CN116355495A - Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof - Google Patents
Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof Download PDFInfo
- Publication number
- CN116355495A CN116355495A CN202310406826.7A CN202310406826A CN116355495A CN 116355495 A CN116355495 A CN 116355495A CN 202310406826 A CN202310406826 A CN 202310406826A CN 116355495 A CN116355495 A CN 116355495A
- Authority
- CN
- China
- Prior art keywords
- component
- double
- paint
- parts
- coating material
- 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
- 239000003973 paint Substances 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000576 coating method Methods 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 title claims abstract description 48
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims description 18
- 239000004593 Epoxy Substances 0.000 claims abstract description 35
- 239000002987 primer (paints) Substances 0.000 claims abstract description 34
- 239000004814 polyurethane Substances 0.000 claims abstract description 27
- 229920002635 polyurethane Polymers 0.000 claims abstract description 27
- 239000005002 finish coating Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 45
- 239000006185 dispersion Substances 0.000 claims description 19
- 239000006184 cosolvent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 12
- 239000003822 epoxy resin Substances 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- 230000000844 anti-bacterial effect Effects 0.000 claims description 10
- 239000003899 bactericide agent Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- 239000005056 polyisocyanate Substances 0.000 claims description 9
- 229920001228 polyisocyanate Polymers 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 8
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 7
- 125000001931 aliphatic group Chemical group 0.000 claims description 7
- 239000012467 final product Substances 0.000 claims description 7
- 229920000058 polyacrylate Polymers 0.000 claims description 7
- 239000003269 fluorescent indicator Substances 0.000 claims description 6
- 230000003449 preventive effect Effects 0.000 claims description 6
- 239000002318 adhesion promoter Substances 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- 125000000524 functional group Chemical group 0.000 claims description 4
- 239000004922 lacquer Substances 0.000 claims description 4
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 3
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical compound O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 229940116423 propylene glycol diacetate Drugs 0.000 claims description 3
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 2
- 229960002887 deanol Drugs 0.000 claims description 2
- 239000012972 dimethylethanolamine Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 2
- 230000036541 health Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 20
- 238000001035 drying Methods 0.000 description 15
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000012855 volatile organic compound Substances 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 6
- 239000005022 packaging material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- -1 aliphatic isocyanate Chemical class 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- RUPBZQFQVRMKDG-UHFFFAOYSA-M Didecyldimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC RUPBZQFQVRMKDG-UHFFFAOYSA-M 0.000 description 2
- 240000002989 Euphorbia neriifolia Species 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 2
- 239000013556 antirust agent Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 244000236521 Bupleurum rotundifolium Species 0.000 description 1
- 241001081179 Litsea Species 0.000 description 1
- 235000012854 Litsea cubeba Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- 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
-
- 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
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a multifunctional water-based paint double-coating material for LED packaging, which sequentially comprises a double-component water-based epoxy primer coating and a double-component water-based polyurethane finish coating from inside to outside. The paint film has the advantages of good insulating property, strong adhesive force, water resistance, moisture resistance, mildew resistance, corrosion resistance, ultraviolet light resistance, high temperature resistance, bending resistance, small viscosity, long application period, low VOC content, health, environmental protection and the like, and can meet the packaging requirements of LEDs.
Description
Technical Field
The invention belongs to the technical field of water-based paint, and particularly relates to a multifunctional water-based paint double-coating material for LED packaging and a preparation method thereof.
Background
With the further expansion of the LED market demands in China and the world, the LED light-emitting technology with the advantages of energy conservation, environmental protection and the like is attractive in various countries, has wide development prospect, is hopeful to replace the traditional light source and becomes a new generation solid cold light source. LED display products have developed quite rapidly in recent years, and potting has played a very critical role as a key technology for LED displays. The encapsulating technology is a technology for reasonably arranging, packaging or connecting all parts forming the electronic components according to requirements, and achieves the functions of environmental isolation and protection. The function of the electronic device is to strengthen the integrity of the electronic device and improve the resistance to external impact and vibration; the insulation between the internal components and the circuits is improved; the components and the circuits are prevented from being directly exposed to the environment, and the waterproof and dampproof performances of the device are improved.
In the past twenty years, the device packaging of the LEDs in China basically realizes mass industrialization, and the international advanced level is reached, but the LED packaging materials and the packaging process still have great gap from the foreign ones, more than half of core technologies and patents are monopolized by several companies in the United states, japan and Germany, and the performances of the packaging materials directly influence the brightness, the appearance and the service life of the LED lamps, so that the development of the LED industry in China is limited to a certain extent. Therefore, the packaging material for the LED with excellent performance and the matched application process are developed, and the packaging material has great significance for the improvement of the whole LED industry in China.
