CN203275689U - Compound optical reflecting film - Google Patents
Compound optical reflecting film Download PDFInfo
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- CN203275689U CN203275689U CN2013201847938U CN201320184793U CN203275689U CN 203275689 U CN203275689 U CN 203275689U CN 2013201847938 U CN2013201847938 U CN 2013201847938U CN 201320184793 U CN201320184793 U CN 201320184793U CN 203275689 U CN203275689 U CN 203275689U
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Abstract
The utility model relates to the technical field of optical thin films and particularly relates to a compound optical reflecting film applied in a backlight source system. In order to overcome the defects that a conventional optical reflecting film has low reflectivity and is easy to deform, the utility model provides an optical reflecting film. The optical reflecting film comprises a transparent film sheet and a reflecting film sheet, wherein the two film sheets are bonded through a bonding agent. A reflecting coating is coated on the other surface of the reflecting film sheet. The compound optical reflecting film provided by the utility model is good in size stability and relatively high in reflectivity, and is not easy to warp and deform.
Description
Technical field
The utility model relates to optical film technology field, is specifically related to a kind of complex optics reflectance coating that is applied to back light source system.
Background technology
Lcd technology (LCD) is to use at present one of the most general display technique, and will be within one period in occupation of the mainstream technology status in flat pannel display field.Liquid crystal molecule itself is not luminous, and image or character that it shows are the results that its light that backlight is sent is modulated, and backlight is the significant components that determines the liquid crystal display performance, and the brightness of backlight has directly determined the display brightness on LCD surface.
The liquid crystal backlight system mainly is comprised of light source, light guide plate, all kinds of blooming piece and structural member, and its developing trend is in diversification and the lighting of size, and requires very high to luminosity.Type of backlight mainly contains EL sheet (EL), cold cathode fluorescent tube (CCFL), light emitting diode (LED) etc. at present, is divided into side-light type and end backlight type according to its position difference.Along with the development of LCD module, the side-light type CCFL backlight of high brightness slimming becomes main flow, but because power consumption is large, can not satisfy portable message product and energy-conservation requirement, therefore do not increasing in the power consumption situation, how improving back light source brightness and then increasing LCD brightness has become one of Main Trends of The Development.
The main blooming piece of liquid crystal backlight system comprises reflectance coating, diffusion barrier and brightness enhancement film, the effect of reflectance coating is exactly that the light that light source sends is reflexed to not loss the light direction of backlight efficiently and as far as possible, thereby reduction light loss, reach the raising backlight illumination, perhaps reduce the purpose of power consumption.
How improving the optical property of reflectance coating, improve its reflectivity, make the light that light source sends can at utmost be utilized and reduce loss, is the important topic that present this field need to solve.And in actual applications, also requiring reflectance coating in the situation that use for a long time, uvioresistant performance is stable; When thermograde was larger, reflectance coating size deformation difference was little, did not affect its assembling and used.
Summary of the invention
Lower in order to overcome existing optical reflectance coating reflectivity, hold yielding defective, the invention provides a kind of complex optics reflectance coating and preparation method thereof, the good stability of the dimension of described complex optics reflectance coating, be difficult for occuring buckling deformation, have higher reflectivity, its preparation method technique is simple, easy operating.
In order to solve the problems of the technologies described above, the invention provides following technical proposals:
A kind of complex optics reflectance coating, described reflectance coating comprises that transparent membrane (or is called the bottom transparent membrane, also can be described as bottom film sheet) and reflection diaphragm, described reflection diaphragm is in the same place by polymer adhesive with transparent membrane, and the another side of described reflection diaphragm is coated with reflectance coating; Described bonding agent is by phenolics, inorganic particle filler and solvent composition.Described bonding agent forms adhesive phase.
The thickness of described transparent membrane is 100-250 μ m, and the thickness of described reflection diaphragm is 75-250 μ m.Preferably, the thickness of described transparent membrane is 120-150 μ m, 170-230 μ m, 188 μ m or 200 μ m; The thickness of described reflection diaphragm is 75-120 μ m, 100-170 μ m, 180-230 μ m, 150 μ m, 188 μ m or 200 μ m.
