CN115558389B - Polyurethane-acrylate hand feeling coating and preparation method and application method thereof - Google Patents
Polyurethane-acrylate hand feeling coating and preparation method and application method thereof Download PDFInfo
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- CN115558389B CN115558389B CN202210176996.6A CN202210176996A CN115558389B CN 115558389 B CN115558389 B CN 115558389B CN 202210176996 A CN202210176996 A CN 202210176996A CN 115558389 B CN115558389 B CN 115558389B
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 61
- -1 aldehyde ketone Chemical class 0.000 claims abstract description 60
- 239000004814 polyurethane Substances 0.000 claims abstract description 53
- 229920002635 polyurethane Polymers 0.000 claims abstract description 49
- 239000003822 epoxy resin Substances 0.000 claims abstract description 48
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 48
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 47
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 239000003085 diluting agent Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003086 colorant Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 13
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 13
- 239000013530 defoamer Substances 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 30
- 125000005442 diisocyanate group Chemical group 0.000 claims description 20
- 229920005906 polyester polyol Polymers 0.000 claims description 20
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 claims description 13
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 12
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 11
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 9
- 125000004386 diacrylate group Chemical group 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 230000001804 emulsifying effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004132 cross linking Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 238000001723 curing Methods 0.000 description 10
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 10
- 229920000098 polyolefin Polymers 0.000 description 9
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910002016 Aerosil® 200 Inorganic materials 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 229920001470 polyketone Polymers 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 description 3
- 241000220324 Pyrus Species 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- CJTRGWNHVKRZEB-UHFFFAOYSA-N cyclohexanone;formaldehyde Chemical compound O=C.O=C1CCCCC1 CJTRGWNHVKRZEB-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 230000002195 synergetic effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002075 anti-alcohol Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- IONMUCYQDGALHX-UHFFFAOYSA-N formaldehyde;1-phenylethanone Chemical compound O=C.CC(=O)C1=CC=CC=C1 IONMUCYQDGALHX-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000013508 migration Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 238000004383 yellowing 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/42—Gloss-reducing agents
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a polyurethane-acrylate hand feeling coating (IPC class number: C08G 18/80), in particular to a polyurethane-acrylate hand feeling coating, a preparation method and a use method thereof. The raw materials at least comprise the following components in percentage by weight: 20-25% of aqueous polyurethane, 10-15% of aqueous polyurethane acrylic epoxy resin, 2-4% of aqueous aldehyde ketone resin, 5-10% of reactive diluent, 1-3% of photoinitiator, 0.5-2% of fumed silica, 0.1-0.5% of defoamer, 1-2% of handfeel agent, 3-5% of colorant and the balance of deionized water. The hand feeling paint prepared by the invention has good adhesion with a substrate, has higher modulus and crosslinking degree, is not sticky, has smooth and fine skin-like appearance, has better touch feeling and matte effect, and can prevent dust adsorption.
Description
Technical Field
The invention relates to a polyurethane-acrylate hand feeling coating (IPC class number: C08G 18/80), in particular to a polyurethane-acrylate hand feeling coating, a preparation method and a use method thereof.
Background
Nowadays, with the continuous change of new materials in the printing industry, people prefer printed matters with smooth surface touch velvet, elasticity and softness and matte effect. Printed matter also allows people to experience visual and tactile sensations different from traditional printing effects by using special materials, special processes and special equipment. The water-based ultraviolet light curing coating combines the advantages of the traditional light curing coating and the water-based coating, has the advantages of higher curing rate, lower energy consumption, environmental protection and safety.
Patent application CN201511020225.4 prepares ultraviolet light curing water-based polyurethane acrylate, and the preparation method is simple and easy for industrial production, but the prepared polyurethane acrylate is poor in sense of touch. In addition, the water-based paint has high water content, so that more energy sources are required to be consumed to improve the curing rate, and the energy consumption and the curing time are increased.
Therefore, the hand feeling paint prepared by the invention has good wear resistance, anti-blocking performance and anti-alcohol performance through the synergistic effect of the waterborne polyurethane, the waterborne polyurethane acrylic epoxy resin, the acrylic active monomer and other additives. In addition, the hand feeling paint prepared by the invention has good adhesion fastness with a base material, has higher modulus and crosslinking degree, is not sticky after long-term storage, has smooth and fine touch feeling and matte effect like skin, and can prevent dust adsorption.
