CN104375225A - Scratch-resistant optical diffusion film and method for manufacturing same - Google Patents
Scratch-resistant optical diffusion film and method for manufacturing same Download PDFInfo
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- CN104375225A CN104375225A CN201410738409.3A CN201410738409A CN104375225A CN 104375225 A CN104375225 A CN 104375225A CN 201410738409 A CN201410738409 A CN 201410738409A CN 104375225 A CN104375225 A CN 104375225A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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Abstract
The invention discloses a scratch-resistant optical diffusion film and a method for manufacturing the same. The scratch-resistant optical diffusion film comprises a first scratch-resistant layer, a first diffusion layer, a core layer, a second diffusion layer and a second scratch-resistant layer which are sequentially arranged and are compounded with one another. The thickness of the first diffusion layer is identical to that of the second diffusion layer, and the thickness of the first scratch-resistant layer is identical to that of the second scratch-resistant layer; the total thickness of the scratch-resistant optical diffusion film ranges from 0.050mm to 0.350mm; the scratch-resistant layers are made of polyester and scratch-resistant hard resin; the diffusion layers are made of polyester and diffusion particles; the core layer is made of polyethylene terephthalate. The method includes performing five-layer co-extrusion on the scratch-resistant layers, the diffusion layers and the core layer; manufacturing the scratch-resistant optical diffusion film by means of two-way stretching. The scratch-resistant optical diffusion film and the method have the advantages that the light transmittance of the manufactured scratch-resistant optical diffusion film is higher than or equal to 90%, the haze of the manufactured scratch-resistant optical diffusion film is higher than or equal to 90%, and the hardness of the manufactured scratch-resistant optical diffusion film is higher than or equal to 3H; the scratch-resistant optical diffusion film can be widely applied to manufacturing devices such as liquid crystal display and back light module components, advertising lamp boxes and illuminating lamps.
Description
Technical field
The invention belongs to optical thin film and preparation thereof, relate to a kind of scratch resistant optical diffusion and preparation method thereof.The scratch resistant optical diffusion of the present invention is suitable for the optics diffusion material made liquid crystal display, backlight module parts, advertising lamp box, lighting etc. and need in the device of light source.
Background technology
Optical diffusion membrane is (also known as optical diffusion, optical diffusion film, be called for short diffusion barrier) be widely used in liquid crystal display, advertising lamp box, lighting etc. and need in the device of light source, particularly in liquid crystal indicator, diffusion barrier is the key components and parts in backlight module.The Main Function of optical diffusion promotes light luminance, and the soft dispersion of light that light guide plate is received, for display provides a uniform area source, play the effect of widening visual angle.With regard to liquid crystal display, in its optics module, need two panels optical diffusion, be called diffusion barrier and lower diffusion barrier.Wherein descend diffusion barrier near light guide plate, major function is light harvesting, covers light guide plate printing net-point or line source, fluorescent tube shadow; Upper diffusion barrier tool height light penetration capacity, can improve visual angle, increase light source mildness, has the function of diffusion and protection prismatic lens concurrently.It is not high that diffusion barrier is compared to material cost proportion shared other blooming piece (as prismatic lens), but under high brightness specification requirement, the uniformity coefficient of display screen and brightness are mainly subject to the qualitative effects of diffusion barrier.The object of diffusion barrier evenly converts linear light sorurce or point source of light to area source, and its action principle utilizes light to pass in the medium with different refractivity, and light produces the phenomenon of many refractions, reflection, scattering, causes the effect that optics spreads.
