CN115558402A - UV (ultraviolet) photocureable coating for metal printing and preparation process thereof - Google Patents
UV (ultraviolet) photocureable coating for metal printing and preparation process thereof Download PDFInfo
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- CN115558402A CN115558402A CN202210135858.3A CN202210135858A CN115558402A CN 115558402 A CN115558402 A CN 115558402A CN 202210135858 A CN202210135858 A CN 202210135858A CN 115558402 A CN115558402 A CN 115558402A
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- 238000000576 coating method Methods 0.000 title claims abstract description 56
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 238000007639 printing Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000002184 metal Substances 0.000 title abstract description 9
- 229910052751 metal Inorganic materials 0.000 title abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 43
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 34
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 229920005989 resin Polymers 0.000 claims description 25
- 239000000178 monomer Substances 0.000 claims description 24
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 17
- 239000004925 Acrylic resin Substances 0.000 claims description 16
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 16
- 150000001412 amines Chemical class 0.000 claims description 15
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 claims description 14
- 230000003678 scratch resistant effect Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 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 6
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 239000005028 tinplate Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000000016 photochemical curing Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 10
- 229920002635 polyurethane Polymers 0.000 description 8
- 239000004814 polyurethane Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 ethylene propylene, ethylene tetrafluoroethylene Chemical class 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009736 wetting 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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to a coating (IPC classification number: C09D 163/10), in particular to a UV photocureable coating for metal printing and a preparation process thereof. The invention relates to a coating (IPC classification number: C09D 163/10), in particular to a UV photocureable coating for metal printing and a preparation process thereof. The UV photocureable coating for tin printing prepared by the invention can realize the film forming efficiency of 20-23 s, and the coating after film forming has excellent high hardness, high glossiness, excellent adhesion, good ink protection characteristic, controllable smoothness and friction resistance, low odor or no odor, and good machining performance.
Description
Technical Field
The invention relates to a coating (IPC classification number: C09D 163/10), in particular to a UV photocureable coating for metal printing and a preparation process thereof.
Background
Metallic materials, especially ferrous materials, play an important role in economic life. The performance requirements of steel materials, which are commonly used in the packaging industry, for coatings are also increasing. At present, most of the metal anticorrosion baking paints used in factories are solvent-based products, and even water-based coatings contain partial solvents, so that environmental pollution can be caused in the construction process. With the development of market economy, the field of coatings has changed greatly, wherein ultraviolet light curing coatings (UV coatings for short) have the advantages of high curing speed, energy conservation, normal temperature curing, excellent performance, environmental protection and the like, and are widely concerned in the industry. In addition, most of the existing water-based coatings consume more energy to improve the curing rate and increase the energy consumption and time because the water in the system is too much and is difficult to volatilize.
One of the key problems in the design of UV photocurable coating formulations is how to improve the adhesion between the coating film and various substrates, especially the adhesion to metal substrates is difficult. This is because: on one hand, the photocureable coating has high curing speed, and the volume shrinkage is too large when the acrylate monomers are polymerized, so that the internal stress generated by a paint film during curing cannot be released in time; on the other hand, the formation of the physical and chemical action between the metal substrate and the coating is difficult, and the formation is easy without a non-metal substrate.
The patent application CN201511020225.4 prepares an ultraviolet curing water-based polyurethane acrylate, the preparation method is simple, the industrial production is easy, but the prepared polyurethane acrylate is not satisfactory in touch sense.
The UV photocureable coating for tin printing prepared by the invention can realize the film forming efficiency of 20-23 s, and the coating after film forming has excellent high hardness, high glossiness, excellent adhesion, good ink protection characteristic, controllable smoothness and friction resistance, low odor or no odor, and good machining performance.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a tin printing UV-curable coating, which comprises the following raw materials by weight: 55-65 parts of UV resin, 5-10 parts of active amine, 20-30 parts of acrylate monomer containing hydroxyl, 4-7 parts of photoinitiator, 0.1-0.5 part of flatting agent and 3-5 parts of scratch-resistant agent.