Disclosure of Invention
In order to solve the above problems, the first aspect of the present invention provides a polyurethane-acrylate hand-feel coating, which comprises the following raw materials in percentage by weight: 20-25% of aqueous polyurethane, 10-15% of aqueous polyurethane acrylic epoxy resin, 2-4% of aqueous aldehyde ketone resin, 5-10% of reactive diluent, 1-3% of photoinitiator, 0.5-2% of fumed silica, 0.1-0.5% of defoamer, 1-2% of handfeel agent, 3-5% of colorant and the balance of deionized water.
Preferably, the polyurethane-acrylate hand feeling coating comprises the following raw materials in percentage by weight: 22-24% of aqueous polyurethane, 12-13% of aqueous polyurethane acrylic epoxy resin, 2-4% of aqueous aldehyde ketone resin, 5-10% of reactive diluent, 1-3% of photoinitiator, 0.5-2% of fumed silica, 0.1-0.5% of defoamer, 1-2% of handfeel agent, 3-5% of colorant and the balance of deionized water.
Preferably, the aqueous polyurethane has a solids content of 39 to 41% by weight, and is commercially available, e.g. from KorschunPU。
Preferably, the aqueous urethane acrylate is a silicone modified nonionic aqueous urethane acrylate.
Preferably, the aldehyde ketone resin is an acetophenone formaldehyde synthetic polyketone resin, purchased from dyhigh VariPlus SK.
Preferably, the aqueous polyurethane acrylic epoxy resin comprises the following raw materials in parts by weight: 2-3 parts of epoxy resin, 15-20 parts of polyester polyol, 25-30 parts of hydroxypropyl polydimethylsiloxane, 7-10 parts of diisocyanate and 2-4 parts of acrylic ester.
Preferably, the epoxy resin and the hydroxypropyl polydimethylsiloxane are (2-3) in parts by weight: (26-28).
Further preferably, the preparation method of the aqueous polyurethane acrylic epoxy resin comprises the following steps: (1) Adding epoxy resin, polyester polyol and hydroxypropyl polydimethylsiloxane into a reaction kettle, and reacting for 3-5 h at 100-110 ℃; (2) Cooling, slowly dripping diisocyanate into the reaction kettle, heating to 85-90 ℃ after dripping, and reacting for 2-3 h; (3) And (3) adding acrylic ester into the step (2) to react to obtain the aqueous polyurethane acrylic epoxy resin.
Preferably, the epoxy resin is epoxy resin E-44, which is commercially available, for example, from Henan Jin Xuyuan New Material Co.
Preferably, the polyester polyol is PEG400.
Preferably, the diisocyanate is one or more of IPDI (isophorone diisocyanate), HDI (hexamethylene diisocyanate).
Further preferably, the diisocyanate is a mixture of IPDI, HDI.
Further preferably, the diisocyanate is IPDI, and the weight ratio of HDI is 3:1.
preferably, the acrylic ester is one or more of hydroxyethyl acrylate, hydroxypropyl methacrylate and hydroxybutyl acrylate.
Further preferably, the acrylate is hydroxyethyl acrylate.
Preferably, the reactive diluent is one or more of polyester polyol (300) diacrylate, polyester polyol (400) diacrylate, and polyester polyol (600) diacrylate.
Further preferred, the reactive diluent is a polyester polyol (400) diacrylate.
Preferably, the photoinitiator is a mixture of photoinitiator 184 and photoinitiator TPO.
Further preferably, the weight ratio of the photoinitiator 184 to the photoinitiator TPO is (1 to 3): 1.
further preferably, the weight ratio of the photoinitiator 184 to the photoinitiator TPO is 2:1.
preferably, the fumed silica has a specific surface area of 175 to 225m 2 /g; the pH value of the fumed silica is 3.7-4.7; the particle size of the fumed silica is 10-14 nm.
Further preferably, the fumed silica is purchased from Ying-Chun AEROSIL200.
Preferably, the defoamer is a polyether siloxane copolymer, commercially available, such as digao Foamex805.