At present, the method for making of diffusion barrier adopts the wet coating mode of scattering particle type usually, normally by scattering particle and binder resin, as polyacrylic resin [or claim acryl resin, polymethyl methacrylate (PMMA)] potpourri be coated on the surface of base material transparent optical level polyester film, coating removes solvent through hyperthermia drying, then through UV-cured and be formed light diffusion layer and base material composition optical diffusion film.This scattering particle type cloth of coating-type diffusion barrier has certain transmittance and mist degree, and its presentation quality is good.Such diffusion barrier mainly relies on the scattering particle of the different size of random scatter in coat to carry out scattering to the incident ray entered in coating, make the direction stochastic distribution of emergent ray, thus make the nonuniform illumination homogenising of incident light, and covering effect is played to the flaw of the backlight module element below diffusion barrier.In addition, in coat, the top of some larger-size scattering particles protrudes from coating surface, forms curved surface light to certain optically focused effect, makes diffusion barrier have certain light gathering.Simultaneously; the diffusion layer caused to prevent diffusion barrier to be in use scraped off destroys, and usually also can add stiffening aids in diffusion layer, make stiffening aids carry out cross-linking reaction by the mode of ultraviolet light polymerization; form hardened layer on diffusion barrier surface, play anti-scratch effect.
The main mode of production of current diffusion barrier all can relate to solvent coating and these two kinds of techniques of ultraviolet light polymerization, harmful effect is caused to the healthy meeting of environment and practitioner, ultraviolet light polymerization also can the electric energy of at substantial, and above-mentioned factor is all unfavorable for the mass industrialized production of diffusion barrier.Meanwhile, the diffusion uniformity coefficient of such diffusion barrier, by the multiple restriction of the factors such as polyester base film quality, diffusion particle coating fluid and coating process, is difficult to control effectively to product quality.
Along with the development of science and technology and the raising day by day of people's environmental consciousness, while the performance requirement of people to optical diffusion membrane improves increasingly, also more focus on the environmental benefit in production and use procedure.Therefore, under the prerequisite of environmental protection, the uniform scratch resistant diffusion barrier of High-efficient Production nephelometric turbidity unit is the important topic that current field of liquid crystal display needs to solve.
Summary of the invention
Object of the present invention is intended to overcome above-mentioned deficiency of the prior art, for solving quality, environment, the health problem in the production of existing optical diffusion, provides a kind of scratch resistant optical diffusion and preparation method thereof.The scratch resistant optical diffusion of the present invention is abandoned to use and traditional is carried out diffusion layer coating and prepared by anti-scraping coating ultraviolet light polymerization mode in membrane surface, adopts by scratch resistant layer, diffusion layer and sandwich layer by five-layer co-squeezing, then prepares through the mode of two-way stretch masking; Obtained scratch resistant optical diffusion has higher brightness (>=1600Cd/m
2) and scattering uniformity coefficient, effectively can prevent scratch (hardness>=3H, hardness is pencil hardness), preparation technology is simple, is easy to operation.
Content of the present invention is: a kind of scratch resistant optical diffusion, it is characterized in that: this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.050mm ~ 0.350mm, the thickness of described sandwich layer is 68% ~ 84% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 10% ~ 20%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 6% ~ 12% of scratch resistant optical diffusion gross thickness;
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 80% ~ 95% and the scratch resistant hard resin of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 80% ~ 95% and the diffusion particle of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
Described sandwich layer material therefor is polyethylene terephthalate (being called for short PET).
In content of the present invention: transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
In content of the present invention: the polyester in described first scratch resistant layer and the second scratch resistant layer in material therefor is polyethylene terephthalate (being called for short PET) preferably.
In content of the present invention: the polyester in described first diffusion layer and the second diffusion layer in material therefor is polyethylene terephthalate (being called for short PET) preferably.
Another content of the present invention is: a kind of preparation method of scratch resistant optical diffusion, it is characterized in that step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Polyester slice and diffusion particle is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter (particle diameter) be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate (being called for short PET) as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature (namely temperature is at 30 ~ 60 DEG C), form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 100 DEG C ~ 130 DEG C simultaneously, longitudinal stretching multiple is 2.5 ~ 4.5, cross directional stretch multiple is 2.5 ~ 4.5, then thermal finalization at temperature 150 DEG C ~ 230 DEG C, at temperature 60 C ~ 80 DEG C after cooling, rolling, i.e. obtained (there is five-layer structure) scratch resistant optical diffusion.
