CN113956782A - Water-based ultraviolet-curing elastic coating and preparation method thereof - Google Patents
Water-based ultraviolet-curing elastic coating and preparation method thereof Download PDFInfo
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- CN113956782A CN113956782A CN202111324855.6A CN202111324855A CN113956782A CN 113956782 A CN113956782 A CN 113956782A CN 202111324855 A CN202111324855 A CN 202111324855A CN 113956782 A CN113956782 A CN 113956782A
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- polyurethane acrylate
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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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 21
- 239000004814 polyurethane Substances 0.000 claims abstract description 117
- 229920002635 polyurethane Polymers 0.000 claims abstract description 117
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 101
- 239000000178 monomer Substances 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- UKQBWWAPJNHIQR-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.CCC(CO)(CO)CO UKQBWWAPJNHIQR-UHFFFAOYSA-N 0.000 claims description 14
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 11
- 239000012965 benzophenone Substances 0.000 claims description 11
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 claims description 6
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 4
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 4
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 claims description 4
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 4
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 4
- XRMBQHTWUBGQDN-UHFFFAOYSA-N [2-[2,2-bis(prop-2-enoyloxymethyl)butoxymethyl]-2-(prop-2-enoyloxymethyl)butyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(CC)COCC(CC)(COC(=O)C=C)COC(=O)C=C XRMBQHTWUBGQDN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 2
- ARXJGSRGQADJSQ-UHFFFAOYSA-N propylene glycol methyl ether Substances COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 16
- 230000001070 adhesive effect Effects 0.000 abstract description 16
- 230000007062 hydrolysis Effects 0.000 abstract description 16
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001723 curing Methods 0.000 description 59
- 239000003973 paint Substances 0.000 description 23
- 230000002087 whitening effect Effects 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 13
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 5
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 5
- 239000012948 isocyanate Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229940099259 vaseline Drugs 0.000 description 4
- WPDXVLVDHUDHPC-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound CCOCCOCCOCCOC(=O)C=C WPDXVLVDHUDHPC-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 150000002009 diols Chemical class 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical compound O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 1
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 1
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 description 1
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 description 1
- PCKZAVNWRLEHIP-UHFFFAOYSA-N 2-hydroxy-1-[4-[[4-(2-hydroxy-2-methylpropanoyl)phenyl]methyl]phenyl]-2-methylpropan-1-one Chemical compound C1=CC(C(=O)C(C)(O)C)=CC=C1CC1=CC=C(C(=O)C(C)(C)O)C=C1 PCKZAVNWRLEHIP-UHFFFAOYSA-N 0.000 description 1
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 1
- -1 alicyclic isocyanate Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting 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
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a water-based ultraviolet-curing elastic coating and a preparation method thereof. The water-based ultraviolet-curing elastic coating comprises the following components in parts by weight: 20-30 parts of waterborne polyurethane acrylate, 5-12 parts of functional monomer, 8-15 parts of hand-feeling elastic filler, 3-8 parts of matting powder and 40-60 parts of solvent; the aqueous polyurethane acrylate comprises a combination of soft-segment aqueous polyurethane acrylate and hard-segment aqueous polyurethane acrylate. The water-based ultraviolet-curing elastic coating provided by the invention has good adhesive force, wear resistance and hydrolysis resistance, and also has good matt effect and touch.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based ultraviolet-curing elastic coating and a preparation method thereof.
Background
With the improvement of living standard, the requirements of people on the quality of life are higher and higher. For daily necessities, brand-new and comfortable experiences are continuously pursued in both appearance and touch, and many high-grade products in the modern times begin to attract the attention of the public with beautiful and comfortable appearance and touch, so that the elastic touch paint is produced. The elastic hand feeling paint is also called as rubber paint or elastic paint, is in a matte or semi-matte state after being sprayed on the surface of an object, has quite fine and smooth hand feeling, elegant and solemn appearance, simultaneously has better scratch resistance, weather resistance and wear resistance, conforms to SGS green environmental protection, has no any damage to human bodies, has excellent operability and good adhesive force, and can cover flaws or water marks appearing in general injection molding. Therefore, the elastic touch paint has attractive appearance and comfortable physiological touch of human body, gradually occupies a place in the industries of automobile interior trim, electronic products and the like, and is increasingly favored.
