CN111454607A - Ultraviolet curing ink and preparation method thereof - Google Patents
Ultraviolet curing ink and preparation method thereof Download PDFInfo
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- CN111454607A CN111454607A CN201910048914.8A CN201910048914A CN111454607A CN 111454607 A CN111454607 A CN 111454607A CN 201910048914 A CN201910048914 A CN 201910048914A CN 111454607 A CN111454607 A CN 111454607A
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- 238000002360 preparation method Methods 0.000 title abstract description 20
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 28
- 239000000178 monomer Substances 0.000 claims abstract description 25
- 239000000049 pigment Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims description 121
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 63
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 54
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 51
- 238000001816 cooling Methods 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 42
- 229920000728 polyester Polymers 0.000 claims description 33
- 238000000227 grinding Methods 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 28
- 244000028419 Styrax benzoin Species 0.000 claims description 27
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 27
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 27
- 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 27
- 229960002130 benzoin Drugs 0.000 claims description 27
- 235000019382 gum benzoic Nutrition 0.000 claims description 27
- -1 polysiloxane Polymers 0.000 claims description 27
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 25
- 229920001296 polysiloxane Polymers 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 14
- 229920000570 polyether Polymers 0.000 claims description 14
- 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 14
- 229920000058 polyacrylate Polymers 0.000 claims description 13
- 238000007639 printing Methods 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims description 6
- 239000000454 talc Substances 0.000 claims description 6
- 235000012222 talc Nutrition 0.000 claims description 6
- 229910052623 talc Inorganic materials 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical group C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 claims description 4
- RDLGTRBJUAWSAF-UHFFFAOYSA-N 1-(6-hydroxy-6-methylcyclohexa-2,4-dien-1-yl)propan-2-one Chemical compound CC(=O)CC1C=CC=CC1(C)O RDLGTRBJUAWSAF-UHFFFAOYSA-N 0.000 claims description 3
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 claims description 3
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 claims description 3
- UDFGCAKEVMRBJU-UHFFFAOYSA-N CC(C[PH2]=O)CC(C)(C)C Chemical compound CC(C[PH2]=O)CC(C)(C)C UDFGCAKEVMRBJU-UHFFFAOYSA-N 0.000 claims description 3
- BDAHDQGVJHDLHQ-UHFFFAOYSA-N [2-(1-hydroxycyclohexyl)phenyl]-phenylmethanone Chemical compound C=1C=CC=C(C(=O)C=2C=CC=CC=2)C=1C1(O)CCCCC1 BDAHDQGVJHDLHQ-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 3
- 239000012965 benzophenone Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- LYXOWKPVTCPORE-UHFFFAOYSA-N phenyl-(4-phenylphenyl)methanone Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1C(=O)C1=CC=CC=C1 LYXOWKPVTCPORE-UHFFFAOYSA-N 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 claims 1
- VMMIGBGQMPISJP-UHFFFAOYSA-N aminosilyloxymethane Chemical class CO[SiH2]N VMMIGBGQMPISJP-UHFFFAOYSA-N 0.000 claims 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims 1
- 238000005488 sandblasting Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 239000000976 ink Substances 0.000 description 113
- 239000004814 polyurethane Substances 0.000 description 32
- 229920002635 polyurethane Polymers 0.000 description 32
- 238000001723 curing Methods 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 16
- 238000012512 characterization method Methods 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 12
- 239000002994 raw material Substances 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 9
- 238000003848 UV Light-Curing Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- OHAPIZYOVBUCCX-UHFFFAOYSA-N amino(methoxy)silicon Chemical compound CO[Si]N OHAPIZYOVBUCCX-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 125000003010 ionic group Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 2
- 238000000016 photochemical curing Methods 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010059866 Drug resistance Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
Abstract
The invention provides ultraviolet curing ink and a preparation method thereof, and the ink comprises the following components in percentage by weight based on the total weight of an ink composition: 10-45% of oligomer, 20-45% of active monomer, 30-65% of filler, 1-10% of photoinitiator and 0.5-2.0% of pigment, wherein the filler mainly adopts talcum powder, and the ink prepared by adopting the chemical components in the proportion has excellent performance, sand blasting resistance and strong adhesive force.
