CN100426008C - Antiscraping optical film and use thereof - Google Patents
Antiscraping optical film and use thereof Download PDFInfo
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- CN100426008C CN100426008C CNB200610096389XA CN200610096389A CN100426008C CN 100426008 C CN100426008 C CN 100426008C CN B200610096389X A CNB200610096389X A CN B200610096389XA CN 200610096389 A CN200610096389 A CN 200610096389A CN 100426008 C CN100426008 C CN 100426008C
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Abstract
The invention provides an anti-scratching optical membrane and its use. And it comprises a three-layered structure, where a transparent substrate is in the middle, and two hard cover layers are on and under the transparent substrate, respectively, the first hard cover layer on the substrate is a diffusion layer and the second on under the substrate is an anti-scratching layer, the top surface of the diffusion layer has a concave-convex structure, the bottom surface of the anti-scratching layer is a smooth surface, and its characters: selecting novel hard cover liquid to form hard cover layers on the substrate surfaces, and after curing, intensifying its hardness; the surface resistivities of the two hard cover layers are between 10<8> and 10<12> Ohm/sq, and according to the measurement with JIS K5400 standard method, the two hard cover layers both have hardness of pencil of 3H or above. And it has high hardness and can prevent being scratched in operation, and when used as a protective diffusion membrane for the backlight module of a display, can not damage the prism structure of a light gathering membrane.
Description
Technical field
The present invention relates to blooming, relate in particular to a kind of anti-scratch blooming, particularly a kind of protectiveness diffusion barrier that can be applicable to LCD with hardening coat.
Background technology
Liquid crystal panel itself is not luminous, and therefore the backlight module as the brightness source is the significant components of LCD Presentation Function, and this backlight module is extremely important for improving liquid crystal display brightness.At present the most economic and easy solution is, blooming miscellaneous is set in backlight module, and this way need not changed any component design, can not consume additional energy source yet, but can improve the LCD panel luminance, is utilized with making the light source full blast.Fig. 1 is the rough schematic of the contained various bloomings of backlight module.As shown in Figure 1, the general contained blooming of backlight module comprises the reflectance coating 1 that is disposed at light guide plate 2 (light guide) below; And other blooming that is disposed at light guide plate 2 tops, these bloomings are from bottom to top in regular turn: diffusion barrier 3, condensing film 4 and 5, and protectiveness diffusion barrier 6.
Condensing film 4 and 5 major function be, by refraction and inner full-reflection effect, will be issued to from all directions ray-collecting at random from light guide plate 2, is concentrated to positive visual angle (On-axis) direction of degree approximately ± 35, and the briliancy of LCD is improved.Usually, condensing film mainly is to utilize rule or irregular prism decorative pattern microstructure to reach spotlight effect, yet, if prism structure contacts with panel, be easy to generate scratch, influence optical property.To this, the solution of industry is nothing more than producing vibration and cause mutual damage when utilizing protectiveness diffusion barrier (being called " going up diffusion barrier " again) to prevent condensing film and panel in conveying at present.For the prism striped of the condensing film that atomizes, the protectiveness diffusion barrier generally is the resinous coat that contains the organic or inorganic pearl in the substrate surface coating.
Regrettably, the selected resinous coat of this class protectiveness diffusion barrier is not good in the prior art, easily causes pearl to come off, and some also has the warping of membrane situation to take place, and this has just influenced its optical characteristics, has reduced the result of use of condensing film.
Summary of the invention
At the above-mentioned defective that prior art exists, the purpose of this invention is to provide that a kind of hardness is strong, transparency is high, anti-scratch blooming that can not warpage, this anti-scratch blooming can also can not constitute damage to condensing film easily by scratch during as the protectiveness diffusion barrier.
Technical solution of the present invention is:
Anti-scratch blooming, comprise three-decker, the middle layer is a transparent base, the upper and lower of transparent base is two-layer hardcoat layer (hard coat), the first hardcoat layer that is positioned at the top is a diffusion layer, and the second hardcoat layer that is positioned at the below is anti-scratch layer, and the upper surface of diffusion layer has concaveconvex structure, the lower surface of anti-scratch layer is a smooth surface, and it is characterized in that: the surface resistivity of the described first hardcoat layer and the second hardcoat layer is between 10
8To 10
12Ω/, and according to JIS K5400 standard method measurement, this two-layer hardcoat layer all has 3H or the above pencil hardness of 3H.
Further, above-mentioned anti-scratch blooming, wherein, the described first hardcoat layer and the second hardcoat layer are the hardcoat layers that hardcoat liquid is formed with the two curing modes processing of heating and ultraviolet ray; Described hardcoat liquid comprises antistatic agent, ultraviolet hardening resin and at least a resin that is selected from group that thermoset resin, thermoplastic resin and composition thereof constitute, and is identical or different in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
Again further, above-mentioned anti-scratch blooming, wherein said transparent base are plastics or glass.