Preferably, the handfeel agent is a polyolefin wax special treatment body.
Preferably, the polyolefin wax is one or more of polyethylene wax, polypropylene wax and polytetrafluoroethylene wax.
Preferably, the polyolefin wax is a polypropylene wax; after the polyolefin wax is added into the UV coating as a filler, the polyolefin wax is uniformly dispersed in the coating, and the polyolefin wax gradually migrates to the surface of the cured film layer in the physical drying or curing crosslinking process of the coating, so that the smooth feel of the coating is improved.
Preferably, the colorant is carbon BLACK, which is commercially available, such as cabot BLACK PEARLS 470.
The second aspect of the invention provides a method for preparing a polyurethane-acrylate hand feel coating, which mainly comprises the following steps:
(1) Mixing and shearing fumed silica and deionized water, emulsifying and dispersing to obtain pre-dispersed fumed silica for later use;
(2) Stirring the reactive diluent and the photoinitiator at the stirring speed of 500-700 r/min for 22.0-3.0 h to obtain a first mixture;
(3) Mixing and stirring the aqueous polyurethane, the aqueous polyurethane acrylic epoxy resin and the aqueous aldehyde ketone resin, adding the mixture into the first mixture in the step (2) after uniformly stirring, continuously uniformly stirring, adding the pre-dispersed fumed silica, the defoaming agent, the handfeel agent and the coloring agent in the step (1), and dispersing for 50-60 min at the stirring speed of 300-400 r/min to obtain a second mixture;
(4) And (3) filtering the second mixture in the step (3) through a 200-mesh filter bag to obtain the hand feeling coating.
The third aspect provided by the invention provides a use method of a polyurethane-acrylate hand feeling coating, which comprises the following steps: the polyurethane-acrylate hand coating is applied over a substrate in two layers, including a base coat and a top coat.
The paint of the surface coating is the hand feeling paint prepared by the application document.
The primer layer is different in the amount of fumed silica added.
Preferably, the fumed silica is added in an amount of 0.5 to 2 parts.
Preferably, the thickness of the primer layer is 7 to 9 μm.
Preferably, the thickness of the topcoat is 13 to 15 μm.
The beneficial effects are that:
1. in the application document, by adjusting the silicon dioxide content of the polyurethane-acrylic ester hand feeling coating, the coating has a matte visual feeling, and good flexibility and tensile strength of the product coating are ensured. Due to the presence of low density nanoparticles in the coating system, migration to the surface during drying and curing increases the microroughness of the coating surface, thereby producing a matte effect and a tactile sensation.
2. In this specification, by defining the photoinitiator 184, the weight ratio of the photoinitiator TPO is (1 to 3): 1, the yellowing resistance of the hand feeling coating is effectively improved, the dependence on light intensity is reduced, and the deep curing speed of the product is effectively improved.
3. In the application document, the viscosity of the coating can be regulated by limiting the synergistic effect of the aqueous polyurethane with the solid content of 39-41 wt% and the polyethylene glycol (400) diacrylate, so that the conditions of uneven coating thickness and unsmooth hand feeling caused by the fact that the coating is difficult to spray due to overhigh viscosity are prevented.
4. In the application, the crosslinking density and the curing degree of the hand-feeling coating are effectively improved by adopting the synergistic effect of photo-curing and thermal curing, and the mechanical wear resistance, alcohol resistance and anti-bonding property of the hand-feeling coating are improved.
5. In the present specification, the specific surface area of fumed silica is defined to be 175 to 225m 2 And/g, the pH value is 3.7-4.7, and the particle size is 10-14 nm, so that the coating has smooth skin feel, and the wear resistance and scratch resistance of the product are further improved.
6. In the application document, the prepared hand feeling paint has good adhesion fastness with a base material by adopting the preparation process of the base coat and the top coat, has higher modulus and crosslinking density, is not sticky at high temperature, has better touch feeling and matte effect, and can prevent dust adsorption.
Detailed Description
Examples
Example 1
The embodiment 1 of the invention provides a polyurethane-acrylate hand feeling coating, which comprises the following raw materials in percentage by weight: 25% of aqueous polyurethane, 15% of aqueous polyurethane acrylic epoxy resin, 4% of aqueous aldehyde ketone resin, 10% of reactive diluent, 2% of photoinitiator, 1% of fumed silica, 0.4% of defoamer, 2% of handfeel agent, 3% of colorant and the balance of deionized water.
