CN102417760B - Radiation-curable ink-jet ink and preparation method thereof - Google Patents
Radiation-curable ink-jet ink and preparation method thereof Download PDFInfo
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- CN102417760B CN102417760B CN 201110372858 CN201110372858A CN102417760B CN 102417760 B CN102417760 B CN 102417760B CN 201110372858 CN201110372858 CN 201110372858 CN 201110372858 A CN201110372858 A CN 201110372858A CN 102417760 B CN102417760 B CN 102417760B
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Abstract
The invention discloses radiation-curable ink-jet ink and a preparation method thereof. The ink-jet ink comprises 5 to 25% of prepolymers, 60 to 85% of active monomers, 0.5 to 5% of pigments, 3 to 10% of a photoinitiator, 0.5 to 5% of a dispersant and 0.1 to 5% of other auxiliary agents. The preparation method comprises the following steps: mixing a part of the active monomers, the prepolymers and a hyperdispersant and carrying out uniform stirring so as to allow the hyperdispersant to dissolve and uniformly disperse in a mixture of the part of the active monomers and the prepolymers; adding the pigments and grinding the pigments on a grinding, stirring and dispersing multifunctional machine so as to obtain high concentration color paste of the dispersed pigments; adding the photoinitiator, the other auxiliary agents, the rest active monomers, etc., and carrying out dispersing by using an ultrasonic dispersing instrument; filtering the ink with an ultrafine filter screen so as to obtain the radiation-curable ink-jet ink. The radiation-curable ink-jet ink provided in the invention has excellent adhesion, wear resistance, chemical resistance and resistance to environmental testing, and can be directly used as surface ink for a plastic-rubber material without need for other coatings or protection layers.
Description
Technical field
The present invention relates to a kind of radiation-curable ink-jet ink and preparation method thereof; especially relate to a kind of radiation-curable ink-jet ink and preparation method who is applied to the plastic material surface; this jetted ink can carry out inkjet printing at the plastic cement products outside surface by digit inkjet printer; inkjet printing China ink layer directly uses as the top layer, no longer applies other coatings or protective layer.
Background technology
Ink jet printing is to penetrate ink flow on stock by the computer control nozzle, thereby obtain the mode of printing of writings and image, ink jet printing need not contact, need not pressure, need not forme, only needs canned data in the robot calculator is input to ink-jet printer, can control printing process.Ink jet printing also has the feature of variable information printing in addition.
Water-based and solvent-borne type jetted ink are present ink jet inks known and commonly used.Yet, it is tinting material that aqueous ink-jet inks generally adopts water-soluble dye, has the problems such as water dungeon degree, light fastness be poor, and its drying process of water color ink needs for a long time and energy simultaneously, its ground of undertaking the printing of must be the adsorbable class material of water, and the ground that can not adsorb for water then can't be suitable for.The rate of drying of solvent type ink, water dungeon degree, light fastness, thermostability, oxidative stability etc. have been compared many Optimalities with water color ink, but all there are the problems such as toxicity, inflammableness in most of solvent, does not meet environmental requirement.In the 3C electron trade; resistance, water tolerance, the ultraviolet resistance of the rear China ink layer of printing ink and curing are higher according to property, wear resistance and other relevant environment testbility demands; water-based and solvent-borne type jetted ink can't reach the correlated performance requirement, generally need to apply other coatings or protective layer at its jetted ink layer upper surface again.
The radiation curable ink-jet printing technology is mainly reflected in high speed printing, environmental protection, chemical-resistant, wear resistance, light permanency and the aspect such as the material scope of application widely as a kind of less energy-consumption, its significant advantage of free of contamination technology.Conventional UV jetted ink is used for plastic cement at present, especially the plastic cement of the crystallinity such as PP, PE, PET, low surface energy, generally need to carry out surface preparation to base material by methods such as flame, plasma etching or coronas, and after the UV jetted ink solidifies, do not have enough flexible meeting thick basement flexure or required extension when crooked, thereby cause solidify after ink lay dropping hammer, easily producing cracking when falling or drop.
Summary of the invention
The objective of the invention is to overcome general water-based, solvent-borne type jetted ink over-all properties is relatively poor; can not be as the direct applied shortcoming of plastic cement top layer printing ink; directly use in plastic cement products top layer printing ink and provide a kind of, no longer apply radiation-curable ink-jet ink of other coatings or protective layer and preparation method thereof.
A kind of radiation-curable ink-jet ink comprises prepolymer, reactive monomer, pigment, light trigger, dispersion agent and other auxiliary agents, and its weight percentage is respectively:
Described prepolymer is one or more the miscellany in urethane acrylate, polyester acrylate, the hyperbranched polyester acrylic ester.
Described reactive monomer is one or more the miscellany in single functionality monomer, difunctionality monomer and three-functionality-degree or the polyfunctionality monomer.