Description
Technical Field
The invention relates to the field of ultraviolet curing ink, in particular to ultraviolet curing ink and a preparation method thereof.
Background
Ultraviolet light curing ink, referred to as UV ink for short. Compared with the traditional ink, the UV ink is a rapidly-developed green environment-friendly ink, has the advantages of small environmental pollution, no change of ink viscosity along with the change of environmental conditions, high curing speed and the like, has good chemical drug resistance and physical property and good glossiness, is widely applied to various fields such as cigarette packaging, wine packaging, cosmetic packaging, drug packaging, adhesive sticker trademarks and the like, and can also be utilized in the photovoltaic industry. However, the wear resistance and sand blast resistance of the UV ink are poor in the printing or using process, and the UV ink has different loss degrees and poor adhesion in the long-term use process.
Disclosure of Invention
Objects of the invention
The invention aims to provide the ultraviolet curing ink which has excellent performance, sand blasting resistance and strong adhesive force.
(II) technical scheme
An ultraviolet light curing printing ink and a preparation method thereof, the specific scheme is as follows:
the invention provides ultraviolet curing ink which comprises the following components in percentage by weight:
10.0 to 45.0 percent of oligomer, 20.0 to 45.0 percent of active monomer, 30.0 to 65.0 percent of filler, 1.0 to 10.0 percent of photoinitiator and 0.5 to 2.0 percent of pigment; the filler comprises talc; wherein the weight percentages of the components are based on the total weight of the ink.
Furthermore, the ink also comprises 0.1-2.0% of an auxiliary agent.
Further, the ink comprises the following components in percentage by weight: 25.0 to 38.0 percent of oligomer, 20.0 to 30.0 percent of active monomer, 30.0 to 38.0 percent of filler, 3.5 to 7.0 percent of photoinitiator, 1.0 to 1.5 percent of pigment and 0.5 to 1.5 percent of auxiliary agent;
further preferably, the ink comprises the following components in percentage by weight: 35% of oligomer, 25% of active monomer, 33% of filler, 5% of photoinitiator, 1% of pigment and 1% of auxiliary agent; wherein the weight percentages of the components are based on the total weight of the ink.
Wherein the meaning of each component is as follows:
(1) the oligomer is a main component of the UV ink, and the oligomer refers to a polymer composed of a few repeating units, and is a matrix resin of a photocuring formulation, and forms a basic skeleton of a cured product, that is, basic properties (hardness, flexibility, adhesion, optical properties, aging resistance and the like) of the cured product are mainly determined by the oligomer resin, and the oligomer generally has groups capable of further reacting or polymerizing under the condition of light, such as C ═ C double bonds and epoxy groups.
(2) Reactive monomers, which are used primarily to modify the rheology of the oligomers, link high molecular weight oligomer molecules together and, depending on their functionality, generally contribute significantly to accelerating through cure. Difunctional, trifunctional and higher functional reactive monomers readily form crosslinked networks.
(3) Photoinitiator (2): the initiator is a substance which can easily absorb ultraviolet light to generate active free radicals or active ionic groups so as to initiate polymerization of unsaturated groups in the ink, and can absorb light energy with certain wavelength to generate active free radicals or cations so as to initiate or catalyze polymerization of corresponding monomers or prepolymers, so that the initiator is an optically active substance in the UV curing ink component.
(4) Pigment: plays a role in color development in the ink.
(5) Auxiliary agent: and adjusting and optimizing the oxidation resistance, wear resistance and stability of the UV ultraviolet curing ink.
(6) Filling: refers to the filling action in the UV ink.