As a preferable scheme, the tin printing UV light-cured coating at least comprises the following raw materials in parts by weight: 57-62 parts of UV resin, 6-9 parts of active amine, 22-28 parts of acrylate monomer containing hydroxyl, 4-7 parts of photoinitiator, 0.1-0.5 part of flatting agent and 3-5 parts of scratch-resistant agent.
In a preferred embodiment, the UV resin is one or more of urethane acrylate, polyester acrylate, and epoxy acrylate.
In a preferred embodiment, the UV resin is a mixture of urethane acrylate and epoxy acrylate resin.
In a preferable scheme, the weight ratio of the urethane acrylate to the epoxy acrylate resin is (30-35) to (25-30).
As a preferred embodiment, the epoxy acrylate resin is bisphenol a epoxy acrylate.
In a preferred embodiment, the urethane acrylate is an aliphatic urethane acrylate.
As a preferable scheme, the functionality of the bisphenol A epoxy acrylate is more than or equal to 2, and the refractive index of the bisphenol A epoxy acrylate is 1.5-1.6.
As a preferred embodiment, the bisphenol A epoxy acrylate is commercially available, for example, as B-113 from Jinningbai chemical Co.
As a preferred embodiment, the aliphatic urethane acrylate is purchased from KA119-5 of Guangdong Shunji paint Co.
In a preferred embodiment, the hydroxyl-containing acrylate monomer is one or more of tripropylene glycol diacrylate, propoxylated neopentyl glycol diacrylate and trimethylolpropane triacrylate.
In a preferred embodiment, the hydroxyl group-containing acrylate monomer is tripropylene glycol diacrylate.
In a preferred embodiment, the weight ratio of the hydroxyl-containing acrylate monomer to the UV resin is (2.3 to 2.5): 1.
in experiments, the applicant found that acrylates containing hydroxyl groups adhere more easily to substrates than acrylates containing no hydroxyl groups, and that when UV resins, the weight ratio of the acrylate monomers containing hydroxyl groups is (2.3 to 2.5): 1, the adhesive force of the coating is better.
In a preferred embodiment, the photoinitiator is a mixture of photoinitiator 184 and photoinitiator TPO.
In a preferred embodiment, the weight ratio of the photoinitiator 184 to the photoinitiator TPO is (1 to 3): 1.
the applicant found that when the photoinitiator 184, the weight ratio of the photoinitiator TPO is (1 to 3): 1, in the spectral range of a UV light source, the material has high light absorption efficiency and high radical quantum yield, and simultaneously has good solubility and weather resistance in the UV resin in the system, and does not have yellowing after long-term storage.
As a preferable scheme, the flatting agent is one or more of a modified organic silicon flatting agent and an acrylic flatting agent,
as a preferred embodiment, the leveling agent is a modified silicone leveling agent, which is commercially available, such as Dow Corning DC-57.
In a preferred embodiment, the scratch resistant agent is one or more of polyvinylidene fluoride, fluorinated ethylene propylene, ethylene tetrafluoroethylene copolymer and polyvinylidene fluoride-hexafluoropropylene copolymer.
As a preferred embodiment, the scratch resistant agent is polyvinylidene fluoride-hexafluoropropylene copolymer, which is commercially available, such as Hua Xiangke clean biotechnology, inc. of Wuhan.
The invention provides a preparation process of a tin printing UV photocureable coating, which mainly comprises the following steps:
(1) Mixing and stirring the UV resin uniformly, and dispersing uniformly;
(2) Then adding hydroxyl-containing acrylate monomers, flatting agents and scraping-resistant agents into the step (1), and uniformly dispersing;
(3) Finally, adding the photoinitiator and the active amine, and uniformly stirring.
Has the advantages that:
1. according to the invention, when the weight ratio of the urethane acrylate to the epoxy acrylate resin is limited to (30-35) to (25-30), the abrasion resistance and the adhesive force of the product are improved, and the alcohol resistance of the coating is also improved.
2. The invention limits the UV resin, and the weight ratio of the acrylate monomer containing hydroxyl is (2.3-2.5): 1, the product flexibility is improved, and the penetration and wetting capacity of the coating to steel is improved, so that the adhesive force of the coating is improved.
