CN114891433A - One-coating colored UV coating with metal-like effect and preparation method thereof - Google Patents
One-coating colored UV coating with metal-like effect and preparation method thereof Download PDFInfo
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- CN114891433A CN114891433A CN202210487635.3A CN202210487635A CN114891433A CN 114891433 A CN114891433 A CN 114891433A CN 202210487635 A CN202210487635 A CN 202210487635A CN 114891433 A CN114891433 A CN 114891433A
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- silver paste
- acrylic resin
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- 238000000576 coating method Methods 0.000 title claims abstract description 101
- 239000011248 coating agent Substances 0.000 title claims abstract description 99
- 230000000694 effects Effects 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 101
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 75
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000002245 particle Substances 0.000 claims abstract description 47
- 229910052709 silver Inorganic materials 0.000 claims abstract description 43
- 239000004332 silver Substances 0.000 claims abstract description 43
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 41
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 41
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 38
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 38
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 36
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 35
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000004964 aerogel Substances 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 239000000178 monomer Substances 0.000 claims abstract description 18
- 238000009736 wetting Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000003973 paint Substances 0.000 claims description 53
- 238000001723 curing Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 23
- 239000006185 dispersion Substances 0.000 claims description 22
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 16
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 16
- 239000003085 diluting agent Substances 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 8
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 14
- 238000004321 preservation Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 7
- 229920003023 plastic Polymers 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000004965 Silica aerogel Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 238000010521 absorption reaction Methods 0.000 description 12
- 229910021485 fumed silica Inorganic materials 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- RIWRBSMFKVOJMN-UHFFFAOYSA-N 2-methyl-1-phenylpropan-2-ol Chemical compound CC(C)(O)CC1=CC=CC=C1 RIWRBSMFKVOJMN-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- FDSUVTROAWLVJA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OCC(CO)(CO)COCC(CO)(CO)CO FDSUVTROAWLVJA-UHFFFAOYSA-N 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009974 thixotropic effect Effects 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001586 aluminite Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229940099259 vaseline Drugs 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of coatings, and particularly relates to a metal-imitating one-coating colored UV coating which comprises the following raw materials in parts by weight: 20-40 parts of ultraviolet curing resin, 5-10 parts of thermoplastic acrylic resin, 5-10 parts of active monomer, 5-15 parts of silicon dioxide aerogel particles, 20-30 parts of ethyl acetate, 14-30 parts of butyl acetate, 5-10 parts of silver paste, 0.2-1 part of wetting dispersant and 1-4 parts of photoinitiator; it also discloses a preparation method. The coating prepared by the invention not only has excellent metal-like effect, but also has the effects of heat preservation, heat insulation and silence, has the characteristics of simple preparation process, energy consumption reduction, environmental friendliness, product yield improvement and production cost saving, has good wear resistance and chemical resistance, has good bonding force on various plastic substrates, and can be used for protecting various plastic substrates.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a one-coating colored UV coating with a metal-like effect and a preparation method thereof.
Background
At present, various plastics are widely applied to the life of people, and meanwhile, the appearance requirements of people on plastic products are more and more colorful. Among them, the appearance decoration effect of the imitation metal is also receiving public attention. At present, the plastic metal-like effect process comprises the following steps: imitation metal paint spraying, electroplating, vacuum plating, gold stamping and other processes. But the three processes of electroplating, vacuum plating and gold stamping are complex. The imitation metal coating spraying process has the advantages of short processing period, high qualification rate, low investment, low comprehensive cost, greenness and environmental protection, and is widely applied to 3C industries such as notebook computers, mobile phones and smart homes.
