CN102051088A - White ink composition for ultraviolet curing ink jet recording and ink jet recording method - Google Patents
White ink composition for ultraviolet curing ink jet recording and ink jet recording method Download PDFInfo
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- CN102051088A CN102051088A CN201110004682XA CN201110004682A CN102051088A CN 102051088 A CN102051088 A CN 102051088A CN 201110004682X A CN201110004682X A CN 201110004682XA CN 201110004682 A CN201110004682 A CN 201110004682A CN 102051088 A CN102051088 A CN 102051088A
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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
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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
- C09D11/02—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
Abstract
The invention relates to a white ink composition for ultraviolet curing ink jet recording and an ink jet recording method using the ink composition, wherein the ink composition comprises the following components in mass percent: 9-22% of titanium dioxide pigment, 2-15% of prepolymer, 50-79% of activated monomer, 4-9% of deep curing photoinitiator, 3-10% of surface curing photoinitiator, 0.2-2% of silane coupling agent, 0.2-1% of surface flow control agent and 1-5% of dispersing agent, wherein the activated monomer at least contains an olefinic acrylamide compound with a single function group, and the olefinic acrylamide compound with a single function group accounts for 20-40% of the total mass of the ink composition; and the mass ratio of the deep curing photoinitiator to the surface curing photoinitiator is 0.4:3. The invention has the advantages of meeting the industrialized ink jet printing requirements of flexible circuit boards, and the like.
Description
Technical field
The present invention relates to a kind of ink-vapor recording that is used for white ink composition and a kind of ink jet recording method, carry out ultraviolet light polymerization white ink composition and the ink jet recording method that character is printed especially for beating assembling device with ink-jet on the flexible PCB surface.
Background technology
Flexible PCB is to be a kind of flexible printed circuit with height reliability that base material is made with polyimide or polyester film, is called for short soft board or FPC, has distribution density height, short and small characteristics such as frivolous.FPC is mainly used in products such as mobile phone, notebook computer, PDA, digital camera, LCM, and components and parts installation site printed character that usually need be on FPC is so that the sign of checking as subsequent installation or as the mark of maintenance.The printing process of conventional flex circuits plate character is: usefulness laser drawing machine is drawn the film, shines on the half tone (to obtain the character half tone) again, uses the half tone silk-screen to the flexible circuit plate substrate legend ink again.This figure transfer technology based on photographic plat, not only the cost height, operation is many, the cycle is long, and the graph position degree size deviation that forms is big, quality problems such as the handwriting is blurred, lines defectiveness, ghost image can appear in the character that often causes printing.
Spray ink Printing is a kind of contactless printing, do not need forme, by good figure of Computerized Editing and literal, and control inkjet printer head injection ink droplet obtains accurate image, be the process of digitalized image fully, have print on demand, at a high speed, advantage such as high quality, color be saturated, can effectively solve the problems of the technologies described above.But because the FPC size is short and small, need higher print resolution, littler injection ink droplet quantity, therefore general spray ink Printing can not satisfy its industrialization printing requirement.
UV-light (UV) ink-jet combines the advantage separately of inkjet technology and UV curing technology, existing inkjet technology in the use with operational facility, have again the UV curing technology economically with technical advantage.For carry out the white characters printing on non-white low key tone base material for, having proposed to use good white pigments such as hidden power, tinting strength, chemical resistant properties in tinting material is the UV curable ink jet recording ink composite of titanium oxide.Disclose a kind of uv-curing type ink jet record as, No. 03147078.5 Chinese invention patent application and use white ink composition, contain titanium oxide, have macromolecule dispersing agent, optical polymerism compound and the Photoepolymerizationinitiater initiater of basic functionality.It is handled by using silicon-dioxide and aluminum oxide that titania surface is carried out modification, macromolecule dispersing agent treated side, that contain basic functionality that silicon-dioxide on titanium peroxide is produced is adsorbed securely, therefore can keep the decentralized stabilization effect for a long time.But the above-mentioned common price of titanium dioxide through silicon-dioxide and alumina surface processing is comparatively expensive, therefore uses such titanium dioxide will certainly increase the production cost of printing ink.In addition, though above-mentioned printing ink in aspect excellent propertys such as dispersiveness, anti-settleabilities, may not fully satisfy the needs of FPC spray ink Printing at aspects such as hygrometric state sticking power, curing performance and printing fluencies.