In the traditional technology, most of elastic handfeel paint is a two-component system and is obtained by curing through the reaction of hydroxyl and isocyanate. For example, CN101921538A discloses an elastic feel paint, which is composed of a hydroxyl component a and a curing agent component B, wherein the hydroxyl component a is prepared from the following raw materials in percentage by weight: 35-38% of hydroxyl-containing linear saturated polyester resin, 0.1-0.3% of dibutyltin dilaurate catalyst, 0.5-1% of flatting agent, 6.5-7% of matting powder, 2-3% of polyurethane modified wetting dispersant, 2-3% of nano pigment and 48-53% of mixed solvent; the curing agent component B is prepared from the following raw materials in percentage by weight: 60-80% of HDI tripolymer and 20-40% of anhydrous butyl acetate; and mixing the hydroxyl component A and the curing agent component B to obtain the polyurethane elastic handfeel paint, wherein the equivalent ratio of-NCO of the HDI trimer of the curing agent component B to-OH of the hydroxyl-containing linear saturated polyester resin of the hydroxyl component A is 1.05-1.2. According to the technical scheme, the elastic hand feeling paint with color is obtained by curing hydroxyl and an isocyanate curing agent, but 1, 6-Hexamethylene Diisocyanate (HDI) is contained in curing components of the elastic hand feeling paint, so that the elastic hand feeling paint has high toxicity, is harmful to human bodies and causes environmental pollution, and the elastic hand feeling paint is prepared by mixing two components, so that the reaction time is long, and the production efficiency is low.
With the environmental concerns, the use of aqueous systems instead of organic solvents to prepare elastic feel paints has attracted attention. CN102002166A discloses a hydroxyl-containing polyurethane aqueous dispersion for an aqueous soft-feel coating and a preparation method thereof, wherein the hydroxyl-containing polyurethane aqueous dispersion is an aqueous dispersion formed by heating and polymerizing a hydroxyl-containing polyurethane resin by using 15-25 parts by weight of polycarbonate diol, 15-25 parts by weight of elastic polyester diol, 1-5 parts by weight of pentaerythritol, 2-5 parts by weight of carboxyl-containing diol dimethylolpropionic acid or dimethylolbutyric acid, 10-20 parts by weight of aliphatic or alicyclic isocyanate monomer and 0.1-1.0 part by weight of catalyst and solvent as raw materials, and then neutralizing, salifying, self-emulsifying and removing the solvent. The technical scheme adopts a self-emulsifying method to prepare the hydroxyl-containing polyurethane aqueous dispersion, meets the requirement of environmental protection, but an isocyanate curing agent still needs to be added in the coating curing process, and the coating curing process needs to be baked at high temperature or dried at normal temperature for a long time, so the reaction time is longer, and the production efficiency is lower.
CN104559784A discloses an elastic paint and a manufacturing method thereof, and a product sprayed with the elastic paint and a method thereof. The elastic paint comprises the following components in percentage by mass: 30-40% of film forming agent, 5-10% of elastic powder, 0.1-0.5% of defoaming agent, 10-15% of cosolvent, 5-8% of matting powder and the balance deionized purified water. The elastic paint provided by the technical scheme is water-based self-drying elastic paint which is prepared by spraying water-based resin serving as a film forming material and matched with elastic powder dispersed in water, and is used for baking for 30-40 minutes at 60-70 ℃. The elastic paint provided by the technology does not use an isocyanate curing agent, but still needs to be baked at high temperature or aired at normal temperature for a long time, so that the reaction time is long, and the production efficiency is low.
In summary, how to provide an elastic coating with low energy consumption, low solvent volatility, fast curing speed and high production efficiency has become a technical problem to be solved at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a water-based ultraviolet-curable elastic coating and a preparation method thereof. According to the invention, through the design of the components of the aqueous ultraviolet-curing elastic coating, the aqueous polyurethane acrylate and the functional monomer are matched for use, and the combination of the soft-segment aqueous polyurethane acrylate and the hard-segment aqueous polyurethane acrylate is further adopted, so that the prepared aqueous ultraviolet-curing elastic coating has better adhesive force, wear resistance and hydrolysis resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a water-based ultraviolet-curable elastic coating, which comprises the following components in parts by weight:
20-30 parts of waterborne polyurethane acrylate, 5-12 parts of functional monomer, 8-15 parts of hand-feeling elastic filler, 3-8 parts of matting powder and 40-60 parts of solvent;
the aqueous polyurethane acrylate comprises a combination of soft-segment aqueous polyurethane acrylate and hard-segment aqueous polyurethane acrylate.
According to the invention, through the design of the components of the aqueous ultraviolet-curing elastic coating, the aqueous polyurethane acrylate and the functional monomer are matched for use, and the combination of the soft-segment aqueous polyurethane acrylate and the hard-segment aqueous polyurethane acrylate is further adopted, so that the prepared aqueous ultraviolet-curing elastic coating has better adhesive force, wear resistance and hydrolysis resistance.