3. The invention limits the photoinitiator 184, and the weight ratio of the photoinitiator TPO is (1-3): 1, the curing rate of the coating is improved, and the coating has good solubility and weather resistance in a system of urethane acrylate and epoxy acrylate resin, and does not yellow after being stored for a long time.
4. The invention limits the functionality of bisphenol A epoxy acrylate to be more than or equal to 2 and the refractive index to be 1.5-1.6, thereby improving the toughness of the coating and simultaneously improving the glossiness of the product.
5. The UV photocureable coating for tin printing prepared by the invention can realize the film forming efficiency of 20-23 s, and the coating after film forming has excellent high hardness, high glossiness, excellent adhesion, good ink protection characteristic, controllable smoothness and friction resistance, low odor or no odor, and good machining performance.
Detailed Description
Examples
Example 1
The embodiment 1 of the invention provides a tin printing UV photocureable coating which comprises the following raw materials in parts by weight: 60 parts of UV resin, 8 parts of active amine, 25 parts of acrylate monomer containing hydroxyl, 5 parts of photoinitiator, 0.3 part of flatting agent and 4 parts of scratch resistant agent.
The UV resin is a mixture of polyurethane acrylate and epoxy acrylate resin. The weight ratio of the polyurethane acrylate to the epoxy acrylate resin is 32:27.
the epoxy acrylate resin is bisphenol A epoxy acrylate, purchased from B-113 of Kunning Bai chemical Co. The urethane acrylate is an aliphatic urethane acrylate purchased from KA119-5, guangdong shunhao coatings limited.
The activated amine was purchased from P115 of Wuhan Hua Xiangke Jie Biotechnology, inc.
The acrylate monomer containing hydroxyl is tripropylene glycol diacrylate and is purchased from new material company of Jinquanxing province.
The photoinitiator is a mixture of photoinitiator 184 and photoinitiator TPO. The weight ratio of the photoinitiator 184 to the photoinitiator TPO is 2:1.
the photoinitiator 184 was purchased from Nanjing Walihua chemical technology.
The photoinitiator TPO was purchased from mikland chemical co.
The leveling agent is a modified organic silicon leveling agent and is purchased from Dow Corning DC-57.
The scratch-resistant agent is polyvinylidene fluoride-hexafluoropropylene copolymer purchased from Wuhan Hua Xiangke clean biotechnology, inc.
The embodiment provides a preparation method of a tin printing UV photocureable coating, which comprises the following steps:
(1) Mixing and stirring the UV resin uniformly, and dispersing uniformly;
(2) Then adding hydroxyl-containing acrylate monomers, flatting agents and scraping-resistant agents into the step (1) respectively, and dispersing uniformly;
(3) Finally, adding the photoinitiator and the active amine, and uniformly stirring.
Example 2
The embodiment 2 of the invention provides a tin printing UV photocureable coating which comprises the following raw materials in parts by weight: 65 parts of UV resin, 10 parts of active amine, 30 parts of acrylate monomer containing hydroxyl, 7 parts of photoinitiator, 0.5 part of flatting agent and 5 parts of scratch-resistant agent.
The UV resin is a mixture of polyurethane acrylate and epoxy acrylate resin. The weight ratio of the polyurethane acrylate to the epoxy acrylate resin is 32:27.
the epoxy acrylate resin is bisphenol A epoxy acrylate, purchased from B-113 of Kunning Bai chemical Co. The urethane acrylate is an aliphatic urethane acrylate purchased from KA119-5, guangdong shunhao coatings limited.
The activated amine was purchased from P115, wuhan Hua Xiangke jie biotechnology limited.
The acrylate monomer containing hydroxyl is tripropylene glycol diacrylate and is purchased from new material company of Jinquanxing province.
The photoinitiator is a mixture of photoinitiator 184 and photoinitiator TPO. The weight ratio of the photoinitiator 184 to the photoinitiator TPO is 2:1.
the photoinitiator 184 was purchased from Nanjing Wawa Riwa chemical technology.
The photoinitiator TPO was purchased from mikland chemical co.
The leveling agent is a modified organic silicon leveling agent and is purchased from Dow Corning DC-57.
