CN117447878A - Color fixing primer for dyed veneer/scientific veneer and coating process - Google Patents
Color fixing primer for dyed veneer/scientific veneer and coating process Download PDFInfo
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- CN117447878A CN117447878A CN202311239290.0A CN202311239290A CN117447878A CN 117447878 A CN117447878 A CN 117447878A CN 202311239290 A CN202311239290 A CN 202311239290A CN 117447878 A CN117447878 A CN 117447878A
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- 238000000576 coating method Methods 0.000 title claims abstract description 72
- 239000003973 paint Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 14
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 14
- 229940124543 ultraviolet light absorber Drugs 0.000 claims abstract description 14
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 14
- 239000000080 wetting agent Substances 0.000 claims abstract description 13
- 239000013530 defoamer Substances 0.000 claims abstract description 9
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 238000004043 dyeing Methods 0.000 claims description 5
- -1 polysiloxane Polymers 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000002861 polymer material Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 8
- 238000007761 roller coating Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 239000006221 furniture coating Substances 0.000 abstract description 2
- 238000004383 yellowing Methods 0.000 description 24
- 238000005516 engineering process Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 241000220324 Pyrus Species 0.000 description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 12
- 229910052709 silver Inorganic materials 0.000 description 12
- 239000004332 silver Substances 0.000 description 12
- 235000014443 Pyrus communis Nutrition 0.000 description 10
- 244000137852 Petrea volubilis Species 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 229920002522 Wood fibre Polymers 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- 239000003513 alkali Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 235000021017 pears Nutrition 0.000 description 2
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- 244000086363 Pterocarpus indicus Species 0.000 description 1
- 235000009984 Pterocarpus indicus Nutrition 0.000 description 1
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Classifications
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
-
- 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
- B05D7/57—Three layers or more the last layer being a clear coat
-
- 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
- C09D5/002—Priming paints
-
- 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
-
- 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
- B05D2502/00—Acrylic polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to the technical field of furniture coating, and particularly discloses a color-fixing primer for dyed veneer/scientific veneer and a coating process, wherein the color-fixing primer comprises 38-45 wt% of water-based acrylic resin, 0.2-0.6 wt% of water-based wetting agent, 0.05-0.25 wt% of water-based defoamer, 40-50 wt% of ethanol, 4-9 wt% of ethylene glycol monobutyl ether, 1-5 wt% of ultraviolet light absorber and 4-10 wt% of deionized water. The coating process of the dyed veneer/technical veneer comprises the following steps: plane sanding and special-shaped sanding; spraying/rolling a fixation primer; spraying/rolling a water-based seal primer; roller coating UV putty; polishing the primer; first roll coating of UV primer; a second roll coating of UV primer; polishing the primer; finishing paint; and (5) spraying a clear finishing paint. The color fixing primer procedure can ensure that the requirement on dyed veneer/technical veneer is relaxed during process construction, the production cost is reduced, and the process stability can be ensured; compared with common solid wood products, the coating process has high overall production efficiency and short construction period.
Description
Technical Field
The invention belongs to the technical field of furniture coating, and particularly relates to a color-fixing primer for dyed veneer/scientific veneer and a coating process.
Background
The dyed veneer is a novel beautiful and exquisite material which is produced by dyeing and defect treatment of natural veneer by utilizing a high-tech processing technology, not only has the texture of natural veneer, but also complements part of defects of the natural veneer. The dyed veneer can change the color on the basis of not changing the texture of the natural veneer, meanwhile, the color diversification enriches the color imagination space of designers, improves the use value of the veneer, and adds a plurality of colors for the living environment. The technical veneer is a novel wood material which is prepared by using a bionic principle and performing high-tech processing and recombination beautifying treatment on common wood, and the veneer processed by the technical veneer is called the technical veneer. Although the patterns of the scientific and technological veneer are simulated by a computer, the artistic veneer has unique texture, texture and color of the wood, has various varieties, is lifelike in imitation of beech, sabide, ebony and rosewood, and can be produced in batches. The veneer is used as a new-generation facing material, and can be used for decorating curved surfaces, special-shaped surfaces and indoor walls besides artificial boards and furniture facing. The dyed veneer and the scientific veneer are processed by adopting natural veneer or natural wood through the processes of bleaching, dyeing, compounding, slicing, rotary cutting and the like, and the ultraviolet ageing resistance of wood fibers is influenced in the processing process.