At present, the PU metal-like primer and UV varnish top-coat two-coat or three-coat process is commonly adopted in the industry to achieve the metal-like appearance effect, and one-coat UV with the metal-like effect is also adopted, such as the one-coat UV introduced by patent CN 110358438A. The difference from this patent is: this patent is big through adding specific surface area, and the oil absorption is big, and the silica aerogel granule that the thixotropy is strong can obviously increase the thixotropy of paint, prevents that silver powder from taking place to subside in the wet film state, promotes the arrangement of silver powder on the paint film surface, can show the imitation metal effect who promotes the coating. Patent CN110358438A has added fumed silica, but the patent does not mention the parameters of the fumed silica such as specific surface area, oil absorption and the like, and the fumed silica with large specific surface area and oil absorption is not used for increasing the thixotropy of paint and the arrangement effect of silver powder by selecting the fumed silica with large specific surface area and oil absorption, but is used as a flatting agent to flatly polish the coating, so that the finishing paint becomes a matte UV finishing paint. In addition, the selected silica aerogel particles of the patent are specific gasThe phase silica has a higher specific surface area (500 m) 2 /g–1000m 2 /g), whereas the fumed silica with the largest specific surface area on the market today has a specific surface area of 380m 2 Therefore, the silica aerogel particles have better thixotropy and better silver powder arrangement effect than fumed silica. In addition, the silicon dioxide aerogel has a three-dimensional nano pore structure, high porosity (80-99.8%), ultralow thermal conductivity (as low as 12 mW/m.K), and effects of heat preservation, heat insulation, sound insulation and the like, and has the effects of heat preservation, heat insulation and sound absorption after being added into paint and cured. Meanwhile, the silica aerogel particles have the characteristic of high transmittance, so that the deep curing of the coating is facilitated, and the wear resistance of the coating is improved; and the high light transmittance is favorable for the metallic luster reflection of the silver powder in the paint film, and does not influence the metal imitation effect.
However, the silica aerogel particles have a large oil absorption and poor wettability, resulting in poor dispersibility, and even if the silica aerogel particles are dispersed under a high-speed dispersion condition, the silica aerogel particles cannot be uniformly dispersed, resulting in easy occurrence of particles, poor permeability and adverse effect on the metal-like effect of the coating. This patent is through the technology of grinding, makes silica aerogel granule homodisperse, obtains fine permeability, thixotropy to improve the imitative metallic effect of coating.
Disclosure of Invention
The invention provides a one-coating colored UV coating which has good wear resistance, excellent metal-like effect and the effects of heat preservation, heat insulation, sound insulation and the like. The metal-like coating is used in the fields of 3C, household appliances and the like, has a metal-like effect and has a high-grade appearance. Meanwhile, the coated product has the effects of heat preservation, heat insulation and silence. In addition, the abrasion resistance and chemical resistance of the UV coating can protect the coated product from abrasion.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first-coating colored UV coating with a metal-like effect comprises the following raw materials in parts by weight: 20-40 parts of ultraviolet curing resin, 5-10 parts of thermoplastic acrylic resin, 5-10 parts of active monomer, 5-15 parts of silicon dioxide aerogel particles, 20-30 parts of ethyl acetate, 14-30 parts of butyl acetate, 5-10 parts of silver paste, 0.2-1 part of wetting dispersant and 1-4 parts of photoinitiator.
Preferably, the feed comprises the following raw materials in parts by weight: 30 parts of ultraviolet curing resin, 6 parts of thermoplastic acrylic resin, 5 parts of active monomer, 10 parts of silicon dioxide aerogel particles, 20 parts of ethyl acetate, 19.5 parts of butyl acetate, 6 parts of silver paste, 0.5 part of wetting dispersant and 3 parts of photoinitiator.
Preferably, the feed comprises the following raw materials in parts by weight: 30 parts of ultraviolet curing resin, 6 parts of thermoplastic acrylic resin, 5 parts of active monomer, 15 parts of silicon dioxide aerogel particles, 20 parts of ethyl acetate, 14.5 parts of butyl acetate, 6 parts of silver paste, 0.5 part of wetting dispersant and 3 parts of photoinitiator.
A preparation method of a metal-like one-coating colored UV coating comprises the following steps:
s1, grinding silicon dioxide aerogel particles
Adding an active monomer, a wetting dispersant and ethyl acetate into a container, adding silicon dioxide aerogel particles while stirring, dispersing for 30 minutes at the rotating speed of 800-;
s2, silver paste soaking
Mixing butyl acetate and silver paste according to a certain proportion, and soaking the silver paste for more than 12 hours for later use;
s3 dissolution of high molecular weight acrylic resin
Adding part of butyl acetate into a container, adding the thermoplastic acrylic resin while stirring, and dispersing at the rotating speed of 800-;
s4 preparation of coating
Adding the dissolved thermoplastic acrylic resin, the ground silicon dioxide aerogel particle slurry and the soaked silver paste into a dispersion kettle, uniformly mixing, adding the photoinitiator and the ultraviolet curing resin, and dispersing for 20 minutes at the rotation speed of 800 plus one year 1200 rpm to prepare the metal-like coating.