At present, the LED packaging material mainly comprises high-transparency resins such as epoxy resin, organic silicon modified epoxy resin and the like. The epoxy resin for LED encapsulation has not been suitable for the application of the LED industry due to the defects of poor heat resistance, easy yellowing, large internal stress and the like. The organic silicon resin has excellent performance, is an ideal LED packaging material and has great development potential, but also has the problems of insufficient mechanical performance and poor adhesive property, and has certain limit on the application. It is therefore particularly important to develop materials that meet the requirements of LED packages.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the multifunctional water-based paint double-coating material for LED packaging and the preparation method thereof are provided by the invention, and the multifunctional water-based paint double-coating material comprises a double-component water-based epoxy transparent primer coating and a double-component water-based polyurethane transparent finish coating, and a paint film of the multifunctional water-based paint double-coating material has the performance advantages of good insulating property, strong adhesive force, water resistance, moisture resistance, mildew resistance, corrosion resistance, ultraviolet light resistance, high temperature resistance, bending resistance, low viscosity, long pot life, low VOC content, health, environmental protection and the like, and can meet the packaging requirements of LEDs.
The technical aim of the invention is realized by the following technical scheme:
the multifunctional water-based paint double-coating material for LED packaging comprises a double-component water-based epoxy primer coating and a double-component water-based polyurethane finish coating from inside to outside.
Preferably, the two-component waterborne epoxy primer coating is formed by spraying a two-component waterborne epoxy primer, wherein the two-component waterborne epoxy primer comprises a component A and a component B, and the component A comprises the following raw materials in parts by weight: aqueous epoxy resin: 80.0-90.0 parts; leveling agent: 0.1-0.5 part; and (3) a thickening agent: 0.1-0.5 part; a first cosolvent: 0.4-0.8 part; adhesion promoters: 0.8-1.6 parts; mildew preventive: 0.3-0.7 part; a bactericide: 0.1-0.5 part; flash rust inhibitor: 1.5-2.5 parts; water: 5.5-13.9 parts; the component B comprises the following raw materials in parts by weight: amine curing agent: 82.0-88.0 parts; a second cosolvent: 11.0-17.0 parts; dispersing agent: 0.4-0.8 part; wetting agent: 0.3-0.5 part; the weight ratio of the component A to the component B is (80-120): (40-60).
Preferably, the first cosolvent is ethylene glycol.
Preferably, the second cosolvent is composed of dipropylene glycol methyl ether and ethylene glycol monobutyl ether according to the weight ratio of (6.0-9.0) to (5.0-8.0).
Preferably, the two-component waterborne polyurethane finish paint coating is formed by spraying two-component waterborne polyurethane finish paint, and the two-component waterborne polyurethane finish paint comprises main paint and a curing agent, wherein the main paint comprises the following raw materials in parts by weight: aqueous hydroxy acrylic dispersion: 45.0-51.0 parts; aqueous hydroxy polyacrylate dispersion: 28.0-32.0 parts; third cosolvent: 1.8-3.8 parts; neutralizing agent: 0.1-0.5 part; dispersing agent: 0.1-0.3 part; wetting agent: 0.1-0.3 part; defoaming agent: 0.1-0.3 part; leveling agent: 0.1-0.5 part; fluorescent indicator: 1.5-2.5 parts; mildew preventive: 0.1-0.5 part; a bactericide: 0.1-0.5 part; silica sol: 4.8-7.2 parts; water: 6.7-12.1 parts; the curing agent comprises the following raw materials in parts by weight: hydrophilic aliphatic polyisocyanates: 34.0-38.0 parts; lipophilic aliphatic polyisocyanates: 44.0-48.0 parts; propylene glycol methyl ether acetate: 8.0-12.0 parts; propylene glycol diacetate: 6.0-10.0 parts; the equivalent molar ratio of-NCO functional groups in the main lacquer to-OH functional groups in the curing agent is 1.1-1.3.
Preferably, the third cosolvent is composed of dipropylene glycol methyl ether and propylene glycol butyl ether according to the weight ratio of (0.6-1.4) to (1.2-2.4).
Preferably, the aqueous hydroxyacrylic acid dispersion has a solids content of 42 wt.% to 48 wt.%, and a hydroxyl content of 3.6 wt.% to 4.2 wt.% based on solids.
Preferably, the aqueous hydroxy polyacrylate dispersion has a solids content of 40wt% to 45wt% and a hydroxyl content of 1.0wt% to 3.0wt% based on solids.
Preferably, the neutralizing agent is dimethylethanolamine.
Preferably, siO is used in the silica sol 2 The concentration is 30-33 wt%, the pH value is 9-11, and the average particle size is 10-15nm.
The invention further aims at providing a preparation method of the multifunctional water-based paint double-coating material for LED packaging.