The aqueous polyurethane in this example had a solids content of 40% by weight and was purchased from KorschmentPU。
In the embodiment, the aqueous polyurethane acrylic epoxy resin comprises the following raw materials in parts by weight: 2.5 parts of epoxy resin, 15 parts of polyester polyol, 30 parts of hydroxypropyl polydimethylsiloxane, 7 parts of diisocyanate and 3 parts of acrylic ester.
The preparation method of the aqueous polyurethane acrylic epoxy resin in the embodiment comprises the following steps: (1) Adding epoxy resin, polyester polyol and hydroxypropyl polydimethylsiloxane into a reaction kettle, and reacting for 4 hours at 105 ℃; (2) Cooling to 60 ℃, slowly dripping diisocyanate into the reaction kettle, heating to 85 ℃ after dripping, and reacting for 2 hours; (3) And (3) adding acrylic ester into the step (2) to react for 2 hours to obtain the aqueous polyurethane acrylic epoxy resin.
The epoxy resin in this example is epoxy resin E-44, purchased from Jinan Jin Xuyuan New Material Co., ltd; the polyester polyol is PEG600; the diisocyanate is a mixture of IPDI and HDI; the diisocyanate is IPDI, and the weight ratio of HDI is 5:2. the acrylic ester is hydroxyethyl acrylate.
The aqueous aldehyde ketone resin in this example was a cyclohexanone-formaldehyde synthetic polyketone resin purchased from winning TEGO Variliplus SK.
The reactive diluent in this example was a polyester polyol (400) diacrylate, purchased from carbohydrate technologies, inc. of Guangzhou.
The photoinitiator in this example is a mixture of photoinitiator 184, tpo; the weight ratio of the photoinitiator 184 to TPO is 2:1.
the fumed silica in this example has a specific surface area of 200m 2 /g; the pH of the fumed silica is 4.0; the particle size of the fumed silica is 12nm. Fumed silica in this example was purchased from Ying-Chun AEROSIL200.
The defoamer in this example was a polyether siloxane copolymer, purchased from digao Foamex805.
The colorant in this embodiment is carbon BLACK, purchased from cabot BLACK pears 470.
The polyolefin wax in this example is a polypropylene wax.
The second aspect of the present embodiment provides a method for preparing a polyurethane-acrylate hand feel coating, comprising the steps of:
(1) Mixing and shearing fumed silica and deionized water, emulsifying and dispersing to obtain pre-dispersed fumed silica for later use;
(2) Stirring the reactive diluent and the photoinitiator at a stirring speed of 600r/min for 2.5 hours to obtain a first mixture;
(3) Mixing and stirring the aqueous polyurethane, the aqueous polyurethane acrylic epoxy resin and the aqueous aldehyde ketone resin, adding the mixture into the first mixture in the step (2) after uniformly stirring, continuously uniformly stirring, adding the pre-dispersed fumed silica, the defoaming agent, the handfeel agent and the coloring agent in the step (1), and dispersing for 55min at the stirring speed of 350r/min to obtain a second mixture;
(4) And (3) filtering the second mixture in the step (3) through a 200-mesh filter bag to obtain the hand feeling coating.
The third aspect provided by the present embodiment provides a method for using a polyurethane-acrylate hand feel coating: the polyurethane-acrylate hand feel paint is sprayed on an ABS plastic plate (148 mm multiplied by 210 mm) to be coated with two layers, including a bottom coating and a top coating. The topcoat was the hand coating prepared in example 1.
The primer layer is different in the amount of silica added. The addition amount of the silica was 0.5 part. The thickness of the primer layer was 8 μm. The thickness of the topcoat was 14 μm.
Example 2
The embodiment 2 of the invention provides a polyurethane-acrylate hand feeling coating, which comprises the following raw materials in percentage by weight: 20% of waterborne polyurethane, 15% of waterborne polyurethane acrylic epoxy resin, 4% of waterborne aldehyde ketone resin, 10% of reactive diluent, 2% of photoinitiator, 1% of fumed silica, 0.4% of defoamer, 2% of handfeel agent, 3% of colorant and the balance of deionized water.
