CN103540183B - Touch screen anti-fingerprint transparent hardened film - Google Patents
Touch screen anti-fingerprint transparent hardened film Download PDFInfo
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- CN103540183B CN103540183B CN201310515788.5A CN201310515788A CN103540183B CN 103540183 B CN103540183 B CN 103540183B CN 201310515788 A CN201310515788 A CN 201310515788A CN 103540183 B CN103540183 B CN 103540183B
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Abstract
A kind of touch screen anti-fingerprint transparent hardened film, this transparent hardened film includes transparent support and is arranged on the transparent hard-coating layer of transparent support surface, described transparent hard-coating layer surface distributed has mean diameter to be 0.1～0.9 μm of particle, and is highly the projection of 0.1～0.9 μm in the formation of transparent hard-coating layer surface. The present invention utilizes the microprotrusion on hardened layer surface to disperse the moisture in fingerprint and oils and fats, and anti-fingerprint pollution effects is notable, and light transmittance is high, and adhesion strength is excellent, can be widely applied to screen protection field.
Description
Technical field
The present invention relates to display technology field, particularly to touch screen anti-fingerprint transparent hardened film.
Background technology
Universal along with panel computer and large-size screen monitors smart mobile phone, touch screen is widely used in every field. And in the process using touch screen, owing to often catching tactile screen operator, it is easy to besmirch or scratch touch screen. Now very common method is the effect that the cured film that patch last layer ultraviolet (UV) solidifies outside touch screen plays protection screen. Although the hard conating of cured film has significantly high hardness, it is possible to play the effect of protection, but be easy to be besmirched by fingerprint.
In order to solve fingerprint pollution problem, known technology is the surface energy being reduced film by interpolation organosilicon or fluorine-containing anti-fouling agent in hard conating, improves its hydrophobic oleophobic performance, makes perspiration be not easy to sprawl at hard coating surface, adhere to. Easily it is rubbed off although this technology enables to fingerprint, but there are the following problems for it: 1. along with cleaning increasing of number of times, silicone-based compound or the fluorine-containing anti-fouling agent of staying hard coating surface can be fewer and feweri until being wholly absent, and finally make it lose the function of anti-fingerprint print; 2. it is difficult to prevent oils and fats, moisture, salt from grading the fingerprint pollution formed, and these fingerprints manifest substantially at hard coating surface.
Summary of the invention
The technical problem to be solved in the present invention is the problems referred to above existed for prior art, it is provided that touch screen anti-fingerprint transparent hardened film.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
Touch screen anti-fingerprint transparent hardened film, it includes transparent support and is arranged on the transparent hard-coating layer of transparent support surface, transparent hard-coating layer surface distributed has mean diameter to be 0.1～0.9 μm of particle, and is highly the projection of 0.1～0.9 μm in the formation of transparent hard-coating layer surface.
Above-mentioned touch screen anti-fingerprint transparent hardened film, the spacing of described adjacent protrusion is 0.1～10 times of height of projection.
Above-mentioned touch screen anti-fingerprint transparent hardened film, described transparent hard-coating layer is to be formed through ultraviolet light polymerization by the coating fluid containing particle, component and weight portion thereof that coating fluid contains be: UV acrylic resin 20～70 parts, light trigger 1～10 part, levelling agent 0.01～0.5 part, 10～50 parts of particle, PFPE 0.2～2 part, solvent 20～80 parts.
Above-mentioned touch screen anti-fingerprint transparent hardened film, described particle is selected from nano silicon, aluminium oxide, titanium dioxide, chromium oxide, zinc sulfide, zirconium oxide, polymethyl methacrylate particle, polyurethane particles or their compositions.
Above-mentioned touch screen anti-fingerprint transparent hardened film, described particle is selected from silicon dioxide, aluminium oxide, polymethyl methacrylate particle, polyurethane particles.
Above-mentioned touch screen anti-fingerprint transparent hardened film, described UV acrylic resin is selected from (methyl) acrylic ester prepolymer of more than 3 degrees of functionality, (methyl) acrylate monomer or their compositions.