In another content of the present invention: transmittance >=90%, mist degree >=90%, the hardness >=3H of scratch resistant optical diffusion obtained described in steps d.
In another content of the present invention: polyester described in step a is polyethylene terephthalate preferably.
In another content of the present invention: polyester described in step b is polyethylene terephthalate preferably.
Compared with prior art, the present invention has features and beneficial effect:
(1) on scratch resistant optical diffusion provided by the invention, layer is scratch resistant layer, and its skin hardness is 3H ~ 4H, and the problem effectively preventing diffusion barrier to be scraped off in backlight module process reaches scratch resistant technical goal;
(2) scratch resistant optical diffusion provided by the invention has two-layer diffusion layer, by adjusting the kind, particle diameter and the addition that expand radion, effectively can increase the diffuser efficiency to light, higher light penetration can be ensured again, product is made to have higher transmittance, the test result of the scratch resistant optical diffusion of the embodiment of the present invention (thickness range is at 50 ~ 350 μm) is transmittance 90.6% ~ 95.4%, mist degree 90.1% ~ 95.6%, thus make, by the light of this scratch resistant optical diffusion, there is higher brightness, reach 1600 ~ 1850Cd/m
2;
(3) scratch resistant optical diffusion provided by the invention adopts scratch resistant material, diffusion material and polyester raw material to cut into slices the masking mode of blended rear five layers of compound, the environmental pollution effectively avoiding traditional coating and ultraviolet light polymerization mode to bring, ultraviolet light polymerization power consumption, operator ' s health and diffusion particle and the problems such as resin-bonded power is not good;
(4) scratch resistant optical diffusion provided by the invention adopts synchronously biaxial stretch-formed filming technology, compared with the technique of progressively two-way stretch, scratch resistant optical diffusion does not contact with any roller when stretching, complete longitudinal direction, cross directional stretch simultaneously, excellent surface quality, each point performance is even, significantly improves the homogeneity of product thickness homogeneity and performance, especially can improve the diffusion uniformity coefficient of product;
(5) product preparation process of the present invention is simple, and operation is easy, easily operates, and manufacturing cost reduces, and energy ezpenditure obviously reduces, and the scratch resistant optical diffusion mechanical property of preparation is high, practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the scratch resistant optical diffusion of the present invention;
In figure: 1-sandwich layer, 2-diffusion layer (one deck be the first diffusion layer, another layer be the second diffusion layer), 3-scratch resistant layer (one deck be the first scratch resistant layer, another layer be the second scratch resistant layer), the scratch resistant hard resin of 4-diffusion particle, 5-.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
The preparation (embodiment 1-1 ~ 1-15) of Part I scratch resistant layer material, diffusion layer material
In following examples, the number percent of material is all mass percent, material therefor poliester chip, acryl resin, acrylic particle, granules of polystyrene, silica dioxide granule, siloxane particles are the conventional mill run in chemical materials market, without particular/special requirement.