Further, described reflection diaphragm is the white reflection film sheet, and described reflectance coating is the uvioresistant highly-reflective coating.That is, described reflectance coating has higher reflectivity and anti-ultraviolet function.
Further, the material of described uvioresistant highly-reflective coating comprises silane cross-linked polyolefin, and zinc paste and/or titania, the content of zinc paste and/or titania are the 50-70%(weight percentage).
Add zinc paste and the titania of high level in above-mentioned uvioresistant highly-reflective coating, can increase reflecting effect, improve reflectivity.The weight ratio of titania and zinc paste is 2-4:1.
Further, in described bonding agent, the weight ratio of phenolics, inorganic particle filler and solvent is 100:80-150:40-80.
The preferred thermosetting phenolic resin of described phenolics, further preferred high ortho position thermosetting phenolic resin; Described inorganic particle filler (or be called for short inorganic filler) is the combination of a kind of in zirconium powder, iron powder, carbon dust, boron powder, silica flour, boron carbide and silit or at least two kinds; Solvent is selected from ethyl acetate, or ethanol.During use, phenolics and inorganic particle filler are joined in solvent, normal temperature mixes, and namely gets bonding agent (or claiming composite adhesive).At room temperature, due to the polarity effect of phenolics, composite adhesive has stronger cohesive strength, and in hot environment, because inorganic filler and phenolics react, formation can keep the rock-steady structure of its cohesive strength.Therefore, composite reflective film provided by the invention can high temperature resistantly use, and due to the dimensionally stable effect of bonding agent and bottom film sheet, reflectance coating is not yielding, can make backlight module in the situation that have the thermograde environment and can keep its size and stable mechanical performance yet.
Described high ortho position thermosetting phenolic resin can be prepared as follows: phenol and formaldehyde react under the catalysis of zinc paste; Carry out vacuum dehydration after reaction finishes, when the gelling temp of system is 80 ℃, gel time gets product when being 100-150s; The molfraction ratio of described phenol, formaldehyde and zinc paste can be 1:1.2-1.8:0.03-0.06.
Further, the material of described white reflection film sheet comprises polyethylene terephthalate (PET), and described material internal Uniform Dispersion has the 10-25%(weight percentage) the nano modified inorganic filler; The material of described bottom transparent membrane is selected from polycarbonate (PC), polypropylene (PP) or polyethylene terephthalate (PET).
Described nano modified inorganic filler comprises inorganic particulate, and described inorganic particulate outside surface has the top layer that the modification clad material forms.Described inorganic particulate is selected from the combination of a kind of in titania, barium sulphate, calcium carbonate, zinc paste or at least two kinds, described modification clad material is silicon dioxide and/or aluminium oxide, clad material weight is the 0.5-1% of inorganic particulate, and described percentage composition is weight percentage.The preferred PET of material of described bottom transparent membrane, the mechanical property of PET is good, and thickness is suitable and percent thermal shrinkage is low, good stability of the dimension.
Further, also be added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber (being ultraviolet light absorber) in described uvioresistant highly-reflective coating, described percentage composition is weight percentage.Utilize the cooperative effect of above-mentioned light stabilizer and ultraviolet absorber, reach efficient UVResistant effect.
Further, the material of described bottom transparent membrane is selected from PET, PP or PC; Described bonding agent forms composite adhesive by high ortho position thermosetting phenolic resin, inorganic particle filler and solvent composition; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste; Described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
Further, in described composite adhesive, the weight ratio of high ortho position thermosetting phenolic resin, inorganic particle filler and solvent is 100:80-150:40-80; In described uvioresistant highly-reflective coating, the content of titania and zinc paste is the 50-70%(weight percentage).Preferably, in described composite adhesive, the weight ratio of high ortho position thermosetting phenolic resin, inorganic particle filler and solvent is 100:80:40,100:100:50,100:120:60, or 100:150:80.