In the invention, the soft-segment waterborne polyurethane acrylate is used, so that the adhesive force of the waterborne ultraviolet curing elastic coating can be improved; the use of the hard-segment aqueous polyurethane acrylate can improve the wear resistance of the aqueous ultraviolet-curing elastic coating. In the invention, the aqueous ultraviolet curing elastic coating prepared by matching the two components has better adhesive force and wear resistance.
In the invention, the ultraviolet light is used for causing the aqueous polyurethane acrylate and the functional monomer to carry out curing reaction, so that the elastic coating has better chemical reagent resistance; meanwhile, through the use of the hand-feeling elastic filler and the matting powder, the prepared elastic coating has a good matte effect and a good touch.
In the present invention, the weight parts of the aqueous urethane acrylate may be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, or the like.
The functional monomer may be present in an amount of 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, or the like.
The weight portion of the hand feeling elastic filler can be 8 portions, 9 portions, 10 portions, 11 portions, 12 portions, 13 portions, 14 portions or 15 portions, etc.
The weight portion of the extinction powder can be 3 portions, 3.5 portions, 4 portions, 4.5 portions, 5 portions, 5.5 portions, 6 portions, 6.5 portions, 7 portions, 7.5 portions or 8 portions.
The solvent may be present in an amount of 40 parts, 42 parts, 44 parts, 46 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, or the like, by weight.
The following is a preferred technical solution of the present invention, but not a limitation to the technical solution provided by the present invention, and the object and advantageous effects of the present invention can be better achieved and achieved by the following preferred technical solution.
As a preferable technical scheme of the invention, the mass ratio of the soft-segment aqueous polyurethane acrylate to the hard-segment aqueous polyurethane acrylate is 1 (0.8-1.2).
In the invention, the mass ratio of the soft-segment aqueous polyurethane acrylate to the hard-segment aqueous polyurethane acrylate is controlled within a specific range, so that the prepared aqueous ultraviolet-curing elastic coating has good adhesive force and good wear resistance. If the content of the soft-segment waterborne polyurethane acrylate is high, the prepared waterborne ultraviolet curing elastic coating has poor wear resistance; if the content of the hard-segment aqueous polyurethane acrylate is high, the adhesive force of the prepared aqueous ultraviolet curing elastic coating is poor.
Preferably, the soft segment aqueous polyurethane acrylate is selected from aqueous polyester polyurethane acrylate and/or aqueous polyether polyurethane acrylate.
Preferably, the hard segment aqueous polyurethane acrylate is selected from aqueous polytetrahydrofuran polyurethane acrylate and/or aqueous polycarbonate polyurethane acrylate.
In a preferred embodiment of the present invention, the functional monomer is selected from any one or a combination of at least two of ethoxyethoxyethoxyethyl acrylate, tripropylene glycol diacrylate, 1, 6-hexanediol diacrylate, ethoxylated trimethylolpropane acrylate, pentaerythritol triacrylate, and ditrimethylolpropane tetraacrylate.
It is to be noted that ethoxyethoxyethoxyethyl acrylate may be abbreviated as EOEOEA, tripropylene glycol diacrylate as TPGDA, 1, 6-hexanediol diacrylate as HDDA, ethoxylated trimethylolpropane acrylate as EO3-TMPTA, pentaerythritol triacrylate as PET4A, and ditrimethylolpropane tetraacrylate as Di-TMPTTA.
Preferably, the functional monomer is selected from ethoxyethoxyethyl acrylate and/or ethoxylated trimethylolpropane acrylate.
Preferably, the functional monomer comprises a combination of ethoxyethoxyethyl acrylate and ethoxylated trimethylolpropane acrylate.
According to the invention, the water-based ultraviolet-curing elastic coating prepared by using the combination of ethoxy ethyl acrylate and ethoxylated trimethylolpropane acrylate as the functional monomer has better hydrolysis resistance.
As a preferred technical scheme of the invention, the hand feeling elastic filler is polyurethane hand feeling filler.
Preferably, D of the feel elastic filler90The particle size is 3 to 10 μm, and may be, for example, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm.
As a preferable technical scheme of the invention, the matting powder is any one or a combination of at least two of TS-100 matting powder, OK-520 matting powder and E-1011 matting powder.
Preferably, the solvent is selected from any one of propylene glycol methyl ether acetate, p-propylene glycol methyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether or diethylene glycol butyl ether or a combination of at least two of the above.
The invention selects the specific solvent, so that the prepared water-based ultraviolet-curing elastic coating meets the environmental protection requirement.
As a preferable technical scheme of the invention, the aqueous ultraviolet light curing elastic coating further comprises 1-3 parts of photoinitiator, for example, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts or 3 parts.