Above-mentioned touch screen anti-fingerprint transparent hardened film, the thickness of described transparent hard-coating layer is 2～6 μm.
Above-mentioned touch screen anti-fingerprint transparent hardened film, described transparent hard-coating layer hardness be 2H or higher.
Above-mentioned touch screen anti-fingerprint transparent hardened film, the pure water contact angle >=100o on described transparent hard-coating layer surface, hexadecane contact angle >=60o.
Compared with prior art, the present invention is by the particle less at transparent hard-coating layer surface distributed particle diameter, and then form projection on transparent hard-coating layer surface, the compositions such as the moisture in fingerprint, oils and fats are disperseed, the fingerprint is made to be difficult to manifest on cured film surface, it is to avoid to lose the drawback of anti-fingerprint function because cleaning increased frequency; Simultaneously because the height of this projection is low, it is formed without antiglare effect at hard coating surface, does not affect light transmittance and the mist degree of cured film; Furtherly, used by the combination of employing particle with PFPE, define " Folium Nelumbinis " effect at hard coating surface; cured film is made to have high definition; resistance and fingerprint resistance pollution effects is more significantly, and has the scratch resistant performance of excellence, can be widely applied to screen protection field.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure, each label is expressed as: transparent support 1; Transparent hard-coating layer 2; Protruding 3.
Detailed description of the invention
Touch screen anti-fingerprint transparent hardened film provided by the invention, including transparent support and the transparent hard-coating layer being arranged on transparent support surface, transparent hard-coating layer is to be formed through ultraviolet light polymerization by the coating fluid containing particle.
In order to make coating give the enough hardness of cured film and wearability, being formed in the coating fluid of hard conating and employ UV acrylic resin, it selects (methyl) acrylate monomer or their compositions of more than (methyl) acrylic ester prepolymer of more than 3 degrees of functionality, 3 degrees of functionality. (methyl) acrylic ester prepolymer being suitable for more than 3 degrees of functionality of the present invention refers to that molecule is contained within (methyl) acrylate of 3 or more than 3 (methyl) acryloyl groups, such as: they can be selected from commercially available polyurethane (methyl) acrylate or epoxy (methyl) acrylate, is particularly, but not limited to following substances: aliphatic polyurethane three (methyl) acrylate, aliphatic polyurethane four (methyl) acrylate, aliphatic polyurethane five (methyl) acrylate, aliphatic polyurethane six (methyl) acrylate, aromatic series adoption urethane three (methyl) acrylate, aromatic series adoption urethane four (methyl) acrylate, aromatic series adoption urethane five (methyl) acrylate, aromatic series adoption urethane six (methyl) acrylate, PEPA, aliphatic polyurethane (methyl) triacrylate, PEPA, aliphatic polyurethane (methyl) tetraacrylate, PEPA, aliphatic polyurethane (methyl) five acrylate, PEPA, aliphatic polyurethane (methyl) six acrylate, phenolic aldehyde oxygen (methyl) acrylate, oxygen soybean oil (methyl) acrylate etc.,(methyl) acrylate monomer being suitable for more than 3 degrees of functionality of the present invention can be selected from commercially available following material: tetramethylolmethane three (methyl) acrylate, tetramethylolmethane four (methyl) acrylate, ethoxyquin tetramethylolmethane four (methyl) acrylate, dipentaerythritol three (methyl) acrylate, dipentaerythritol four (methyl) acrylate, dipentaerythritol five (methyl) acrylate, dipentaerythritol six (methyl) acrylate, two-three hydroxyl (methyl) tetraacrylate, trimethylolpropane tris (methyl) acrylate, three (2-ethoxy) isocyanide moon uric acid three (methyl) acrylate, ethoxyquin trimethylolpropane tris (methyl) acrylate, third oxidation trimethylolpropane tris (methyl) acrylate, glycerol propoxylate three (methyl) acrylate etc., the consumption of UV acrylic resin preferably 20～70 weight portion, if lower than 20 weight portions, film is too thin, then oxygen inhibition phenomenon is serious, and coating surface is difficult to fully solidify, and if above 70 weight portions, then the viscosity of coating fluid is too big, coating is difficult to.