The reactive monomer of described single functionality is selected from (methyl) vinylbenzene, vinyl pyrrolidone, vinyl-acetic ester, (methyl) acrylate, vinylformic acid (different) monooctyl ester, vinylformic acid (different) butyl ester, Ethyl acrylate, (methyl) Hydroxyethyl acrylate, (methyl) Propylene glycol monoacrylate, the vinylformic acid hydroxy butyl ester, the 2-phenoxyethyl acrylate, dodecylacrylate, iso-bornyl acrylate, ethoxy ethoxy ethyl propylene acid esters, the tetrahydrofuran (THF) acrylate, 2-hydroxyethyl (methyl) acrylate phosphoric acid ester, N, the N-DMAA, acryloyl morpholine, the miscellany of one or more in N-butyl-1, the 2 acryloxy urethanum.
The reactive monomer of described difunctionality and polyfunctionality is selected from 1, the 4-butylene glycol diacrylate, 1,6 hexanediol diacrylate, O-phthalic acid diethylene glycol diacrylate, neopentylglycol diacrylate, ethoxylated neopentylglycol diacrylate, propylene glycol diacrylate, tripropylene glycol diacrylate, the propoxylation Viscoat 295, ethoxylated trimethylolpropane triacrylate, Viscoat 295, pentaerythritol triacrylate, the miscellany of one or more in the cyclopentenyl isocyanuric acid triacrylate.
Described pigment is one or more the miscellany in phthalein cyanogen pigment, quinacridone pigment, azo pigment, benzimidazolone pigment, the charcoal blacks.
Described light trigger is selected from 2-hydroxy-2-methyl-1-phenyl-acetone; 1-hydroxyl-cyclohexyl benzophenone; 2-methyl isophthalic acid-(4-first sulfydryl phenyl)-2-morpholine-1-acetone; 2-benzyl-2; 2-dimethylamino-1-(4-morpholinyl phenyl)-the 1-butanone; 2; 2-dimethoxy-2-phenyl methyl phenyl ketone; 2; 4; 6-trimethylbenzoyl-diphenyl phosphine oxide; 2; 4; 6-trimethylbenzoyl phenyl-phosphonic acid ethyl ester; phenyl two (2; 4,6-trimethylbenzoyl) phosphine oxide; benzophenone; Michler's keton; isopropyl thioxanthone; the salt compounded of iodine light trigger; the sulfonium salt photoinitiator initiator; the iron arene light trigger; the 4-dimethyl ethyl aminobenzoate; the miscellany of one or more in the aliphatic tertiary amine of acroleic acid esterification.
Described hyper-dispersant is the hyper-dispersant with anchor formula group and solvent chain.
The preparation method of described radiation-curable ink-jet ink comprises the steps:
1) part reactive monomer, prepolymer and hyper-dispersant are mixed and stir, make the hyper-dispersant dissolving and be evenly dispersed in the mixture of partial monosomy and prepolymer;
2) adding pigment is grinding, is stirring, is disperseing multi-purpose machine to grind the pigment dispersion color paste that obtains higher concentration;
3) add again light trigger, other auxiliary agents, remaining activity monomer etc., and disperse with the ultra-sonic dispersion instrument;
4) with ultra-fine filter screen printing ink is filtered at last, can obtain radiation curable ink jet inks.
Radiation-curable ink-jet ink provided by the invention has good tack, wear resistance, chemical proofing and anti-environmental testing performance, can be used as 3C electron-like plastic cement products top layer printing ink and directly uses, and no longer applies other coatings or protective layer.
When radiation-curable ink-jet ink provided by the invention directly used as top layer printing ink, its China ink layer performance satisfied the correlated performance test of 3C electronic product.
Embodiment:
For more detailed description summary of the invention of the present invention, further specify below in conjunction with specific embodiment.
Embodiment 1
Weight percentage is respectively:
Part reactive monomer, prepolymer and hyper-dispersant are mixed and stir, make the hyper-dispersant dissolving and be evenly dispersed in the mixture of partial monosomy and prepolymer; Adding pigment is grinding, is stirring, is disperseing multi-purpose machine to grind the pigment dispersion color paste that obtains higher concentration; Add again light trigger, other auxiliary agents, remaining activity monomer etc., and disperse with the ultra-sonic dispersion instrument; With ultra-fine filter screen printing ink is filtered at last, can obtain radiation curable ink jet inks.
Process of lapping uses is that the SDF-400 of Shandong dragon Xinghua worker machinery Group Co.,Ltd grinds, stirs, disperses multi-purpose machine, and milling time is 2～20 hours, is stirred under 7000 rev/mins the rotating speed to carry out; Dispersion process is to analyse the DS-2510DTH ultra-sonic dispersion instrument that ultrasonic instrument company limited produces with the Shanghai life, and jitter time is 30～60 minutes.Pigment red 122 belongs to quinacridone pigment, and dispersion agent SOLSPERSE32000 is produced by U.S. Lu Borun petrochemical corporation (complex).Test result sees Table 2.
Embodiment 2
The radiation-curable ink-jet ink weight percentage is respectively:
By making radiation-curable ink-jet ink with embodiment 1 same preparation method, test result sees Table 2.
