CN115672697A - Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material - Google Patents
Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material Download PDFInfo
- Publication number
- CN115672697A CN115672697A CN202211355316.3A CN202211355316A CN115672697A CN 115672697 A CN115672697 A CN 115672697A CN 202211355316 A CN202211355316 A CN 202211355316A CN 115672697 A CN115672697 A CN 115672697A
- Authority
- CN
- China
- Prior art keywords
- coating
- wood product
- water
- percent
- photocuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 49
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 230000005855 radiation Effects 0.000 title claims abstract description 36
- 238000001723 curing Methods 0.000 title claims abstract description 31
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 22
- 239000002023 wood Substances 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title claims abstract description 13
- 230000037452 priming Effects 0.000 title claims description 3
- 239000003973 paint Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007766 curtain coating Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000007761 roller coating Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000000080 wetting agent Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000004132 cross linking Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229920002531 Rubberwood Polymers 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011011 black crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
Abstract
The invention discloses a method for quickly curing a wood product base material through photocuring water-based base coating by nonionic radiation, belonging to the technical field of wood product coatings and coating. The non-ionic radiation principle, infrared thermal radiation and ultraviolet UVB radiation technology are used. According to the analysis of photochemical principle, the moisture content of the wood product base material and the moisture content of the photo-curing water-based paint can be analyzed by infrared and ultraviolet absorption spectrums, the wavelength of the infrared absorption spectrum of the wood product base material moisture is 2.8-16 mu m, the temperature of an infrared radiation source is 765-100 ℃, and the drying time is 3-20min. The UV B ultraviolet curing wavelength of the photocuring water-based paint is 245-331nm, the curing energy needs 3590kJ/mol, and the crosslinking curing is carried out within less than 1 minute.
Description
Technical Field
The invention belongs to the technical field of coating and painting of wood products, and particularly relates to a method for quickly curing a wood product substrate through photocuring water-based base coating by nonionic radiation.
Background
The water content of the medium fiber artificial board (MDF) base material (GB/T11718-2009) is 3-13%, the occupancy rate of MDF products in the furniture market is 60-70%, the water content of the powder environment-friendly coating decorative base material is 6-8%, the cracking and the bubbling of a coating of the board can be prevented, and the photocuring water-based base coating is an important method.
The photocuring water-based paint consists of water-based UV resin, a photoinitiator, an auxiliary agent and water, and has the advantages that:
1) Water is a safe diluent, so that the viscosity is easy to adjust, and a monomer-free formula can be realized;
2) Rheology can be conveniently controlled with water or thickeners; the paint is suitable for various coating modes, such as roller coating, curtain coating, spraying and the like;
3) The viscosity is not required to be adjusted by a solvent diluent, so that the problems of VOCs, toxicity and irritation can be solved;
4) Can avoid the curing shrinkage caused by the reactive diluent, and can be used for coating non-absorbent surfaces such as plastics;
5) Extremely thin coatings can be obtained, and the cost is reduced;
6) The paint does not contain volatile organic compounds, does not burn and is safe;
7) The equipment container is convenient to clean;
8) Before photocuring, the components can be contacted, stacked and trimmed;
9) The disadvantage is that the photocuring must be pre-dried, which is one of the characteristics of the infrared heat radiation heat transfer and the rapid moisture drying of the invention. Can be linked with light curing production line equipment to realize intelligent control.
Chinese patent publication No. CN107177227A discloses UV putty, its preparation method and application of wood powder coating. The main body adopts oligomer, the invention is characterized in that UV spraying putty with low viscosity and curing content of 10 percent is developed, toxic volatile substances exist in active monomers, and organic waste gas emission exists in UV photocuring, so that environmental pollution harm is caused.
Chinese patent publication No. CN10172174A discloses a method for coating the surface of a wooden article, which is to spray a general fast UV-curing paint on the surface, and use a T-UV-688 ultraviolet-curing paint, an oligomer water-based paint of acrylic acid as a main component, and does not disclose the water content of the paint and the water content of a base material, and cannot ensure the adhesion and curing degree of the coating and the base material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a method for quickly curing a woodwork substrate by using photocuring water-based primer nonionic radiation, and can overcome the defects of how to keep the moisture content of a woodwork to be 6-8% constant and how to quickly cure a coating.