Formed in the coating fluid of hard conating containing particle, these particles are distributed in the surface of hard conating, and form projection on the surface of cured film, protruding height is identical with the particle diameter of particle, and the particle diameter of particle is more big, and the microprotrusion of cured film is more obvious, the effect that anti-fingerprint is polluted is more obvious, but if the particle diameter of particle is too big, the projection on cured film surface reaches the degree that human eye can be distinguished, will have a strong impact on the definition of cured film; The particle diameter of particle is too little, effective bulge-structure just cannot be formed on cured film surface, just do not have the purpose of anti-fingerprint, so the particle diameter of particle is preferably controlled in 0.1 μm～0.9 μm, the addition of particle preferably 10～50 weight portion, if lower than 10 weight portions, the microprotrusion spacing on cured film surface is too big, it does not have the effect of anti-fingerprint; But, along with increasing of nanoparticle, the mist degree of cured film increases therewith, when nanoparticle addition is more than 50 weight portion, the mist degree of cured film can more than 1.5%, thus have a strong impact on the visual effect of transparent hardened film, so control in height of projection 0.1～10 times of the spacing of adjacent protrusion is advisable.
Particle in coating fluid can select commercially available nano silicon, aluminium oxide, titanium dioxide, chromium oxide, zinc sulfide, zirconium oxide, polymethyl methacrylate particle, polyurethane particles or their compositions, it is preferable that silicon dioxide, aluminium oxide, polymethyl methacrylate particle, polyurethane particles.
Being formed in the coating fluid of hard conating possibly together with PFPE, PFPE can substantially reduce the surface energy of hard conating, makes hard conating have the effect of hydrophobic oleophobic. The PFPE of the present invention preferably comprises the PFPE that double bond is modified, can be participated in the cross-linking reaction of UV acrylic resin film forming by double bond, fluorine the low-surface-energy effect provided could be permanent. The consumption of PFPE is 0.2～2 weight portion, during lower than 0.2 weight portion, and hydrophobic oleophobic DeGrain; When consumption is more than 2 weight portion, the levelability of hard conating can be had adverse effect on.
The THICKNESS CONTROL of hard conating is advisable in the scope of 1～20 μm, if this is because thickness is lower than 1 μm, being then extremely difficult to the pencil hardness of 2H; And if the thickness of lower floor is more than 20 μm, cured film can be very crisp, and processability is deteriorated. So, hard coat layer thickness preferably 2～10 μm, more preferably 3～6 μm.
Form hard conating for the crosslinking of UV acrylic resin, coating fluid further comprises light trigger. Light trigger is raw material commonly used in the art, and the light trigger being suitable for the present invention has radical polymerization light trigger and the big class of Cationic photoinitiator two. The light trigger enumerated has: radical polymerization light trigger: 2-hydroxy-methyl phenyl-propane-1-ketone (1173), 1-hydroxy-cyclohexyl phenyl ketone (184), 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholinyl-1-acetone (907), benzoin dimethylether (651), 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide (TPO), benzophenone (BP), 2-isopropyl thioxanthone (ITX) etc.; Cationic photoinitiator: diaryl group iodized salt, triaryl iodine salt, alkyl iodine salt, the luxuriant ferrum hexafluorophosphate of isopropylbenzene etc. The preferred free radical polymerization photoinitiator of the present invention, such as 2-hydroxy-methyl phenyl-propane-1-ketone (1173) and 1-hydroxy-cyclohexyl phenyl ketone (184). Above-mentioned light trigger preferably 1～10 weight portion. These light curing agents can be used alone, it is also possible to by 2 kinds or combine use above.