Case study on implementation 3-5 sees Table 1, can make the radiation-curable ink-jet ink of cyan, yellow and black, and the preparation method is with embodiment 1.
The embodiment 3-example 5 of table 1 cyan, yellow and black
Wherein, described pigment particle size is 0.02～1 μ m, preferred 0.1-0.7 μ m, more preferably 0.2-0.5 μ m.The viscosity of radiation-curable ink-jet ink is 10～50mPas, and its surface tension is 20～50dynes/cm.
Table 2 is the test result of embodiment 1～5:
The test result of table 2. embodiment 1～5
In the above-mentioned test:
1. viscosity test adopts NDJ-8S digital display rotary viscosity measuring.
2. the OCA15EC video optics contact angle measurement test of the German Dataphysics of surface tension test employing company.
3. anti-makeup test: sunscreen is applied on the specimen China ink layer with writing brush, normal temperature is placed and to be gone to after 10 minutes in temperature is that 80 ℃, humidity are that 80% constant temperature and humidity machine is placed, after 24 hours test sample is taken out, wash sunscreen off, dry, normal temperature places after 4 hours, draw the chess lattice with the 2mm spacing on sample China ink layer, the vertical direction brute force is drawn 1 time after pasting with the test gummed paper again.
4. anti-damping fluid test: the buffered soln that specimen is put into pH=4.6 is placed after 48 hours and is taken out, and washes, dries, normal temperature places after 4 hours, draws the chess lattice with the 2mm spacing on sample China ink layer, pastes rear vertical direction brute force with the test gummed paper again and draws 1 time.
5. hundred lattice test: draw chess lattice with 1mm spacing intersection with icking tool on sample China ink layer first, the vertical direction brute force is drawn 3 times after pasting with the test gummed paper again, and obscission can not be arranged.
6.RCA wear-resisting test: specimen is positioned on the RCA wear testing machine, apply 275g gravity at paper tape, paper tape comes and goes/minute speed commute friction sample China ink layer with 33 times, rub come and go for 30 times after sample China ink layer can not have and come off or the heavy wear phenomenon, can not expose the base material of China ink layer lower floor.
7. resistance test: specimen is positioned on the trier, periodically adding alcohol makes it keep humidity, apply under the 500g gravity condition with 40 times at the test eraser and to come and go/minute speed commutes friction sample China ink layer, rub come and go for 250 times after the sample China ink layer can not have and to come off or the heavy wear phenomenon.
8. brine spray test: it is 35 ℃, the brine spray experimental machine of the environment of 5%NaCl that specimen is put into temperature, place take out after 72 hours, wash, dry, normal temperature places after 4 hours, draw the chess lattice with the 2mm spacing on sample China ink layer, the vertical direction brute force is drawn 1 time after pasting with the test gummed paper again.
9. ultraviolet ray test: after half of specimen sheet covered with black belt, the specimen sheet is placed placement taking-up after 72 hours in 20cm position under the ultraviolet test lamp, normal temperature was placed after 4 hours, draw the chess lattice with the 2mm spacing on sample China ink layer, the vertical direction brute force is drawn 1 time after pasting with the test gummed paper again.
10. thermal shock test: specimen is put into the thermal shock experiment machine, the control temperature is-40 ℃ and places after 2 hours, the control temperature is 85 ℃ and placed 2 hours, so repeatedly place after 72 hours and take out, normal temperature was placed after 4 hours, draw the chess lattice with the 2mm spacing on sample China ink layer, the vertical direction brute force is drawn 1 time after pasting with the test gummed paper again.
The test 11. drop hammer: with 500G weight steel ball from 50CM height free-falling impact test sample China ink layer 6 times.
12. pencil hardness test: with the board UNIF of Mitsubishi type pencil, loading 1000g counterweight, pencil-lead and ink film face angle at 45 °, pencil-lead comes and goes 5 times and comes and goes miles of relative movement at every turn at ink film is 10mm.
Determinating reference:
1), the front/rear specimen of experiment China ink layer can not have fade, variable color, be full of cracks, bubble, come off, the scarce limit of distortion etc. and referred to give as security the scratch phenomenon;
2) specimen China ink layer can not have drop (lacking limit: when 2/3 above area of chess lattice drops) after, gummed paper was pasted.
Claims (1)
1. a radiation-curable ink-jet ink is characterized in that, remembers by weight percentage, and is composed of the following components:
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Address after: 523878 Changan City, Guangdong Province town on the corner management area Patentee after: Guangdong wins smart group Limited by Share Ltd Address before: 523878 Changan City, Guangdong Province town on the corner management area Patentee before: Dongguan Janus Precision Components Co., Ltd. |
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Address after: Shangjiao village, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Guangdong Chuangshi Intelligent Equipment Group Co.,Ltd. Address before: 523878 corner management area, Changan Town, Guangdong, Dongguan Patentee before: GUANGDONG JANUS INTELLIGENT GROUP Corp.,Ltd. |