Further, the ultraviolet curing ink is characterized in that the particle size of the talcum powder is 2-5 μm; preferably, the particle size of the talc is 3 μm, 4 μm or 3.5 μm.
Further, the uv curable ink according to any one of the above claims, wherein the filler further comprises one or more of barium sulfate, silica, bentonite, or kaolin.
Further, the ultraviolet light curing ink is characterized in that the oligomer is one or more of epoxy acrylate, polyurethane acrylate and polyester acrylate; preferably, the oligomer is a mixture of polyester acrylate and polyurethane acrylate, and the weight ratio of the polyester acrylate to the polyacrylate polyurethane is (3-5): 1; more preferably, the molecular weight of the epoxy acrylate is 1000-3000, and the acid value is 80-100.
Further, the reactive monomer is one or more of trimethylolpropane triacrylate, octadecyl acrylate, pentaerythritol triacrylate and 2-phenoxyethyl acrylate.
Further, the photoinitiator as described in any of the above is one or more of benzoin bis methyl ether, benzophenone, dibenzoyl, 2-hydroxy-2-methyl-phenyl acetone, 1-hydroxy-cyclohexyl benzophenone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2,4, 4-trimethylpentyl phosphine oxide, benzil diketone, 4-phenyl benzophenone.
Further, the pigment is one or more of carbon black, phthalocyanine blue and phthalocyanine green.
Further, the assistant is one or more of non-polysiloxane polymer, polyether modified polydimethylsiloxane copolymer, polyether modified polysiloxane, polyacrylate, 2, 6-di-tert-butylphenol and amino methoxysilane.
On the other hand, the invention also provides a preparation method of the ultraviolet curing ink, which is used for preparing any one of the ultraviolet curing inks, and is characterized by comprising the following steps:
1) putting the oligomer into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 120-150 ℃, and naturally cooling;
2) when the temperature of the reaction system is reduced to 100-120 ℃, putting a photoinitiator into the reaction kettle and uniformly stirring;
3) continuously and naturally cooling, and when the temperature of the reaction system is reduced to 80-100 ℃, sequentially adding the pigment and the active monomer into the reaction kettle, continuously stirring uniformly and grinding for 2-5 times;
4) and (3) continuously and naturally cooling, when the temperature of the reaction system is reduced to 50-70 ℃, sequentially adding the filler and the auxiliary agent into the reaction kettle, continuously stirring uniformly, and continuously grinding and uniformly dispersing the mixture to obtain the dry printing ink with the fineness of 10-20 microns.
Further, the temperature of the reaction system in the step 1) is 135 ℃;
further, the temperature of the reaction system in the step 2) is 100 ℃;
further, the temperature of the reaction system in the step 3) is 90 ℃, and the grinding times are 4;
further, the temperature of the reaction system in the step 4) is 60 ℃, and the fineness of the ink is 15 μm.
Further, the grinding equipment used in the steps is a three-roller grinding machine, and the uniformly dispersing equipment is a dispersing machine.
(III) advantageous effects
The invention discloses ultraviolet curing ink and a preparation method thereof, and the ink comprises the following components in percentage by weight based on the total weight of an ink composition: 10 to 45 percent of oligomer, 20 to 45 percent of active monomer, 30 to 65 percent of filler, 1 to 10 percent of photoinitiator, 0.5 to 2.0 percent of pigment and 0.1 to 2.0 percent of auxiliary agent. The low polymer, the active monomer, the photoinitiator, the pigment, the auxiliary agent and the filler are matched for use, and the talcum powder is mainly used as the filler, so that the wear resistance and the sand blast resistance of the ink disclosed by the invention can be improved, and the ink disclosed by the invention has better hardness, flexibility, adhesive force, wear resistance and optical performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to examples.
The application provides ultraviolet curing ink which comprises the following components in percentage by weight based on the total weight of an ink composition: 10 to 45 percent of oligomer, 20 to 45 percent of active monomer, 30 to 65 percent of filler, 1 to 10 percent of photoinitiator and 0.5 to 2.0 percent of pigment; the filler comprises talc.