Preferably, the fineness of the ground particles in the step S1 is less than 1 μm.
Preferably, the ratio of butyl acetate to silver paste in step S2 is 1: 1.
preferably, the imitation metal paint prepared in the step S4 is coated by air spraying after being diluted with a diluent in the coating preparation process, and the coating is baked at about 50 ℃ for 3-5min after being coated on the surface of the object, and then transferred to a UV furnace for 800- 2 Curing with the energy of (1).
Preferably, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Preferably, the thickness of the coating is controlled within 10-15 microns.
The coating prepared by the invention not only has an excellent metal-like effect, but also has the effects of heat preservation, heat insulation and silence, has the characteristics of simple preparation process, energy consumption reduction, environmental friendliness, product yield improvement and production cost saving, has good wear resistance and good chemical resistance, has good bonding force on various plastic substrates (such as PC, ABS, PC + ABS and the like), and can be used for protecting various plastic substrates.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
The paint preparation formula comprises:
| serial number | Material(s) | Model number | Adding amount of |
| 1 | Thermoplastic acrylic resin | Degaland (degaland) 890 | 6 |
| 2 | Ultraviolet light curing resin | Yangxing chemical 6195- | 30 |
| 3 | Reactive monomer | Dipentaerythritol hexaacrylate | 5 |
| 4 | Silica aerogel particles | Guangdong Erishen A650 aerogel particles | 10 |
| 5 | Ethyl acetate | 20 | |
| 6 | Acetic acid butyl ester | 19.5 | |
| 7 | Wetting and dispersing agent | EFKA-4010 | 0.5 |
| 8 | Photoinitiator | Basff Darocur1173 | 3 |
| 9 | Silver paste | Aika HPZ1255IL | 6 |
The preparation method of the coating comprises the following steps:
s1, grinding the silicon dioxide aerogel particles: adding a solvent ethyl acetate, UV monomer dipentaerythritol hexaacrylate and a wetting dispersant 4010 into a dispersion kettle, dispersing for 5 minutes at the rotating speed of 1000 revolutions per minute of 800-;
s2, silver paste soaking: adding the Ika silver paste HP Z1255IL into another container, adding butyl acetate with the same mass, and soaking for more than 12 hours for later use;
s3, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 600 plus materials at 800 r/min, adding the thermoplastic acrylic resin M890 while dispersing, then dispersing at the rotation speed of 800 plus materials at 1000 r/min, and completely dissolving the thermoplastic acrylic resin for later use;
s4, preparing the paint: adding the dissolved thermoplastic acrylic resin, the ground silica aerogel particle slurry and the soaked silver paste into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173 and the ultraviolet curing resin 6195-.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1, after the mixture is diluted, coating in an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, transferring the object to a UV furnace and using the object at 1000mJ/cm 2 Curing with left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Example 2
The paint preparation formula comprises:
the preparation method of the coating comprises the following steps:
s1, grinding the silicon dioxide aerogel particles: adding a solvent ethyl acetate, UV monomer dipentaerythritol pentaacrylate and a wetting dispersant 4010 into a dispersion kettle, dispersing for 5 minutes at the rotating speed of 1000 revolutions per minute of 800-;
s2, silver paste soaking: adding the Ika silver paste HP Z1255IL into another container, adding butyl acetate with the same mass, and soaking for more than 12 hours for later use;
s3, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 500 plus one year of 800 revolutions per minute, adding the thermoplastic acrylic resin M890 while dispersing, then dispersing at the rotation speed of 800 plus one year of 1000 revolutions per minute, and completely dissolving the thermoplastic acrylic resin for later use;
s4, preparing the paint: adding the dissolved thermoplastic acrylic resin, the ground silica aerogel particle slurry and the soaked silver paste into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173 and the ultraviolet curing resin 6195-.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1, after the mixture is diluted, coating in an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, transferring the object to a UV furnace and using the object at 1000mJ/cm 2 Curing by left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Example 3
The preparation formula of the coating comprises:
| serial number | Material(s) | Model number | Adding amount of |