The aqueous polyurethane in this example had a solids content of 40% by weight and was purchased from KorschmentPU。
In the embodiment, the aqueous polyurethane acrylic epoxy resin comprises the following raw materials in parts by weight: the raw materials comprise: 2.5 parts of epoxy resin, 15 parts of polyester polyol, 30 parts of hydroxypropyl polydimethylsiloxane, 7 parts of diisocyanate and 3 parts of acrylic ester.
The preparation method of the aqueous polyurethane acrylic epoxy resin in the embodiment comprises the following steps: (1) Adding epoxy resin, polyester polyol and hydroxypropyl polydimethylsiloxane into a reaction kettle, and reacting for 4 hours at 105 ℃; (2) Cooling to 60 ℃, slowly dripping diisocyanate into the reaction kettle, heating to 85 ℃ after dripping, and reacting for 2 hours; (3) And (3) adding acrylic ester into the step (2) to react for 2 hours to obtain the aqueous polyurethane acrylic epoxy resin.
The epoxy resin in this example is epoxy resin E-44, purchased from Jinan Jin Xuyuan New Material Co., ltd; the polyester polyol is PEG600; the diisocyanate is a mixture of IPDI and HDI; the diisocyanate is IPDI, and the weight ratio of HDI is 5:2. the acrylic ester is hydroxyethyl acrylate.
The aqueous aldehyde ketone resin in this example was a cyclohexanone-formaldehyde synthetic polyketone resin purchased from winning TEGO Variliplus SK.
The reactive diluent in this example was a polyester polyol (400) diacrylate, purchased from carbohydrate technologies, inc. of Guangzhou.
The photoinitiator in this example is a mixture of photoinitiator 184, tpo; the weight ratio of the photoinitiator 184 to TPO is 2:1.
the fumed silica in this example has a specific surface area of 200m 2 /g; the pH of the fumed silica is 4.0; the particle size of the fumed silica is 12nm. Fumed silica in this example was purchased from Ying-Chun AEROSIL200.
The defoamer in this example was a polyether siloxane copolymer, purchased from digao Foamex805.
The colorant in this embodiment is carbon BLACK, purchased from cabot BLACK pears 470.
The polyolefin wax in this example is a polypropylene wax.
The second aspect of the present embodiment provides a method for preparing a polyurethane-acrylate hand feel coating, comprising the steps of:
(1) Mixing and shearing fumed silica and deionized water, emulsifying and dispersing to obtain pre-dispersed fumed silica for later use;
(2) Stirring the reactive diluent and the photoinitiator at a stirring speed of 600r/min for 2.5 hours to obtain a first mixture;
(3) Mixing and stirring the aqueous polyurethane, the aqueous polyurethane acrylic epoxy resin and the aqueous aldehyde ketone resin, adding the mixture into the first mixture in the step (2) after uniformly stirring, continuously uniformly stirring, adding the pre-dispersed fumed silica, the defoaming agent, the handfeel agent and the coloring agent in the step (1), and dispersing for 55min at the stirring speed of 350r/min to obtain a second mixture;
(4) And (3) filtering the second mixture in the step (3) through a 200-mesh filter bag to obtain the hand feeling coating.
The third aspect provided by the present embodiment provides a method for using a polyurethane-acrylate hand feel coating: the polyurethane-acrylate hand feel paint is sprayed on an ABS plastic plate (148 mm multiplied by 210 mm) to be coated with two layers, including a bottom coating and a top coating. The topcoat was the hand coating prepared in example 1.
The primer layer is different in the amount of silica added. The addition amount of the silica was 0.5 part. The thickness of the primer layer was 8 μm. The thickness of the topcoat was 14 μm.
Example 3
The embodiment 3 of the invention provides a polyurethane-acrylate hand feeling coating, which comprises the following raw materials in percentage by weight: 20% of waterborne polyurethane, 10% of waterborne polyurethane acrylic epoxy resin, 2% of waterborne aldehyde ketone resin, 10% of reactive diluent, 2% of photoinitiator, 1% of fumed silica, 0.4% of defoamer, 2% of handfeel agent, 3% of colorant and the balance of deionized water.