Wherein the content of the first and second substances,
1) the oligomer is a main component of the UV ink, and the oligomer refers to a polymer composed of a few repeating units, and is a matrix resin of a photocuring formula, and forms a basic skeleton of a cured product, that is, basic performances (hardness, flexibility, adhesion, optical performance, aging resistance and the like) of the cured product are mainly determined by the oligomer resin, and the oligomer generally has groups capable of further reacting or polymerizing under the illumination condition, such as C ═ C double bonds and epoxy groups; 2) reactive monomer: the rheology of the oligomers can be improved by the addition of reactive monomers which link high molecular weight oligomer molecules together and, depending on their functionality, generally contribute significantly to accelerating full cure. Difunctional, trifunctional and higher functional reactive monomers all readily form crosslinked networks; 3) photoinitiator (2): the initiator is a substance which can easily absorb ultraviolet light energy to generate active free radicals or active ionic groups so as to initiate polymerization of unsaturated groups in the ink, and can absorb light energy with certain wavelength to generate active free radicals or cations so as to initiate or catalyze polymerization of corresponding monomers or prepolymers, so that the initiator is an optically active substance in the UV curing ink component; 4) pigment: the ink plays a color development role in the ink and endows the product with color; 5) filling: plays a role of filling in the UV printing ink and endows the product with certain shape.
The selection of the amount of each component can obviously improve the wear resistance and the sand blast resistance of the ink.
The invention selects the talcum powder as the filler, on one hand, the talcum powder is based on the excellent performance of the talcum powder, and the talcum powder belongs to silicon fillers, semiconductors and has good optical performance; on the other hand, as the filling material, the talcum powder has an inherent layered structure and excellent physicochemical properties such as oleophylic hydrophobicity, viscosity resistance, flow aiding, fire resistance, insulativity, good covering power, good gloss, strong adsorbability and the like, so that the talcum powder has better wear resistance and excellent sand blasting resistance.
Furthermore, the ink also comprises 0.1-2.0% of an auxiliary agent. The auxiliary agent has the functions of adjusting and optimizing the oxidation resistance, wear resistance and stability of the ultraviolet curing ink.
Further, the ink comprises the following components in percentage by weight: 25.0 to 38.0 percent of oligomer, 20.0 to 30.0 percent of active monomer, 30.0 to 38.0 percent of filler, 3.5 to 7.0 percent of photoinitiator, 1.0 to 1.5 percent of pigment and 0.5 to 1.5 percent of auxiliary agent; further preferably, the ink comprises the following components in percentage by weight: 35% of oligomer, 25% of active monomer, 33% of filler, 5% of photoinitiator, 1% of pigment and 1% of auxiliary agent; wherein the weight percentages of the components are based on the total weight of the ink. According to the invention, through experimental tests, a better component proportion is preferably selected, and the adhesive force, the wear resistance, the optical property and the aging resistance of the ink can be optimized to the greatest extent by selecting the numerical range of the components.
Further, the ultraviolet curing ink is characterized in that the particle size of the talcum powder is 2-5 μm; preferably, the particle size of the talc is 3 μm, 4 μm or 3.5 μm. The particle size of the talcum powder is the key point of the research of the invention, and the inventor tests that when the particle size of the talcum powder is selected to be 2-5 mu m, the UV curing ink has better optical property and wear resistance, and especially when the particle size is selected to be 3-4 mu m or 3.5 mu m, the performance of the UV curing ink reaches the best.
Further, the uv curable ink according to any one of the above claims, wherein the filler further comprises one or more of barium sulfate, silica, bentonite, or kaolin. The fillers have better wear resistance, plasticity and fire resistance, and the wear resistance and the sand blast resistance of the ink can be enhanced by adding the ink.