| 1 | Thermoplastic acrylic resin | Degaland M890 | 6 |
| 2 | Ultraviolet light curing resin | Yangxing chemical 6195- | 30 |
| 3 | Reactive monomer | Dipentaerythritol hexaacrylate | 5 |
| 4 | Silica aerogel particles | Carbopt MT1100 aerogel particles | 15 |
| 5 | Ethyl acetate | 20 | |
| 6 | Acetic acid butyl ester | 14.5 | |
| 7 | Wetting dispersant | EFKA-4010 | 0.5 |
| 8 | Photoinitiator | Basf Darocur1173 | 3 |
| 9 | Silver paste | Aika HPZ1255IL | 6 |
The preparation method of the coating comprises the following steps:
s1, grinding the silicon dioxide aerogel particles: adding a solvent ethyl acetate, UV monomer dipentaerythritol hexaacrylate and a wetting dispersant 4010 into a dispersion kettle, dispersing for 5 minutes at a rotating speed of 1000 revolutions per minute of 800-;
s2, silver paste soaking: adding the Ika silver paste HP Z1255IL into another container, adding butyl acetate with the same mass, and soaking for more than 12 hours for later use;
s3, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 500 plus one year of 800 revolutions per minute, adding the thermoplastic acrylic resin M890 while dispersing, then dispersing at the rotation speed of 800 plus one year of 1000 revolutions per minute, and completely dissolving the thermoplastic acrylic resin for later use;
s4, preparing the paint: adding the dissolved thermoplastic acrylic resin, the ground silica aerogel particle slurry and the soaked silver paste into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173 and the ultraviolet curing resin 6195-.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1, after the mixture is diluted, coating in an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, and transferring to a UV furnaceMiddle used 1000mJ/cm 2 And (4) curing by using left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Comparative example 1
The preparation formula of the coating comprises:
the preparation method of the coating comprises the following steps:
s1, grinding silicon dioxide by a precipitation method: adding a solvent ethyl acetate, UV monomer dipentaerythritol hexaacrylate and a wetting dispersant 4010 into a dispersion kettle, dispersing for 5 minutes at the rotation speed of 1000 revolutions per minute of 800-;
s2, silver paste soaking: adding the Ika silver paste HP Z1255IL into another container, adding butyl acetate with the same mass, and soaking for more than 12 hours for later use;
s3, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 500 plus one year of 800 revolutions per minute, adding the thermoplastic acrylic resin M890 while dispersing, then dispersing at the rotation speed of 800 plus one year of 1000 revolutions per minute, and completely dissolving the thermoplastic acrylic resin for later use;
s5, preparing the paint: adding the dissolved thermoplastic acrylic resin, the ground precipitation-method silicon dioxide slurry and the soaked silver slurry into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173 and ultraviolet curing resin 6195-.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1 (weight ratio), and then coating by adopting an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, transferring the object to a UV furnace and using the object at 1000mJ/cm 2 Curing by left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Comparative example 2
The preparation formula of the coating comprises:
| serial number | Material(s) | Model number | Adding amount of |
| 1 | Thermoplastic acrylic resin | Degaland M890 | 6 |
| 2 | Ultraviolet light curing resin | Yangxing chemical 6195- | 30 |
| 3 | Reactive monomer | Dipentaerythritol hexaacrylate | 5 |
| 4 | Fumed silica | Degussa a380 | 10 |
| 5 | Ethyl acetate | 20 | |
| 6 | Acetic acid butyl ester | 19.5 | |
| 7 | Wetting and dispersing agent | EFKA-4010 | 0.5 |
| 8 | Photoinitiator | Basff Darocur1173 | 3 |
| 9 | Silver paste | Aika HPZ1255IL | 6 |
The preparation method of the coating comprises the following steps:
s1, grinding fumed silica: adding a solvent ethyl acetate, UV monomer dipentaerythritol hexaacrylate and a wetting dispersant 4010 into a dispersion kettle, dispersing for 5 minutes at the rotation speed of 1000 revolutions per minute of 800-;
s2, silver paste soaking: adding the Ika silver paste HP Z1255IL into another container, adding butyl acetate with the same mass, and soaking for more than 12 hours for later use;
s3, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 500 plus one hour per minute, adding the thermoplastic acrylic resin M890 while dispersing, and then dispersing at the rotation speed of 800 plus one hour per minute to completely dissolve the thermoplastic acrylic resin for later use.