The aqueous polyurethane in this example had a solids content of 40% by weight and was purchased from KorschmentPU。
In the embodiment, the aqueous polyurethane acrylic epoxy resin comprises the following raw materials in parts by weight: 2.5 parts of epoxy resin, 15 parts of polyester polyol, 30 parts of hydroxypropyl polydimethylsiloxane, 7 parts of diisocyanate and 3 parts of acrylic ester.
The preparation method of the aqueous polyurethane acrylic epoxy resin in the embodiment comprises the following steps: (1) Adding epoxy resin, polyester polyol and hydroxypropyl polydimethylsiloxane into a reaction kettle, and reacting for 4 hours at 105 ℃; (2) Cooling to 60 ℃, slowly dripping diisocyanate into the reaction kettle, heating to 85 ℃ after dripping, and reacting for 2 hours; (3) And (3) adding acrylic ester into the step (2) to react for 2 hours to obtain the aqueous polyurethane acrylic epoxy resin.
The epoxy resin in this example is epoxy resin E-44, purchased from Jinan Jin Xuyuan New Material Co., ltd; the polyester polyol is PEG600; the diisocyanate is a mixture of IPDI and HDI; the diisocyanate is IPDI, and the weight ratio of HDI is 5:2. the acrylic ester is hydroxyethyl acrylate.
The aqueous aldehyde ketone resin in this example was a cyclohexanone-formaldehyde synthetic polyketone resin purchased from winning TEGO Variliplus SK.
The reactive diluent in this example was a polyester polyol (400) diacrylate, purchased from carbohydrate technologies, inc. of Guangzhou.
The photoinitiator in this example is a mixture of photoinitiator 184, tpo; the weight ratio of the photoinitiator 184 to TPO is 2:1.
the fumed silica in this example has a specific surface area of 200m 2 /g; the pH of the fumed silica is 4.0; the particle size of the fumed silica is 12nm. Fumed silica in this example was purchased from Ying-Chun AEROSIL200.
The defoamer in this example was a polyether siloxane copolymer, purchased from digao Foamex805.
The colorant in this embodiment is carbon BLACK, purchased from cabot BLACK pears 470.
The polyolefin wax in this example is a polypropylene wax.
The second aspect of the present embodiment provides a method for preparing a polyurethane-acrylate hand feel coating, comprising the steps of:
(1) Mixing and shearing fumed silica and deionized water, emulsifying and dispersing to obtain pre-dispersed fumed silica for later use;
(2) Stirring the reactive diluent and the photoinitiator at a stirring speed of 600r/min for 2.5 hours to obtain a first mixture;
(3) Mixing and stirring the aqueous polyurethane, the aqueous polyurethane acrylic epoxy resin and the aqueous aldehyde ketone resin, adding the mixture into the first mixture in the step (2) after uniformly stirring, continuously uniformly stirring, adding the pre-dispersed fumed silica, the defoaming agent, the handfeel agent and the coloring agent in the step (1), and dispersing for 55min at the stirring speed of 350r/min to obtain a second mixture;
(4) And (3) filtering the second mixture in the step (3) through a 200-mesh filter bag to obtain the hand feeling coating.
A third aspect of the present embodiment provides a method for using a polyurethane-acrylate feel coating: the polyurethane-acrylate hand coating was applied to an ABS panel (148 mm x 210 mm) in two layers, one after the other, including a primer layer and a topcoat layer. The topcoat was the hand coating prepared in example 2. The primer layer is different in the amount of fumed silica added. The addition amount of the fumed silica was 0.5 part. The thickness of the primer layer was 8 μm. The thickness of the topcoat was 14 μm.
Comparative example 1
The embodiment of comparative example 1 is the same as example 1; except that the photoinitiator described in comparative example 1 was photoinitiator 184.
Comparative example 2
The embodiment of comparative example 2 is the same as example 1; in contrast, no aldehyde ketone resin was added in comparative example 2.
Comparative example 3
The embodiment of comparative example 3 is the same as example 1; the difference is that the addition amount of hydroxypropyl polydimethylsiloxane in the preparation raw material of the aqueous urethane acrylic epoxy resin in comparative example 3 was 12.5 parts.