The preparation method of the multifunctional water-based paint double-coating material for LED packaging comprises the following steps: (1) preparing a two-component waterborne epoxy primer: (1.1) preparation of A component: mixing the formulas of the component A, and dispersing to obtain the component A; (1.2) preparation of a component B: mixing the formulas of the component B, and filtering to obtain the component B; (1.3) the A component and the B component are mixed according to the weight ratio of (80-120): (40-60) mixing, and standing to obtain the final product;
(2) Preparing a two-component waterborne polyurethane finish paint: (2.1) preparing a main paint: after mixing the formulas of the main paint, dispersing to obtain the main paint; (2.2) preparation of a curing agent: mixing the formulas of the curing agent, and filtering to obtain the curing agent; (2.3) uniformly mixing the main paint and the curing agent according to the NCO/OH equivalent ratio of n (-NCO): n (-OH) =1.1-1.3, and standing to obtain the final product;
and (3) spraying the two-component waterborne epoxy primer prepared in the step (1) on a substrate, curing to obtain the two-component waterborne epoxy primer coating, spraying the two-component waterborne polyurethane finish prepared in the step (2) on the two-component waterborne epoxy primer coating, and curing to obtain the two-component waterborne polyurethane finish coating, so that a multifunctional waterborne paint double-coating material is formed on the substrate.
Preferably, the viscosity of the cup number 2 of the component A obtained after the dispersion in the step (1.1) is 30-50 s/23+/-0.5 ℃.
Preferably, in the step (1.3), the weight ratio of the component a to the component B is 100: 50.
Preferably, the viscosity of the main paint obtained after dispersion in the step (2.1) is 30-40 s/23+/-0.5 ℃ in a field No. 2 cup.
The beneficial effects of the invention are as follows:
(1) The two-component waterborne epoxy primer and the two-component waterborne polyurethane finishing paint used by the multifunctional waterborne paint double-coating material for LED packaging belong to two-component waterborne paint products, the activation period of the two-component waterborne epoxy primer and the two-component waterborne polyurethane finishing paint reaches more than 4 hours, and the index requirement of the activation period of conventional industrial production can be met, so that the final product has the advantages of strong adhesive force, high paint film hardness, good scratch resistance, breakdown voltage resistance, dielectric constant, volume resistivity and the like, and meets the index requirement.
(2) The multifunctional water-based paint double-coating material for LED packaging has excellent waterproof function, the coating material has excellent normal-temperature water resistance, and after the paint film of the LED display screen main board after 7 days of drying is subjected to 720-hour water resistance inspection, the paint film has no abnormal phenomenon. The test result of hot water resistance (water temperature is less than or equal to 80 ℃) under the condition of electrifying the display screen shows that the main board of the display screen is immersed in water, electrified and lighted, and the abnormal conditions such as lamp extinction, lamplight color change and the like are avoided in 72 hours.
(3) The multifunctional water-based paint double-coating material for LED packaging has excellent dampproof and high-temperature-resistant functions: 1) High temperature and humidity resistance: meets the requirements of the standard IPC-TM-650.2.6.3.7; 2) The thermal shock resistance meets the requirements of the standard IPC-TM-650 2.6.7.1A.
(4) The multifunctional water-based paint double-coating material for LED packaging has excellent mildew-proof function, corrosion-proof function and ultraviolet light-proof function. The mildew-proof performance of the product meets the GB/T1741-2007 index requirement, and the inspection result is qualified; in the salt spray resistance test process, the surface of the coating has no phenomena of corrosion, air bubbles, falling and white spots. The product has good artificial aging resistance, and the coating is not foamed or peeled off after 1000 hours, and has no crack; pulverizing to powder of less than or equal to 1 level; the color change is less than or equal to 2 grades.