Preferably, the photoinitiator is selected from any one of 184, photoinitiator 127, photoinitiator 754, photoinitiator 819, benzophenone, or photoinitiator 1173, or a combination of at least two thereof.
The photoinitiator is selected from the group consisting of 184-hydroxycyclohexyl phenyl ketone, the photoinitiator 127 is 1,1' - (methylenebis-4, 1-phenylene) bis [ 2-hydroxy-2-methyl-1-propanone ], the photoinitiator 819 is phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide, and the photoinitiator 1173 is 2-hydroxy-2-methyl-1-phenyl-1-propanone.
Preferably, the photoinitiator is selected from the group consisting of benzophenone and photoinitiator 1173.
In the invention, the combination of benzophenone and the photoinitiator 1173 is selected as the photoinitiator, so that the waterborne polyurethane acrylate and the functional monomer can fully react, the balance of surface drying and inside drying can be achieved, and the elastic coating prepared by the method has better hydrolysis resistance, chemical reagent resistance, matte effect and better touch.
In a second aspect, the present invention provides a method for preparing the aqueous uv-curable elastic coating material according to the first aspect, the method comprising the following steps:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the hand feeling elastic filler, the matting powder and the optional photoinitiator into a container, and mixing to obtain a mixture;
(2) and (2) mixing the mixture obtained in the step (1) with a solvent to obtain the aqueous ultraviolet curing elastic coating.
According to the invention, the elastic coating which is good in uniformity and convenient to coat is prepared by controlling the adding sequence of the components of the water-based ultraviolet curing elastic coating. If all the components are added together for mixing, the prepared elastic coating has granular feel and is inconvenient to coat, and the prepared elastic coating has poor matte effect and touch feeling on the surface.
In a preferred embodiment of the present invention, the mixing in step (1) is performed by stirring.
Preferably, the rotation speed of the stirring is 300-800 rpm, for example, 300rpm, 350rpm, 400rpm, 450rpm, 500rpm, 550rpm, 600rpm, 650rpm, 700rpm, 750rpm, 800rpm, or the like.
Preferably, the stirring time is 30-60 min, such as 30min, 33min, 36min, 40min, 42min, 46min, 49min, 52min, 55min, 57min or 60 min.
In a preferred embodiment of the present invention, the mixing in step (2) is performed by stirring.
Preferably, the rotation speed of the stirring is 800-1000 rpm, for example, 800rpm, 820rpm, 840rpm, 860rpm, 880rpm, 900rpm, 920rpm, 940rpm, 960rpm, 980rpm or 1000rpm, etc.
Preferably, the stirring time is 20-40 min, for example, 20min, 22min, 24min, 26min, 28min, 30min, 32min, 34min, 36min, 38min or 40 min.
As a preferred technical scheme of the invention, the preparation method specifically comprises the following steps:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the hand feeling elastic filler, the matting powder and the optional photoinitiator into a container at 300-800 rpm, and stirring and mixing for 30-60 min to obtain a mixture;
(2) and (2) stirring the mixture obtained in the step (1) and a solvent for 20-40 min at 800-1000 rpm to obtain the water-based ultraviolet curing elastic coating.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the design of the components of the aqueous ultraviolet-curing elastic coating, the matching use of the aqueous polyurethane acrylate and the functional monomer, the selection of the photoinitiator and the combination of the soft-segment aqueous polyurethane acrylate and the hard-segment aqueous polyurethane acrylate, the prepared aqueous ultraviolet-curing elastic coating has better adhesive force, wear resistance and hydrolysis resistance, and the adhesive force is 5B; the surface of the coating film prepared by the method is not damaged after being worn for 300 times, the surface of the coating film is not whitened after being soaked in deionized water at the temperature of 80 ℃ for 1 hour, and the surface of the coating film is not changed after being coated with vaseline with the thickness of 1mm and standing for 1 week.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Some of the component sources in the examples and comparative examples are as follows:
soft segment aqueous urethane acrylate: honeycomb energy science and technology, Inc., E-8015, E8029; taiwan changxing chemical industry, 486S, 402S; japan asahi chemical company, T5652;
hard segment aqueous urethane acrylate: honeycomb energy science and technology, Inc., E-8024; taiwan changxing chemical industry, 485S, 470S; g3452, japan asahi chemical company;
polyurethane hand feeling filler: C-800T or C-800BK in ART PEARL series, south Imperial chemical industries, Inc.; 5070D in RHU series, Dari refining industries, Inc.;
TS-100 matting powder: degussa, ACEMATT series;
OK-520 matting agent: degussa, ACEMATT series;
e-1011 matting powder: degussa, ACEMATT series.