The yellowing resistance of the existing dyed veneer and technical veneer in the current market is uneven, and after customers use the veneer to make coating and finishing, the surface is easy to generate yellowing. At present, the solutions in the whole market basically start from dyed thin wood and technical thin wood, and the dyed thin wood and the technical thin wood with better quality are selected for coating, so that the yellowing phenomenon is solved, but the method can greatly improve the overall production cost, and the process stability of the dyed thin wood and the technical thin wood is not high, and the color difference problem is easily generated among different batches.
Therefore, there is a need to develop a color fixing primer and a coating process for dyeing veneer/technical veneer to meet the demands.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a color-fixing primer for dyed veneer/technical veneer and a coating process.
In order to achieve the above object, one of the technical solutions of the present invention is: the color fixing primer for dyed veneer/technological veneer comprises 38-45 wt% of aqueous acrylic resin, 0.2-0.6 wt% of aqueous wetting agent, 0.05-0.25 wt% of aqueous defoaming agent, 40-50 wt% of ethanol, 4-9 wt% of ethylene glycol monobutyl ether, 1-5 wt% of ultraviolet light absorbent and 4-10 wt% of deionized water.
In a preferred embodiment of the invention, the color fixing primer comprises 40 to 42 weight percent of aqueous acrylic resin, 0.3 to 0.5 weight percent of aqueous wetting agent, 0.1 to 0.2 weight percent of aqueous defoamer, 45 to 47 weight percent of ethanol, 5 to 8 weight percent of ethylene glycol monobutyl ether, 2 to 3 weight percent of ultraviolet light absorber and 5 to 8 weight percent of deionized water.
In a preferred embodiment of the present invention, the aqueous acrylic resin is a high-performance aqueous acrylic resin having high yellowing resistance, strong permeability, and quick drying property.
Further preferably, the aqueous acrylic resin is at least one of E0544 produced by Jitian chemical industry and 832G produced by Jili chemical industry.
In a preferred embodiment of the present invention, the aqueous wetting agent is alkylphenol ethoxylate polymer material.
Further preferably, the aqueous wetting agent is preferably at least one of BYK349, BYK346, BYK333 produced by pick chemical.
In a preferred embodiment of the invention, the aqueous defoamer is a modified polysiloxane.
Further preferably, the aqueous defoamer is at least one of BYK020, BYK021, BYK025 produced by pick chemistry.
In a preferred embodiment of the present invention, the ultraviolet light absorber is at least one of UV-531, T-292, T-400, T-384-2.
In order to achieve the above object, a second technical scheme of the present invention is as follows: the application of the color-fixing primer in the painting process of dyed veneer/technical veneer.
In order to achieve the above object, a third aspect of the present invention is: a process for painting dyed veneer/technical veneer, comprising the steps of:
(1) Carrying out plane sanding and abnormal sanding on dyed veneer/technical veneer, ensuring the surface to be smooth and being easy to coat;
(2) Spraying/rolling color fixing primer on the plate surface treated by sanding in the step (1), and baking to improve yellowing resistance of dyed veneer/technical veneer;
(3) The surface of the color-fixing primer treated in the step (2) is sprayed/rolled with a water-based seal primer, so that the water can be prevented from entering, and the effect of alkali resistance and blocking can be achieved, so that the coating is prevented from being damaged by alkali penetrating out of wood;
(4) Coating UV putty on the surface of the water-based seal coat by roller coating in the step (3), and filling the places where the seal coat in the step (3) is unevenly sprayed and the substrate is exposed;
(5) The surface treated in the step (4) is subjected to primer polishing, so as to increase the adhesive force of the subsequent paint;
(6) First roll coating of UV primer: compared with common PU and PE transparent paint, the UV primer has the characteristics of less volatile substances, no toxicity, no pungent smell, no harm to human health, no environmental pollution, plump paint film, crystal clear and transparent paint film, good flexibility, water resistance, wear resistance, aging resistance, yellowing resistance, quick drying, convenient use and the like; the first roller coating UV primer is semi-dry;
(7) Second roll coating UV primer: after the UV primer is coated by the roller in the step (6), infrared leveling is carried out for 5-10min, polishing is not needed, and a second roller coating of the UV primer is directly carried out, so that the fullness of a paint film can be increased, and the second UV primer needs to be completely dried;
(8) Performing primer polishing on the surface treated in the step (7);
(9) Finishing paint color correction is carried out on the sample blocks needing to adjust the color of the veneer, so that the influence of inconsistent colors caused by different batches of veneer is reduced;
(10) And (3) spraying a clear finishing paint: the final clear paint in the process can be constructed according to the glossiness requirement, and mainly protects the veneer from being scratched, thereby achieving the paint decoration effect.