Further, the ultraviolet light curing ink is characterized in that the oligomer is one or more of epoxy acrylate, polyurethane acrylate and polyester acrylate; preferably, the oligomer is a mixture of polyester acrylate and polyurethane acrylate, and the weight ratio of the polyester acrylate to the polyacrylate polyurethane is (3-5): 1. The polyurethane acrylate and the polyester acrylate are selected to be mixed for use, so that the oligomer with excellent curing performance under UV can be obtained, when the ratio of the polyurethane acrylate to the polyester acrylate is (3-5): 1, the rheological property is optimal, the curing speed is high, and the obtained polymer has good mechanical strength and ageing resistance.
Further, the reactive monomer is one or more of trimethylolpropane triacrylate, octadecyl acrylate, pentaerythritol triacrylate and 2-phenoxyethyl acrylate. The selection of the monomers can significantly accelerate the crosslinking and curing of the oligomers and accelerate the reaction rate.
Further, the photoinitiator as described in any of the above is one or more of benzoin bis methyl ether, benzophenone, dibenzoyl, 2-hydroxy-2-methyl-phenyl acetone, 1-hydroxy-cyclohexyl benzophenone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2,4, 4-trimethylpentyl phosphine oxide, benzil diketone, 4-phenyl benzophenone. The photoinitiator has better stability, is matched with the oligomer for use, and has less dosage and better initiation performance.
Further, the pigment is one or more of carbon black, phthalocyanine blue and phthalocyanine green. The pigment has good stability and gives the ink a certain color.
Further, the assistant is one or more of non-polysiloxane polymer, polyether modified polydimethylsiloxane copolymer, polyether modified polysiloxane, polyacrylate, 2, 6-di-tert-butylphenol and amino methoxysilane. The auxiliary agent has good high temperature resistance, oxidation resistance, wear resistance and hydrophobicity, has certain lubricity, and can remarkably improve the wear resistance, sand blast resistance and stability of the ink.
On the other hand, the selection of parameters in all aspects of the preparation method is a better parameter screened by the inventor through experiments, the temperature of the reaction system is strictly controlled, the progress of the ink forming reaction can be controlled, the generation of byproducts can be remarkably reduced, the reaction efficiency is remarkably improved, and the product proportion is improved.
Example 1
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 20 percent (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 3:1), the trimethylolpropane triacrylate accounts for 20 percent, the talcum powder accounts for 40 percent, the benzoin dimethyl ether accounts for 3 percent, the phthalocyanine blue accounts for 1 percent, and the non-polysiloxane macromolecules account for 1 percent; the particle size of the talcum powder is 2 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 70 ℃, sequentially adding talcum powder and non-polysiloxane macromolecules into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 20 mu m.
Example 2
Raw materials: based on the total weight of the ink, the epoxy acrylate accounts for 30 percent, the trimethylolpropane triacrylate accounts for 25 percent, the talcum powder accounts for 40 percent, the benzoin dimethyl ether accounts for 2.5 percent, the phthalocyanine blue accounts for 1.5 percent, and the non-polysiloxane polymer accounts for 0.5 percent; the particle size of the talcum powder is 5 mu m. .
The preparation method comprises the following steps: 1) putting the epoxy acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 130 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, when the temperature of the reaction system is reduced to 80 ℃, sequentially adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 50 ℃, sequentially adding talcum powder and non-polysiloxane macromolecules into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 20 mu m.
Example 3
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 30 percent (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 3:1), the trimethylolpropane triacrylate accounts for 20 percent, the talcum powder accounts for 45 percent, the benzoin dimethyl ether accounts for 3.5 percent, the phthalocyanine blue accounts for 1 percent, and the polyether modified polysiloxane accounts for 0.5 percent; the particle size of the talcum powder is 3 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyether modified polysiloxane into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Example 4
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 15 percent (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 4:1), 5 percent of epoxy acrylate, 35 percent of trimethylolpropane triacrylate, 39 percent of talcum powder, 2 percent of benzoin dimethyl ether, 2 percent of phthalocyanine green and 2 percent of polyether modified polysiloxane; the particle size of the talcum powder is 4 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 120 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 100 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, when the temperature of the reaction system is reduced to 90 ℃, sequentially adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyether modified polysiloxane into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain dry ink with the fineness of 15 mu m.