Again further, above-mentioned anti-scratch blooming, wherein, the thickness of described diffusion layer is 5 microns to 20 microns.
Again further, above-mentioned anti-scratch blooming, wherein, the thickness of described anti-scratch layer is 1 micron to 10 microns.
Again further, above-mentioned anti-scratch blooming, wherein, the described first hardcoat layer further comprises organic granular, and this organic granular accounts for 10～30Wt% of the first hardcoat layer resinous principle general assembly (TW).
Again further, above-mentioned anti-scratch blooming, wherein, described organic granular is acrylate resin, amido formate resin, silicone resin, or both or three's potpourri in the middle of them.
Again further, above-mentioned anti-scratch blooming, wherein, the particle diameter of described organic granular is 2 microns to 30 microns.
Again further, above-mentioned anti-scratch blooming, wherein, described antistatic agent is selected from ethoxy fatty acid glyceride, quaternary ammonium compound compound, fatty amine analog derivative, polyethylene oxide, siloxane or alcohol derivatives.
Again further, above-mentioned anti-scratch blooming, wherein, described ultraviolet hardening resin comprises at least a acrylic monomer or acrylic ester monomer with one or more functional groups.
Again further, above-mentioned anti-scratch blooming, wherein, described acrylic ester monomer is (methyl) acrylate, amido formate acrylate, polyester acrylate or epoxy acrylate.
Again further, above-mentioned anti-scratch blooming, wherein, described ultraviolet hardening resin further comprises the acrylic ester oligomer.
Again further, above-mentioned anti-scratch blooming, wherein, described thermoset resin is selected from the group that polystyrene resin, vibrin, epoxy resin, polyacrylate resin, polycarbonate and composition thereof are formed.
Again further, above-mentioned anti-scratch blooming wherein, further comprises adjuvant separately in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
Again further, above-mentioned anti-scratch blooming wherein, is measured according to JIS K7136 standard method, and this blooming has 20% to 90% mist degree.
Again further, above-mentioned anti-scratch blooming, wherein, it is 85% to 95% light penetration degree that this blooming has.
Further, above-mentioned anti-scratch blooming, wherein, this blooming is a kind of anti-scratch blooming that does not have warpage, its first hardcoat layer and the second hardcoat layer are the hardcoat layers that hardcoat liquid is formed with the two curing modes processing of heating and ultraviolet ray; Described hardcoat liquid comprises antistatic agent, ultraviolet hardening resin and thermoset resin, and identical or different in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
Further, above-mentioned anti-scratch blooming, wherein, described thermoset resin is selected from the group that polystyrene resin, vibrin, epoxy resin, polyacrylate resin, polycarbonate and composition thereof are formed.
Further, above-mentioned anti-scratch blooming wherein, is measured according to JIS K7136 standard method, and this blooming has 20% to 90% mist degree.
Further, above-mentioned anti-scratch blooming, wherein, this blooming has 85% to 95% light penetration degree.
In addition,, it is characterized in that: above-mentioned any one anti-scratch blooming is used for the backlight module of display, with as the protectiveness diffusion barrier for reaching the purposes of the anti-scratch blooming in the goal of the invention.
Description by above technical scheme can find that outstanding substantive distinguishing features of the present invention and marked improvement are embodied in:
1. the present invention forms the hardcoat layer at substrate surface with the coating of novel hardcoat liquid, and the blooming that makes has good resistance static behaviour and high rigidity characteristic, can effectively protect contact member, and the blooming surfacing do not have warpage, and its optical property is unaffected;
2. blooming transparency height of the present invention; because substrate surface is coated with the coating with micro concavo-convex structure; thereby have diffusion concurrently; can be applicable to the backlight module of display; especially be arranged on the exiting surface of condensing film as the protectiveness diffusion barrier; neither can or not constitute damage easily by scratch to condensing film yet.
Description of drawings
Fig. 1 is the structural representation of the contained various bloomings of backlight module;
Fig. 2 is a kind of embodiment synoptic diagram of the anti-scratch blooming of the present invention.
The implication of each Reference numeral is as follows among the figure:
1 reflectance coating
2 light guide plate
3 diffusion barriers
4 condensing films
5 condensing films
6 protection diffusion barriers
10 condensing films
11 anti-scratch layers
12 base materials
13 diffusion layers
14 organic granulars
20 anti-scratch bloomings
Embodiment
The invention provides a kind of anti-scratch blooming, form the hardcoat layer at substrate surface, solidify the hardness that the back strengthens blooming by selecting novel hardcoat liquid for use, when preventing its operation by scratch.This blooming transparency height, can not warpage, during as the protectiveness diffusion barrier in the middle of the display backlight module, can not constitute damage to the prism structure of condensing film.