The purpose of the invention can be realized by the following technical scheme:
the method for quickly curing the wood product base material by using the photocuring water-based primer nonionic radiation specifically comprises the following steps:
coating a layer of light-cured water-based paint of woodware on the surface of a woodware substrate, wherein the coating and a surface powder coating form a functional composite coating, and because the moisture content of the substrate and the moisture in the light-cured water-based paint overflow during the curing of powder infrared radiation heat energy, the cracking of the wooden substrate and the bubbling or peeling of the coating occur, the moisture needs to be fully dried, and the technical requirements of quick curing and film forming of the light-cured coating with constant moisture are met;
secondly, the wavelength of an infrared heat radiation source radiated by non-ions is 2.8-16 mu m, the temperature is 765-150 ℃, the ultraviolet light curing wavelength is 245-331nm, and the energy is 3590kJ/mol (37.2 ev), so that the coating is cured quickly.
Further, the photocureable water-based paint is composed of the following raw materials in percentage by mass: 2.0 percent of 2-hydroxy-2-methyl-1-propiophenone (ultraviolet initiator), 39.2 percent of EA (ethyl acetate), 10.5 percent of PUA (polyurethane acrylate), 2.4 percent of flatting agent, 0.3 percent of thickening agent, 0.1 percent of wetting agent and 45.5 percent of water.
Furthermore, the infrared absorption spectrum wavelength of the non-ionic radiation is set to be three sections of 2.8 mu m, 5-8 mu m and 13-16 mu m, the temperature of the first section of infrared thermal radiation source is 765-550 ℃ (medium wave infrared wavelength), the temperature of the second section of infrared thermal radiation source is 300-150 ℃, and the temperature of the third section of infrared thermal radiation source is 150-100 ℃ (far infrared wavelength), so that the paint can be quickly dried for 3-15 minutes at the same time.
Further, the ultraviolet absorption wavelength of the 2-hydroxy-2-methyl-1-propiophenone in the ultraviolet curing process is 245nm, 280nm and 331nm, the common ultraviolet curing process is a chain polymerization reaction, the molecular weight is increased, and a cross-linked network cured coating is formed.
Furthermore, the light-cured water-based paint can be coated by coating methods such as blade coating, roller coating, dip coating, curtain coating, spray coating and the like, and a rapid curing system is realized by wavelength combination of a mercury lamp (365 nm) or a gallium lamp (415 nm).
The invention has the beneficial effects that:
the invention can keep the moisture content of the wooden products constant between 6 percent and 8 percent and lead the coating to achieve the purpose of fast curing, in addition, the invention applies the energy matching of the non-ionic radiation infrared radiation wavelength and the moisture absorption wavelength, and the energy matching of the ultraviolet ray of the photocureable coating and the absorption wave of the coating photoinitiator to achieve the purposes of energy saving and environmental protection.
Drawings
FIG. 1 is a microscopic interface model diagram of the MDF artificial board substrate, the light-cured water-based base coat and the low-temperature thermosetting powder composite coating thereof.
FIG. 2 is a model of a water-constant interface heated by moisture and infrared radiation of a composite coating of MDF artificial board substrate/photocureable water-based paint and powder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, 1 is an MDF artificial board base material (with water content of 3-10%), 2 is a light-cured water-based base coat (with water content less than or equal to 45%), and 3 is a low-temperature (< 130 ℃) thermosetting powder coating.
As shown in fig. 2, a is the infrared absorption spectrum of the moisture content of the MDF board substrate and the photocuring water-based primer; b is a matching graph of energy sources with the composite wavelengths of 4.0 μm (320 ℃), 5.0 μm (260 ℃) and 6.5 μm (150 ℃) emitted by an infrared radiation source.