Example 1
The embodiment provides a water-based ultraviolet-curing elastic coating and a preparation method thereof, wherein the water-based ultraviolet-curing elastic coating comprises the following components in parts by weight:
26 parts of waterborne polyurethane acrylate, 8 parts of functional monomer, 10 parts of polyurethane hand feeling filler (C-800T), 4 parts of TS-100 matting powder, 2 parts of photoinitiator and 50 parts of ethylene glycol monobutyl ether;
the waterborne polyurethane acrylate consists of soft-stage waterborne polyurethane acrylate E-8015 and hard-stage waterborne polyurethane acrylate G3452 in a mass ratio of 1: 1;
the functional monomer consists of ethoxy ethyl acrylate and ethoxylated trimethylolpropane acrylate according to the mass ratio of 15: 3;
the photoinitiator consists of benzophenone and a photoinitiator 1173 in a mass ratio of 1:1.
The preparation method of the water-based ultraviolet-curing elastic coating comprises the following steps:
(1) sequentially adding waterborne polyurethane acrylate, a functional monomer, a polyurethane hand feeling filler (C-800T), TS-100 matting powder and a photoinitiator into a container at 500rpm, and stirring and mixing for 50min to obtain a mixture;
(2) and (3) stirring the mixture obtained in the step (1) and ethylene glycol monobutyl ether for 30min at 9000rpm to obtain the water-based ultraviolet curing elastic coating.
Example 2
The embodiment provides a water-based ultraviolet-curing elastic coating and a preparation method thereof, wherein the water-based ultraviolet-curing elastic coating comprises the following components in parts by weight:
24 parts of waterborne polyurethane acrylate, 10 parts of functional monomer, 8 parts of polyurethane hand feeling filler (C-800BK), 5 parts of OK-520 matting powder, 1 part of photoinitiator and 40 parts of propylene glycol methyl ether acetate;
the waterborne polyurethane acrylate is composed of soft-segment waterborne polyurethane acrylate E8029 and hard-segment waterborne polyurethane acrylate 470S according to the mass ratio of 1: 1.1;
the functional monomer consists of ethoxy ethyl acrylate and ethoxylated trimethylolpropane acrylate according to the mass ratio of 15: 3;
the photoinitiator consists of benzophenone and a photoinitiator 1173 in a mass ratio of 1:1.
The preparation method of the water-based ultraviolet-curing elastic coating comprises the following steps:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the polyurethane hand feeling filler (C-800BK), the OK-520 matting powder and the photoinitiator into a container at 600rpm, and stirring and mixing for 60min to obtain a mixture;
(2) and (2) stirring the mixture obtained in the step (1) and propylene glycol methyl ether acetate for 40min at 800rpm to obtain the aqueous ultraviolet curing elastic coating.
Example 3
The embodiment provides a water-based ultraviolet-curing elastic coating and a preparation method thereof, wherein the water-based ultraviolet-curing elastic coating comprises the following components in parts by weight:
30 parts of waterborne polyurethane acrylate, 12 parts of functional monomer, 15 parts of polyurethane hand feeling filler (5070D), 8 parts of E-1011 matting powder, 3 parts of photoinitiator and 60 parts of diethylene glycol monoethyl ether;
the waterborne polyurethane acrylate is composed of 486S of soft-segment waterborne polyurethane acrylate and 485S of hard-segment waterborne polyurethane acrylate according to the mass ratio of 1: 0.9;
the functional monomer consists of ethoxy ethyl acrylate and ethoxylated trimethylolpropane acrylate according to the mass ratio of 15: 3;
the photoinitiator consists of benzophenone and a photoinitiator 1173 in a mass ratio of 1:1.
The preparation method of the water-based ultraviolet-curing elastic coating comprises the following steps:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the polyurethane hand feeling filler (5070D), the E-1011 matting powder and the photoinitiator into a container at 700rpm, and stirring and mixing for 40min to obtain a mixture;
(2) and (2) stirring the mixture obtained in the step (1) and diethylene glycol monoethyl ether for 20min at 1000rpm to obtain the aqueous ultraviolet curing elastic coating.
Example 4
The embodiment provides a water-based ultraviolet-curing elastic coating and a preparation method thereof, wherein the water-based ultraviolet-curing elastic coating comprises the following components in parts by weight:
20 parts of waterborne polyurethane acrylate, 5 parts of functional monomer, 8 parts of polyurethane hand feeling filler (C-800T), 3 parts of TS-100 matting powder, 1.5 parts of photoinitiator and 40 parts of diethylene glycol butyl ether;
the water-based polyurethane acrylate consists of soft-stage water-based polyurethane acrylate 402S, T5652 and hard-stage water-based polyurethane acrylate E-8024 in a mass ratio of 0.5:0.5: 1;
the functional monomer consists of ethoxy ethyl acrylate, 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, ethoxylated trimethylolpropane acrylate and pentaerythritol triacrylate according to the mass ratio of 2:1:1:5: 1;
the photoinitiator consists of benzophenone and a photoinitiator 1173 in a mass ratio of 1:1.