The employed base material of the anti-scratch blooming of the present invention can be any the technical field of the invention and has and know the known person of the knowledgeable, for example glass or plastics usually.Above-mentioned plastic basis material there is no particular restriction, include but not limited to: vibrin (polyester resin), as polyethylene terephthalate (polyethylene terephthalate, PET) or Polyethylene Naphthalate (polyethylenenaphthalate, PEN); Polyacrylate resin (polyacrylate resin), as polymethylmethacrylate (polymethyl methacrylate, PMMA); Polyimide resin (polyimideresin); Poly-cyclic olefin resins (polycycloolefin resin); Polycarbonate resin (polycarbonateresin); Polyurethane resin (polyurethane resin); Triafol T (triacetatecellulose, TAC); Or the potpourri of above-mentioned substance.In the middle of these materials, preferred: polyethylene terephthalate, polymethylmethacrylate, poly-cyclic olefin resins, Triafol T or its potpourri; Further preferred: polyethylene terephthalate.The thickness of base material depends on the demand of the optical articles desiring to make usually, and preferable range is about 16 microns (μ m) between about 250 microns.
When using plastic basis material, form the hardcoat layer on the plastic basis material surface, can strengthen hardness and avoid the substrate surface scratch, play the scratch resistance effect.The general employed hardcoat layer of industry is constituted by ultraviolet hardening resin (UV curing resin), though it can improve skin hardness, shrinks inconsistent and unbalanced stress situation because the interlinkage effect produces, so easily produce warpage.
In order to solve warpage issues, the present invention handles the formation first hardcoat layer and the second hardcoat layer below reaching above the base material with hardcoat liquid to heat with two (dualcuring) modes of solidifying of ultraviolet ray.According to the present invention, in order to form this first and the hardcoat liquid of this second hardcoat layer can be identical or different, the composition of hardcoat liquid is except that comprising antistatic agent (anti-static agent), ultraviolet hardening resin, also comprise thermoset resin (thermal setting resin), thermoplastic resin (thermal plastic resin) or its potpourri, preferred thermoset resin.Because thermoset resin has high strength and good toughness, can make prepared hardcoat layer have remarkable thermotolerance and minimum volumetric shrinkage, therefore can overcome warpage issues.Simultaneously, the hardcoat layer of blooming of the present invention has good resistance static behaviour and high rigidity characteristic, and its surface resistivity is between 10
8To 10
12Ω/ measures according to JIS K5400 standard method, and its pencil hardness can reach 3H or more than the 3H.
Anti-scratch blooming of the present invention has good light penetration degree, that is, measure according to JIS K7136 standard method, has the penetration between about 85% to about 95%.In addition, be the prism striped of atomizing condensing film, anti-scratch blooming of the present invention has the light diffusion of some degree, that is, measure according to JIS K7136 standard method, has 20% to 90% mist degree, is preferably 30% to 70%, is more preferred from 40% to 55%.
For reaching the light diffusion effect, blooming of the present invention (that is, exiting surface) above base material forms the micro concavo-convex structure with the first hardcoat layer, with as diffusion layer.This diffusion layer formation method there is no particular restriction, is to be familiar with this operator to know, and includes but not limited to: screen painting, coating, spraying or embossing processing etc.This diffusion layer must be able to allow light see through, the person that is preferably the water white transparency.According to one embodiment of the present invention, the thickness of diffusion layer is between 5～20 microns, and is preferable between 6～15 microns.
According to technical solution of the present invention, preferable mode is to be coated with the first hardcoat layer that contains organic granular has concaveconvex structure with formation diffusion layer on base material.The shape of organic granular there is no particular restriction, for example is sphere, ellipse, rhombus etc.; Its kind does not also have particular restriction, for example can be acrylate resin, amido formate resin, silicone resin or its potpourri, is preferably acrylate resin.The diameter of above-mentioned organic granular can be identical or different, and is preferable between about 2 microns to about 30 microns, better between about 5 microns to about 15 microns.The amount of above-mentioned organic granular is preferably 10～30Wt% with respect to resinous principle general assembly (TW) in this hardcoat layer.
For preventing blooming of the present invention by other diaphragm scratch, therefore blooming of the present invention is coated with the second hardcoat layer below base material, to form the smooth surface as anti-scratch layer.The thickness of this anti-scratch layer is between 1 micron to 10 microns, and is preferable between 3 microns to 6 microns.
Fig. 2 is a kind of preferred embodiment of the anti-scratch blooming of the present invention.As shown in Figure 2, the anti-scratch blooming 20 of the present invention is disposed at condensing film 10 tops, and wherein base material 12 tops are the diffusion layer 13 with concaveconvex structure, and this diffusion layer comprises organic granular 14, and base material 12 belows are the anti-scratch layer 11 with smooth surface.