Example 5
Raw materials: based on the total weight of the ink, the epoxy acrylate accounts for 15%, the trimethylolpropane triacrylate accounts for 20%, the talcum powder accounts for 35%, the kaolin accounts for 5%, the diatomite accounts for 20%, the benzoin dimethyl ether accounts for 3%, the phthalocyanine blue accounts for 1%, and the polyacrylate accounts for 1%; the particle size of the talcum powder is 3.5 mu m.
The preparation method comprises the following steps: 1) putting the epoxy acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyacrylate into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Example 6
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 20% (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 2:1), the trimethylolpropane triacrylate accounts for 25%, the talcum powder accounts for 30%, the silicon dioxide accounts for 10%, the bentonite accounts for 10%, the benzoin dimethyl ether accounts for 3.5%, the phthalocyanine blue accounts for 1%, and the polyacrylate accounts for 0.5%.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyacrylate into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Comparative example 1
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 40% (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 3:1), the trimethylolpropane triacrylate accounts for 20%, the talcum powder accounts for 20%, the benzoin dimethyl ether accounts for 3%, the phthalocyanine blue accounts for 1%, the non-polysiloxane polymer accounts for 1%, and the particle size of the talcum powder is 2 μm.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 70 ℃, sequentially adding talcum powder and non-polysiloxane macromolecules into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Comparative example 2
Raw materials: based on the total weight of the ink, the epoxy acrylate accounts for 14 percent, the trimethylolpropane triacrylate accounts for 11.5 percent, the talcum powder accounts for 70 percent, the benzoin dimethyl ether accounts for 2.5 percent, the phthalocyanine blue accounts for 1.5 percent, and the non-polysiloxane polymer accounts for 0.5 percent; the particle size of the talcum powder is 20 mu m.
The preparation method comprises the following steps: 1) putting the epoxy acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 130 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, when the temperature of the reaction system is reduced to 80 ℃, sequentially adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 50 ℃, sequentially adding talcum powder and non-polysiloxane macromolecules into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 20 mu m.
Comparative example 3
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 30 percent (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 3:1), the trimethylolpropane triacrylate accounts for 20 percent, the talcum powder accounts for 45 percent, the benzoin dimethyl ether accounts for 3.5 percent, the phthalocyanine blue accounts for 1 percent, and the polyether modified polysiloxane accounts for 0.5 percent; the particle size of the talcum powder is 20 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyether modified polysiloxane into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Comparative example 4
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 15% (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 4:1), the epoxy acrylate accounts for 5%, the trimethylolpropane triacrylate accounts for 35%, the talcum powder accounts for 34%, the benzoin dimethyl ether accounts for 2%, the phthalocyanine green accounts for 2%, and the polyether modified polysiloxane accounts for 2%; the particle size of the talcum powder is 12 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 120 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 100 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, when the temperature of the reaction system is reduced to 90 ℃, sequentially adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyether modified polysiloxane into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain dry ink with the fineness of 15 mu m.
Comparative example 5
Raw materials: based on the total weight of the ink, the epoxy acrylate accounts for 15%, the trimethylolpropane triacrylate accounts for 20%, the talcum powder accounts for 35%, the kaolin accounts for 5%, the diatomite accounts for 20%, the benzoin dimethyl ether accounts for 3%, the phthalocyanine blue accounts for 1%, and the polyacrylate accounts for 1%; the particle size of the talcum powder is 16 mu m.