(5) When the multifunctional water-based paint double-coating material for LED encapsulation is coated, the content of Volatile Organic Compounds (VOC) is effectively controlled within 100g/l, and the multifunctional water-based paint double-coating material is a truly healthy and environment-friendly water-based paint product.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Examples 1 to 5:
the preparation method of the multifunctional water-based paint double-coating material for LED packaging comprises the following steps:
(1) Preparing a two-component waterborne epoxy primer:
(1.1) preparation of A component: sequentially adding water-based epoxy resin, a flatting agent, a thickening agent, glycol, an adhesion promoter, a mildew inhibitor, a bactericide, a flash rust inhibitor and water into a dispersion cylinder according to parts by weight, dispersing for 30-40 minutes at a medium speed, wherein the dispersing speed at the medium speed is 800-1200r/min, sampling and detecting the viscosity of a finished product until the viscosity of a finished product 'yantian No. 2 cup' is 30-50 s/23+/-0.5 ℃, and obtaining a component A;
(1.2) preparation of a component B: adding an amine curing agent, dipropylene glycol methyl ether, ethylene glycol monobutyl ether, a dispersing agent and a wetting agent into a dispersing cylinder according to parts by weight, dispersing at a medium speed of 800-1200r/min for 20-30 minutes, filtering and packaging to obtain a component B;
(1.3) mixing the component A with the component B according to the weight ratio of 100:50, mixing and standing to obtain the product;
(2) Preparing a two-component waterborne polyurethane finish paint:
(2.1) preparing a main paint: adding water-based hydroxyl acrylic acid dispersoid, water-based hydroxyl polyacrylate dispersoid, dipropylene glycol methyl ether, propylene glycol butyl ether, neutralizer, dispersing agent, wetting agent, defoamer, flatting agent, fluorescent indicator, mildew inhibitor, bactericide, silica sol and water into a dispersion tank according to parts by weight, and dispersing at a medium speed of 800-1200r/min for 30-40 min; sampling and detecting the viscosity of the finished product until the viscosity of a cup No. 2 of the rock field of the finished product is 30-40 s/23+/-0.5 ℃, and obtaining the main paint;
(2.2) preparation of a curing agent: hydrophilic aliphatic isocyanate, lipophilic aliphatic isocyanate, propylene glycol methyl ether acetate and propylene glycol diacetate are added into a dispersing cylinder according to the weight parts, dispersed for 10-20 minutes at medium speed, filtered and packaged to obtain the curing agent;
(2.3) uniformly mixing the main paint and the curing agent according to the NCO/OH equivalent ratio of n (-NCO): n (-OH) =1.1-1.3, and standing to obtain the final product;
and (3) spraying the two-component waterborne epoxy primer prepared in the step (1) on a substrate, curing to obtain the two-component waterborne epoxy primer coating, spraying the two-component waterborne polyurethane finish prepared in the step (2) on the two-component waterborne epoxy primer coating, and curing to obtain the two-component waterborne polyurethane finish coating, so that a multifunctional waterborne paint double-coating material is formed on the substrate.
The starting materials used in examples 1-5 were all commercially available, wherein the starting materials in the A component were:
aqueous epoxy resin: supplied by the American Limited liability company of Henschel advanced materials
The PZ 3961-1 solid '1-type' epoxy resin aqueous emulsion is a low-viscosity environment-friendly aqueous epoxy resin emulsion which can be directly used for metal substrates, and aqueous metal coating based on the emulsion has rapid 'surface drying' performance, excellent cohesiveness and flexibility, good hardness growth performance and corrosion resistance.
Leveling agent: TEGO Glide 450 leveling agent.
And (3) a thickening agent: rheolate212 polyurethane thickener supplied by Hongkong Chen Litsea Ltd.
Adhesion promoters: EP 805 epoxy phosphate adhesion promoter offered by Guangdong Shundeyi curing engineering Co., ltd.
Mildew preventive: fungipo-351 mildew inhibitor offered by Union Fine chemistry Co., ltd.
A bactericide: the water-based bactericide ACTICIDE EW-PASTE provided by THOR British Tol.
Flash rust inhibitor: anti-flash rust agent FA-179 provided by Hamming (a modesty).
The raw materials in the component B are as follows:
amine curing agent: supplied by the American Limited liability company of Henschel advanced materials
3986 an epoxy curing agent, which is used in the manufacture of a cured product,
3986 epoxy hardener is a modified polyamine adduct dissolved in water, free of volatile amines and solvents; the color of the formed film is light,the yellowing is extremely light under ultraviolet rays; the coating has rapid chemical curing performance, so that the coating has extremely rapid drying and curing speeds; the anti-rust agent is not needed, and the anti-rust agent has excellent chemical resistance and anti-corrosion performance; specially for formulating water-dilutable epoxy resin systems, having a longer product pot life (also known as pot life), which can be combined with +.>
The two-component waterborne epoxy primer prepared from the PZ 3961-1 waterborne epoxy resin has the advantages of low Volatile Organic Compound (VOC) content, high drying speed, good bonding performance, high flexibility, excellent corrosion resistance, long product pot life and the like.
A second cosolvent: the second cosolvent is formed by mixing dipropylene glycol methyl ether and ethylene glycol monobutyl ether according to a certain weight ratio (6.0-9.0) (5.0-8.0), has extremely strong dissolving power and compatibility, can effectively dissolve a modified polyamine addition product epoxy curing agent used in the product, reduces the viscosity of a water-based epoxy primer B component, improves the leveling property of a primer film, adjusts the volatilization rate of a cosolvent system to a required level, and finally obtains the drying speed of the paint film and the leveling effect of the paint film which are suitable for customers.
Dispersing agent: BYK-190 dispersant.
Wetting agent: SN-1070 anti-oil wetting agent provided by Guangzhou Sano environmental protection materials, SN-1070 is a non-silicon polymer type anti-oil agent, has special effects on foam killer, release agent, oil pit shrinkage caused by oil stain on the surface of a substrate and the like, can strongly reduce the surface tension of a system, thereby providing strong substrate wetting and anti-pollution capabilities, providing reliable wetting and leveling effects in most polluted environments, and not affecting recoating property.