The ultraviolet hardening resin that can be used in the hardcoat liquid of the present invention comprises at least a acrylic monomer or acrylic ester monomer with one or more functional group, is preferably acrylic ester monomer.Can be used for the acrylic ester monomer among the present invention, include but not limited to: (methyl) acrylate, amido formate acrylate (urethane acrylate), polyester acrylate (polyesteracrylate) or epoxy acrylate (epoxy acrylate) etc. are preferably (methyl) acrylate.
For example, being applicable to that esters of acrylic acid of the present invention can be selected from comprises methyl methacrylate, butyl acrylate, 2-phenoxyethyl acrylate (2-phenoxy ethyl acrylate), ethoxyquin 2-phenoxyethyl acrylate (ethoxylated 2-phenoxy ethyl acrylate), 2-(2-ethoxy ethoxy) ethyl propylene acid esters (2-(2-ethoxyethoxy) ethyl acrylate), ring trimethylolpropane dimethoxym ethane acrylate (cyclic trimethylolpropane formal acrylate), β-propyloic acrylic ester (β-carboxyethyl acrylate), lauric acid (methyl) acrylate (lauryl (meth) acrylate), isooctyl acrylate (isooctyl acrylate), stearic acid (methyl) acrylate (stearyl (meth) acrylate), isodecyl acrylate (isodecyl acrylate), isobornyl (methyl) acrylate (isoborny (meth) acrylate), benzyl acrylate (benzyl acrylate), 3-hydroxyl-2,2-neopentanoic acid 3-hydroxyl-2,2-dimethyl propyl ester diacrylate (hydroxypivalyl hydroxypivalate diacrylate), ethoxyquin 1, (ethoxylated 1 for the 6-hexanediyl ester, 6-hexanediol diacrylate), propylene glycol diacrylate (dipropylene glycol diacrylate), ethoxyquin propylene glycol diacrylate (ethoxylateddipropylene glycol diacrylate), neopentylglycol diacrylate (neopentyl glycoldiacrylate), the third oxidation neopentylglycol diacrylate (propoxylated neopentyl glycoldiacrylate), ethoxyquin bisphenol-A two (methyl) acrylate (ethoxylated bisphenol-Adi (meth) acrylate), the 2-methyl isophthalic acid, ammediol diacrylate (2-methyl-1,3-propanediol diacrylate), ethoxyquin-2-methyl isophthalic acid, ammediol diacrylate (ethoxylated 2-methyl-1,3-propanediol diacrylate), 2-butyl-2-ethyl-1, ammediol diacrylate (2-butyl-2-ethyl-1,3-propanediol diacrylate), ethylene glycol dimethacrylate (ethylene glycol dimethacrylate), diethylene glycol dimethylacrylate (diethylene glycol dimethacrylate), 2-hydroxyethyl methacrylate phosphate (2-hydroxyethyl metharcrylate phosphate), three (2-hydroxyethyl) isocyanic acid triacrylate (Tris (2-hydroxy ethyl) isocyanurate triacrylate), pentaerythritol triacrylate (pentaerythritol triacrylate), ethoxyquin trimethylolpropane triacrylate (ethoxylated trimethylolpropane triacrylate), the third oxidation trimethylolpropane triacrylate (propoxylated trimethylolpropane triacrylate), trimethylol-propane trimethacrylate (trimethylolpropane trimethacrylate), tetramethylol methane tetraacrylate (pentaerythritol tetraacrylate), ethoxyquin tetramethylol methane tetraacrylate (ethoxylatedpentaerythritol tetraacrylate), two-trimethylolpropane tetra-acrylate (ditrimethylolpropane tetraacrylate), the third oxidation tetramethylol methane tetraacrylate (propoxylated pentaerythritol tetraacrylate), tetramethylol methane tetraacrylate (pentaerythritol tetraacrylate), dipentaerythritol acrylate (dipentaerythritolhexaacrylate), (methyl) acrylate, hydroxy-ethyl acrylate (hydroxyethyl acrylate, HEA), methacrylic acid-2-hydroxy methacrylate (2-hydroxyethyl methacrylate, HEMA), tripropylene glycol two (methyl) acrylate (tripropylene glycol di (meth) acrylate), 1,4-butylene glycol two (methyl) acrylate (1,4-butanediol di (meth) acrylate), 1,6-hexanediol two (methyl) acrylate (1,6-hexanediol di (meth) acrylate), allylation two (methyl) cyclohexyl acrylate (allylated cyclohexyl di (meth) acrylate), two (methyl) acrylic acid isocyanates (isocyanurate di (meth) acrylate), ethoxylated trimethylolpropane three (methyl) acrylate (ethoxylated trimethylol propane tri (meth) acrylate), propoxylated glycerol three (methyl) acrylate (propoxylatedglycerol tri (meth) acrylate), trimethylolpropane tris (methyl) acrylate (trimethylolpropane tri (meth) acrylate), three (propylene oxygen ethyl) isocyanates (tris (acryloxyethyl) isocyanurate), and the group that forms of the potpourri of above-mentioned these materials.