Example 1
The light-curable aqueous UV coating used is supplied by Zhanchen group (Shanghai) Inc
1) Waterborne UV spray primer model EU46502;
appearance, milky white viscous liquid;
density (25 ℃) is 1.1 +/-0.1 g/ml, viscosity (25 ℃) is 80-120 seconds (T-4 cup);
the solid content is 35-38%;
diluent agent: water;
the spraying coating weight is 80-120mg per square meter;
keeping the environmental humidity at 30-80%;
curing energy: mercury lamps UVA250-350MJ/mol,
the product is a child health table made of wood base materials of rubber wood and pine, the water content is 12 percent before spraying,
the first section of the infrared radiation heating furnace is 320 ℃, the second section is 260 ℃, and the third section is 150 ℃; infrared heat radiation rapid drying is constant at the water content of 8 percent;
the implementation method comprises the following steps:
(1) Spray photo-curing water-based UV (ultraviolet) base coat
Coating quantity 80120 mg- 2
Ambient temperature RT 26 deg.C
Keeping the humidity RH 55%
Full-curing UV energy of 250-300MJ/cm 2 Spraying two layers;
(2) Top-coated transparent matte acrylic powder
Curing temperature 150 ℃ 3min
The coating had no blistering.
Example 2
The product is a wood product base material MDF plate type children health table, the moisture content is 9-10% before spraying, the first section is 420 ℃, the second section is 350 ℃, the third section is 220 ℃, the moisture content is controlled to be 6-8% by using infrared heat radiation for quick drying, and the time is 5-6 minutes;
the implementation method comprises the following steps:
the base coat adopts water-based EU46502UV base coat;
the surface is electrostatically sprayed with sand streak (Aksu Nobel) 317 white powder;
carrying out quality evaluation on the black crystal infrared plane radiation heating furnace, the solidified powder coating and the 08F cold-rolled sheet surface powder coating;
all indexes of MDF powder coating quality reach the powder technical requirements.
The above description of the embodiments specifically describes the analysis method according to the present invention. It should be noted that the above description is only for the purpose of helping those skilled in the art better understand the method and idea of the present invention, and not for the limitation of the related contents. The present invention may be appropriately adjusted or modified by those skilled in the art without departing from the principle of the present invention, and the adjustment and modification also fall within the scope of the present invention.
Claims (5)
1. The method for quickly curing the wood product base material through photocuring waterborne base coat nonionic radiation is characterized by comprising the following steps:
firstly, coating a layer of light-cured water-based paint of woodware on the surface of a woodware substrate;
secondly, the wavelength of an infrared heat radiation source of non-ionic radiation is 2.8-16 mu m, the temperature is 765-150 ℃, the ultraviolet light curing wavelength is 245-331nm, and the energy is 3590kJ/mol, so that the coating is cured quickly.
2. The wood product substrate photocuring waterborne base coating nonionic radiation rapid curing method according to claim 1, characterized in that the photocuring waterborne coating is composed of the following raw materials in percentage by mass: 2.0 percent of 2-hydroxy-2-methyl-1-propiophenone, 39.2 percent of EA, 10.5 percent of PUA, 2.4 percent of flatting agent, 0.3 percent of thickening agent, 0.1 percent of wetting agent and 45.5 percent of water.
3. The wood product substrate photocuring waterborne priming coating nonionic radiation rapid curing method according to claim 1 or 2, characterized in that the infrared absorption spectrum wavelength of the nonionic radiation is set to three sections of 2.8 μm, 5-8 μm and 13-16 μm, the temperature of the first section infrared heat radiation source is 765-550 ℃, the temperature of the second section infrared heat radiation source is 300-150 ℃, and the temperature of the third section infrared heat radiation source is 150-100 ℃, and the coating can be rapidly dried for 3-15 minutes at the same time.
4. The wood product substrate photocuring waterborne base coating nonionic radiation rapid curing method as recited in claim 2, wherein the ultraviolet absorption wavelength of 2-hydroxy-2-methyl-1-propiophenone in the ultraviolet light curing process is 245nm, 280nm, 331nm.