Performance test:
test examples
(1) Gloss level: the gloss of the articles was tested according to standard GB/T9754-2007 using a general purpose photometer (angle of incidence 60 ℃).
(2) Adhesion force: the test was carried out in accordance with GB/T9286-1998.
(3) Alcohol resistance: alcohol was applied to the cotton cloth and rubbed on the coating with a force of 1kg for several times until the coating was observed to be rubbed off and the coating of the product was destroyed, the number of rubs being recorded in Table 1.
Performance test results:
table 1 shows the results of performance tests of the hand feel coatings prepared in examples 1 to 3 and comparative examples 1 to 3.
TABLE 1 Performance test results
Claims (6)
1. The polyurethane-acrylic ester hand feeling paint for ABS plastic is characterized in that the paint comprises the following raw materials in percentage by weight: 20-25% of waterborne polyurethane, 10-15% of waterborne polyurethane acrylic epoxy resin, 2-4% of waterborne aldehyde ketone resin, 5-10% of reactive diluent, 1-3% of photoinitiator, 0.5-2% of fumed silica, 0.1-0.5% of defoamer, 1-2% of handfeel agent, 3-5% of colorant and the balance of deionized water;
the solid content of the aqueous polyurethane is 39-41%wt;
the specific surface area of the fumed silica is 175-225 m 2 /g; the pH value of the fumed silica is 3.7-4.7; the particle size of the fumed silica is 10-14 nm;
the photoinitiator is a mixture of a photoinitiator 184 and a photoinitiator TPO, and the weight ratio of the photoinitiator 184 to the photoinitiator TPO is (1-3): 1, a step of;
the waterborne polyurethane acrylic epoxy resin comprises the following raw materials in parts by weight: 2-3 parts of epoxy resin, 15-20 parts of polyester polyol, 25-30 parts of hydroxypropyl polydimethylsiloxane, 7-10 parts of diisocyanate and 2-4 parts of acrylic ester;
the epoxy resin is epoxy resin E-44;
the reactive diluent is polyethylene glycol diacrylate with a molecular weight of 400, purchased from Guangzhou water science and technology Co.
2. The polyurethane-acrylate hand feel coating for ABS plastics according to claim 1, wherein the raw materials comprise, in weight percent: 22-24% of waterborne polyurethane, 12-13% of waterborne polyurethane acrylic epoxy resin, 2-4% of waterborne aldehyde ketone resin, 5-10% of reactive diluent, 1-3% of photoinitiator, 0.5-2% of fumed silica, 0.1-0.5% of defoamer, 1-2% of handfeel agent, 3-5% of colorant and the balance of deionized water.
3. The polyurethane-acrylate hand feel coating for ABS plastics according to claim 1, wherein the diisocyanate is one or more of IPDI, HDI.
4. A polyurethane-acrylate hand coating for ABS plastics according to claim 3 wherein the diisocyanate is a mixture of IPDI, HDI.
5. A process for preparing a polyurethane-acrylate hand coating for ABS plastics according to claims 1-4, characterized in that the steps comprise:
(1) Mixing and shearing fumed silica and deionized water, emulsifying and dispersing to obtain pre-dispersed fumed silica for later use;
(2) Stirring the reactive diluent and the photoinitiator at a stirring speed of 500-700 r/min for 2.0-3.0 h to obtain a first mixture;
(3) Mixing and stirring aqueous polyurethane, aqueous polyurethane acrylic epoxy resin and aqueous aldehyde ketone resin, adding the mixture into the first mixture in the step (2) after uniformly stirring, continuously uniformly stirring, adding the pre-dispersed fumed silica, the defoaming agent, the handfeel agent and the coloring agent in the step (1), and dispersing for 50-60 min at the stirring speed of 300-400 r/min to obtain a second mixture;
(4) And (3) filtering the second mixture in the step (3) through a 200-mesh filter bag to obtain the hand feeling coating.
6. A method of using a polyurethane-acrylate hand coating for ABS plastic according to any one of claims 1-4 wherein the hand coating is applied to a substrate in two layers, including a primer layer and a topcoat layer.
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