For increasing the film forming of hardcoat liquid, ultraviolet hardening resin of the present invention can optionally comprise molecular weight between 10
3To 10
4Oligomer, this type of oligomerization system is had the knack of the personage institute well known of this technology, acrylic ester oligomer for example, include but not limited to: the amido formate acrylate, as fatty amine carbamate acrylate (aliphatic urethane acrylate), fatty amine carbamate six acrylate (aliphatic urethane hexaacrylate), aromatic amine carbamate six acrylate (aromatic urethane hexaacrylate); Epoxy acrylate is as bisphenol-A epoxy diacrylate (bisphenol-A epoxy diacrylate), phenolic aldehyde epoxy acrylate (novolacepoxy acrylate); Polyester acrylate is as polyester diacrylate (polyester diacrylate); Or pure acrylic acid ester.
Can be used for the thermoset resin in the hardcoat liquid of the present invention, its mean molecular weight is generally between 10
4To 2 * 10
6, be preferably 2 * 10
4To 3 * 10
5, be more preferred from 4 * 10
4To 10
5The group that the optional self-polystyrene resin of thermoset resin of the present invention, vibrin, epoxy resin, polyacrylate resin, polycarbonate and composition thereof are formed is preferably polyacrylate resin, as (methyl) acrylic acid (first) ester.Be to increase bridging property, thermoset resin can optionally contain hydroxyl, and (OH), carboxyl (COOH) or amido (NH
2), be preferably hydroxyl, hydroxy-ethyl acrylate (hydroxyethyl acrylate for example, HEA), hydroxypropyl acrylate (hydroxypropyl acrylate, HPA), methacrylic acid-2-hydroxy methacrylate (2-hydroxyethyl methacrylate, HEMA), hydroxy propyl methacrylate (hydroxypropyl methacrylate, HPMA) or the potpourri of above-mentioned these materials.
The thermoplastic resin that can be used in the hardcoat liquid of the present invention is optional from polyolefin resin (polyolefinresin), as tygon (PE) or polypropylene (PP); Vibrin (polyester resin) is as polyethylene terephthalate (PET); Polyacrylate resin (polyacrylate resin) is as polymethylmethacrylate (PMMA); And the potpourri of above-mentioned these materials.
In resin material processing or manufacture process, when friction takes place for resin material and himself or other material, can produce static, airborne free dust is assembled from the teeth outwards, make expensive electronic package go to pot, or even light inflammable gas or powder and cause fire, so add antistatic agent its necessity is arranged.
Hardcoat liquid system of the present invention direct and resinous blending with antistatic agent gets through mixing processing again.The antistatic agent that can be used in the hardcoat liquid of the present invention there is no particular restriction, the personage that this skill is familiar with by system knows, for example ethoxy fatty acid glyceride class, quaternary ammonium compound compound, fatty amine analog derivative, epoxy resin (as polyethylene oxide), siloxane (siloxane) or other alcohol derivatives are as poly-ethanol ester, polyglycol ether etc.
According to a kind of instantiation of the present invention, above-mentioned first, second hardcoat layer is that hardcoat liquid is handled and formed with heating and the two curing mode of ultraviolet ray; And can be identical or different in order to the hardcoat liquid that forms this first and second hardcoat layer, it comprises antistatic agent, ultraviolet hardening resin and at least a resin that is selected from by group that thermoset resin, thermoplastic resin and composition thereof constitute.Preferably, above-mentioned hardcoat liquid comprises electrostatic agent, ultraviolet hardening resin and thermoset resin.
According to the present invention, be used to form the hardcoat liquid of the first hardcoat layer and the second hardcoat layer, can optionally comprise and be familiar with this operator's known additives, include but not limited to rigidizer (curingagent), light initiator (photo initiator), leveling agent, spreading agent or stabilization agent etc.
Above-mentioned rigidizer, be well-known to those skilled in the art, can make between molecule and the molecule material that produces chemical bond and form crosslinked (crosslinking), include but not limited to: diisocyanate (diisocyanate), polyisocyanate (polyisocyanate).