The preparation method of the water-based ultraviolet-curing elastic coating comprises the following steps:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the polyurethane hand feeling filler (C-800T), the TS-100 matting powder and the photoinitiator into a container at 300rpm, and stirring and mixing for 60min to obtain a mixture;
(2) and (2) stirring the mixture obtained in the step (1) and diethylene glycol butyl ether for 40min at 800rpm to obtain the water-based ultraviolet curing elastic coating.
Example 5
This example provides an aqueous uv curable elastomeric coating and a method for preparing the same, which is different from example 1 only in that the functional monomer is ethoxylated trimethylolpropane acrylate, and the other conditions are the same as example 1.
Example 6
This example provides an aqueous uv curable elastomeric coating and a method for preparing the same, which is different from example 1 only in that the functional monomer is ethoxyethoxyethyl acrylate, and the other conditions are the same as example 1.
Example 7
This example provides an aqueous uv-curable elastomeric coating and a method for preparing the same, which is different from example 1 only in that the photoinitiator is benzophenone, and the other conditions are the same as example 1.
Example 8
This example provides an aqueous uv curable elastomeric coating and a method for preparing the same, which is different from example 1 only in that the photoinitiator is a photoinitiator 1173, and the other conditions are the same as example 1.
Example 9
The embodiment provides an aqueous ultraviolet curing elastic coating and a preparation method thereof, and the difference from the embodiment 1 is only that the aqueous polyurethane acrylate consists of soft-stage aqueous polyurethane acrylate E-8015 and hard-stage aqueous polyurethane acrylate G3452 in a mass ratio of 1:0.8, and other conditions are the same as the embodiment 1.
Example 10
The embodiment provides an aqueous ultraviolet curing elastic coating and a preparation method thereof, and the difference from the embodiment 1 is only that the aqueous polyurethane acrylate consists of soft-stage aqueous polyurethane acrylate E-8015 and hard-stage aqueous polyurethane acrylate G3452 according to the mass ratio of 1:1.2, and other conditions are the same as the embodiment 1.
Example 11
The embodiment provides an aqueous ultraviolet curing elastic coating and a preparation method thereof, and the difference from the embodiment 1 is only that the aqueous polyurethane acrylate consists of soft-stage aqueous polyurethane acrylate E-8015 and hard-stage aqueous polyurethane acrylate G3452 in a mass ratio of 1:0.5, and other conditions are the same as the embodiment 1.
Example 12
The embodiment provides an aqueous ultraviolet curing elastic coating and a preparation method thereof, and the difference from the embodiment 1 is only that the aqueous polyurethane acrylate consists of soft-stage aqueous polyurethane acrylate E-8015 and hard-stage aqueous polyurethane acrylate G3452 according to the mass ratio of 1:1.5, and other conditions are the same as the embodiment 1.
Comparative example 1
The comparative example provides an aqueous ultraviolet curing elastic coating and a preparation method thereof, and the difference from the example 1 is only that the aqueous polyurethane acrylate is only soft-segment aqueous polyurethane acrylate E-8015, and other conditions are the same as those in the example 1.
Comparative example 2
The comparative example provides an aqueous ultraviolet-curable elastic coating and a preparation method thereof, and the difference from the example 1 is only that the aqueous polyurethane acrylate is only the hard-segment aqueous polyurethane acrylate G3452, and other conditions are the same as the example 1.
The aqueous UV-curable elastic coatings provided in the above examples and comparative examples were coated on a PC substrate, left at 25 ℃ for 10min, dried in a 60 ℃ oven for 15min, and photo-cured under a UV lamp to obtain an elastic coating film having a thickness of 25 μm, wherein the photo-curing energy was 600mJ/cm2。
The properties of the elastic coating films provided in the above examples and comparative examples were tested as follows:
hydrolysis resistance: soaking the elastic coating films provided by the above examples and comparative examples in deionized water at 80 ℃ for 1h, and observing whether the surface of the elastic coating film generates whitening phenomenon;
chemical resistance: after the surface of the elastic coating film provided in the above examples and comparative examples was coated with vaseline having a thickness of 1mm, after standing for 1 week, the vaseline was removed and it was observed whether whitening occurred on the surface of the elastic coating film or whether the elastic coating film was corroded and dropped;
wear resistance: testing the abrasion resistance of the elastic coating film according to ASTM F2357, wherein the experimental load is 175g, the surface of the elastic coating film is observed whether to be damaged or not every 50 times of abrasion, and the abrasion times when the surface of the elastic coating film is abraded are recorded;
adhesion force: the adhesion of the elastomeric coating film was tested according to test method B of ASTM D3359.