The main paint comprises the following raw materials:
aqueous hydroxy acrylic dispersion: AQUAPAC-8240 resin provided by Jiangsu Fuqisen New Material Co-Ltd, AQUAPAC-8240 is a water-based hydroxyl acrylic dispersion capable of flexibly matching a water-based curing agent and an oil-based curing agent, the solid content is (45+/-1)%, the hydroxyl content (based on solid content) is 3.9%, and the acrylic dispersion resin has the advantages of high hydroxyl content, high gloss, high fullness, excellent water resistance and the like.
Aqueous hydroxy polyacrylate dispersion: provided by kesi Innovative Polymer (China Co., ltd.)
A2427，/>
A2427 is an aqueous hydroxy polyacrylate dispersion resin with excellent combination of properties, and has a solids content of about 42% and a hydroxy content of about 2.0%. The acrylic acid dispersion resin can be directly used for preparing single-component water-based acrylic acid paint, can be matched with isocyanate curing agent to prepare water-based double-component polyurethane paint with more excellent performance, has the advantages of high drying speed, high hardness, excellent water resistance and chemical resistance, scratch resistance, impact resistance and the like, and can be mixed and spliced with another matrix resin AQUAPAC-8240 in the main paint of the product, so that the drying speed of a paint film can be obviously improved, the water resistance and chemical resistance of the product are further improved, and the leveling property and defoaming resistance of the paint film are improved.
Dispersing agent: BYK-190 dispersant.
Wetting agent: TEGO Tain 4200 substrate wetting agent.
Defoaming agent: BYK-024 defoamer provided by east Yang chemical industry (hong Kong) Co.
Leveling agent: BYK-333 leveling agent.
Fluorescent indicator: the preparation scheme of the water-based fluorescent indicator is as follows: the solid fluorescent whitening agent CBS-X provided by Pasteur new material Co-Ltd is used as a solute, and is dispersed in water at high speed to form uniform and stable fluorescent indicator liquid with the concentration of 2%.
Mildew preventive: fungipo-351 mildew inhibitor offered by Union Fine chemistry Co., ltd.
A bactericide: the water-based bactericide ACTICIDE EW-PASTE provided by THOR British Tol.
Silica sol: concentration of S-1430B, S-1430B silica Sol (SiO) 2 The percentage) is 30.12%, the pH value is 10.05, the average grain diameter is 13.2nm, and the reference of the silica sol in the main paint can obviously improve the high temperature resistance and the ageing resistance of the paint film.
The raw materials in the curing agent are as follows:
hydrophilic aliphatic polyisocyanates: bayhydur XP 2655,Bayhydur XP 2655 provided by Kogyo Polymer (China) is a Kogyo third-generation sulfonate modified HDI trimer, is a hydrophilic aliphatic polyisocyanate based on Hexamethylene Diisocyanate (HDI), has moderate hydrophilicity and high functionality balance, and the waterborne two-component polyurethane coating prepared by using Bayhydur XP 2655 has the characteristics of quick drying and quick hardening, and has high final hardness of a paint film and excellent chemical resistance; the manual stirring can be realized without a cosolvent, the operation is more convenient, the dispersion is more uniform, and the compatibility of the polyisocyanate curing agent and the hydroxyl component can be obviously improved.
Lipophilic aliphatic isocyanates: desmodur N3900 provided by Kogyo Polymer (China) Inc., desmodur N3900 is a low viscosity aliphatic polyisocyanate resin containing Hexamethylene Diisocyanate (HDI), is a lipophilic polyisocyanate with excellent performance, and can remarkably improve the chemical resistance, weather resistance and the like of a paint film.
The amounts of the components of the two-component waterborne epoxy primer used for preparing the multifunctional waterborne paint double-coating materials for LED encapsulation of examples 1-5 are shown in Table 1;
the amounts of the components of the two-component aqueous polyurethane top coats used for preparing the multifunctional aqueous paint double-coating materials for LED encapsulation of examples 1-5 are shown in Table 2;
the viscosity of the A component, the viscosity of the main paint and the NCO/OH mole ratio of the main paint and the curing agent when mixed in the preparation of the multifunctional aqueous paint double-coating materials for LED packages of examples 1-5 are shown in Table 3.
Table 1: component amount (weight portion) of the two-component waterborne epoxy primer
Table 2: component amount (weight portion) of two-component waterborne polyurethane finishing paint
Table 3: the viscosity of the A component in examples 1 to 5, the viscosity of the main lacquer and the NCO/OH molar ratio of the main lacquer to the hardener
Test example:
the multifunctional water paint double-coating material for LED encapsulation of the embodiment 1-5 of the invention and the commercially available single-component water-based acrylic three-proofing paint are subjected to coating construction and performance detection.