S4, preparing the paint: and adding the dissolved thermoplastic acrylic resin, the ground gas silicon slurry and the soaked silver slurry into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173 and ultraviolet curing resin 6195-.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1, after the mixture is diluted, coating in an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, transferring the object to a UV furnace and using the object at 1000mJ/cm 2 Curing by left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Comparative example 3
The preparation formula of the coating comprises:
the preparation method of the coating comprises the following steps:
s1, silver paste soaking: adding the silver paste HP Z1255IL into another container, adding butyl acetate with the same quality, and soaking for more than 12 hours for later use;
s2, dissolving the thermoplastic acrylic resin: adding the residual butyl acetate into a dispersion kettle, starting the rotation speed of 500 plus one year of 800 revolutions per minute, adding the thermoplastic acrylic resin M890 while dispersing, then dispersing at the rotation speed of 800 plus one year of 1000 revolutions per minute, and completely dissolving the thermoplastic acrylic resin for later use;
s3, preparing the paint: adding the dissolved thermoplastic acrylic resin and the soaked silver paste into a dispersion kettle, uniformly mixing, adding a photoinitiator 1173, an ultraviolet curing resin 61457, a UV monomer dipentaerythritol pentaacrylate and a wetting dispersant 4010, dispersing for 10 minutes at the rotation speed of 800 plus one year/min to prepare a pre-dispersion liquid, then adding the Kabot MT1100 aerogel particles while dispersing, and dispersing for 20 minutes at the rotation speed of 800 plus one year/min to prepare the metal-like coating.
The preparation process of the coating comprises the following steps:
the metal-like one-coat UV paint is diluted by a diluent according to the weight ratio of 1: 1, after the mixture is diluted, coating in an air spraying mode; coating the paint on the surface of an object, controlling the film thickness to be 10-15 microns, baking for 3-5 minutes at about 50 ℃, transferring the object to a UV furnace and using the object at 1000mJ/cm 2 Curing by left and right energy.
In the invention, the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
Case comparison results
The test method comprises the following steps:
a. adhesion force: the adhesion test is carried out according to the method specified in GB/T9826, wherein 100/100 shows that 10 × 10 grids are scribed on the coating, and the coating does not fall off after the test of 100 grids;
RCA abrasion resistance: RCA paper bag abrasion tester (Norman Tool RCA Abrader), load 175g, and the number of times the paint film was broken was recorded. Placing the sample and the grinding medium for 24 hours at 23 +/-2 ℃ and 50 +/-10% relative humidity before testing;
c. hardness: pencil hardness tester, mitsubishi pencil, H, 750 g;
d. storage stability: sealing and storing the produced paint, placing the paint in a constant temperature environment of 50 ℃, storing the paint for 180 days, and taking out the paint to observe whether the paint is agglomerated and caked;
e. metallic effect (L value): comparing the metal effect through the L value, measuring the color difference value of the surface of the paint film by using a color difference meter under a D65 light source, and taking the L value, wherein the larger the L value is, the better the metal effect is;
f. chemical resistance test: coating vaseline on the surface of a paint film, then placing the paint film in a constant-temperature constant-humidity box (the temperature is 60 ℃ and the humidity is 95%) for 72 hours, taking out the paint film, wiping the paint film clean by using a rag, and observing whether the paint film is discolored, foamed and the like;
g. testing the heat preservation and insulation effect: after the coating is sprayed on the plate and cured, the temperature T1 on one side of the plate is maintained at 40 ℃, the temperature T2 is measured by an infrared thermometer on the other side after 5 minutes, the temperature difference delta T between the two sides of the plate is T1-T2, and the larger the delta T is, the better the heat insulation effect is;
h. and (3) testing the sound insulation effect: according to the GB/T8485 standard.