Above-mentioned smooth initiator is the material that can produce free radical after rayed, transmit initiated polymerization through free radical.Be applicable to that smooth initiator of the present invention there is no particular restriction, include but not limited to: benzophenone (benzophenone), diphenylhydroxyethanone (benzoin), 2-hydroxy-2-methyl-1-phenyl third-1-ketone (2-hydroxy-2-methyl-1-phenyl-propan-1-one), 2,2-dimethoxy-1,2-diphenyl second-1-ketone (2,2-dimethoxy-1,2-diphenylethan-1-one), 1-hydroxycyclohexylphenylketone (1-hydroxy cyclohexyl phenyl ketone), 2,4,6-trimethylbenzene first anilide diphenyl phosphine oxide (2,4, or they's potpourri 6-trimethylbenzoyl diphenyl phosphine oxide).Preferable light initiator is benzophenone or 1-hydroxycyclohexylphenylketone.
The diffusion layer of blooming of the present invention or anti-scratch layer can be according to the known any way manufacturings of the personage who is familiar with this skill, for example, and can be via the method manufacturing that comprises following steps:
(I) with components such as ultraviolet hardening resin, thermoset resin, solvent and antistatic agent, mix with additives known as required, form a colloidal state hardcoat liquid;
(II) this hardcoat liquid is coated substrate surface, to form a coating;
(III) will be somebody's turn to do through the base material that applies and send dryer to, evaporating solvent, be warming up to the solidification temperature that is higher than thermoset resin after, heated several minutes, carry out the heat curing polyreaction;
(IV) and then to this coating irradiation energy ray produce photopolymerization reaction to form the hardcoat layer, the intensity of energy-ray can be 100 to 1000 millijoules/square centimeter (mJ/cm
2), be preferably 200 to 800mJ/cm
2
If need, can repeat above steps, to obtain the hardcoat layer of plural layer.
Below be the specific embodiment of technical solution of the present invention, this only is an exemplary applications, can not be interpreted as the restriction to claim protection domain of the present invention.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within protection scope of the present invention.
" embodiment 1 "
1, the first hardcoat layer (diffusion layer)
Get one 250 milliliters vial, with solvent: 20 gram toluene, 6 gram butanone add in the vials.The mean grain size that adds 3 grams under high-speed stirred in regular turn is the acrylic particulate [MB30X-8 of 8 μ m, Japan's ponding changes into company], ultraviolet hardening resin: methacrylic acid-2-hydroxy methacrylate, methyl methacrylate, the monomer mixture of butyl acrylate and pentaerythritol triacrylate is totally 12 grams, thermoset resin: 10 gram acrylate resin [Eterac 7363-ts-50, Eternal company] (solid constituent about 50%), [Desmodur 3390 to add 1.0 gram rigidizers again, Bayer company] (solid constituent about 75%), 2.0 gram antistatic agent [GMB-36M-AS, Marubishi oilChem.Co., Ltd] (solid constituent about 20%), the light initiator: benzophenone and 1-hydroxycyclohexylphenylketone potpourri be totally 0.6 gram, and last infusion becomes solid constituent about 40% and the about 54.6 gram coating of gross weight.With RDS paint daubs #8 coating is coated on the PET base material [U34 that thickness is 188 μ m, Toray company] on the surface, through 100 ℃ of dryings after 1 minute, again with UV exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, energy-ray 200mJ/cm
2, make the first hardcoat layer (diffusion layer) that coating thickness is about 10 μ m after the drying in addition.
2, the second hardcoat layer (anti-scratch layer)
Get one 250 milliliters vial, with solvent: 16 gram toluene, 13 gram butanone add in the vials.Under high-speed stirred, add ultraviolet hardening resin in regular turn: methacrylic acid-2-hydroxy methacrylate, methyl methacrylate, the monomer mixture of butyl acrylate and pentaerythritol triacrylate is totally 8 grams, thermoset resin: 16 gram acrylate resin [Eterac 7363-ts-50, Eternal company] (solid constituent about 50%), [Desmodur 3390 to add 1.6 gram rigidizers again, Bayer company] (solid constituent about 75%), 1.6 gram antistatic agent [GMB-36M-AS, Marubishi oil Chem.Co., Ltd] (solid constituent about 20%), the light initiator: benzophenone and 1-hydroxycyclohexylphenylketone potpourri be totally 0.6 gram, and last infusion becomes solid constituent about 30% and the about 57.6 gram coating of gross weight.With RDS paint daubs #6 coating is coated on the above-mentioned prepared PET base material opposite side surface that scribbles the first hardcoat layer, through 100 ℃ of dryings after 1 minute, again with UV exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, energy-ray 200mJ/cm
2, make the second hardcoat layer that coating thickness is about 5 μ m (anti-scratch layer) after the drying in addition.The above-mentioned anti-scratch blooming that makes, adding up to total film thickness is 202 μ m, carries out every attribute testing, test gained result is as shown in the following Table 1.
Comparative example 1
With thickness is the commercially available protectiveness diffusion barrier [D117VGZ, Tsujiden company] of 200 μ m, carries out every attribute testing, and test gained result as shown in the following Table 1.