5. The wood product substrate photocuring water-based base coating nonionic radiation rapid curing method as recited in claim 1, wherein the photocuring water-based paint is coated by blade coating, roller coating, dip coating, curtain coating and spray coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211355316.3A CN115672697A (en) | 2022-11-01 | 2022-11-01 | Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211355316.3A CN115672697A (en) | 2022-11-01 | 2022-11-01 | Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115672697A true CN115672697A (en) | 2023-02-03 |
Family
ID=85048411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211355316.3A Pending CN115672697A (en) | 2022-11-01 | 2022-11-01 | Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115672697A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787388A (en) * | 2017-05-12 | 2018-11-13 | 佛山宜可居新材料有限公司 | It is a kind of to form the production technology and production equipment of DE Specular Lighting decorative effect on artificial board surface using powdery paints |
-
2022
- 2022-11-01 CN CN202211355316.3A patent/CN115672697A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787388A (en) * | 2017-05-12 | 2018-11-13 | 佛山宜可居新材料有限公司 | It is a kind of to form the production technology and production equipment of DE Specular Lighting decorative effect on artificial board surface using powdery paints |
Non-Patent Citations (2)
| Title |
|---|
| 方俊;: "MDF木质家具静电粉末涂装影响因素分析", 涂层与防护 * |
| 王一建;骆剑;费海峰;张凯;章意坚;毛海波;周涵;: "人造板粉末涂装红外加热快速固化技术", 涂料技术与文摘 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1153685C (en) | Process for the preparation of decorated substrate | |
| US7749607B2 (en) | Conductive emulsion for preparing surface for powder coating | |
| US20160024331A1 (en) | Polymerizable Thiol-ene Ink and Coating Composition | |
| CN110104960B (en) | Environment-friendly decorative glass and preparation method thereof | |
| JPH02269777A (en) | Radiation-curable coating composition which forms transparent, abrasion resistant coloring coating | |
| RU2367525C2 (en) | Method to produce powder coatings | |
| CN104194613A (en) | Recoatable UV-curing colored one-step-coating aluminum powder paint and preparation method thereof | |
| CN107972155B (en) | Electrostatic coating method for powder coating of medium-density fiberboard | |
| CA2457494A1 (en) | An ultra-violet radiation curable ink composition and a process for its application on glass substrates | |
| CN115672697A (en) | Photocuring water-based priming coating nonionic radiation rapid curing method for wood product base material | |
| CN106862041A (en) | Real colour table material and its coating process | |
| GB2270922A (en) | Actinic radiation-curable colored coating composition for use in vacuum-forming film,vacuum-forming film and vacuum-formed product. | |
| JPH08245802A (en) | Ultraviolet curing method | |
| JP2021084967A (en) | Thermosetting water-soluble coating composition for glass, coating method for vial container and glass component, and method for producing vial container and glass component coated article | |
| JPH0117426B2 (en) | ||
| CN115960535B (en) | LED-UV cured spray-coating color modifier for furniture, and preparation method and application thereof | |
| KR20120060457A (en) | UV curable Coating or Adhesion Compositions for Difficulty Adhesion Metal and a Method for Preparation of the Same | |
| CN111715492B (en) | Coating process of finishing varnish on integrated plate | |
| CN106085319A (en) | A kind of dual cure transfer film, then glue composition and preparation method thereof | |
| CN105670489A (en) | Color-adjustable UV coating and spray coating use method thereof | |
| WO2002094453A2 (en) | Powder coated porous substrate and a method for powder coating a porous substrate | |
| JPH047065A (en) | Method for applying photo-setting paint | |
| JPH04182330A (en) | Exterior colored glass | |
| JPS59169851A (en) | Polyvinyl chloride dispersion paint precoated steel plate | |
| JPS6430676A (en) | Method for applying ultraviolet-curing coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230203 |
|
| RJ01 | Rejection of invention patent application after publication |