In order to achieve the above object, the fourth technical scheme of the present invention is as follows: the composite paint film obtained by the coating process comprises a color-fixing primer, a seal primer, a UV primer and a finish paint from inside to outside.
Compared with the prior art, the invention has the beneficial effects that:
(1) The color fixing primer can penetrate into dyed veneer/technical veneer to wrap wood fibers, so that the aging hazard of ultraviolet light to the wood fibers is blocked, and the yellowing resistance of the dyed veneer/technical veneer is greatly improved;
(2) The coating process adopts a water paint and UV paint roller coating process, and the damage to the environment and constructors is small because of less volatile substances;
(3) The UV primer is constructed in a roller coating mode, so that the construction is convenient, simple and quick, the waiting time is short, and the storage pressure of a factory can be released;
(4) The color fixing primer procedure can ensure that the requirement on dyed veneer/technical veneer is relaxed during process construction, the production cost is reduced, and the process stability can be ensured;
(5) Compared with common solid wood products, the coating process has high overall production efficiency and short construction period;
(6) The composite paint film obtained by the coating process can solve the yellowing of dyed veneer/technical veneer, and has high process stability and no chromatic aberration among different batches.
Drawings
FIG. 1 is a schematic view of a coating process layer structure of the present invention;
in the figure: 1-dyeing veneer/technological veneer, 2-fixation primer, 3-seal primer, 4-UV primer and 5-finish paint.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments, but the scope of the present invention is not limited to these embodiments. Like reference numerals refer to like elements throughout, and like reference numerals refer to like elements.
The color fixing primer for dyed veneer/technological veneer comprises 38-45 wt% of aqueous acrylic resin, 0.2-0.6 wt% of aqueous wetting agent, 0.05-0.25 wt% of aqueous defoaming agent, 40-50 wt% of ethanol, 4-9 wt% of ethylene glycol monobutyl ether, 1-5 wt% of ultraviolet light absorbent and 4-10 wt% of deionized water.
The color-fixing primer comprises 40 to 42 weight percent of water-based acrylic resin, 0.3 to 0.5 weight percent of water-based wetting agent, 0.1 to 0.2 weight percent of water-based defoaming agent, 45 to 47 weight percent of ethanol, 5 to 8 weight percent of ethylene glycol monobutyl ether, 2 to 3 weight percent of ultraviolet light absorbent and 5 to 8 weight percent of deionized water.
The aqueous acrylic resin is high-performance aqueous acrylic resin with high yellowing resistance, strong permeability and quick drying property.
The water-based wetting agent is alkylphenol polyoxyethylene high molecular material.
The aqueous defoamer is modified polysiloxane.
The ultraviolet light absorber is at least one of UV-531, T-292, T-400 and T-384-2 of cyanogen chemical.
The application of the color-fixing primer in the coating process of dyed veneer/technical veneer.