Further, the material of described bottom transparent membrane and white reflection film sheet is PET, and the inner Uniform Dispersion of described white reflection film sheet has nano modification titania or barium sulphate, and the modification clad material is silicon dioxide and/or aluminium oxide.
A kind of preparation method of above-mentioned complex optics reflectance coating, described preparation method comprises the steps:
(1) with the polyester base-material, white master material and foaming concentrate after crystallization, drying, enter the extruder fusion plastification, after filtration, curtain coating, cooling, form slab;
(2) slab that makes in step (1) is carried out longitudinal stretching, cross directional stretch, draw ratio is 3-4;
(3) oriented film that makes in step (2) is carried out corona treatment when drawing, film surface is activated, increase moistened surface tension force, obtain reflection diaphragm;
(4) reflection diaphragm that makes in step (3) is cut into film in a narrow margin, unreel rear coating adhesive, compound with the bottom transparent membrane, another surface-coated reflectance coating of reflection diaphragm, oven dry namely makes described complex optics reflectance coating.
Above-mentioned polyester base-material, white master material, foaming concentrate and bottom transparent membrane can directly be buied on market, also can prepare voluntarily according to demand, add foaming concentrate in reflection diaphragm, can improve its reflectivity, simultaneously can also reduce diaphragm density, Cost reduction; Reflectance coating material and bonding agent also can prepare voluntarily according to the raw material proportioning.
Compared with prior art, the reflection diaphragm of reflectance coating provided by the invention and bottom film sheet have excellent dimensional stability, even buckling deformation does not occur diaphragm yet under high temperature or larger thermograde; Its uvioresistant highly-reflective coating has good UVResistant effect, and the high-load inorganic particulate in reflectance coating can improve the reflectivity of diaphragm, also can improve the briliancy of the backlight module that composite reflective film assembles simultaneously.Preparation method's technique of described reflectance coating is simple, easy operating.
Description of drawings
Fig. 1 is the structural representation of complex optics reflectance coating provided by the invention.
Wherein, 1 is the uvioresistant highly-reflective coating, and 2 is the white reflection film sheet, and 3 is adhesive phase, and 4 is the bottom transparent membrane.
Embodiment
As shown in Figure 1, the invention provides a kind of complex optics reflectance coating, described reflectance coating comprises bottom transparent membrane 4, the one side of described bottom transparent membrane 4 is provided with white reflection film sheet 2, the coated on one side of described white reflection film sheet 2 has uvioresistant highly-reflective coating 1, another side is mutually compound with bottom transparent membrane 4 by bonding agent, and described bonding agent forms adhesive phase 3.
A kind of preparation method of complex optics reflectance coating comprises the steps:
(1) with the polyester base-material, white master material and foaming concentrate after crystallization, drying, enter single screw extrusion machine or double screw extrusion machine fusion plastification; By after the melt pipe filtrator, be cast to the chilling roller through clothes hanger type slit die head again, polyester fondant is quickly cooled to it below glass temperature on the chilling roller of uniform rotation, forms the slab of the even thickness of glassy state;
(2) adopt longitudinal stretching machine to carry out longitudinal stretching under heated condition the slab that makes in step (1), draw ratio is 3-4; Enter afterwards the horizontal baking oven that draws again, it is carried out the stretching of Width, ratio is consistent with the longitudinal stretching ratio;
(3) oriented film that makes in step (2) is carried out corona treatment when drawing, film surface is activated, increase moistened surface tension force, obtain reflection diaphragm;
(4) reflection diaphragm that makes in step (3) is cut into film in a narrow margin, unreel rear coating adhesive, compound with the bottom transparent membrane, another surface-coated reflectance coating of reflection diaphragm, oven dry can make final finished (described complex optics reflectance coating).