In order to improve the flatness of hard conating, the coating fluid in the present invention can also add levelling agent. The levelling agent being suitable for the present invention can be selected from commercially available organosiloxane or acrylic acid levelling agent, as: BYK-307, BYK-377, BYK-354, BYK-306, BYK-333, Levaslip407, Levaslip410, Levaslip411, Levaslip432, Levaslip466 etc. The amount of levelling agent preferably 0.01～0.5 weight portion, if less than 0.01 weight portion, hard conating there will be shrinkage cavity, the disadvantage such as wrinkling; And if greater than 0.5 weight portion, then the anti-fingerprint effect of hard conating can be had adverse effect on.
As required, the coating fluid in the present invention is additionally added organic solvent, as long as the hard conating of the present invention can be formed on base material, it is possible to use conventional organic solvent is without any restriction, for instance: aliphatic hydrocarbon is hexane such as, heptane and hexamethylene; Aromatic hydrocarbons such as toluene and dimethylbenzene; Halogenated hydrocarbons such as dichloromethane and dichloroethanes; Alcohols is methanol such as, ethanol, propanol and butanol; Ketone is acetone such as, butanone, methyl ethyl ketone, 2 pentanone, and isophorone; Esters such as ethyl acetate and butyl acetate; And cellosolve based solvent such as ethyl cellosolve. Organic solvent can be used alone or uses with two or more combinations. The concentration of coating fluid and viscosity suitably can select according to the purpose of the present invention.
As long as the hard conating of the present invention can be formed, painting method being had no particular limits, it is possible to use conventional method, such as stick coating method, scraper for coating method, Mayer stick coating method, rolling method, scraper plate rubbing method, bar seam rubbing method and gravure coating process form coating. Preferred stripe seam and gravure coating process.
Can obtaining from high voltage mercury lamp, fusion H lamp or xenon lamp as the ultraviolet being used for making the resin in coating of the present invention solidify, the light quantity being commonly used for irradiating is at 100-500mj/cm2Scope in, it is preferable that 300～500mj/cm2Scope.
The support of the present invention is preferably plastic sheeting, the example of plastic sheeting includes: mylar, as polyethylene terephthalate (PET), polycarbonate film (PC), polymethyl methacrylate film (PMMA), ABS and PET laminated film, PC and PMMA laminated film etc., preferably polyethylene terephthalate (PET), polycarbonate film (PC), is more highly preferred to polyethylene terephthalate (PET).
The thickness of support has no particular limits. Generally, described thickness is at 20-300 micron, it is preferable that in the scope of 50-200 micron. When this thickness is less than 20 microns, mechanical strength not, and will will have such probability, and namely cured film deformation is too big and durability is inadequate; When thickness is more than 300 microns, increase difficulty of processing and cost increase. Therefore, the thickness outside appeal scope is worthless.
Support in the present invention is preferably transparent, the light transmission rate of transparent membrane in 400nm～700nm wave-length coverage preferably in more than 80%, more preferably more than 90%.
Be able to being characterized by surface for cured film surface anti-fingerprint performance, human sweat is mainly moisture and various oils and fats, therefore can characterize surface energy by the pure water contact angle and hexadecane contact angle testing cured film surface. The pure water contact angle of the cured film in the present invention is at least 100o, and hexadecane contact angle is at least 60o.
Below in conjunction with specific embodiment, the present invention is specifically described, but protection scope of the present invention is not limited to this.
Embodiment 1
1. the preparation of silica dispersions:
The nano silicon [Degussa R-972] of 50 weight portions and the propylene glycol monomethyl ether of 50 weight portions are mixed, homogenizer disperses 30 minutes, then with ball mill ball milling 10 hours, filter, obtain mean diameter 0.1 μm, solid is the silica dispersions of 50%.