In order to obtain even more ideal character effect, also satisfy the large-scale production of FPC simultaneously, be necessary to develop a kind of new white UV and solidify composition for ink jet recording.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of new white UV and solidifies composition for ink jet recording; have excellent opacifying power, hygrometric state sticking power, curing performance and print smooth performance; can be on FPC the spray ink Printing white characters, and can satisfy the FPC needs of scale production.
For solving the problems of the technologies described above, technical scheme provided by the invention is: ultraviolet light polymerization ink-vapor recording white ink composition comprises by mass percentage: TiO 2 pigment 9%-22%; Prepolymer 2%-15%; Reactive monomer 50%-79%; Deep layer is solidified light trigger 4%-9%; Light trigger 3%-10% is solidified on the top layer; Silane coupling agent 0.2%-2%; Planarization agent 0.2%-1%; Dispersion agent 1%-5%; Wherein, comprise a kind of olefinic acrylamides of simple function group in the reactive monomer at least, and the olefinic acrylamides of simple function group accounts for the 20-40% of ink composite total mass; The mass ratio that deep layer is solidified light trigger and top layer curing light trigger is 0.4-3.
The above-mentioned ultraviolet light polymerization ink-vapor recording of the present invention uses silane coupling agent, single official to roll into a ball olefinic acrylamides, acylphosphine oxide photoinitiator and alpha-alcohol ketone photoinitiator with white ink composition by choose reasonable; and determine the consumption of each component in the ink composite by the science of studying for a long period of time; make composition for ink when having good opacifying power, have good sticking power, reactive behavior, fluency and curing performance concurrently; thereby can be suitable for quick, in enormous quantities spray ink Printing, satisfy the needs of flexible PCB industrialization spray ink Printing.For example, the ultraviolet light polymerization ink-vapor recording is the 9%-22% that accounts for the ink total mass with the consumption of TiO 2 pigment in the white ink composition, if consumption is less than 9% of ink total mass, the white characters opacifying power that then prints can be very low, the needs of flexible PCB industrialization spray ink Printing can not meet the demands, if consumption is greater than 22% of ink total mass, the opacifying power of ink is not had tangible raising again on the one hand, on the other hand because resin-pigment ratio is too big, can make the easy conglomerate of TiO 2 pigment, increase the probability of plug nozzle, thereby reduced the smooth performance of printing of ink; By using silane coupling agent, can make the ultraviolet light polymerization ink-vapor recording have better hygrometric state sticking power with white ink composition and flexible circuit plate substrate, improve the scuff resistance of ultraviolet light polymerization ink-vapor recording with white ink composition; Solidify light trigger and top layer curing light trigger by the different deep layer of use effect simultaneously, and suitably adjust the ratio between the two, can make the ultraviolet light polymerization ink-vapor recording all comparatively desirable with the integrally curing performance of white ink composition.If only use deep layer curing light trigger or top layer to solidify light trigger separately, then the ultraviolet light polymerization ink-vapor recording is very poor with the deep layer or the top layer solidification effect of white ink composition.If solidifying with the top layer of white ink composition greater than 3 ultraviolet light polymerization ink-vapor recordings, the amount ratio of deep layer curing light trigger and top layer curing light trigger also can show variation; Will variation if this ratio solidifies less than the deep layer of 0.4 ink; By in reactive monomer, using the simple function group olefinic acrylamides of appropriate amount, the requirement that can make the ultraviolet light polymerization ink-vapor recording all more meet high precision UV type printer with the viscosity and the reactive behavior of white ink composition.The applicant is by the discovery that studies for a long period of time, and the viscosity of ink composite and reactive behavior are more responsive to the consumption of the olefinic acrylamides of simple function group.Generally speaking, the olefinic acrylamides consumption of simple function group is big more, and the reactive behavior of ink is low more, and consumption is few more, and the viscosity of ink is high more.The quality of the olefinic acrylamides by selecting simple function group accounts for the 20-40% of ultraviolet light polymerization ink-vapor recording with the white ink composition total mass, can make the ultraviolet light polymerization ink-vapor recording promptly have the sound response activity, have good printing fluency again with white ink composition.