The scratch-resistant agent is polyvinylidene fluoride-hexafluoropropylene copolymer purchased from Wuhan Hua Xiangke clean biotechnology, inc.
The embodiment provides a preparation method of a tin printing UV photocureable coating, which comprises the following steps:
(1) Mixing and stirring the UV resin uniformly, and dispersing uniformly;
(2) Then adding hydroxyl-containing acrylate monomers, flatting agents and scraping-resistant agents into the step (1), and uniformly dispersing;
(3) Finally, adding the photoinitiator and the active amine, and uniformly stirring.
Example 3
The embodiment 3 of the invention provides a tin printing UV photocureable coating which comprises the following raw materials in parts by weight: 55 parts of UV resin, 5 parts of active amine, 20 parts of acrylate monomer containing hydroxyl, 4 parts of photoinitiator, 0.1 part of flatting agent and 3 parts of scratch resistant agent.
The UV resin is a mixture of polyurethane acrylate and epoxy acrylate resin. The weight ratio of the polyurethane acrylate to the epoxy acrylate resin is 32:27.
the epoxy acrylate resin is bisphenol A epoxy acrylate, purchased from B-113 of Kunning Bai chemical Co. The urethane acrylate is an aliphatic urethane acrylate purchased from KA119-5, guangdong shunhao coatings limited.
The activated amine was purchased from P115 of Wuhan Hua Xiangke Jie Biotechnology, inc.
The acrylate monomer containing hydroxyl is tripropylene glycol diacrylate and is purchased from new material company of Jinquanxing province.
The photoinitiator is a mixture of photoinitiator 184 and photoinitiator TPO. The weight ratio of the photoinitiator 184 to the photoinitiator TPO is 2:1.
the photoinitiator 184 was purchased from Nanjing Walihua chemical technology.
The photoinitiator TPO was purchased from mikland chemical co.
The leveling agent is a modified organic silicon leveling agent and is purchased from Dow Corning DC-57.
The scratch-resistant agent is polyvinylidene fluoride-hexafluoropropylene copolymer purchased from Wuhan Hua Xiangke clean biotechnology, inc.
The embodiment provides a preparation method of a tin printing UV photocureable coating, which comprises the following steps:
(1) Mixing and stirring the UV resin uniformly, and dispersing uniformly;
(2) Then adding hydroxyl-containing acrylate monomers, flatting agents and scraping-resistant agents into the step (1), and uniformly dispersing;
(3) And finally, adding a photoinitiator and active amine, and uniformly stirring to obtain the tin printing photocureable coating.
Comparative example 1
The embodiment of comparative example 1 is the same as example 1; except that the UV resin described in comparative example 1 was an epoxy acrylate resin.
Comparative example 2
Comparative example 2 the same embodiment as in example 1; except that the hydroxyl group-containing acrylate monomer described in comparative example 2 was trimethylolpropane triacrylate.
And (3) performance testing:
the dope obtained in examples 1-3 and comparative examples 1-2 was diluted with n-butanol to a solid content of 40% and then uniformly applied to a ferrous article (148 mm. Times.210 mm) with a 14 μm coater to a coating thickness of 22 μm. Curing and drying the metal product by ultraviolet irradiation at 60 ℃ for 20s (the UV energy is 700 mJ/cm) 2 )，Successfully coated ferrous articles were obtained and the following performance tests were performed:
(1) Gloss: the gloss of the iron articles was tested according to the standard GB/T9754-2007 using a general photometer (angle of incidence 60 ℃).
(2) Adhesion force: adhesion force: the test was carried out according to GB/T9286-1998.
(3) Alcohol resistance: dipping alcohol on the degreased cotton cloth, wiping the degreased cotton cloth on the coating layer repeatedly with 1kg of force until the coating on the degreased cotton cloth is wiped out, wherein the number of wiping is A when the number of wiping is more than 55, B when the number of wiping is 50-55 and C when the number of wiping is less than 50.
(4) Impact resistance: and (5) carrying out a positive impact test of 50cm/N on the sample, and observing whether the sample is intact.
And (3) performance test results:
table 1 shows the results of the performance tests of the UV-curable coatings of tinplate prepared in examples 1 to 3 and comparative examples 1 to 3.