2. the preparation of hard coat layer coating solution
6197H50 weight portion,
Initiator 1843 weight portion,
Silica dispersions 100 weight portion,
Modified PFPE AF-010.2 weight portion,
Levelling agent Byk-3770.05 weight portion,
Propylene glycol monomethyl ether 30 weight portion,
50 parts by weight of fatty race polyurethane acrylate prepolymer 6197H [Changxing chemistry; Degree of functionality 6] it is dissolved in the propylene glycol monomethyl ether solvent of 30 weight portions, add the 0.05 polyether-modified polydimethylsiloxane levelling agent BYK-377 of weight portion [Bi Ke chemistry], and add the modified PFPE AF-01 [China Lucky Group Corporation's manufacture] of 3 weight portion light triggers 184 [Tianjin proud son of heaven Chemical Co., Ltd.] and 0.2 weight portion, finally add 100 parts by weight of silica dispersion liquid [solids 50%, mean diameter 0.1 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Above-mentioned hard coat layer coating solution is applied to a face of PET [polyethylene terephthalate] thin film that thickness is 125 micrometer optical levels, after the 70-90 DEG C of dry 2min of the coating to being formed, with 400mJ/cm2Light quantity, by ultraviolet radiation, dry coating is solidified, obtain coating layer thickness be 2 μm, height of projection be 0.1 μm, the anti-fingerprint transparent hardened film that spacing is 0.01 μm of adjacent protrusion, test its performance.
Embodiment 2
1. the preparation of alumina fluid dispersion:
By nano aluminium oxide [the model XZ-L14 of 50 weight portions, Hefei Xiang positizing Science and Technology Ltd.] and the methyl iso-butyl ketone (MIBK) of 50 weight portions mix, homogenizer disperses 30 minutes, then ball mill ball milling is used 7 hours, filter, obtain mean diameter 0.3 μm, solid is the alumina fluid dispersion of 50%.
2. the preparation of hard coat layer coating solution
UXE100030 weight portion,
PETA20 weight portion,
Initiator 11738 weight portion,
Alumina fluid dispersion 80 weight portion,
Modified PFPE DAC-HP0.5 weight portion,
Levelling agent Byk-3540.3 weight portion,
Methyl iso-butyl ketone (MIBK) 40 weight portion,
30 parts by weight of fatty race polyurethane acrylate prepolymer UXE1000, [chemical medicine chemical industry (Wuxi) company limited manufactures, degree of functionality 4] and 20 weight portion pentaerythritol triacrylate [PETA, Tianjin proud son of heaven Chemical Co., Ltd., degree of functionality 3] it is dissolved in the methyl isobutyl ketone solvent of 40 weight portions, add 0.3 parts by weight of polypropylene acid esters levelling agent BYK-354 [Bi Ke chemistry], and add the modified PFPE DAC-HP [manufacture of Daikin company] of 8 weight portion light triggers 1173 [Nanjing Wa Li Chemical Industry Science Co., Ltd] and 0.5 weight portion, finally add 80 parts by weight of alumina dispersion liquid [solids 50%, mean diameter 0.3 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 2.5 μm, height of projection be 0.3 μm, the anti-fingerprint transparent hardened film that spacing is 0.3 μm of adjacent protrusion, test its performance.
Embodiment 3
1. the preparation of silica dispersions:
The nano silicon [Degussa R-972] of 50 weight portions and the butanone of 50 weight portions are mixed, homogenizer disperses 30 minutes, then with ball mill ball milling 4 hours, filter, obtain mean diameter 0.5 μm, solid is the silica dispersions of 50%.
2. the preparation of hard coat layer coating solution
EM-241150 weight portion,
Initiator 1842 weight portion,
Silica dispersions 60 weight portion,
Modified PFPE AF-011 weight portion,
Levelling agent Levaslip4320.2 weight portion,
Butanone 50 weight portion,
50 weight portion ethoxyquin tetramethylol methane tetraacrylate monomer EM-2411 [Changxing chemistry, degree of functionality 4] it is dissolved in the butanone solvent of 50 weight portions, , add 0.2 weight portion and there is the levelling agent Levaslip432 [being manufactured by moral modest (Shanghai) Chemical Co., Ltd.] of polydimethylsiloxaneskeleton skeleton structure, and add the modified PFPE AF-01 [China Lucky Group Corporation's manufacture] of 2 weight portion light triggers 184 [Tianjin proud son of heaven Chemical Co., Ltd.] and 1 weight portion, finally add 60 parts by weight of silica dispersion liquid [solids 50%, mean diameter 0.5 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 3 μm, height of projection be 0.5 μm, the anti-fingerprint transparent hardened film that spacing is 1.5 μm of adjacent protrusion, test its performance.
