CN111117362A - Photocurable inkjet ink and printed article - Google Patents
Photocurable inkjet ink and printed article Download PDFInfo
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- CN111117362A CN111117362A CN201911384190.0A CN201911384190A CN111117362A CN 111117362 A CN111117362 A CN 111117362A CN 201911384190 A CN201911384190 A CN 201911384190A CN 111117362 A CN111117362 A CN 111117362A
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- 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
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
Abstract
Photo-curable inkjet inks and printed articles are disclosed. The photo-curing ink-jet ink comprises the following components: 40-80% by weight of monofunctional monomer, 3-25% by weight of difunctional monomer and 2-8% by weight of photoinitiator; wherein the monofunctional monomer comprises a first monofunctional monomer having a glass transition temperature of less than 20 ℃ and a second monofunctional monomer having a glass transition temperature of greater than 60 ℃; the weight ratio of the first monofunctional monomer to the second monofunctional monomer is 10-19: 1-10. The curing speed of the obtained photocuring inkjet ink can be improved on the premise that the good flexibility of the obtained photocuring inkjet ink is realized.
Description
Technical Field
The present application relates to the field of printing technology, and in particular, to photocurable inkjet inks and printed articles.
Background
Along with social development, diversified demands of products are increasing, and photocuring inkjet has been applied to aspects of life with the advantages of flexibility, changeability, high production efficiency and the like, such as common advertising, mobile phone shell printing, wallpaper industry and the like.
In common applications, the photo-curing ink-jet ink is mature in application, and common ink on the market can meet general requirements, but the photo-curing ink-jet ink still has some defects in performance for special industries. For example, the photo-curable inkjet ink has an unpleasant curing speed, so that printed products made of the photo-curable inkjet ink have the problems of bubbles, easiness in scratching and the like, and the photo-curable inkjet ink has poor flexibility and is easy to bend and crack.
Disclosure of Invention
The main object of the present application is to provide a photo-curable inkjet ink and a printed article, which can improve the curing speed of the obtained photo-curable inkjet ink on the premise of achieving good flexibility of the obtained photo-curable inkjet ink.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a photo-curable inkjet ink, wherein the photo-curable inkjet ink comprises the following components: 40-80% by weight of a monofunctional monomer; 3-25% by weight of a bifunctional monomer; and 2-8% by weight of a photoinitiator;
wherein the monofunctional monomer comprises a first monofunctional monomer having a glass transition temperature of less than 20 ℃ and a second monofunctional monomer having a glass transition temperature of greater than 60 ℃; the weight ratio of the first monofunctional monomer to the second monofunctional monomer is 10-19: 1-10.
In order to achieve the purpose, the other technical scheme adopted by the application is as follows: a printed product is provided, wherein the printed product is made of the photo-curing ink-jet ink.
Compared with the prior art, the beneficial effects of this application are: by regulating the proportion of the first monofunctional monomer to the second monofunctional monomer in the monofunctional monomers to be 10-19:1-10, the photocuring inkjet ink has certain toughness while having flexibility, can well meet the bending resistance of a printed product made of the photocuring inkjet ink, and has certain mechanical property; and a proper amount of bifunctional monomer is added into the ink with a proper proportion of the first monofunctional monomer and the second monofunctional monomer, so that the curing speed of the obtained photocuring inkjet ink can be improved on the premise of realizing good flexibility of the obtained photocuring inkjet ink.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
The application discloses a photo-curable inkjet ink. The photo-curing ink-jet ink comprises 40-80 wt% of monofunctional monomer, 3-25 wt% of difunctional monomer and 2-8 wt% of photoinitiator.
Specifically, by adding a bifunctional monomer to the photo-curable inkjet ink and by regulating the component contents of the monofunctional monomer and the bifunctional monomer, the curing performance of the obtained photo-curable inkjet ink can be improved. Preferably, the photo-curable inkjet ink may include 50% to 70% by weight of the monofunctional monomer and 5% to 20% by weight of the difunctional monomer. Wherein the bifunctional monomer may be selected from one or more of 1, 6-hexanediol diacrylate, dipropylene glycol diacrylate, neopentyl glycol diacrylate, tripropylene glycol diacrylate and tricyclodecane dimethanol diacrylate.
In this embodiment, the monofunctional monomers include a first monofunctional monomer having a glass transition temperature of less than 20 ℃ and a second monofunctional monomer having a glass transition temperature of greater than 60 ℃. And the weight ratio of the first monofunctional monomer to the second monofunctional monomer is 10-19: 1-10.