Comparative example 2
With thickness is the commercially available protectiveness diffusion barrier [PBS072, Keiwa company] of 200 μ m, carries out every attribute testing, and test gained result as shown in the following Table 1.
Comparative example 3
With thickness is the commercially available protectiveness diffusion barrier [JS-153R, SKC company] of 205 μ m, carries out every attribute testing, and test gained result as shown in the following Table 1.
Method of testing:
(1) test of transparent material brightness.Utilize NDH 5000W haze meter [Japanese electric look company],, measure the mist degree (Hz) and the total light transmittance (Tt) of testing sample, shown in the following tabulation 1 of test gained result according to JIS K7136 standard method.
(2) pencil hardness test.Utilize pencil scratching tester [Elcometer 3086, SCRATCHBOY], (2H 3H) with the pencil hardness on JISK-5400 method test testing sample surface, tests shown in the following tabulation 1 of gained result with the Mitsubishi pencil.
(3) surface resistivity test.Utilize teraohmmeter [East Asia TOADKK company, SM8220﹠amp; SME-8310,500V] measurement testing sample surface resistivity.Test environment is as follows: 23 ± 2 ℃, and 55 ± 5%RH, shown in the following tabulation 1 of test gained result, unit: Ω/ (square).
(4) Abrasion Resistance test.(area length and width 20mm * 20mm) goes up and pastes glutinous 3M BEF-III-10T diaphragm (the length and width 20mm * 20mm) that puts in 600 g weight platform to utilize linear abrasion wear test machine [TABER 5750], directly test the weight scratch resistance ability of the anti-scratch layer of testing sample with its prism microstructure layer, with test trip 2inch, the speed of 10cycle/min is carried out 10cycles scratch resistance test, shown in the following tabulation 1 of scratch resistance test gained result.
(5) camber test.Testing sample is cut into the smooth diaphragm of length and width 100mm * 100mm, places 120 ℃ of baking ovens after 10 minutes, take out and be statically placed in room temperature, rise again to room temperature, with warpage degree (the record unit: millimeter (mm) of four jiaos of clearance gauge measuring diaphragms up to diaphragm; Recording mode: for example, the warpage degree at four angles is 0, is designated as 0; 0; 0; 0), so as to the heat-resisting and anti-warpage performance of assessment testing sample, shown in the following tabulation 1 of camber test gained result.
Table 1
| Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Mist degree Hz (%) | 48.47 | 45.71 | 61.71 | 61.44 |
| Total light transmittance Tt (%) | 91.40 | 91.18 | 93.27 | 93.00 |
| Pencil hardness (diffusion layer) | 3H | 2H | 2H | 2H |
| Pencil hardness (anti-scratch layer) | 3H | 3H | 2H | 2H |
| Surface resistivity Ω/ (diffusion layer) | 6.9×10 12 | 2.3×10 11 | 7.4×10 15 | 6.3×10 16 |
| Surface resistivity Ω/ (anti-scratch layer) | 9.6×10 11 | 1.8×10 12 | 1.3×10 12 | 2.6×10 13 |
| Anti-scratch layer Abrasion Resistance test | No scratch | No scratch | Serious scratch | Serious scratch |
| Camber test (mm) (120 ℃, 10min) | 0.0；0.0； 0.0；0.0 | 0.1；0.1； 0.1；0.1 | 0.1；0.1； 0.1；0.1 | 0.2；0.2； 0.2；0.2 |
By embodiment and comparative example as can be known, anti-scratch blooming of the present invention has good resistance static behaviour and high rigidity characteristic, and surfacing do not have warpage, thereby can avoid optical property to be affected.
Claims (17)
1. anti-scratch blooming, comprise three-decker, the middle layer is a transparent base, the upper and lower of transparent base is the two-layer hardcoat layer that is formed through solidifying processing by hardcoat liquid, and the first hardcoat layer that is positioned at the top is a diffusion layer, and the second hardcoat layer that is positioned at the below is anti-scratch layer, the upper surface of diffusion layer has concaveconvex structure, the lower surface of anti-scratch layer is a smooth surface, it is characterized in that: measure according to JIS K7136 standard method, this blooming has 20% to 90% mist degree; The surface resistivity of the described first hardcoat layer and the second hardcoat layer is between 10
8To 10
12Ω/ measures according to JIS K5400 standard method, and this two-layer hardcoat layer all has 3H or the above pencil hardness of 3H; And the hardcoat liquid that solidify to form the first hardcoat layer comprises resin and organic granular, and the weight of described organic granular accounts for 10～30Wt% of the first hardcoat layer resinous principle general assembly (TW).