Adopt the performance of following method test compound optical reflectance coating:
Reflectivity: the reflectivity of film is higher, performance is better, the ColorQuest XE spectrophotometric color measurement instrument that employing Hunterlab company produces, under D65 light source condition, by its reflectivity of integrating sphere d/8 ° structured testing, reflectivity data be 400-700nm every the weighted mean value of the reflectivity of 10nm wavelength, the energy distribution curve of the corresponding D65 light source of weights.
Briliancy: assemble diaphragm respectively in the straight-down negative of 31.5 inches and side entrance back module, carry out the briliancy test, instrument is the BM-7A brightness photometer that Japan opens up Pu Kang (Topcon) company, the manufacturer of test platform is Suzhou Fu Shida scientific instrument company limited, model is FS-5500G, in the 500mm distance, 9 briliancy mean values that under 1 ° of visual angle, test is backlight when normally lighting; Each test all cuts 3 diaphragms, averages after the test briliancy.
The planarization of film: 1. cut out one section film and be placed on horizontal glass, if planarization is good, film and glass docile, can't see heaving of the sea; 2. film is cut off along the axis, if planarization is good, do not observed the gap when two halves film is close together again; 3. film was launched after curling a period of time, film is not answered warpage or crimping.
Angularity: according to GBT25257-2010 optical functional film angularity assay method, finished films is carried out the angularity test.Each sample is chosen 3 large small samples of A4 and is carried out the angularity test, and sample is placed on smooth glass test platform, with the maximum height of steel ruler test perk.
Below in conjunction with embodiment, the present invention is described in further detail, hindered amine light stabilizer in embodiment (HALS) can be selected Tinuvin770, Tinuvin622, the Tinuvin744 of Switzerland vapour Ba-Jia Ji company, perhaps Japan three changes into Sanol770, the Sanol744 etc. of company altogether, benzotriazole UV absorbers can be selected UV326, UV327, UV328, UV329 etc.
A kind of complex optics reflectance coating, comprise the bottom transparent membrane, the one side of described bottom transparent membrane is provided with the white reflection film sheet, the coated on one side of described white reflection film sheet has the uvioresistant highly-reflective coating, another side is mutually compound with the bottom transparent membrane by bonding agent, and described bonding agent forms adhesive phase.
The material of described bottom transparent membrane is the high sizing of PET for high sticking PET(), thickness is 120 μ m, the thickness of described reflection diaphragm is 100 μ m; Bonding agent is the compound of high ortho position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1) and alcohol solvent, and its weight ratio is 100:120:60; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste is 50%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
A kind of complex optics reflectance coating, comprise the bottom transparent membrane, the one side of described bottom transparent membrane is provided with the white reflection film sheet, the coated on one side of described white reflection film sheet has the uvioresistant highly-reflective coating, another side is mutually compound with the bottom transparent membrane by bonding agent, and described bonding agent forms adhesive phase.
The material of described bottom transparent membrane is PC, and thickness is 170 μ m, and the thickness of described reflection diaphragm is 120 μ m; Bonding agent is the compound of high ortho position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1) and ethyl acetate solvent, and its weight ratio is 100:80:40; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste is 60%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
A kind of complex optics reflectance coating, comprise the bottom transparent membrane, the one side of described bottom transparent membrane is provided with the white reflection film sheet, the coated on one side of described white reflection film sheet has the uvioresistant highly-reflective coating, another side is mutually compound with the bottom transparent membrane by bonding agent, and described bonding agent forms adhesive phase.
The material of described bottom transparent membrane is PP, thickness is 230 μ m, the thickness of described reflection diaphragm is 200 μ m, bonding agent is that high ortho position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1) form with ethyl acetate solvent, and its weight ratio is 100:150:80; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste is 70%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
A kind of complex optics reflectance coating, described reflectance coating comprises transparent membrane and reflection diaphragm, described reflection diaphragm is in the same place by polymer adhesive with transparent membrane.Described bonding agent forms adhesive phase.The another side of described reflection diaphragm is coated with reflectance coating.