TABLE 1
| Resistance to hydrolysis | Chemical resistance characteristics | Wear resistance/time | Adhesion force | |
| Example 1 | Without whitening | Without change | 300 | 5B |
| Example 2 | Without whitening | Without change | 300 | 5B |
| Example 3 | Without whitening | Without change | 300 | 5B |
| Example 4 | Without whitening | Without change | 300 | 5B |
| Example 5 | Slight whitening | Slight whitening | 250 | 4B |
| Example 6 | Slight whitening | Slight whitening | 200 | 5B |
| Example 7 | Whitening of the skin | Slight whitening | 250 | 5B |
| Example 8 | Whitening of the skin | Slight whitening | 250 | 5B |
| Example 9 | Without whitening | Without change | 300 | 5B |
| Example 10 | Without whitening | Without change | 300 | 5B |
| Example 11 | Without whitening | Slight corrosion | 250 | 4B |
| Example 12 | Without whitening | Slight corrosion | 200 | 5B |
| Comparative example 1 | Slight whitening | Whitening of the skin | 150 | 5B |
| Comparative example 2 | Slight whitening | Coating film dropping | 300 | 3B |
According to the invention, through the design of the components of the aqueous ultraviolet-curing elastic coating, the matching use of the aqueous polyurethane acrylate and the functional monomer, the selection of the photoinitiator and the combination of the soft-segment aqueous polyurethane acrylate and the hard-segment aqueous polyurethane acrylate, the prepared aqueous ultraviolet-curing elastic coating has better adhesive force, wear resistance and hydrolysis resistance, and the adhesive force is 5B; the surface of the coating film prepared by the method is not damaged after being worn for 300 times, the surface of the coating film is not whitened after being soaked in deionized water at the temperature of 80 ℃ for 1 hour, and the surface of the coating film is not changed after being coated with vaseline with the thickness of 1mm and standing for 1 week.
Compared with example 1, the elastic coating prepared by only using the ethoxylated trimethylolpropane acrylate as the functional monomer (example 5) or only using the ethoxyethoxyethoxyethyl acrylate as the functional monomer (example 6) has poorer hydrolysis resistance; if only benzophenone is used as the photoinitiator (example 7) or only photoinitiator 1173 is used as the photoinitiator (example 8), the elastic coating prepared has poor hydrolysis resistance and chemical resistance. Therefore, the elastic coating prepared by the invention has better hydrolysis resistance and chemical reagent resistance through the design of the components of the elastic coating.
Compared with the example 1, if the mass ratio of the soft-stage waterborne polyurethane acrylate to the hard-stage waterborne polyurethane acrylate is too small (example 11), the prepared paint film has poor chemical reagent resistance and adhesive force; if the mass ratio of the soft-stage aqueous urethane acrylate to the hard-stage aqueous urethane acrylate is too large (example 12), the chemical reagent resistance and the wear resistance of the prepared paint film are poor; if only the soft-segment waterborne polyurethane acrylate is adopted as the waterborne polyurethane acrylate (comparative example 1), the prepared paint film has poor hydrolysis resistance, chemical reagent resistance and wear resistance; if only the hard-segment waterborne polyurethane acrylate is adopted as the waterborne polyurethane acrylate (comparative example 2), the prepared paint film has poor hydrolysis resistance, chemical reagent resistance and adhesive force. Therefore, the elastic coating prepared by using the soft-segment aqueous polyurethane acrylate and the hard-segment aqueous polyurethane acrylate in a matching way and controlling the mass ratio of the soft-segment aqueous polyurethane acrylate to the hard-segment aqueous polyurethane acrylate within a specific range has better hydrolysis resistance and wear resistance, and also has better chemical reagent resistance and better adhesive force.
In conclusion, the waterborne ultraviolet curing elastic coating prepared by the invention has better adhesive force, wear resistance and hydrolysis resistance through the design of the components of the waterborne ultraviolet curing elastic coating, the matching use of the waterborne polyurethane acrylate and the functional monomer, the selection of the photoinitiator and the combination of the soft-segment waterborne polyurethane acrylate and the hard-segment waterborne polyurethane acrylate.