The preparation method comprises the following steps: 1) putting the epoxy acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyacrylate into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
Comparative example 6
Raw materials: based on the total weight of the ink, the mixture of the polyester acrylate and the polyurethane acrylate accounts for 20 percent (wherein the weight ratio of the polyester acrylate to the polyurethane acrylate is 2:1), the trimethylolpropane triacrylate accounts for 25 percent, the silicon dioxide accounts for 10 percent, the bentonite accounts for 50 percent, the benzoin dimethyl ether accounts for 3.5 percent, the phthalocyanine blue accounts for 1 percent, and the polyacrylate accounts for 0.5 percent; the particle size of the talcum powder is 10 mu m.
The preparation method comprises the following steps: 1) putting the mixture of polyester acrylate and polyurethane acrylate into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 150 ℃, and naturally cooling; 2) when the temperature of the reaction system is reduced to 120 ℃, adding benzoin dimethyl ether into the reaction kettle and uniformly stirring; 3) continuously cooling, adding phthalocyanine blue and trimethylolpropane triacrylate into the reaction kettle in sequence when the temperature of the reaction system is reduced to 100 ℃, continuously stirring uniformly, and grinding for 3 times by using a three-roll grinder; 4) and (3) continuously cooling, when the temperature of the reaction system is reduced to 60 ℃, sequentially adding talcum powder and polyacrylate into the reaction kettle, continuously stirring uniformly, continuously grinding the mixture, and uniformly dispersing by using a dispersion machine to obtain the dry ink with the fineness of 10 mu m.
(III) Experimental examples and results:
1. the experimental results after the performance tests of the examples 1-6 are shown in tables 1-6; comparative examples 1-6 performance testing;
2. properties of the ink prepared
The inks obtained in examples 1-6 were all liquids, blue viscous liquids, slightly odorous, insoluble in water, and had a density of 1.1-1.3 g/ml; the inks obtained in comparative examples 1 to 6 were all liquids, blue viscous liquids, have a slight odor, are insoluble in water, and have a density of 1.2 to 1.5 g/ml.
3. Performance parameters: the viscosity and fineness of the ink are tested; and the surface properties of the material after fixed printing mesh printing, Ultraviolet (UV) curing and sand blasting are adopted; and in addition, the duration of sand blasting resistance is tested, the time for the ink layer to fall off is less than or equal to 45s, namely the unqualified product is not qualified, and the unqualified product is a main performance reflection parameter of sand blasting resistance. The experimental results of examples 1-6 and comparative examples 1-6 are reflected in tables 1-6 and 7-12.
TABLE 1 ink Performance characterization results prepared in example 1
TABLE 2 ink Performance characterization results prepared in example 2
TABLE 3 ink Performance characterization results prepared in example 3
TABLE 4 ink Performance characterization results prepared in example 4
TABLE 5 ink Performance characterization results prepared in example 5
TABLE 6 ink Performance characterization results prepared in example 6
TABLE 7 characterization results of the inks prepared in comparative example 1
TABLE 8 ink Performance characterization results prepared in comparative example 2
TABLE 9 ink Performance characterization results prepared in comparative example 3
TABLE 10 characterization results of the inks prepared in comparative example 4
TABLE 11 ink Performance characterization results prepared in comparative example 5
TABLE 12 ink Performance characterization results prepared in comparative example 6
According to the ink products prepared in the above examples 1-6 and comparative examples 1-6 and the performance characterization results,
(1) when the filler comprises talcum powder, and the talcum powder is used and the amount limited by the numerical range of the invention is adopted, the density, fineness, silk-screen printing performance, UV curing, sand blasting resistance duration and other performances of the prepared ink can reach the relevant quality requirements, and the sand blasting resistance duration is far superior to that of the ink prepared by the prior art;
(2) the curing is fast and the uniformity of the film layer is good: after the UV ultraviolet curing ink prepared by the formula is printed and coated, a photoinitiator in the UV ultraviolet curing ink is further polymerized under the excitation of UV ultraviolet light, and further, high molecular weight oligomer molecules are connected together under the excitation of the ultraviolet light in an active monomer with multiple functional groups to accelerate curing.