A process for painting dyed veneer/technical veneer, comprising the steps of:
(1) Carrying out plane sanding and abnormal sanding on the dyed veneer/technical veneer;
(2) Spraying/rolling fixation primer on the plate surface subjected to sanding treatment in the step (1), and baking;
(3) Spraying/rolling a water-based seal primer on the surface sprayed with the color-fixing primer in the step (2);
(4) Coating UV putty on the surface of the water-based seal primer by roller in the step (3);
(5) Performing primer polishing on the surface treated in the step (4);
(6) First roll coating of UV primer;
(7) A second roll coating of UV primer;
(8) Polishing the primer;
(9) Finishing paint color of the sample blocks needing to be adjusted in the color of the veneer;
(10) And (5) spraying a clear finishing paint.
A composite paint film obtained by the coating process.
The composite paint film sequentially comprises a color fixing primer, a seal primer, a UV primer and a finish paint from inside to outside.
The dyed veneer used in the following examples and comparative examples was KOTO dyed veneer, the technical veneer was silver pear 244Q technical veneer, silver pear 691Q technical veneer, silver pear 6331Q technical veneer, 18mm scarlet technical silver pear 6331Q solid veneer; the aqueous acrylic resin in the color fixing primer is 832G produced by Jielization, the aqueous wetting agent is BYK349 produced by Pick chemistry, the aqueous defoamer is modified polysiloxane, UV-531 is cyante chemistry production, and T-292, T-400 and T-384-2 are BASF production; the water-based seal coat used in the coating process is ZW40012, the UV putty is ZU62009, the UV primer is ZU45210, the clear finish is ZW52247, and the novel material production is performed.
Example 1
A color fixing primer for dyed veneer/technical veneer comprises 40wt% of aqueous acrylic resin, 0.5wt% of aqueous wetting agent, 0.2wt% of aqueous defoaming agent, 45wt% of ethanol, 5wt% of ethylene glycol monobutyl ether, 3wt% of ultraviolet light absorber (prepared by UV-531 and T-292 according to a ratio of 1:1) and 6.3wt% of deionized water.
A process for painting dyed veneer, comprising the steps of:
(1) Carrying out plane sanding and special-shaped sanding on KOTO dyed wood veneer by using 320# sand paper special for solid wood;
(2) Spraying/rolling the color fixing primer on the treated plate surface, and baking;
(3) Coating a water-based seal primer on the surface sprayed with the color-fixing primer in a roller way;
(4) Coating UV putty on the surface of the roller-coated water-based seal primer;
(5) Polishing the surface of the treated primer by 320-400# sand paper;
(6) First roll coating of UV primer;
(7) A second roll coating of UV primer;
(8) Primer polishing is carried out by 400# to 600# sand paper;
(9) Finishing the paint color of the sample blocks needing to be regulated to the color of the veneer, and finishing the finishing of the paint color after 2 hours;
(10) And (5) spraying a clear finishing paint.
The composite paint film obtained by the coating process comprises a color-fixing primer, a seal primer, a UV primer and a finish paint, wherein the color-fixing primer is 35 g/square meter, the seal primer is 35 g/square meter, the UV primer is 25 g/square meter, and the water-based finish paint is 100 g/square meter.
Example 2
The process for painting dyed veneer was the same as in example 1, except that both the color fixing primer and the wake-up sealer were roll-coated.
Example 3
A coating process of a scientific and technological veneer comprises the following steps:
(1) Carrying out plane sanding and abnormal sanding on the 244Q technical wood veneer of the silver pear by using 320# sand paper special for solid wood;
(2) Roll-coating the treated plate surface with the color-fixing primer prepared in the example 1, and baking;
(3) Spraying a water-based seal primer on the surface sprayed with the color-fixing primer;
(4) Coating UV putty on the surface of the roller-coated water-based seal primer;
(5) Polishing the surface of the treated primer by 320-400# sand paper;
(6) First roll coating of UV primer;
(7) A second roll coating of UV primer;
(8) Primer polishing is carried out by 400# to 600# sand paper;
(9) Finishing the paint color of the sample blocks needing to be regulated to the color of the veneer, and finishing the finishing of the paint color after 2 hours;
(10) And (5) spraying a clear finishing paint.