Embodiment 4
1. the preparation of silica dispersions:
The nano silicon [Degussa R-972] of 50 weight portions and the butanone of 50 weight portions are mixed, homogenizer disperses 30 minutes, then with ball mill ball milling 2 hours, filter, obtain mean diameter 0.7 μm, solid is the silica dispersions of 50%.
2. the preparation of hard coat layer coating solution
EB512950 weight portion,
Initiator 11731 weight portion,
Silica dispersions 40 weight portion,
Modified PFPE RS-751.5 weight portion,
Levelling agent BYK-3330.02 weight portion,
Butanone 40 weight portion,
50 parts by weight of fatty adoption urethane six acrylic ester prepolymer EB5129, [Qing Te sufacing (Shanghai) Co., Ltd. manufactures, degree of functionality 6] it is dissolved in the butanone solvent of 50 weight portions, add the 0.02 polyether-modified polydimethylsiloxane levelling agent BYK-333 of weight portion [Bi Ke chemistry], and add the modified PFPE RS-75 [Japan DIC manufactures] of 1 weight portion light trigger 1173 [Nanjing Wa Li Chemical Industry Science Co., Ltd] and 1.5 weight portions, finally add 40 parts by weight of silica dispersion liquid [solids 50%, mean diameter 0.7 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 4.5 μm, height of projection be 0.7 μm, the anti-fingerprint transparent hardened film that spacing is 3.5 μm of adjacent protrusion, test its performance.
Embodiment 5
1. the preparation of silica dispersions:
The nano silicon [Degussa R-972] of 50 weight portions and the propylene glycol monomethyl ether of 50 weight portions are mixed, homogenizer disperses 30 minutes, then with ball mill ball milling 1.5 hours, filter, obtain mean diameter 0.9 μm, solid is the silica dispersions of 50%.
The preparation of 2 hard coat layer coating solution
6195-10050 weight portion,
Initiator 1843 weight portion,
Silica dispersions 20 weight portion,
Modified PFPE AF-012 weight portion,
Levelling agent Byk-3070.1 weight portion,
Propylene glycol monomethyl ether 70 weight portion,
50 parts by weight of fatty race polyurethane acrylate prepolymer 6195-100 [Changxing chemistry; Degree of functionality 10] it is dissolved in the propylene glycol monomethyl ether solvent of 70 weight portions, add the 0.1 polyether-modified polydimethylsiloxane levelling agent BYK-307 of weight portion [Bi Ke chemistry], and add the modified PFPE AF-01 [China Lucky Group Corporation's manufacture] of 3 weight portion light triggers 184 [Tianjin proud son of heaven Chemical Co., Ltd.] and 2 weight portions, finally add 20 parts by weight of silica dispersion liquid [solids 50%, mean diameter 0.9 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 6 μm, height of projection be 0.9 μm, the anti-fingerprint transparent hardened film that spacing is 9 μm of adjacent protrusion, test its performance.
Comparative example 1
1. the preparation of silica dispersions:
The nano silicon [Degussa R-972] of 50 weight portions and the butanone of 50 weight portions are mixed, homogenizer disperses 30 minutes, then with ball mill ball milling 0.5 hour, filter, obtain mean diameter 1.5 μm, solid is the silica dispersions of 50%.