Wherein the first monofunctional monomer may be one or more of tetrahydrofuran acrylate, isodecyl acrylate, dodecyl acrylate, 2-propenoic acid- (5-ethyl-1, 3-dioxan-5-yl), methyl ester (CTFA), 2-phenoxyethyl acrylate, ethoxyethoxyethyl acrylate, and alkoxylated tetrahydrofuran acrylate.
Wherein the second monofunctional monomer is one or more of 3,3, 5-trimethylcyclohexyl methacrylate, isobornyl acrylate, N-morpholine acrylate, N-dimethylacrylamide and N-ethylcaprolactam. The second monofunctional monomer can be N-ethyl caprolactam, and although the curing performance of the N-ethyl caprolactam is not good, the N-ethyl caprolactam can be quickly cured under the drive of other substances such as a bifunctional monomer and the like, and can provide certain mechanical properties for the photocuring inkjet ink.
Specifically, the ratio of the first monofunctional monomer addition may be regulated depending on the nature of the first monofunctional monomer and the second monofunctional monomer themselves. For example, when the first monofunctional monomer is 5-ethyl-1, 3-dioxan-5-yl methyl 2-acrylate (CTFA), the amount of the first monofunctional monomer used may be increased. For another example, when the first monofunctional monomer is ethoxyethoxyethyl acrylate (EOEOEA), the amount of the first monofunctional monomer used can be reduced.
Of course, the ratio of the first monofunctional monomer and the second monofunctional monomer can also be determined comprehensively according to the nature and the addition amount of other components of the photo-curable inkjet ink, such as the nature and the addition amount of the bifunctional monomer.
The proportion of the first monofunctional monomer to the second monofunctional monomer in the monofunctional monomers is regulated to 10-19:1-10, so that the photocuring inkjet ink has certain toughness while being flexible, the bending resistance of a printed product made of the photocuring inkjet ink can be well met, and the obtained photocuring inkjet ink has certain mechanical property; and a proper amount of bifunctional monomer is added into the ink with a proper proportion of the first monofunctional monomer and the second monofunctional monomer, so that the curing speed of the obtained photocuring inkjet ink can be improved on the premise of realizing good flexibility of the obtained photocuring inkjet ink.
In addition, in this embodiment, the photo-curable inkjet ink may further include 0% to 10% by weight of a trifunctional monomer and 0% to 5% by weight of a higher functional monomer. Wherein the high functional monomer has a functionality of greater than or equal to four. By adding the trifunctional monomer and the high-functional monomer, the bifunctional monomer and the monofunctional monomer can be driven to be rapidly cured, and the flexibility of the obtained photocuring inkjet ink is slightly or not influenced, so that the curing performance of the obtained photocuring inkjet ink can be improved on the premise of sacrificing little flexibility, and the using amount of the bifunctional monomer can be relatively reduced.
Preferably, the photo-curable inkjet ink may include 1% to 2% by weight of the tri-functional monomer and 0% to 3% by weight of the high-functional monomer.
Wherein, the trifunctional monomer can be one or more selected from trimethylolpropane triacrylate, ethoxytrimethylolpropane triacrylate and pentaerythritol triacrylate.
Specifically, the high functional monomer may be selected from one or more of pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, and dipentaerythritol hexaacrylate.
In addition, in this embodiment, the photo-curable inkjet ink may further include 0% to 10% by weight of a bifunctional urethane acrylate prepolymer. The bifunctional polyurethane acrylate prepolymer has the advantages of good flexibility, high photocuring speed and the like.
Specifically, the difunctional urethane acrylate prepolymer may be an aliphatic or alicyclic urethane acrylate prepolymer. In addition, the molecular weight of the bifunctional urethane acrylate prepolymer can be 800-3000, and if the molecular weight is too small, the flexibility and the photocuring speed of the obtained photocuring inkjet ink cannot be improved; if the molecular weight is too large, the resulting photocurable inkjet ink cannot be jet printed onto a support.
In addition, in the present embodiment, the photo-curable inkjet ink may further include 3 wt% to 15 wt% of a colorant and 0.3 wt% to 3 wt% of an auxiliary agent.
The colorant may be titanium dioxide. Of course, in other embodiments, the colorant may be selected from one or more of phthalocyanine blue pigments, quinacridone pigments, azo pigments, benzimidazolone pigments, and carbon black pigments.