The composite paint film obtained by the coating process comprises a color-fixing primer, a seal primer, a UV primer and a finish paint, wherein the color-fixing primer is 35 g/square meter, the seal primer is 35 g/square meter, the UV primer is 25 g/square meter, and the water-based finish paint is 100 g/square meter.
Example 4
A coating process of a technical veneer is the same as that of example 3, except that silver pear 691Q technical veneer is adopted as a sample.
Example 5
The coating process of the technical veneer was the same as in example 3, except that the sample was silver pear 6331Q technical veneer.
Example 6
The coating process of technical veneer was the same as example 3, except that the water-based sealer was a roll coating process.
Example 7
The coating process of technical veneer was the same as example 3 except that the sample was silver pear 691Q technical veneer and the water-based sealer was a roll coating process.
Example 8
The coating process of technical veneer was the same as example 3 except that the sample was silver pear 6331Q technical veneer and the water-based sealer was a roll coating process.
Example 9
A coating process of a technical veneer is the same as that of example 6, except that a sample is prepared by sticking 18mm scarlet-color technical silver pears 6331Q solid wood skin, and an ultraviolet light absorber is prepared by UV-531 and T-384-2 according to a mass ratio of 2:1.
Example 10
A coating process of a technical veneer is the same as that of example 6, except that a sample is prepared by sticking 18mm scarlet-color technical silver pears 6331Q solid wood skin, and an ultraviolet light absorber is prepared by UV-531 and T-400 according to a mass ratio of 1:1.
Example 11
A coating process of a technical veneer is the same as that of example 6, except that a sample is prepared by adopting 18mm scarlet-color technical silver pear 6331Q solid wood veneer, and an ultraviolet light absorber is prepared by UV-531 and T-292 according to a mass ratio of 1:1.
Comparative example 1
The dyed veneer was applied by a commercially available coating process, the specific process is shown in table 1 below.
Comparative example 2
The dyed veneer was applied by a commercially available coating process, the specific process is shown in table 1 below.
Comparative example 3
The dyed veneer was applied by a commercially available coating process, the specific process is shown in table 1 below.
Comparative example 4
The technical veneer adopts the existing coating process in the market, and the specific process is shown in the following table 2.
Comparative example 5
The technical veneer was sprayed by the existing spraying technology in the market, and the specific technology is shown in the following table 2.
Comparative example 6
The technical veneer was sprayed by the existing spraying technology in the market, and the specific technology is shown in the following table 2.
Comparative example 7
The technical veneer was sprayed by the existing spraying technology in the market, and the specific technology is shown in the following table 2.
Comparative example 8
The technical veneer was sprayed by the existing spraying technology in the market, and the specific technology is shown in the following table 2.
Comparative example 9
The technical veneer was sprayed by the existing spraying technology in the market, and the specific technology is shown in the following table 2.
The composite paint films prepared in examples 1 to 11 and comparative examples 1 to 9 were subjected to yellowing resistance test, the standard requirement is that the ultraviolet lamp is irradiated for 48 hours, no bubbling, no cracking and other anomalies are caused, the gray card grade is not less than 4, and the results are shown in the following tables 1 to 4.
TABLE 1 coating process of examples 1-2 and comparative examples 1-3 and yellowing resistance grade
TABLE 2 coating process of examples 3-5 and comparative examples 4-6 and yellowing resistance grade
TABLE 3 coating process of examples 6-8 and comparative examples 7-9 and yellowing resistance grades
TABLE 4 coating process and yellowing resistance grades of examples 9-11
As can be seen from table 1: the yellowing-resistant grade of the dyed veneer is 3-4 at most by adopting the coating process in the existing market, and the yellowing-resistant grade of the same type of dyed veneer can reach 4-5 by adopting the coating process provided by the invention; under the same coating conditions, both spray coating and roll coating, the yellowing resistance level is improved by the color fixing process proposed in the invention.
As can be seen from table 2: the existing spraying technology in the market is adopted to spray on wood veneer of different technologies, the yellowing resistance grade is 3-4, and the highest yellowing resistance grade is 4, and the yellowing resistance grade is improved by adopting the color fixing technology of the invention and can reach 5.