The material of described bottom transparent membrane is PC, and thickness is 100 μ m, and the thickness of described reflection diaphragm is 75 μ m; Bonding agent is the compound of high ortho position thermosetting phenolic resin, iron powder and ethyl acetate solvent, and its weight ratio is 100:150:80; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste (weight ratio of titania and zinc paste is 2:1) is 60%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
Embodiment 5
A kind of complex optics reflectance coating, described reflectance coating comprise transparent membrane and white reflection film sheet, and described white reflection film sheet is in the same place by polymer adhesive with transparent membrane.Described bonding agent forms adhesive phase.The another side of described reflection diaphragm is coated with reflectance coating.
The material of described bottom transparent membrane is PP, and thickness is 250 μ m, and the thickness of described reflection diaphragm is 250 μ m; Bonding agent is the compound of high ortho position thermosetting phenolic resin, boron carbide and silit (boron carbide and silit mix according to the weight ratio of 2:1) and alcohol solvent, and its weight ratio is 100:120:60; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste (weight ratio of titania and zinc paste is 3:1) is 50%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
Embodiment 6
A kind of complex optics reflectance coating, described reflectance coating comprise transparent membrane and white reflection film sheet, and described white reflection film sheet is in the same place by polymer adhesive with transparent membrane.The another side of described reflection diaphragm is coated with the uvioresistant highly-reflective coating.
The material of described bottom transparent membrane is PET, and thickness is 150 μ m, and the thickness of described reflection diaphragm is 150 μ m; Bonding agent is the compound of high ortho position thermosetting phenolic resin, carbon dust and silica flour (carbon dust and silica flour mix according to the weight ratio of 3:1) and alcohol solvent, and its weight ratio is 100:80:40; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, the content of titania and zinc paste (weight ratio of titania and zinc paste is 4:1) is 50%, and described uvioresistant highly-reflective coating also is added with 0.3% hindered amine light stabilizer and 0.3% benzotriazole ultraviolet absorber.
Embodiment 7
A kind of complex optics reflectance coating comprises bottom transparent membrane and white reflection film sheet, and described white reflection film sheet is mutually compound with the bottom transparent membrane by bonding agent, and the another side of described white reflection film sheet is coated with the uvioresistant highly-reflective coating.
The material of described bottom transparent membrane is PET, thickness is 170 μ m, the thickness of described reflection diaphragm is 180 μ m, bonding agent is comprised of with ethyl acetate solvent thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1), and its weight ratio is 100:100:50; The inner Uniform Dispersion of described white reflection film sheet has 10% nano modification titania, and the surface modification clad material of titania is the potpourri of silicon dioxide and aluminium oxide, and clad material weight is 1% of titania; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, and the content of titania and zinc paste is 50%, and described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
Embodiment 8
A kind of complex optics reflectance coating comprises bottom transparent membrane and white reflection film sheet, and described white reflection film sheet is mutually compound with the bottom transparent membrane by bonding agent, and the another side of described white reflection film sheet is coated with the uvioresistant highly-reflective coating.Described bonding agent forms adhesive phase.
The material of described bottom transparent membrane is PP, thickness is 200 μ m, the thickness of described reflection diaphragm is 230 μ m, bonding agent is comprised of with ethyl acetate solvent high ortho position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1), and its weight ratio is 100:80:80; The inner Uniform Dispersion of described white reflection film sheet has 25% nano modification barium sulphate, and the modification clad material of described barium sulphate is aluminium oxide, and clad material weight is 0.5% of barium sulphate; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, and the content of titania and zinc paste is 60%, and described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
Embodiment 9
A kind of complex optics reflectance coating comprises bottom transparent membrane and white reflection film sheet, and described white reflection film sheet is mutually compound with the bottom transparent membrane by bonding agent, and the another side of described white reflection film sheet is coated with the uvioresistant highly-reflective coating.Described bonding agent forms adhesive phase.