One of preferred version of the present invention is that silane coupling agent is selected from has general formula Y (CH
2)
nSi (OCH
3)
3Compound, the Y in the general formula is amino or epoxy group(ing).Under the condition that water exists, has general formula Y (CH
2)
nSi (OCH
3)
3Silane coupling agent be a kind of bifunctional organosilane that has silica-based and active amino of hydrolyzable inorganic methoxyl group or epoxy functionality, wherein methoxyl group is silica-based can hydrolysis produce active silanol groups, can make the active group of ink, form bonding as hydroxyl, carboxyl etc. at flexible parent metal surface and substrate surface; Amino or cycloalkyl groups then can react with the organic polymer material in the ink, thereby improve the hygrometric state sticking power between ink composite and the base material.
Another preferred scheme of the present invention is that silane coupling agent is N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan or γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, and the hygrometric state sticking power between ink and the base material is significantly improved.
Another preferred scheme of the present invention is, deep layer is solidified light trigger and is selected from the acylphosphine oxide photoinitiator one or more; Top layer curing light trigger is selected from one or more in the alpha-alcohol ketone photoinitiator.The common ground of acylphosphine oxide photoinitiator and alpha-alcohol ketone photoinitiator is xanthochromia not to take place, thereby yellowing phenomenon unsatisfactory appears in the white characters after can avoiding solidifying.
Another preferred version of the present invention is: the acylphosphine oxide photoinitiator is selected from two (2,4,6-Three methyl Benzene formyl) phenyl phosphine oxides, 2,4,6-Three methyl Benzene formyl diphenyl phosphine oxide; Described alpha-alcohol ketone photoinitiator is selected from 1-hydroxyl-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2-hydroxyl-1-{4-[4-(2-hydroxy-2-methyl-propyl group)-benzyl]-phenyl }-2-methyl isophthalic acid-acetone.
Another preferred scheme of the present invention is, by the ink total amount, the ultraviolet light polymerization ink-vapor recording comprises the single functionality monomer of 20-60%, the difunctionality monomer of 0-40%, three-functionality-degree or the monomeric mixture of polyfunctionality of 0-10% with the reactive monomer in the white ink composition.Reactive monomer has the viscosity of adjustment ink composite and the effects such as solidification rate of system, and above-mentioned preferred scheme can be optimized the rheological property and the curing performance of ink composite by the composition of choose reasonable reactive monomer.
Another preferred scheme of the present invention is that the quality of simple function group olefinic acrylamides accounts for the 25-35% of ultraviolet curing ink total mass in the ultraviolet light polymerization white characters ink.Simple function group olefinic acrylamides can be selected N-caprolactam, N,N-DMAA, N, N-diethyl-2-acrylamide, N-vinyl formamide, N, one or more in the N-dipropyl acrylamide.
Another preferred version of the present invention is that the acylphosphine oxide photoinitiator accounts for the 4%-9% of ink total mass; The alpha-alcohol ketone photoinitiator accounts for the 3%-10% of ink total mass, and the mass ratio of acylphosphine oxide photoinitiator and alpha-alcohol ketone photoinitiator is 0.5-2.5, and at this moment, the dark curing performance of ink is the most stable, good.
