a hydrophobic coating on the pore-filling layer to form a hydrophobic coating;
and (3.2) coating an ink-absorbing coating on the hydrophobic coating to form the ink-absorbing coating.
9. The method of making a digital inkjet 3D printed tile-simulated wood floor of claim 1, wherein the hydrophobic coating is made by the method of:
(1) uniformly mixing 5-10 parts by volume of inorganic nano powder dispersion liquid, 85-90 parts by volume of polyurethane acrylate dispersion liquid and 3-5 parts by volume of silane coupling agent to obtain modified polyurethane acrylate dispersion liquid;
(2) 0.6-3.5 parts by weight of graphene oxide, 0.5-1 part by weight of azobenzene and 4-10 parts by weight of polytetrafluoroethylene are sequentially added into 86-94 parts by weight of the modified polyurethane acrylate dispersoid, the mixture is stirred and reacted for 40-60 min at the temperature of 60-65 ℃, and then ultrasonic treatment is carried out for 20-40 min, so that a finished product of the hydrophobic coating is obtained.
10. A wood floor, which is prepared by the preparation method of the digital ink-jet 3D printing ceramic tile-imitated wood floor as claimed in any one of claims 1 to 9.
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