And (4) analyzing results:
firstly, comparing comparative example 1 with comparative example 2 and example 2, it can be seen that: fumed silica and silica aerogel particles with large oil absorption and good thixotropy are added in the formula, so that the arrangement of silver powder is facilitated, the metal imitation effect of the coating is improved, and the effect of the silica aerogel particles is better than that of the fumed silica;
secondly, the comparison between example 3 and example 2 shows that: the more silica aerogel particles are added, the better the thixotropy is, the more the arrangement of the silver powder is facilitated, and the better the metal imitation effect is;
third, the comparison of example 2 with example 1 shows that: the larger the specific surface area and the larger the oil absorption, the better the thixotropy, the more favorable the arrangement of the silver powder and the better the metal imitation effect.
Fourthly, comparing the comparative example 3 with the example 2, the following results can be obtained: the silicon dioxide aerogel particles are not easy to disperse due to larger specific surface area and are easy to agglomerate into particles, so that the metal imitation effect of the silicon dioxide aerogel particles is influenced on the surface of the coating; after being ground, the silicon dioxide aerogel particles can be uniformly dispersed in the coating, and the coating has excellent light transmittance and does not influence the metal effect of the coating.
The action principle is as follows:
the silver paste in the paint is actually an aluminum sheet, has high specific gravity, is easy to precipitate in the paint, and is agglomerated and caked; the silica aerogel granule that this patent added, the oil absorption is big, and the thixotropy is fabulous, stores the transportation in-process at paint, can prevent subside, the caking of aluminite powder, obviously promotes its storage stability.
The specific surface area and the oil absorption of the silicon dioxide aerogel particles used in the coating are obviously larger than those of common silicon dioxide, and the silicon dioxide aerogel particles have better thixotropy and anti-settling property, so that silver powder is not easy to settle in a wet film state, and is better arranged on the surface of a paint film, and the metal-like effect of the coating is improved.
Compared with the traditional precipitation method silicon dioxide extinction powder, the silicon dioxide aerogel particles used in the coating have lower impurity content (the precipitation method silicon dioxide impurity content is high, the silicon dioxide purity is generally about 93 percent, the gas phase method silicon dioxide impurity content is very low, and the silicon dioxide aerogel particles can reach more than 99 percent), have better permeability, do not influence the metal-like effect of the coating, and simultaneously do not influence the deep curing of the coating, so that the wear resistance of the coating is better.
The silicon dioxide aerogel particles used in the coating have large specific surface area and are difficult to wet and disperse, the common high-speed dispersion process is difficult to fully wet and disperse, the silicon dioxide aerogel particles are fully wetted and uniformly dispersed by the grinding process, and good permeability is obtained without influencing the metal imitation effect of the coating.
The silicon dioxide aerogel particles used in the coating have a three-dimensional nano pore structure, have high porosity (80-99.8%), have the effects of heat preservation, heat insulation, sound insulation and the like, and have the effects of heat preservation, heat insulation and sound absorption after being added into the paint.
The patent has the advantages that:
comparison with CN108102442A
The CN108102442A patent does not consider the settleability of silver paste, and does not add any thixotropic auxiliary agent in the coating, so that the metal-like effect is not excellent enough. In addition, after long-term storage and transportation, silver paste can agglomerate, and the metal texture is influenced. The thixotropic auxiliary agent can prevent silver paste in the coating from settling and agglomerating during storage and transportation.
Silica aerogel granule has been added in this patent coating, makes coating have very strong touch change nature, can strengthen the imitative metallic effect of coating, also can prevent that the silver thick liquid in the coating from taking place to subside and reunite storing and transportation in-process, guarantees the storage stability of coating.
In addition, the silicon dioxide aerogel particles used in the method have large oil absorption and good permeability, and do not influence the metal imitation effect of the coating; meanwhile, the thixotropy is good, the arrangement of the silver powder can be further improved, and the metal imitation effect of the coating is increased.