(3) The talcum powder filler is combined with other optical initiators, optical active monomers and the like, under the excitation of ultraviolet light, an optical active material in the UV ink and the talcum powder generate optical active reaction to form the high-molecular modified talcum powder filler, and the UV ink has the advantages of good optical activity, high physical strength, excellent wear resistance and ductility, and is particularly suitable for the field of UV ink.
(4) The filler plays an important role in the rheological property and the physical and mechanical properties of the ink. In particular, the inventors have unexpectedly learned through experimentation that the amount and particle size of a particular filler severely affects the performance of the ink.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The ultraviolet light curing ink is characterized by comprising the following components in percentage by weight:
10.0 to 45.0 percent of oligomer, 20.0 to 45.0 percent of active monomer, 30.0 to 65.0 percent of filler, 1.0 to 10.0 percent of photoinitiator and 0.5 to 2.0 percent of pigment; the filler comprises talcum powder, wherein the weight percentages of the components are based on the total weight of the ink.
2. The UV curable ink according to claim 1, further comprising 0.1-2.0% of an auxiliary agent.
3. The ultraviolet-curable ink according to claim 1 or 2, wherein the talc has a particle size of 2 to 5 μm; preferably, the particle size of the talc is 3 μm, 4 μm or 3.5 μm.
4. The uv curable ink according to claim 1 or 2, wherein the filler further comprises one or more of barium sulfate, silica, bentonite, and kaolin.
5. The UV curable ink according to claim 1 or 2, wherein the oligomer is one or more of epoxy acrylate, urethane acrylate and polyester acrylate.
6. The UV curable ink according to claim 1 or 2, wherein the reactive monomer is one or more of trimethylolpropane triacrylate, stearyl acrylate, pentaerythritol triacrylate, 2-phenoxyethyl acrylate.
7. The uv curable ink according to claim 1 or 2, wherein the photoinitiator is one or more of benzoin bis methyl ether, benzophenone, dibenzoyl, 2-hydroxy-2-methyl-phenyl acetone, 1-hydroxy-cyclohexyl benzophenone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2,4, 4-trimethylpentylphosphine oxide, benzil dione, 4-phenylbenzophenone.
8. The UV curable ink according to claim 1 or 2, wherein the pigment is one or more of carbon black, phthalocyanine blue and phthalocyanine green.
9. The ultraviolet curing ink as claimed in claim 2, wherein the auxiliary agent is one or more of non-polysiloxane macromolecules, polyether modified polydimethylsiloxane copolymers, polyether modified polysiloxanes, polyacrylates, 2, 6-di-tert-butylphenol and amino methoxysilanes.
10. A method for preparing the uv curable ink according to any one of claims 2 to 9, comprising the steps of:
1) putting the oligomer into a reaction kettle for heating, stopping heating when the temperature of a reaction system reaches 120-150 ℃, and naturally cooling;
2) when the temperature of the reaction system is reduced to 100-120 ℃, putting a photoinitiator into the reaction kettle and uniformly stirring;
3) continuously and naturally cooling, and when the temperature of the reaction system is reduced to 80-100 ℃, sequentially adding the pigment and the active monomer into the reaction kettle, continuously stirring uniformly and grinding for 2-5 times;
4) and (3) continuously and naturally cooling, when the temperature of the reaction system is reduced to 50-70 ℃, sequentially adding the filler and the auxiliary agent into the reaction kettle, continuously stirring uniformly, and continuously grinding and uniformly dispersing the mixture to obtain the dry printing ink with the fineness of 10-20 microns.
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| CN114292550A (en) * | 2022-01-11 | 2022-04-08 | 青岛定成新材料技术有限公司 | Formula and preparation method of ultra-high reflection UV (ultraviolet) ink |
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