Ultraviolet light polymerization ink-vapor recording of the present invention is the 3-10 centipoise with the viscosity of white ink composition under 25 ℃ of conditions, even can reach the 4-7 centipoise, and fluency is very good.It can be used for spraying ink droplet minimum volume amount below 3 skins are long, and print resolution is on the UV inkjet-printing device more than the 1200dpi.Base material as the flexible PCB of stock can be Kapton (Kapton), polyethylene terephthalate (PET) film, aramid fiber paper (Nomex paper) film and polyvinyl chloride (PVC) film, can also be liquid crystalline polymers (liquid crystal polymer is called for short LCP) film and polyether-ether-ketone (PEEK) film etc.
Another technical problem that the present invention will solve provides a kind of ink jet recording method, uses white UV to solidify composition for ink jet recording spray ink Printing white characters on FPC, and can satisfy the FPC needs of scale production.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of ink jet recording method is characterized in that comprising the steps:
Steps A: a kind of ultraviolet light polymerization ink-vapor recording white ink composition is provided, comprises by mass percentage:
TiO 2 pigment 9%-22%;
Prepolymer 2%-15%;
Reactive monomer 50%-79%;
Deep layer is solidified light trigger 4%-9%;
Light trigger 3%-10% is solidified on the top layer;
Silane coupling agent 0.2%-2%;
Planarization agent 0.2%-1%;
Dispersion agent 1%-5%;
Wherein, comprise a kind of olefinic acrylamides of simple function group in the described reactive monomer at least, and the mass percentage content of the olefinic acrylamides of described simple function group is 20-40%;
The mass ratio that described deep layer is solidified light trigger and described top layer curing light trigger is 0.4-3;
Step B: use the UV ink-jet printer, the ink droplet jet that the minimum volume amount is risen for the 2-30 skin is to the flexible PCB substrate surface;
Step C: the ultraviolet light polymerization ink-vapor recording that will be ejected into the flexible PCB substrate surface with UV-light solidifies with white ink composition.
Below in conjunction with embodiment the present invention is described in detail.
Each percentages of ingredients of mentioning below reaching more than the present invention is mass percent, except that specified otherwise, all is the per-cent of this ingredients constitute ultraviolet light polymerization ink-vapor recording with the white ink composition total mass.
Ultraviolet light polymerization ink-vapor recording of the present invention can prepare by the method that may further comprise the steps with white ink composition:
1, prepare material:
In the ink composite total mass, form the preparation material by following mass percent:
TiO 2 pigment 9%-22%;
Prepolymer 2%-15%;
Reactive monomer 50%-79%;
Deep layer is solidified light trigger 4%-9%;
Light trigger 3%-10% is solidified on the top layer;
Silane coupling agent 0.2%-2%;
Planarization agent 0.2%-1%;
Dispersion agent 1%-5%;
Wherein, comprise a kind of olefinic acrylamides of simple function group in the reactive monomer at least, and the olefinic acrylamides of simple function group accounts for the 20-40% of ink composite total mass;
The mass ratio that deep layer is solidified light trigger and top layer curing light trigger is 0.4-3.
2, preparation stock white
To grind after TiO 2 pigment, the reactive monomer that accounts for reactive monomer total amount 3%-8%, the prepolymer that accounts for prepolymer total amount 10%-50% and the dispersant, to particle mean size less than 0.2um, obtain the stock white of high density.
3, the ink composition that makes up oil
Leftover materials are joined the stock white that obtains from step 2, use high speed dispersor JSF-450, be stirred to 400-1000 rev/min rotating speed and mix, the membrane filtration with aperture 1.0-1.2 μ m obtains ultraviolet light polymerization ink-vapor recording white ink composition.
Among the present invention, TiO 2 pigment can select to use this area TiO 2 pigment commonly used, and not only raw material is easy to get, and low price, and cost is low.Preferred glossiness height, opacifying power significantly, the rutile titanium dioxide pigment of strong coloring force and good weatherability, as Dupont TiO 2 pigment: R-706, R-900, R-902+, R-960, R-931, R102, R-103, R104, R105, R108, R350; Mei Lilian TIONA595, R-CL69; The former TiO 2 pigment CR-90-2 of stone, CR-60-2, CR-57; Special promise TiO 2 pigment CR-828, CR-826.Preferably, the quality of rutile titanium dioxide pigment accounts for the 11-18% of ultraviolet light polymerization ink-vapor recording with the white ink composition total mass.