As can be seen from table 3: the existing roller coating technology in the market is adopted to roll coating the veneer with the yellowing resistance grade of 3-4 and the highest grade of 4, and the color fixing technology of the invention improves the yellowing resistance grade, and the yellowing resistance grade can reach 5 grades at the highest;
from table 4, it can be seen that: the effect of different brands on the process is tested by changing the brands of the ultraviolet light absorber in the color fixing agent, and the result proves that the effect of the ultraviolet light absorber of different brands on yellowing resistance is small, and the ultraviolet light absorber cannot be shown in the test result.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The color-fixing primer for dyeing veneer/scientific veneer is characterized by comprising 38-45 wt% of aqueous acrylic resin, 0.2-0.6 wt% of aqueous wetting agent, 0.05-0.25 wt% of aqueous defoamer, 40-50 wt% of ethanol, 4-9 wt% of ethylene glycol monobutyl ether, 1-5 wt% of ultraviolet light absorber and 4-10 wt% of deionized water.
2. The color fixing primer according to claim 1, comprising 40 to 42wt% of aqueous acrylic resin, 0.3 to 0.5wt% of aqueous wetting agent, 0.1 to 0.2wt% of aqueous defoamer, 45 to 47wt% of ethanol, 5 to 8wt% of ethylene glycol monobutyl ether, 2 to 3wt% of ultraviolet light absorber and 5 to 8wt% of deionized water.
3. The fixing primer according to claim 1, wherein the aqueous wetting agent is alkylphenol ethoxylate polymer material.
4. The fixing primer of claim 1 wherein the aqueous defoamer is a modified polysiloxane.
5. The fixing primer of claim 1, wherein the ultraviolet light absorber is at least one of UV-531, T-292, T-400, T-384-2.
6. Use of the fixing primer according to any one of claims 1 to 5 in a process for the coating of dyed veneer/technical veneer.
7. A coating process according to claim 6, comprising the steps of:
(1) Carrying out plane sanding and abnormal sanding on the dyed veneer/technical veneer;
(2) Spraying/rolling fixation primer on the plate surface subjected to sanding treatment in the step (1), and baking;
(3) Spraying/rolling a water-based seal primer on the surface sprayed with the color-fixing primer in the step (2);
(4) Coating UV putty on the surface of the water-based seal primer by roller in the step (3);
(5) Performing primer polishing on the surface treated in the step (4);
(6) Coating a UV primer on the surface polished by the primer in the step (5) for the first time;
(7) Performing a second roll coating of the UV primer on the surface of the UV primer in the step (6);
(8) Performing primer polishing on the surface treated in the step (7);
(9) Finishing paint color of the sample blocks needing to be adjusted in the color of the veneer;
(10) And (5) spraying a clear finishing paint.
8. The coating process according to claim 7, wherein the amount of the color fixing primer applied in the step (2) is controlled to be 30 to 100 g/square meter.
9. The coating process according to claim 7, wherein the first roll-coating UV primer in the step (5) is semi-dry, and the second roll-coating UV primer in the step (6) is directly carried out without polishing after infrared leveling for 5-10min, and the second UV primer needs to be completely dry.
10. A composite paint film obtainable by a coating process as claimed in any one of claims 7 to 9, comprising, in order from the inside to the outside, a fixing primer, a sealer, a UV primer and a top coat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311239290.0A CN117447878A (en) | 2023-09-25 | 2023-09-25 | Color fixing primer for dyed veneer/scientific veneer and coating process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311239290.0A CN117447878A (en) | 2023-09-25 | 2023-09-25 | Color fixing primer for dyed veneer/scientific veneer and coating process |
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| CN117447878A true CN117447878A (en) | 2024-01-26 |
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|---|---|---|---|
| CN202311239290.0A Pending CN117447878A (en) | 2023-09-25 | 2023-09-25 | Color fixing primer for dyed veneer/scientific veneer and coating process |
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| Country | Link |
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| CN (1) | CN117447878A (en) |
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