Comparison with CN101157813A
The CN101157813A patent uses a ternary vinyl chloride-vinyl acetate copolymer, contains chlorine, does not meet the requirement of environmental protection, and the copolymer is eliminated. In addition, the UV curing resin and the initiator are not added in the patent, the paint belongs to self-drying paint, has poor wear resistance and chemical resistance, is commonly used as a primer, is matched with UV finish paint, and has the disadvantages of complex process, high energy consumption, low economy and environmental protection. The coating belongs to UV curing coating, can obtain a coating with good wear resistance and chemical resistance by only spraying and curing once, and has the advantages of simple process, low energy consumption and high economic benefit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The metal-imitating primary-coating colored UV coating is characterized by comprising the following raw materials in parts by weight: 20-40 parts of ultraviolet curing resin, 5-10 parts of thermoplastic acrylic resin, 5-10 parts of active monomer, 5-15 parts of silicon dioxide aerogel particles, 20-30 parts of ethyl acetate, 14-30 parts of butyl acetate, 5-10 parts of silver paste, 0.2-1 part of wetting dispersant and 1-4 parts of photoinitiator.
2. The metal-like effect one-coat colored UV coating material as claimed in claim 1, characterized by comprising the following raw materials in parts by weight: 30 parts of ultraviolet curing resin, 6 parts of thermoplastic acrylic resin, 5 parts of active monomer, 10 parts of silicon dioxide aerogel particles, 20 parts of ethyl acetate, 19.5 parts of butyl acetate, 6 parts of silver paste, 0.5 part of wetting dispersant and 3 parts of photoinitiator.
3. The metal-like effect one-coat colored UV coating material as claimed in claim 1, characterized by comprising the following raw materials in parts by weight: 30 parts of ultraviolet curing resin, 6 parts of thermoplastic acrylic resin, 5 parts of active monomer, 15 parts of silicon dioxide aerogel particles, 20 parts of ethyl acetate, 14.5 parts of butyl acetate, 6 parts of silver paste, 0.5 part of wetting dispersant and 3 parts of photoinitiator.
4. A method for preparing a metal-like effect one-coat colored UV coating according to any one of claims 1 to 3, comprising the steps of:
s1, grinding silicon dioxide aerogel particles
Adding an active monomer, a wetting dispersant and ethyl acetate into a container, adding silicon dioxide aerogel particles while stirring, dispersing for 30 minutes at the rotating speed of 800-;
s2, silver paste soaking
Mixing butyl acetate and silver paste according to a certain proportion, and soaking the silver paste for more than 12 hours for later use;
s3 dissolution of high molecular weight acrylic resin
Adding part of butyl acetate into a container, adding thermoplastic acrylic resin while stirring, and dispersing at the rotating speed of 800-1200 rpm until the high molecular weight acrylic resin is completely dissolved for later use;
s4 preparation of coating
And adding the dissolved thermoplastic acrylic resin, the ground silicon dioxide aerogel particle slurry and the soaked silver paste into a dispersion kettle, uniformly mixing, adding a photoinitiator and ultraviolet curing resin, and dispersing for 20 minutes at the rotating speed of 800 plus one year/minute of 1200 rpm to prepare the metal-like coating.
5. The method for preparing a metal-like effect one-coat colored UV paint according to claim 4, wherein the fineness of the ground paint in the step S1 is less than 1 micron.
6. The preparation method of the metal-like heat-insulating UV coating material as claimed in claim 4, wherein the ratio of butyl acetate to silver paste in step S2 is 1: 1.
7. the method as claimed in claim 4, wherein the step S4 is carried out by diluting with diluent, spraying with air, baking at about 50 deg.C for 3-5min, transferring into UV furnace, and spraying with 800-1200mJ/cm 2 Curing with the energy of (1).
8. The method for preparing the metal-like effect one-coat colored UV coating according to claim 7, wherein the diluent comprises the following raw materials in percentage: 40% of ethyl acetate, 20% of butyl acetate, 20% of methyl isobutyl ketone, 10% of propylene glycol methyl ether and 10% of diacetone alcohol.
9. The method for preparing a metal-like effect one-coat colored UV paint according to claim 7, wherein the thickness of the paint coating is controlled to be 10-15 μm.
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Application publication date: 20220812 |