2. the preparation of hard coat layer coating solution
EM-241150 weight portion,
Initiator 1842 weight portion,
Silica dispersions 110 weight portion,
Modified PFPE AF-011 weight portion,
Levelling agent Levaslip4320.2 weight portion,
Butanone 20 weight portion,
50 weight portion ethoxyquin tetramethylol methane tetraacrylate monomer EM-2411 [Changxing chemistry, degree of functionality 4] it is dissolved in the butanone solvent of 20 weight portions, , add 0.2 weight portion and there is the levelling agent Levaslip432 [being manufactured by moral modest (Shanghai) Chemical Co., Ltd.] of polydimethylsiloxaneskeleton skeleton structure, and add the modified PFPE AF-01 [China Lucky Group Corporation's manufacture] of 2 weight portion light triggers 184 [Tianjin proud son of heaven Chemical Co., Ltd.] and 1 weight portion, finally add 110 parts by weight of silica dispersion liquid [solids 50%, mean diameter 1.5 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 4 μm, height of projection be 1.5 μm, the anti-fingerprint transparent hardened film that spacing is 1.5 μm of adjacent protrusion, test its performance.
Comparative example 2
1. the preparation of alumina fluid dispersion:
By nano aluminium oxide [the model XZ-L14 of 50 weight portions, Hefei Xiang positizing Science and Technology Ltd.] and the methyl iso-butyl ketone (MIBK) of 50 weight portions mix, homogenizer disperses 30 minutes, then ball mill ball milling is used 18 hours, filter, obtain mean diameter 0.05 μm, solid is the alumina fluid dispersion of 50%.
2. the preparation of hard coat layer coating solution
UXE100050 weight portion,
Initiator 11738 weight portion,
Alumina fluid dispersion 10 weight portion,
Modified PFPE DAC-HP0.1 weight portion,
Levelling agent Byk-3540.3 weight portion,
Methyl iso-butyl ketone (MIBK) 80 weight portion,
50 parts by weight of fatty race polyurethane acrylate prepolymer UXE1000, [chemical medicine chemical industry (Wuxi) company limited manufactures, degree of functionality 4] it is dissolved in the methyl isobutyl ketone solvent of 80 weight portions, add 0.3 parts by weight of polypropylene acid esters levelling agent BYK-354 [Bi Ke chemistry], and add the modified PFPE DAC-HP [manufacture of Daikin company] of 8 weight portion light triggers 1173 [Nanjing Wa Li Chemical Industry Science Co., Ltd] and 0.1 weight portion, finally add 10 parts by weight of alumina dispersion liquid [solids 50%, mean diameter 0.05 μm], obtain hard coat layer coating solution, standby.
3. the preparation of anti-fingerprint transparent hardened film
Adopt and the identical step of embodiment 1, obtain coating layer thickness be 2 μm, height of projection be 0.05 μm, the anti-fingerprint transparent hardened film that spacing is 0.05 μm of adjacent protrusion, test its performance.
The each embodiment test tables of data of table 1
| Pure water contact angle (o) | Hexadecane contact angle (o) | Anti-fingerprint performance | Pencil hardness (H) | Light transmittance (%) | Mist degree (%) | |
| Embodiment 1 | 101 | 62 | B | 2.5 | 89.6 | 1.2 |
| Embodiment 2 | 101 | 61 | B | 2 | 90.1 | 1.1 |
| Embodiment 3 | 108 | 63 | B | 2 | 90.5 | 0.8 |
| Embodiment 4 | 110 | 65 | A | 2.5 | 91.2 | 1.0 |
| Embodiment 5 | 112 | 68 | A | 3 | 91.9 | 1.2 |
| Comparative example 1 | 105 | 64 | A | 2 | 87.7 | 3.5 |
| Comparative example 2 | 89 | 52 | D | 2 | 91.3 | 0.6 |
In table: the method for testing of properties is as follows
(1) contact angle test
Use optical contact angle instrument [Sweden Biolin Scientific Co., Ltd.; Model: Attension], adopt sessile drop method to measure contact angle. Method is clean water droplet or the hexadecane of 2mm diameter to be dropped on the surface of hard conating, and measures the drop contact angle to hard coating surface.