2. anti-scratch blooming according to claim 1 is characterized in that: the described first hardcoat layer and the second hardcoat layer are the hardcoat layers that hardcoat liquid is formed with the two curing modes processing of heating and ultraviolet ray; Described hardcoat liquid comprises antistatic agent, ultraviolet hardening resin and at least a resin that is selected from group that thermoset resin, thermoplastic resin and composition thereof constitute, and is identical or different in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
3. anti-scratch blooming according to claim 1 is characterized in that: described transparent base is plastics or glass.
4. anti-scratch blooming according to claim 1 is characterized in that: the thickness of described diffusion layer is 5 microns to 20 microns.
5. anti-scratch blooming according to claim 1 is characterized in that: the thickness of described anti-scratch layer is 1 micron to 10 microns.
6. anti-scratch blooming according to claim 1 is characterized in that: described organic granular is acrylate resin, amido formate resin, silicone resin, or both or three's potpourri in the middle of them.
7. anti-scratch blooming according to claim 1 is characterized in that: the particle diameter of described organic granular is 2 microns to 30 microns.
8. anti-scratch blooming according to claim 2 is characterized in that: described antistatic agent is selected from ethoxy fatty acid glyceride, quaternary ammonium compound compound, fatty amine analog derivative, polyethylene oxide, siloxane or alcohol derivatives.
9. anti-scratch blooming according to claim 2 is characterized in that: described ultraviolet hardening resin comprises at least a acrylic monomer or acrylic ester monomer with one or more functional groups.
10. anti-scratch blooming according to claim 9 is characterized in that: described acrylic ester monomer is methacrylate, amido formate acrylate, polyester acrylate or epoxy acrylate.
11. anti-scratch blooming according to claim 9 is characterized in that: described ultraviolet hardening resin further comprises the acrylic ester oligomer.
12. anti-scratch blooming according to claim 2 is characterized in that: described thermoset resin is selected from the group that polystyrene resin, vibrin, epoxy resin, polyacrylate resin, polycarbonate and composition thereof are formed.
13. anti-scratch blooming according to claim 2 is characterized in that: further comprise adjuvant separately in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
14. anti-scratch blooming according to claim 2 is characterized in that: this blooming is a kind of anti-scratch blooming that does not have warpage, and its first hardcoat layer and the second hardcoat layer are the hardcoat layers that hardcoat liquid is formed with the two curing modes processing of heating and ultraviolet ray; Described hardcoat liquid comprises antistatic agent, ultraviolet hardening resin and thermoset resin, and identical or different in order to the hardcoat liquid that forms the first hardcoat layer and the second hardcoat layer.
15. anti-scratch blooming according to claim 14 is characterized in that: described thermoset resin is selected from the group that polystyrene resin, vibrin, epoxy resin, polyacrylate resin, polycarbonate and composition thereof are formed.
16. according to claim 1 or 14 described anti-scratch bloomings, it is characterized in that: this blooming has 85% to 95% light penetration degree.
17. the purposes of anti-scratch blooming is characterized in that: with described any one the anti-scratch blooming of claim 1～16, the backlight module that is used for display is as the protectiveness diffusion barrier.
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| CNB200610096389XA CN100426008C (en) | 2006-09-22 | 2006-09-22 | Antiscraping optical film and use thereof |
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| CNB200610096389XA CN100426008C (en) | 2006-09-22 | 2006-09-22 | Antiscraping optical film and use thereof |
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| CN100426008C true CN100426008C (en) | 2008-10-15 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5406615B2 (en) * | 2009-07-15 | 2014-02-05 | 日東電工株式会社 | Transparent film and surface protective film using the film |
| CN103057024B (en) * | 2013-01-22 | 2015-06-03 | 桂林电子科技大学 | Photodiffusion sheet of epoxy resin composite coating with specific micro-phase structure and preparation method of photodiffusion sheet |
| CN106842593A (en) * | 2016-12-23 | 2017-06-13 | 张家港康得新光电材料有限公司 | The preparation method of 2D/3D switchable display devices |
| KR102105135B1 (en) * | 2017-08-10 | 2020-04-27 | 케이와 인코포레이티드 | A buffer sheet and a flat panel display |
| CN108995257B (en) * | 2018-08-24 | 2024-04-09 | 宁波瑞凌新能源材料研究院有限公司 | Radiation refrigeration film and preparation method thereof |
| CN116546754A (en) * | 2023-07-06 | 2023-08-04 | 深圳市锐舞数码科技有限公司 | Electronic equipment protection shell and manufacturing method thereof |
| CN117250677B (en) * | 2023-11-13 | 2024-02-06 | 苏州弘德光电材料科技有限公司 | Brightness enhancement film, preparation method thereof and display device |
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| US6503627B1 (en) * | 1997-05-26 | 2003-01-07 | Dai Nippon Printing Co., Ltd. | Antistatic hard coat film |
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