Ultraviolet light polymerization ink-vapor recording of the present invention can be selected the acrylate of high reaction activity with the prepolymer in the white ink composition, and curing speed is fast, solvent resistance is good, snappiness is good, characteristics such as wear resisting property height because of it has.Usually under the property condition, the principle of selecting acrylic ester prepolymer is that the low viscous high reaction activity and high that also has is simultaneously arranged, the commercial prod that can list has CN2302, CN2301 that Sartomer produces, CN2300, CN2279, CN549, CN292, CN9251 etc., the 6361-100 of Changxing Chemical Industry Co Ltd, 6362-100,6320,6325-100, the GENOMER 3364,1122 of RAHN company etc.Preferably, the high reaction activity acrylate accounts for the 2-15% of ink gross weight, and consumption is big, and it is big that the viscosity of ink can become; Consumption is few, and the reaction work of ink is can falling property low.
Ultraviolet light polymerization ink-vapor recording of the present invention can be single functionality monomer, difunctionality monomer, three-functionality-degree or the monomeric mixture of polyfunctionality with the reactive monomer in the white ink composition.Preferably, the single functionality monomer can account for the 20%-60% of ink total mass; The difunctionality monomer can account for the 0-40% of ink total mass; Three degree energy degree or polyfunctionality monomer can account for the 0-10% of ink total mass.Wherein the single functionality monomer comprises the simple function group olefinic acrylamides that accounts for ink composite total mass 20-40%, more preferably 25-35% at least.Simple function group olefinic acrylamides can be N-caprolactam, N,N-DMAA, N, N-diethyl-2-acrylamide, N-vinyl formamide, N, one or more in the N-dipropyl acrylamide.
Other single functionality monomer in the ink composite of the present invention except that simple function group olefinic acrylamides can also be selected from the 2(2-ethoxy ethoxy) ethyl propylene acid esters (EOEOEA), tetrahydrofuran (THF) propylene ester acid esters (THFA), lauryl acrylate (LA), isodecyl acrylate, Isooctyl acrylate monomer, tridecyl acrylate, isobornyl acrylate (IBOA), 2-phenoxyethyl acrylate (2-PEA), 4-hydroxy butyl vinyl ether (HBVE), allyl group ethylene glycol, N, dinethylformamide, N-vinyl hexyl propionamide, N, the N-DMAA, N, N-dipropyl acrylamide, N, N-diethyl-2-acrylamide, in N-vinyl-2-Pyrrolidone (NVP) one or more.
Ultraviolet light polymerization ink-vapor recording of the present invention can be selected from tri (propylene glycol) diacrylate (TPGDA) with difunctionality monomer in the white ink composition, propoxylation (2) neopentylglycol diacrylate (PO-NPGDA), propylene glycol diacrylate (DPGDA), neopentylglycol diacrylate (NPGDA), 1,6-hexanediyl ester HDDA, ethoxylation 1.6 hexanediyl fat (EO-HDDA), 1,4 butanediol diacrylate (BDDA), polyoxyethylene glycol (200) double methacrylate PEG (200) DA, triethylene glycol divinyl ether (DVE-3).
Ultraviolet light polymerization ink-vapor recording of the present invention can be dipentaerythritol five/six acrylate (DPHA), Viscoat 295 (TMPTA), ethoxylated trimethylolpropane triacrylate (EO-TMPTA), pentaerythritol triacrylate, propoxylation Viscoat 295 PO-TMPTA, tetramethylol methane tetraacrylate (PETA) with three-functionality-degree in the white ink composition and polyfunctionality monomer.