TABLE 1
| Degree of gloss | Adhesion force | Resisting alcohol/time | Impact resistance | |
| Example 1 | 99 | 0 | A | Without cracks |
| Example 2 | 98 | 0 | A | Without cracks |
| Example 3 | 98 | 0 | A | Without cracks |
| Comparative example 1 | 102 | 1 | A | Slight cracking |
| Comparative example 2 | 92 | 2 | A | Slight cracking |
Claims (10)
1. The UV photocuring tin printing coating is characterized by comprising the following raw materials in parts by weight: 55-65 parts of UV resin, 5-10 parts of active amine, 20-30 parts of acrylate monomer containing hydroxyl, 4-7 parts of photoinitiator, 0.1-0.5 part of flatting agent and 3-5 parts of scratch-resistant agent.
2. The tin printing UV photocureable coating according to claim 1, characterized in that the raw materials comprise, in parts by weight: 57-62 parts of UV resin, 6-9 parts of active amine, 22-28 parts of acrylate monomer containing hydroxyl, 4-7 parts of photoinitiator, 0.1-0.5 part of flatting agent and 3-5 parts of scratch-resistant agent.
3. A tinplate UV light-cured coating according to any one of claims 1-2, characterized in that the UV resin is one or more of urethane acrylate, polyester acrylate, epoxy acrylate resins.
4. The tinplate UV photocurable coating of claim 3 wherein said epoxy acrylate resin is bisphenol A epoxy acrylate.
5. The tinplate UV light-cured coating of claim 3, wherein said urethane acrylate is an aliphatic urethane acrylate.
6. The tin printing UV curable coating according to any one of claims 1 to 2, wherein the hydroxyl group-containing acrylate monomer is one or more of tripropylene glycol diacrylate, propoxylated neopentyl glycol diacrylate and trimethylolpropane triacrylate.
7. The tin printing UV-curable coating according to any one of claims 1 to 2, wherein the weight ratio of the UV resin to the hydroxyl group-containing acrylate monomer is (2.3-2.5): 1.
8. a tinplate UV light-cured coating according to any one of claims 1-2, characterized in that the photoinitiator is a mixture of photoinitiator 184, photoinitiator TPO.
9. The tin printing UV curable coating according to any one of claims 1 to 2, wherein the leveling agent is one or more of a modified silicone leveling agent and an acrylic leveling agent.
10. A method of preparing a tinplate UV light cured coating according to any one of claims 1-9, comprising the steps of:
(1) Mixing and stirring the UV resin uniformly, and dispersing uniformly;
(2) Then adding hydroxyl-containing acrylate monomers, flatting agents and scraping-resistant agents into the step (1), and uniformly dispersing;
(3) Finally, adding the photoinitiator and the active amine, and stirring uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210135858.3A CN115558402B (en) | 2022-02-15 | 2022-02-15 | UV (ultraviolet) photocuring coating for tin printing and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210135858.3A CN115558402B (en) | 2022-02-15 | 2022-02-15 | UV (ultraviolet) photocuring coating for tin printing and preparation process thereof |
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| CN115558402A true CN115558402A (en) | 2023-01-03 |
| CN115558402B CN115558402B (en) | 2024-01-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010074405A2 (en) * | 2008-12-23 | 2010-07-01 | 주식회사 포스코 | Ultraviolet curable resin composition for transparent color-painted steel sheet, and steel sheet using same |
| CN107227100A (en) * | 2017-04-05 | 2017-10-03 | 杭州中粮包装有限公司 | A kind of operplate printing UV gloss oil and its coating methods |
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2022
- 2022-02-15 CN CN202210135858.3A patent/CN115558402B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010074405A2 (en) * | 2008-12-23 | 2010-07-01 | 주식회사 포스코 | Ultraviolet curable resin composition for transparent color-painted steel sheet, and steel sheet using same |
| CN107227100A (en) * | 2017-04-05 | 2017-10-03 | 杭州中粮包装有限公司 | A kind of operplate printing UV gloss oil and its coating methods |
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| CN115558402B (en) | 2024-01-12 |
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