It is understood that when the obtained photo-curable inkjet ink is white ink, a yellowing-resistant initiator can be used as the photoinitiator, so that the yellowing resistance of a printed product made of the white ink is ensured. The yellowing resistant photoinitiator may be selected from one or more of ethyl 2,4, 6-trimethylbenzoylphenylphosphonate, 2,4, 6-trimethylbenzoyl acyl-diphenylphosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone (184) and 2-hydroxy-methylphenyl propane-1-one (1173).
Of course, in other embodiments, the photoinitiator may also be selected from non-yellowing initiators, such as one or more selected from phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide (819), 2-phenylbenzyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-propanone (907), 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinylbenzyl phenyl) butanone (369), 2, 4-Diethylthioxanthone (DETX), and Isopropylthioxanthone (ITX).
The auxiliary agent may include a dispersant, a leveling agent, a defoaming agent, a light stabilizer, and the like.
The photo-curing ink-jet ink disclosed above can be applied to at least the printing industry, is printed on a carrier through ink-jet printing, and can form a printed product through photo-curing. Thus, the present application also discloses a printed article made from the photo-curable inkjet ink disclosed above. Wherein the printed product can be wallpaper, a mobile phone shell or colored drawings arranged on a carrier.
The photocuring inkjet ink disclosed above has the advantages of rapid curing capability under the printing condition, good surface drying performance, excellent deep curing, excellent scratch resistance of the printed ink layer, good flexibility and suitability for medium application requiring flexible 3D printing.
In the present embodiment, the thickness of the printed product may be 1mm, but the thickness of the printed product is not limited thereto, and may be 1um, or may be other thicknesses.
The application also discloses a preparation method of the photo-curing ink-jet ink, which specifically comprises the following steps: mixing a colorant, a part of reaction monomers and the like, grinding the mixture to a stable system by using zirconium beads, and filtering the mixture to obtain a color paste mixture; uniformly mixing the difunctional urethane acrylate prepolymer, the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink.
The reactive monomer may include one or more of a bifunctional monomer and a monofunctional monomer, a trifunctional monomer, and a highly functional monomer, among others. The monofunctional monomer includes a first monofunctional monomer and a second monofunctional monomer. In other embodiments, the reactive monomers may also include trifunctional monomers and higher functional monomers.
Alternatively, mixing the colorant with a partially reacted monomer, etc., may include: the colorant, partially reactive monomers, dispersant and light stabilizer are mixed.
Wherein the apparent viscosity of the photo-curing ink-jet ink obtained by the method is 7-12cps (45 ℃); the maximum particle diameter is less than 1 μm, and the surface tension is 25-35mN/m (25 ℃), so that the ink jet printing requirements can be met.
The present application will be further illustrated by the following non-limiting examples.
Example 1
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 41% of a first monofunctional monomer (methyl ester); 28% of a second monofunctional monomer (N-ethylcaprolactam); 20% of a bifunctional monomer (1, 6-hexanediol diacrylate); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 1.
Example 2
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 59% of a first monofunctional monomer (methyl ester); 10% of a second monofunctional monomer (N-ethylcaprolactam); 20% of a bifunctional monomer (1, 6-hexanediol diacrylate); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 2.
Example 3
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 49% of a first monofunctional monomer (ethoxyethoxyethyl acrylate); 15% of a second monofunctional monomer (morpholine N-acrylate); difunctional monomer (neopentyl glycol diacrylate) 17%; trifunctional monomer (trimethylolpropane triacrylate) 5%; 3% of a bifunctional urethane acrylate prepolymer (molecular weight 1000); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the difunctional urethane acrylate prepolymer, the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 3.
Example 4
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 67% of a first monofunctional monomer (alkoxylated tetrahydrofurfuryl acrylate); 4% of a second monofunctional monomer (N, N-dimethylacrylamide); 10% of bifunctional monomer (dipropylene glycol diacrylate); 5% of trifunctional monomer (pentaerythritol triacrylate); 3% of high-functional monomer (dipentaerythritol hexaacrylate); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2-hydroxy-methyl phenyl propane-1-ketone); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 4.