The contained light trigger of ultraviolet light polymerization white characters ink of the present invention comprises light trigger A and photoinitiator b.Wherein, light trigger A helps character ink deep layer solidified deep layer to solidify light trigger, in the preferred acylphosphine oxide photoinitiator one or more, adducible acylphosphine oxide photoinitiator is as the Genocure LTM of the Irgacure819 of CIBA company, the LucerinTPO of BASF AG, RAHN AG company; Photoinitiator b is to help solidified top layer, character ink top layer to solidify light trigger, in the preferred alpha-alcohol ketone photoinitiator one or more, adducible alpha-alcohol ketone photoinitiator is as the Irgacure184 of CIBA company, Irgacure1173, Irgacure127.Though light trigger A is different with the photoinitiator b effect, it is exactly xanthochromia not to take place that a common ground is arranged, thereby yellowing phenomenon unsatisfactory appears in the white characters after causing solidifying.In order to make the ultraviolet light polymerization ink-vapor recording good curing performance be arranged with white ink composition, the quality of light trigger A and B than scope between 0.4-3, preferred 0.5-2.5.If this ratio will show very poor greater than 3 ultraviolet light polymerization ink-vapor recordings with the curing of the top layer of white ink composition; If this ratio solidifies and will perform poor with the deep layer of white ink composition less than 0.4 ultraviolet light polymerization ink-vapor recording.The quality of initiator A can account for the 4%-9% of ultraviolet light polymerization ink-vapor recording with the white ink composition total mass in the present invention; The quality of initiator B can account for the 3%-10% of ultraviolet light polymerization ink-vapor recording with the white ink composition total mass.
Ultraviolet light polymerization ink-vapor recording of the present invention can be N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan with the silane coupling agent in the white ink composition, as Dynasylan DAMO-T, the Z-6020 of DOW CORNING, the Japanese KBM-603 of SHIN-ETSU HANTOTAI, the U.S. connection carbon A-1122 of Degussa; Or γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, as the Z-6040 of DOW CORNING, the Japanese KBM-403 of SHIN-ETSU HANTOTAI, U.S. connection carbon A-187.
Ultraviolet light polymerization ink-vapor recording of the present invention can also comprise one or more dispersion agents with white ink composition, can shorten milling time like this and improve the stability of ultraviolet light polymerization ink-vapor recording with white ink composition.The dispersion agent commodity that can list comprise: the Disperbyk-111 of the Bi Ke study of Confucian classics, 162,163,168; The Solsperse32000 of Lu Borun, 32500,36000,39000; The EFKA Addities4310,4330,4030 of EFKA; The Dispers710 of Degussa, 685,655.Preferably, the quality of dispersion agent can account for the 1-5% of ultraviolet light polymerization ink-vapor recording with the white ink composition total mass.
Ultraviolet light polymerization ink-vapor recording of the present invention can also comprise one or more planarization agents of 0.2-1% with white ink composition, can make ultraviolet light solidified ink that good flowing property is arranged and the flexible circuit plate substrate is had good product wettability.The commodity that can list have the high TEGO RAD of enlightening 2100,2250,2200; The BYK333 of Bi Ke chemistry, 377, UV3500.
Ultraviolet light polymerization ink-vapor recording of the present invention can also comprise the stablizer of 0.1-0.5% with white ink composition, can improve the package stability of ink, and adducible commodity have GENORAD 20, the GENORAD18 of RAHN; Cyanogen spy's S100, S110, S210, S130.
Ultraviolet light polymerization ink-vapor recording of the present invention can carry out white characters with the UV inkjet-printing device with white ink composition on the flexible circuit plate substrate prints, and specifically can comprise the steps:
A, provide a kind of ultraviolet light polymerization ink-vapor recording white ink composition of the present invention;
B, use the UV inkjet-printing device, the ink droplet jet that the minimum volume amount is risen for the 2-30 skin is to the flexible PCB substrate surface;
C, the printing ink that will be ejected into the flexible PCB substrate surface with UV-light solidify to compound.
Preferably, the ink droplet minimum volume amount that used UV inkjet-printing device sprays is below 3 skins rise, and the resolving power of spray printing is more than the 1200dpi.