The specific coating process comprises the following steps:
the construction substrate and the surface treatment thereof, the coating substrate is an LED display screen packaging main board (black or light green), the front and the back of the board are required to be coated, the dirt on the board surface is required to be removed before the coating, and dust-free cleaning and drying are ensured.
The coating process uses an air pressure spray gun or a special three-proofing paint machine to carry out coating construction, and the number of layers of coating is as follows: 2-3 times of double-component waterborne epoxy primer; and (3) double-component waterborne polyurethane finishing paint for 2-3 times. The dry film thickness of the paint film is controlled as follows: a two-component waterborne epoxy primer, 40-60 mu m; a double-component aqueous polyurethane finish paint, 40-60 mu m; the total thickness of the dry film of the paint film primer is controlled to be 80-100 mu m.
The temperature and the drying time of the paint film maintenance environment. For customers with baking conditions, it is recommended to set the temperature of the baking tunnel to 80 ℃ and the time for the wet film of coating to pass through the baking tunnel to be 5-8 minutes; and after the paint film is discharged from the drying tunnel, drying the paint film for 2 hours at normal temperature, and then coating the paint film for the next time or directly packaging the coated workpiece. For customers without baking conditions, after the first priming paint spraying is recommended, drying for 4 hours at normal temperature, and then spraying a priming paint; after finishing the spraying of the primer, drying for 6 hours at normal temperature, and then spraying the finish paint; the drying time between the two topcoats is 4 hours; and (3) after finishing the spraying of the finish paint, standing for 24 hours at normal temperature, and packaging the coated workpiece.
The test results are shown in Table 4.
Table 4: performance test results
As shown by the test results in the table 4, the activation periods of the two-component waterborne epoxy primer and the two-component waterborne polyurethane finishing paint used by the multifunctional waterborne paint double-coating material for LED packaging reach more than 4 hours, and the index requirements of the activation period of conventional industrial production can be met, so that the final product has the advantages of strong adhesive force, high paint film hardness, good scratch resistance, breakdown voltage resistance, dielectric constant, volume resistivity and the like, and all meet the index requirements;
after the multifunctional water-based paint double-coating material for LED packaging is dried for 7 days, the paint film of the main board of the LED display screen has no abnormal phenomenon after 720 hours of water resistance inspection. The test result of hot water resistance (water temperature is less than or equal to 80 ℃) under the condition of electrifying the display screen shows that the main board of the display screen is immersed in water, electrified and lighted, and no abnormal conditions such as lamp extinction, lamplight color change and the like exist in 72 hours;
the multifunctional water-based paint double-coating material for LED packaging has excellent dampproof and high-temperature-resistant functions: 1) High temperature and humidity resistance: meets the requirements of the standard IPC-TM-650.2.6.3.7; 2) The thermal shock resistance meets the requirements of the standard IPC-TM-650 2.6.7.1A;
the multifunctional water-based paint double-coating material for LED packaging has excellent mildew-proof function, corrosion-proof function and ultraviolet light-proof function. The mildew-proof performance of the product meets the GB/T1741-2007 index requirement, and the inspection result is qualified; in the salt spray resistance test process, the surface of the coating has no phenomena of corrosion, air bubbles, falling and white spots. The product has good artificial aging resistance, and the coating is not foamed or peeled off after 1000 hours, and has no crack; pulverizing to powder of less than or equal to 1 level; the color change is less than or equal to grade 2;
when the multifunctional water-based paint double-coating material for LED encapsulation is coated, the content of Volatile Organic Compounds (VOC) is effectively controlled within 100g/l, and the multifunctional water-based paint double-coating material is a truly healthy and environment-friendly water-based paint product.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The multifunctional water paint double-coating material for LED packaging is characterized in that: the multifunctional water-based paint double-coating material for LED packaging sequentially comprises a double-component water-based epoxy primer coating and a double-component water-based polyurethane finish coating from inside to outside.
2. The multifunctional water paint double-coating material for LED packaging according to claim 1, which is characterized in that: the double-component waterborne epoxy primer coating is formed by spraying a double-component waterborne epoxy primer, wherein the double-component waterborne epoxy primer comprises a component A and a component B, and the component A comprises the following raw materials in parts by weight:
aqueous epoxy resin: 80.0-90.0 parts;
leveling agent: 0.1-0.5 part;
and (3) a thickening agent: 0.1-0.5 part;
a first cosolvent: 0.4-0.8 part;
adhesion promoters: 0.8-1.6 parts;
mildew preventive: 0.3-0.7 part;
a bactericide: 0.1-0.5 part;
flash rust inhibitor: 1.5-2.5 parts;
water: 5.5-13.9 parts;
the component B comprises the following raw materials in parts by weight:
amine curing agent: 82.0-88.0 parts;
a second cosolvent: 11.0-17.0 parts;
dispersing agent: 0.4-0.8 part;
wetting agent: 0.3-0.5 part;
the weight ratio of the component A to the component B is (80-120): (40-60).