(2) judgement of anti-fingerprint performance
Being laid on blackboard by cured film, hard conating, towards upper, is slowly pressed on hard coating surface with finger, observe the obvious degree of fingerprint, then with clean non-woven fabrics [BEMCITM-3: Asahi Chemical Industry's (strain) makes] wiping, recording following four grade, wherein A and B is qualified:
(A) substantially cannot see fingerprint;
(B) fingerprint is very shallow, it is easy to wipe clean;
(C) fingerprint is obvious, it is easy to wipe clean;
(D) fingerprint is it is obvious that be not easy to wipe clean.
(3) pencil hardness test
Method according to standard GB/T6739-1996, utilizes hardness of film tester [the Shanghai Pu Shen chemical machinery company limited swiped by pencil; Model: " BY "] measure pencil hardness.
(4) light transmittance and mist degree test
Use light transmittance haze meter [ electricity Se company of Japan; Model: NDH2000N] measure light transmittance and mist degree.
Claims (6)
1. touch screen anti-fingerprint transparent hardened film, it is characterized in that, it includes transparent support and is arranged on the transparent hard-coating layer of transparent support surface, it is characterized in that, transparent hard-coating layer surface distributed has mean diameter to be 0.1～0.9 μm of particle, and is highly the projection of 0.1～0.9 μm in the formation of transparent hard-coating layer surface;
The spacing of adjacent protrusion is 0.1～10 times of height of projection;
Described particle is nanoparticle, selected from silicon dioxide, aluminium oxide, titanium dioxide, chromium oxide, zinc sulfide, zirconium oxide, polymethyl methacrylate particle, polyurethane particles or their compositions;
Described transparent hard-coating layer is to be formed through ultraviolet light polymerization by the coating fluid containing particle, component and weight portion thereof that coating fluid contains be: UV acrylic resin 20～70 parts, light trigger 1～10 part, levelling agent 0.01～0.5 part, 10～50 parts of particle, PFPE 0.2～2 part, solvent 20～80 parts.
2. touch screen anti-fingerprint transparent hardened film according to claim 1, it is characterised in that described particle is selected from silicon dioxide, aluminium oxide, polymethyl methacrylate particle or polyurethane particles.
3. touch screen anti-fingerprint transparent hardened film according to claim 2, it is characterised in that described UV acrylic resin is selected from (methyl) acrylic ester prepolymer of more than 3 degrees of functionality, (methyl) acrylate monomer or their compositions.
4. touch screen anti-fingerprint transparent hardened film according to claim 3, it is characterised in that the thickness of described transparent hard-coating layer is 2～6 μm.
5. touch screen anti-fingerprint transparent hardened film according to claim 4, it is characterised in that described transparent hard-coating layer hardness be 2H or higher.
6. touch screen anti-fingerprint transparent hardened film according to claim 5, it is characterised in that the pure water contact angle >=100o on described transparent hard-coating layer surface, hexadecane contact angle >=60o.
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| CN201310515788.5A CN103540183B (en) | 2013-10-27 | 2013-10-27 | Touch screen anti-fingerprint transparent hardened film |
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| CN201310515788.5A CN103540183B (en) | 2013-10-27 | 2013-10-27 | Touch screen anti-fingerprint transparent hardened film |
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| CN103540183B true CN103540183B (en) | 2016-06-15 |
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| CN201310515788.5A Active CN103540183B (en) | 2013-10-27 | 2013-10-27 | Touch screen anti-fingerprint transparent hardened film |
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| WO2019116181A1 (en) * | 2017-12-12 | 2019-06-20 | 3M Innovative Properties Company | Compositions including alpha-alumina particles and methods of their use |
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Denomination of invention: Anti-fingerprint transparent hardened film for touch-screen Effective date of registration: 20171024 Granted publication date: 20160615 Pledgee: Industrial Commercial Bank of China Ltd. Hefei Changjiang East Road sub branch Pledgor: HEFEI LUCKY SCIENCE & TECHNOLOGY INDUSTRY Co.,Ltd. Registration number: 2017340000309 |
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