Preferred, used UV inkjet-printing device can also comprise:
1, flexible circuit board substrate had stationary installation;
2, accurate X-Y running gear;
3, the printhead that has accurate location and function of regulating height thereof;
4, ultraviolet light polymerization device;
5, add China ink and can make ink produce the round-robin device automatically;
6, printhead cleans and attending device.
Embodiment
Below describe the present invention in detail by specific embodiment, but the present invention is not limited thereto.
Press mass percent shown in the table one and form the ultraviolet light polymerization ink-vapor recording white ink composition of preparation embodiment 1-4 and comparative example 1-4:
Test:
1, viscosity test:
Use the Brookfield viscometer to measure the viscosity of embodiment 1-4, Comparative Examples 1-6 ultraviolet light polymerization ink-vapor recording usefulness white ink composition under 25 ℃ of conditions, measurement result specifically sees Table two.
2, curing performance test:
Get respectively embodiment 1-4, Comparative Examples 1-6 ultraviolet light polymerization ink-vapor recording with white ink composition with the specific character of grand magnificent UV1612S ultraviolet light polymerization type printer output, touch with hand then, judge curing performance, index is as follows:
Surface drying is bad: the sticking hand in character surface;
Deep layer is solidified bad: the character surface is tack-free, but lower floor is softer;
Excellent: the surface is dry and comfortable, and lower floor does not feel like jelly.
3, print the fluency test
Get embodiment 1-4, Comparative Examples 1-6 ultraviolet light polymerization ink-vapor recording white ink composition 200ml respectively, carry out monochromatic piece printing test on grand magnificent UV1612S ultraviolet light polymerization type printer, concrete test result sees Table two.
Evaluation index:
A: use up from beginning to be printed to 200 ml ink composites, white line do not occur;
B:200 ml ink composite has not been beaten as yet, white line occurs;
C: can't finish print out task.
4, the test of hygrometric state sticking power:
Get embodiment 1-4 respectively, Comparative Examples 1-6 ultraviolet light polymerization ink-vapor recording is printed specific character with white ink composition with grand magnificent UV1612S ultraviolet light polymerization type printer on polyethylene terephthalate (PET) film, with immersion under the character model room temperature after solidifying 24 hours, be bonded on the writing with the 3M adhesive tape then, firmly pull, at same place, pull 3 times repeatedly and survey sticking power:
Excellent----writing does not have and comes off
Writing comes off difference----in a large number.
5, writing resolving power test:
Adopt visual method to judge that judgement criteria is as follows:
Clear: the writing clear-cut margin, the small characters of output is distinguished easily;
Fuzzy: there is the diffusion of coloring matter at the writing edge, and the small characters of output can't be distinguished.
The ultraviolet light polymerization ink-vapor recording white ink composition of table one embodiment 1-4 and comparative example 1-4
Table two test result
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 |
| Viscosity (centipoise/25 ℃) | 5.2 | 5.8 | 6.2 | 5.5 | 5.2 | 6.8 | 5.6 | 5.9 | 11.2 | 5.5 |
| Curing performance | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent | Surface drying is bad | Deep layer is solidified bad | Excellent | Excellent |
| Print fluency | A | A | A | A | A | B | A | A | B | A |
| Hygrometric state sticking power | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent | Difference |
| The writing sharpness | Clear | Clear | Clear | Clear | Opacifying power is poor | Clear | Fuzzy | Fuzzy | Fuzzy | Clear |
As can be seen from Table II, the over-all properties of embodiment 1-4 ink composite is good, can satisfy the printing needs, and Comparative Examples 1-6 all has underproof performance perameter, can not satisfy the printing demand.
Claims (7)
1. ultraviolet light polymerization ink-vapor recording white ink composition, it is characterized in that: by mass percentage, described ink composite comprises:
TiO 2 pigment 9%-22%;
Prepolymer 2%-15%;
Reactive monomer 50%-79%;
Deep layer is solidified light trigger 4%-9%;
Light trigger 3%-10% is solidified on the top layer;
Silane coupling agent 0.2%-2%;
Planarization agent 0.2%-1%;
Dispersion agent 1%-5%;
Wherein, comprise a kind of olefinic acrylamides of simple function group in the described reactive monomer at least, and the content of the olefinic acrylamides of described simple function group is 20-40%;
The mass ratio that described deep layer is solidified light trigger and described top layer curing light trigger is 0.4-3.