3. The multifunctional water paint double-coating material for LED packaging according to claim 2, which is characterized in that: the first cosolvent is ethylene glycol.
4. The multifunctional water paint double-coating material for LED packaging according to claim 2, which is characterized in that: the second cosolvent is composed of dipropylene glycol methyl ether and ethylene glycol monobutyl ether according to the weight ratio of (6.0-9.0) to (5.0-8.0).
5. The multifunctional water paint double-coating material for LED packaging according to claim 1, which is characterized in that: the double-component waterborne polyurethane finish paint coating is formed by spraying double-component waterborne polyurethane finish paint, and comprises main paint and a curing agent, wherein the main paint comprises the following raw materials in parts by weight:
aqueous hydroxy acrylic dispersion: 45.0-51.0 parts;
aqueous hydroxy polyacrylate dispersion: 28.0-32.0 parts;
third cosolvent: 1.8-3.8 parts;
neutralizing agent: 0.1-0.5 part;
dispersing agent: 0.1-0.3 part;
wetting agent: 0.1-0.3 part;
defoaming agent: 0.1-0.3 part;
leveling agent: 0.1-0.5 part;
fluorescent indicator: 1.5-2.5 parts;
mildew preventive: 0.1-0.5 part;
a bactericide: 0.1-0.5 part;
silica sol: 4.8-7.2 parts;
water: 6.7-12.1 parts;
the curing agent comprises the following raw materials in parts by weight:
hydrophilic aliphatic polyisocyanates: 34.0-38.0 parts;
lipophilic aliphatic polyisocyanates: 44.0-48.0 parts;
propylene glycol methyl ether acetate: 8.0-12.0 parts;
propylene glycol diacetate: 6.0-10.0 parts;
the equivalent molar ratio of-NCO functional groups in the main lacquer to-OH functional groups in the curing agent is 1.1-1.3.
6. The multifunctional water paint double-coating material for LED packaging according to claim 5, which is characterized in that: the third cosolvent is composed of dipropylene glycol methyl ether and propylene glycol butyl ether according to the weight ratio of (0.6-1.4) to (1.2-2.4).
7. The multifunctional water paint double-coating material for LED packaging according to claim 5, which is characterized in that: the aqueous hydroxyacrylic acid dispersion has a solids content of 42 wt.% to 48 wt.%, and a hydroxyl content of 3.6 wt.% to 4.2 wt.% based on solids.
8. The multifunctional water paint double-coating material for LED packaging according to claim 5, which is characterized in that: the aqueous hydroxy polyacrylate dispersion has a solids content of 40wt% to 45wt% and a hydroxyl content of 1.0wt% to 3.0wt% based on solids.
9. The multifunctional water paint double-coating material for LED packaging according to claim 5, which is characterized in that: the neutralizer is dimethylethanolamine.
10. A method for preparing the multifunctional water-based paint double-coating material for LED packaging according to any one of claims 1 to 9, which is characterized in that: the method comprises the following steps:
(1) Preparing a two-component waterborne epoxy primer:
(1.1) preparation of A component: mixing the formulas of the component A, and dispersing to obtain the component A;
(1.2) preparation of a component B: mixing the formulas of the component B, and filtering to obtain the component B;
(1.3) the A component and the B component are mixed according to the weight ratio of (80-120): (40-60) mixing, and standing to obtain the final product;
(2) Preparing a two-component waterborne polyurethane finish paint:
(2.1) preparing a main paint: after mixing the formulas of the main paint, dispersing to obtain the main paint;
(2.2) preparation of a curing agent: mixing the formulas of the curing agent, and filtering to obtain the curing agent;
(2.3) uniformly mixing the main paint and the curing agent according to the NCO/OH equivalent ratio of n (-NCO): n (-OH) =1.1-1.3, and standing to obtain the final product;
and (3) spraying the two-component waterborne epoxy primer prepared in the step (1) on a substrate, curing to obtain the two-component waterborne epoxy primer coating, spraying the two-component waterborne polyurethane finish prepared in the step (2) on the two-component waterborne epoxy primer coating, and curing to obtain the two-component waterborne polyurethane finish coating, so that a multifunctional waterborne paint double-coating material is formed on the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310406826.7A CN116355495A (en) | 2023-04-17 | 2023-04-17 | Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310406826.7A CN116355495A (en) | 2023-04-17 | 2023-04-17 | Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116355495A true CN116355495A (en) | 2023-06-30 |
Family
ID=86908286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310406826.7A Pending CN116355495A (en) | 2023-04-17 | 2023-04-17 | Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116355495A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497377A (en) * | 2016-11-07 | 2017-03-15 | 中山蓝海洋水性涂料有限公司 | Two-component waterborne polyurethane industrial paint with excellent physical properties and preparation method thereof |