The applicant states that the present invention is illustrated by the detailed process flow of the present invention through the above examples, but the present invention is not limited to the above detailed process flow, that is, it does not mean that the present invention must rely on the above detailed process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The water-based ultraviolet-curing elastic coating is characterized by comprising the following components in parts by weight:
20-30 parts of waterborne polyurethane acrylate, 5-12 parts of functional monomer, 8-15 parts of hand-feeling elastic filler, 3-8 parts of matting powder and 40-60 parts of solvent;
the aqueous polyurethane acrylate comprises a combination of soft-segment aqueous polyurethane acrylate and hard-segment aqueous polyurethane acrylate.
2. The aqueous ultraviolet-curing elastic coating as claimed in claim 1, wherein the mass ratio of the soft-segment aqueous polyurethane acrylate to the hard-segment aqueous polyurethane acrylate is 1 (0.8-1.2);
preferably, the soft segment water-based polyurethane acrylate is selected from water-based polyester polyurethane acrylate and/or water-based polyether polyurethane acrylate;
preferably, the hard segment aqueous polyurethane acrylate is selected from aqueous polytetrahydrofuran polyurethane acrylate and/or aqueous polycarbonate polyurethane acrylate.
3. The aqueous uv-curable elastomeric coating according to claim 1 or 2, wherein the functional monomer is selected from any one of or a combination of at least two of ethoxyethoxyethyl acrylate, tripropylene glycol diacrylate, 1, 6-hexanediol diacrylate, ethoxylated trimethylolpropane acrylate, pentaerythritol triacrylate, ditrimethylolpropane tetraacrylate;
preferably, the functional monomer is selected from ethoxyethoxyethyl acrylate and/or ethoxylated trimethylolpropane acrylate;
preferably, the functional monomer comprises a combination of ethoxyethoxyethyl acrylate and ethoxylated trimethylolpropane acrylate.
4. The aqueous ultraviolet light-curable elastic coating material according to any one of claims 1 to 3, wherein the handle elastic filler is a polyurethane handle filler;
preferably, D of the feel elastic filler90The particle size is 3 to 10 μm.
5. The aqueous ultraviolet-curable elastic coating material according to any one of claims 1 to 4, wherein the matting powder is any one or a combination of at least two of TS-100 matting powder, OK-520 matting powder and E-1011 matting powder;
preferably, the solvent is selected from any one of propylene glycol methyl ether acetate, p-propylene glycol methyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether or diethylene glycol butyl ether or a combination of at least two of the above.
6. The aqueous ultraviolet light-cured elastic coating material as claimed in any one of claims 1 to 5, further comprising 1 to 3 parts of a photoinitiator;
preferably, the photoinitiator is selected from any one of 184, photoinitiator 127, photoinitiator 754, photoinitiator 819, benzophenone, or photoinitiator 1173, or a combination of at least two thereof;
preferably, the photoinitiator is selected from the group consisting of benzophenone and photoinitiator 1173.
7. A method for preparing the aqueous UV-curable elastomeric coating according to any one of claims 1 to 6, comprising the steps of:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the hand feeling elastic filler, the matting powder and the optional photoinitiator into a container, and mixing to obtain a mixture;
(2) and (2) mixing the mixture obtained in the step (1) with a solvent to obtain the aqueous ultraviolet curing elastic coating.
8. The method according to claim 7, wherein the mixing in step (1) is performed by stirring;
preferably, the rotating speed of the stirring is 300-800 rpm;
preferably, the stirring time is 30-60 min.
9. The method according to claim 7 or 8, wherein the mixing in step (2) is performed by stirring;
preferably, the rotating speed of the stirring is 800-1000 rpm;
preferably, the stirring time is 20-40 min.
10. The method according to any one of claims 7 to 9, comprising in particular the steps of:
(1) sequentially adding the waterborne polyurethane acrylate, the functional monomer, the hand feeling elastic filler, the matting powder and the optional photoinitiator into a container at 300-800 rpm, and stirring and mixing for 30-60 min to obtain a mixture;
(2) and (2) stirring the mixture obtained in the step (1) and a solvent for 20-40 min at 800-1000 rpm to obtain the water-based ultraviolet curing elastic coating.
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| CN103555193A (en) * | 2013-11-12 | 2014-02-05 | 江南大学 | Ultraviolet light cured elastic polyurethane acrylate flat lacquer and preparation method thereof |
| CN109666396A (en) * | 2019-01-15 | 2019-04-23 | 张聪聪 | Novel water-based low-gloss ultraviolet curing coating and preparation and use methods thereof |
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|---|---|---|---|---|
| CN103555193A (en) * | 2013-11-12 | 2014-02-05 | 江南大学 | Ultraviolet light cured elastic polyurethane acrylate flat lacquer and preparation method thereof |
| CN109666396A (en) * | 2019-01-15 | 2019-04-23 | 张聪聪 | Novel water-based low-gloss ultraviolet curing coating and preparation and use methods thereof |
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