2. ultraviolet light polymerization ink-vapor recording white ink composition according to claim 1 is characterized in that:
Described silane coupling agent is for having general formula Y (CH
2)
nSi (OCH
3)
3Compound, the Y in the general formula is amino or epoxy group(ing).
3. ultraviolet light polymerization ink-vapor recording white ink composition according to claim 2 is characterized in that:
Described silane coupling agent is N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan or γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane.
4. according to each described ultraviolet light polymerization ink-vapor recording white ink composition of claim 1 to 3, it is characterized in that:
Described deep layer curing light trigger is selected from one or more in the acylphosphine oxide photoinitiator; Described top layer curing light trigger is selected from one or more in the alpha-alcohol ketone photoinitiator.
5. ultraviolet light polymerization ink-vapor recording white ink composition according to claim 4 is characterized in that:
Described acylphosphine oxide photoinitiator is selected from two (2,4,6-Three methyl Benzene formyl) phenyl phosphine oxides, 2,4,6-Three methyl Benzene formyl diphenyl phosphine oxide; Described alpha-alcohol ketone photoinitiator is selected from 1-hydroxyl-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2-hydroxyl-1-{4-[4-(2-hydroxy-2-methyl-propyl group)-benzyl]-phenyl }-2-methyl isophthalic acid-acetone.
6. ultraviolet light polymerization ink-vapor recording white ink composition according to claim 4 is characterized in that:
Described reactive monomer further comprises single functionality monomer, difunctionality monomer, three-functionality-degree or polyfunctionality monomer, and wherein the monomeric content of single functionality is that 20-60%, the monomeric content of difunctionality are that the content of 0-40%, three-functionality-degree, polyfunctionality monomer or three-functionality-degree and the monomeric mixture of polyfunctionality is 0-10%.
7. an ink jet recording method is characterized in that comprising the steps:
Steps A: a kind of ultraviolet light polymerization ink-vapor recording white ink composition is provided, and by mass percentage, described ultraviolet light polymerization ink-vapor recording comprises with white ink composition:
TiO 2 pigment 9%-22%;
Prepolymer 2%-15%;
Reactive monomer 50%-79%;
Deep layer is solidified light trigger 4%-9%;
Light trigger 3%-10% is solidified on the top layer;
Silane coupling agent 0.2%-2%;
Planarization agent 0.2%-1%;
Dispersion agent 1%-5%;
Wherein, comprise a kind of olefinic acrylamides of simple function group in the described reactive monomer at least, and the content of the olefinic acrylamides of described simple function group is 20-40%;
The mass ratio that described deep layer is solidified light trigger and described top layer curing light trigger is 0.4-3;
Step B: use the UV ink-jet printer, the ink droplet jet that the minimum volume amount is risen for the 2-30 skin is to the flexible PCB substrate surface;
Step C: the ultraviolet light polymerization ink-vapor recording that will be ejected into the flexible PCB substrate surface with UV-light solidifies with white ink composition.
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| CN201110004682XA CN102051088A (en) | 2011-01-11 | 2011-01-11 | White ink composition for ultraviolet curing ink jet recording and ink jet recording method |
| PCT/CN2012/070061 WO2012094962A1 (en) | 2011-01-11 | 2012-01-05 | White ink composition for ultraviolet-cured ink-jet recording and ink-jet recording method |
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| CN201110004682XA CN102051088A (en) | 2011-01-11 | 2011-01-11 | White ink composition for ultraviolet curing ink jet recording and ink jet recording method |
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| CN102653650A (en) * | 2012-04-24 | 2012-09-05 | 东莞上海大学纳米技术研究院 | Ultraviolet-curable white character jet-ink and preparation method thereof |
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