Example 5
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 34% of a first monofunctional monomer (dodecyl acrylate); 23% of a second monofunctional monomer (isobornyl acrylate); 6% of a bifunctional monomer (tricyclodecane dimethanol diacrylate); trifunctional monomer (trimethylolpropane triacrylate) 11%; 5% of high-functional monomer (dipentaerythritol pentaacrylate); 10% of a bifunctional urethane acrylate prepolymer (molecular weight 2500); 4% of colorant (titanium dioxide); 6.5% of photoinitiator (1-hydroxy-cyclohexyl-phenyl ketone); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the difunctional urethane acrylate, the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 5.
Example 6
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 52% of a first monofunctional monomer (alkoxylated tetrahydrofurfuryl acrylate); 14% of a second monofunctional monomer (morpholine N-acrylate); 15% of bifunctional monomer (tricyclodecane dimethanol diacrylate); trifunctional monomer (pentaerythritol triacrylate) 3%; a difunctional urethane acrylate prepolymer (molecular weight 1500) 5%; 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2-hydroxy-methyl phenyl propane-1-ketone); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the difunctional urethane acrylate, the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 6.
Comparative example 1
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 25% of a first monofunctional monomer (methyl ester); 44% of a second monofunctional monomer (N-ethylcaprolactam); 20% of a bifunctional monomer (1, 6-hexanediol diacrylate); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, the reaction monomer and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 7.
Comparative example 2
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 47.1% of a first monofunctional monomer (dodecyl acrylate); 31.9% of a second monofunctional monomer (isobornyl acrylate); 10% of a bifunctional urethane acrylate prepolymer (molecular weight 2500); 4% of colorant (titanium dioxide); 6.5% of photoinitiator (1-hydroxy-cyclohexyl-phenyl ketone); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant and a part of reaction monomers are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the difunctional urethane acrylate, the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 8.
Comparative example 3
The photo-curing inkjet ink of the embodiment comprises the following raw materials in percentage by weight: 76.1% of a first monofunctional monomer (methyl ester); 12.9% of a second monofunctional monomer (N-ethylcaprolactam); 4% of colorant (titanium dioxide); 6.5 percent of photoinitiator (2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate); 0.5 percent of auxiliary agent.
According to the preparation method of the photocuring inkjet ink, the colorant, a part of reaction monomers and the like are mixed, zirconium beads are used for grinding to a stable system, and a color paste mixture is obtained after filtering; uniformly mixing the residual reaction monomer, the photoinitiator, the color paste mixture and the auxiliary agent in sequence to obtain an ink mixture; and filtering the ink mixture to obtain the photocuring inkjet ink No. 9.
Specifically, the photo-curable inkjet inks nos. 1 to 9 described above were prepared into printed articles of the same shape and size by an inkjet printer under the same ejection conditions and the same curing conditions.
Also, the printed articles prepared from the photocurable inkjet inks nos. 1 to 9 were tested for their performance by the following test methods.
1. Speed of curing
The surface of the printed product is scratched with the same amount of force, and then scratches occurring on the surface of the printed product are inspected. If the printed product is confirmed not to generate scratch mark, evaluating the curing speed of the printed product by using 'O'; if it is confirmed that the printed product is scratched, the curing speed of the printed product is evaluated by "X".
2. Rate of surface drying
And observing whether the surface of the printed product is skinned or not. If it is confirmed that the printed product is not skinned, the surface drying speed of the printed product is evaluated as "O"; if the peeling of the printed product is confirmed, the surface drying speed of the printed product is evaluated by "X".
3. Flexibility
And (4) after the printed product is folded in half, observing whether cracks exist at the folded part of the printed product. If the printed product is confirmed to have no crack at the folded part, the flexibility of the printed product is evaluated by using 'O'; if it is confirmed that the printed product has a crack in the folded portion, the flexibility of the printed product is evaluated by "X".
Specific detection results are shown in table 1.
TABLE 1
As can be seen from table 1, the photo-curable inkjet inks nos. 1 to 6 prepared in examples 1 to 6 have not only fast curing speed and surface drying speed but also excellent flexibility, and in addition, by comparing examples 1 and 2 with comparative example 1, it was found that the flexibility of the printed article, i.e., the flexibility of the photo-curable inkjet ink, can be ensured only by controlling the ratio of the first monofunctional monomer to the second monofunctional monomer within a proper range. Also, it can be found by comparing example 2 and comparative example 3 that the addition of the bifunctional monomer to the photo-curable inkjet ink can increase the curing speed of the resulting photo-curable inkjet ink. In addition, it can be seen by comparing example 5 and comparative example 2 that the addition of the bifunctional monomer, the trifunctional monomer, and the higher functional monomer to the photo-curable inkjet ink can increase the curing speed of the resulting photo-curable inkjet ink.