| CN109233588A (en) * | 2017-05-09 | 2019-01-18 | 德莱特恩环保涂料(北京)有限公司 | A kind of double-component waterborne polyurethane finish compositions and paint base composition, and preparation method thereof |
| CN110003771A (en) * | 2019-03-25 | 2019-07-12 | 河北晨阳工贸集团有限公司 | A kind of wettable matched paint and preparation method thereof for touching wet trade |
| CN111500177A (en) * | 2020-05-15 | 2020-08-07 | 清远市实创涂料科技有限公司 | Two-component water-based finish paint based on oily polyisocyanate curing agent and preparation method thereof |
| CN115785781A (en) * | 2022-11-30 | 2023-03-14 | 浩力森涂料（上海）有限公司 | Two-component water-based hydroxyl acrylic coating |
-
2023
- 2023-04-17 CN CN202310406826.7A patent/CN116355495A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497377A (en) * | 2016-11-07 | 2017-03-15 | 中山蓝海洋水性涂料有限公司 | Two-component waterborne polyurethane industrial paint with excellent physical properties and preparation method thereof |
| CN109233588A (en) * | 2017-05-09 | 2019-01-18 | 德莱特恩环保涂料(北京)有限公司 | A kind of double-component waterborne polyurethane finish compositions and paint base composition, and preparation method thereof |
| CN110003771A (en) * | 2019-03-25 | 2019-07-12 | 河北晨阳工贸集团有限公司 | A kind of wettable matched paint and preparation method thereof for touching wet trade |
| CN111500177A (en) * | 2020-05-15 | 2020-08-07 | 清远市实创涂料科技有限公司 | Two-component water-based finish paint based on oily polyisocyanate curing agent and preparation method thereof |
| CN115785781A (en) * | 2022-11-30 | 2023-03-14 | 浩力森涂料（上海）有限公司 | Two-component water-based hydroxyl acrylic coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111019504B (en) | Waterborne polyurethane coating composition and application thereof | |
| CN111087906B (en) | Waterborne two-component polyurethane paint for galvanized sheet and preparation method thereof | |
| KR101715825B1 (en) | Non-solvent high-anticorrosive paint and silane containing high-anticorrosive paint and painting method of double-coated ultraweatheralbility steel structure using the high-anticorrosive paint | |
| CN111253825B (en) | Water-based acrylic acid graft modified polysiloxane coating, preparation method and application | |
| CN115011184A (en) | Inorganic hybrid-based water-based paint and preparation method and application thereof | |
| CN111777430B (en) | Water-based high-weather-resistance fair-faced concrete protective coating system and preparation method thereof | |
| CN116355495A (en) | Multifunctional water-based paint double-coating material for LED packaging and preparation method thereof | |
| CN110982387B (en) | Water-based epoxy coating with good adhesive force and corrosion resistance on surface of metal substrate and preparation method thereof | |
| CN110628291B (en) | Water-based polyurethane sound-deadening coating | |
| KR20120115027A (en) | Water dispersable polyurethane resin, method for preparing the same, and coating composition for pcm comprising the same | |
| CN112029382A (en) | Long-acting anticorrosion solvent-free universal epoxy coating and preparation method thereof | |
| CN111117455A (en) | High-solid-content high-weather-resistance varnish and preparation method thereof | |
| CN114806365A (en) | Water-based fluorocarbon coating and coating method thereof | |
| CN100999647A (en) | Elestic metallic surface paint for synthesizing resin curtain wall | |
| CN114539878B (en) | Special water-based epoxy paint for wet-on-wet and preparation method thereof | |
| CN115651468A (en) | High-salt-spray-resistance super-strong-adhesion two-component water-based three-proofing paint and preparation method thereof | |
| CN111019497B (en) | High-adhesion water-based polyurea colored paint and preparation method thereof | |
| CN110724433B (en) | Antifouling weather-resistant protective coating for reaction kettle equipment and preparation method thereof | |
| CN110655861B (en) | Epoxy tung oil-based waterborne polyurethane modified raw lacquer and preparation method thereof | |
| CN109627424B (en) | Preparation method and application of perfluoroalkyl side chain modified ketimine curing agent | |
| CN116463041A (en) | Double-component water-based polyurethane coating for coating of three-proofing paint machine and preparation method thereof | |
| CN114163648B (en) | Organic fluorine modified epoxy resin, preparation method and anticorrosive paint | |
| CN115785783B (en) | Weather-resistant floor paint and preparation method thereof | |
| CN113563798B (en) | Resin composition, adhesive, solvent-free flexible polysiloxane coating and application thereof | |
| CN115717013B (en) | Transparent powder coating composition and coating thereof |
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 |