The material of described bottom transparent membrane is PC, thickness is 188 μ m, the thickness of described reflection diaphragm is 188 μ m, bonding agent is comprised of with ethyl acetate solvent high ortho position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silica flour mix according to the weight ratio of 3:1:1), and its weight ratio is 100:150:60; The inner Uniform Dispersion of described white reflection film sheet has 15% nano modification calcium carbonate, and the modification clad material of described calcium carbonate is silicon dioxide; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, and the content of titania and zinc paste is 70%, and described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
Comparative Examples 1
Prepare according to the method described above the complex optics reflectance coating, the material of described bottom transparent membrane is PET, and thickness is 188 μ m, and the thickness of described reflection diaphragm is 188 μ m, and described bonding agent is epoxy resin; The inner Uniform Dispersion of described white reflection film sheet has nano modification titania, and the modification clad material of described titania is silicon dioxide and aluminium oxide; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, and the content of titania and zinc paste is 50%, and described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
Described complex optics reflectance coating is selected common adhesive, and dimensional stability is relatively poor, and the performance test results sees Table 1.
Comparative Examples 2
Prepare according to the method described above the complex optics reflectance coating, the material of described bottom transparent membrane is PET, and thickness is 188 μ m, and the thickness of described reflection diaphragm is 188 μ m, bonding agent is comprised of high ortho position thermosetting phenolic resin, borosilicate powder and ethyl acetate solvent, and its weight ratio is 100:100:50; The inner Uniform Dispersion of described white reflection film sheet has nano modification titania, and the modification clad material is silicon dioxide and aluminium oxide; Described uvioresistant highly-reflective coating is the compound of silane cross-linked polyolefin and titania and zinc paste, and the content of titania and zinc paste is 30%, and described uvioresistant highly-reflective coating also is added with hindered amine light stabilizer and benzotriazole ultraviolet absorber.
In described reflectance coating uvioresistant highly-reflective coating, the content of titania and zinc paste is lower, and reflecting effect is relatively poor, and the performance test results sees Table 1.
Comparative Examples 3
The E6D6 type reflectance coating that Japan Toray company produces.
The complex optics reflectance coating performance test table that table 1 embodiment of the present invention and Comparative Examples provide:
Can draw according to the reflectance coating the performance test results in table 1, the reflectance coating that complex optics reflectance coating provided by the invention provides with respect to Comparative Examples has higher reflectivity; Angularity data by Comparative Examples 1 and Comparative Examples 3 can draw, and reflectance coating planarization provided by the invention is better, and the angularity data are lower; Adopted bonding agent provided by the invention in Comparative Examples 2, so the angularity data are also lower.Aspect briliancy, reflectance coating develops so far, and the space that briliancy promotes is very little, generally promotes 2-3% and has belonged to very significant effect.The luminance range of the complex optics reflectance coating that the embodiment of the present application 1 to 9 provides is 2667 to 2787, and mean value is 2713, and this mean value is compared with the brightness value of the reflectance coating that Comparative Examples 2 and Comparative Examples 3 provide, and has improved 3.8%.The technical scheme that Comparative Examples 1 provides is compared with the described technical scheme of the application, has just adopted different bonding agents, thus not obviously decline of brightness value, but the angularity data are higher.In sum, complex optics reflectance coating provided by the invention has combination property preferably.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and all is encompassed in the scope of the claims of the present invention.
Claims (3)
1. a complex optics reflectance coating, is characterized in that, described reflectance coating comprises transparent membrane and reflection diaphragm, and described reflection diaphragm is in the same place by polymer adhesive with transparent membrane, and the another side of described reflection diaphragm is coated with reflectance coating; The thickness of described transparent membrane is 100-250 μ m, and the thickness of described reflection diaphragm is 75-250 μ m.
2. complex optics reflectance coating according to claim 1, is characterized in that, described reflection diaphragm is the white reflection film sheet.
3. complex optics reflectance coating according to claim 2, is characterized in that, described reflectance coating is the uvioresistant highly-reflective coating.
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Granted publication date: 20131106 Termination date: 20140412 |