The above embodiments are merely examples, which are not intended to limit the scope of the present disclosure, and all modifications and equivalents of the structures and equivalent processes that are obvious from the description of the present disclosure, or that may be directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present disclosure.
Claims (10)
1. A photo-curable inkjet ink, comprising the following components:
40-80% by weight of a monofunctional monomer;
3-25% by weight of a bifunctional monomer; and
2-8% by weight of a photoinitiator;
wherein the monofunctional monomer comprises a first monofunctional monomer having a glass transition temperature of less than 20 ℃ and a second monofunctional monomer having a glass transition temperature of greater than 60 ℃; the weight ratio of the first monofunctional monomer to the second monofunctional monomer is 10-19: 1-10.
2. The photo-curable inkjet ink according to claim 1, further comprising 0 to 10 wt% of a tri-functional monomer and 0 to 5 wt% of a high-functional monomer, wherein the functionality of the high-functional monomer is greater than or equal to four.
3. The photo-curable inkjet ink according to claim 2, wherein the photo-curable inkjet ink comprises the following components:
40-70% by weight of a monofunctional monomer;
5-20% by weight of a bifunctional monomer;
1-2% by weight of a trifunctional monomer; and
0-3% by weight of a high-functional monomer.
4. The photo-curable inkjet ink according to claim 2,
the difunctional monomer is one or more of 1, 6-hexanediol diacrylate, dipropylene glycol diacrylate, neopentyl glycol diacrylate, tripropylene glycol diacrylate and tricyclodecane dimethanol diacrylate;
the trifunctional monomer is one or more of trimethylolpropane triacrylate, ethoxytrimethylolpropane triacrylate and pentaerythritol triacrylate;
the high-functional monomer is one or more of pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate.
5. The photo-curable inkjet ink according to claim 1,
the first monofunctional monomer is one or more of tetrahydrofuran acrylate, isodecyl acrylate, dodecyl acrylate, 2-propenoic acid- (5-ethyl-1, 3-dioxan-5-yl), methyl ester, 2-phenoxyethyl acrylate, ethoxyethoxyethyl acrylate, and alkoxylated tetrahydrofuran acrylate;
the second monofunctional monomer is one or more of 3,3, 5-trimethylcyclohexyl methacrylate, isobornyl acrylate, N-morpholine acrylate, N-dimethylacrylamide and N-ethylcaprolactam.
6. The photo-curable inkjet ink according to claim 1, further comprising 0 to 10 wt% of a difunctional urethane acrylate prepolymer.
7. The photo-curable inkjet ink according to claim 6, wherein the difunctional urethane acrylate prepolymer is an aliphatic or alicyclic urethane acrylate prepolymer, and the molecular weight of the difunctional urethane acrylate prepolymer is 800-3000.
8. The photo-curable inkjet ink according to claim 1, further comprising 3 to 15 wt% of a colorant and 0.3 to 3 wt% of an auxiliary agent; the colorant is titanium dioxide.
9. The photo-curable inkjet ink according to claim 8, wherein the photo-initiator is a yellowing-resistant photo-initiator, and the photo-initiator is one or more of ethyl 2,4, 6-trimethylbenzoylphenylphosphonate, 2,4, 6-trimethylbenzylacyl-diphenylphosphine oxide, 1-hydroxy-cyclohexyl-phenyl-methanone, and 2-hydroxy-methylphenyl propane-1-one.
10. A printed article made from the photocurable inkjet ink according to any one of claims 1 to 9.
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| CN112358766A (en) * | 2020-11-26 | 2021-02-12 | 深圳市墨库图文技术有限公司 | UV ink-jet ink and preparation method thereof |
| CN112662229A (en) * | 2020-12-15 | 2021-04-16 | 深圳市墨库图文技术有限公司 | Scratch-resistant neutral UV ink and preparation method and application thereof |
| CN113321967A (en) * | 2021-06-07 | 2021-08-31 | 深圳市墨库图文技术有限公司 | UV ink, preparation method thereof and UV ink coating |
| WO2022234290A1 (en) * | 2021-05-07 | 2022-11-10 | Fujifilm Speciality Ink Systems Limited | Printing ink |
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| CN108603059A (en) * | 2016-02-05 | 2018-09-28 | 阪田油墨股份有限公司 | Photocurable ink composition for inkjet printing |
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