Embodiment 1-1:
The poliester chip of 95% and the acryl resin of 5% are mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The acrylic particle of the poliester chip of 95% and 5% equal footpath (mean diameter) 2 μm is mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrude granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-2:
The poliester chip of 90% and the acryl resin of 10% are mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The acrylic particle in the poliester chip of 92% and 8% equal 8 μm, footpath is mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-3:
The poliester chip of 88% and the acryl resin of 12% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The acrylic particle in the poliester chip of 90% and 10% equal 20 μm, footpath is mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-4:
The poliester chip of 85% and the acryl resin of 15% are mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The acrylic particle in the poliester chip of 85% and 15% equal 14 μm, footpath is mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-5:
The poliester chip of 80% and the acryl resin of 20% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The granules of polystyrene in the poliester chip of 80% and 20% equal 15 μm, footpath is mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-6:
The poliester chip of 95% and the acryl resin of 5% are mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The granules of polystyrene in the poliester chip of 80% and 20% equal 8 μm, footpath is mixed in feed bin, after the drying that dewaters, at 265 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-7:
The poliester chip of 90% and the acryl resin of 10% are mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The granules of polystyrene in the poliester chip of 85% and 15% equal 2 μm, footpath is mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-8:
The poliester chip of 88% and the acryl resin of 12% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The granules of polystyrene in the poliester chip of 90% and 10% equal 20 μm, footpath is mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-9:
The poliester chip of 85% and the acryl resin of 15% are mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The silica dioxide granule in the poliester chip of 92% and 8% equal 20 μm, footpath is mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-10:
The poliester chip of 80% and the acryl resin of 20% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The silica dioxide granule in the poliester chip of 95% and 5% equal 13 μm, footpath is mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-11:
The poliester chip of 95% and the acryl resin of 5% are mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The silica dioxide granule in the poliester chip of 80% and 20% equal 7 μm, footpath is mixed in feed bin, after the drying that dewaters, at 265 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-12:
The poliester chip of 90% and the acryl resin of 10% are mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The silica dioxide granule in the poliester chip of 85% and 15% equal 2 μm, footpath is mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-13:
The poliester chip of 88% and the acryl resin of 12% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The siloxane particles in the poliester chip of 90% and 10% equal 2 μm, footpath is mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-14:
The poliester chip of 85% and the acryl resin of 15% are mixed in feed bin, after the drying that dewaters, at 270 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The siloxane particles in the poliester chip of 92% and 8% equal 10 μm, footpath is mixed in feed bin, after the drying that dewaters, at 280 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
Embodiment 1-15:
The poliester chip of 80% and the acryl resin of 20% are mixed in feed bin, after the drying that dewaters, at 275 DEG C, melt extrudes granulation by double screw extrusion machine, make scratch resistant layer material, for subsequent use.
The siloxane particles in the poliester chip of 95% and 5% equal 20 μm, footpath is mixed in feed bin, after the drying that dewaters, at 285 DEG C, melt extrudes granulation by double screw extrusion machine, make diffusion layer material, for subsequent use.
The preparation (embodiment 2-1 ~ 2-15,3 ~ 22) of the scratch resistant optical diffusion of Part II
Embodiment 2-1 ~ 2-15:
1, basic craft course:
By scratch resistant layer material, diffusion layer material and core material are respectively through single screw extrusion machine 1, 2 and the 3 three kinds of melts extruded at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by scratch resistant layer material from top to bottom, diffusion layer material, core material, the stratiform melt of diffusion layer material and scratch resistant layer material composition, extrude through rack type die again, obtain compound sheet, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature (30 ~ 60 DEG C), form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of 100 DEG C ~ 130 DEG C simultaneously, longitudinal stretching multiple is 2.5 ~ 4.5, cross directional stretch multiple is 2.5 ~ 4.5, then thermal finalization at 150 DEG C ~ 230 DEG C, at 60 DEG C ~ 80 DEG C after cooling, rolling, the final obtained scratch resistant optical diffusion of combined type with five-layer structure.
2, the scratch resistant optical diffusion of embodiment 2-1 ~ 2-15 core material poliester chip used is the mill run that chemical materials market is commonly used, without particular/special requirement.Scratch resistant layer material used, the diffusion layer material material prepared by above-described embodiment 1-1 ~ 1-15.
The technological parameter of the scratch resistant optical diffusion of 3, embodiment 2-1 ~ 2-15:
The specification of the scratch resistant optical diffusion of 4, embodiment 2-1 ~ 2-15 and the performance test results:
| Embodiment is numbered | Thickness (μm) | Transmittance (%) | Mist degree (%) | Hardness | Brightness (Cd/m 2) |
| 2-1 | 50 | 95.4 | 95.6 | 3H | 1621 |
| 2-2 | 75 | 95.2 | 94.9 | 3H | 1643 |
| 2-3 | 100 | 94.6 | 93.5 | 3H | 1677 |
| 2-4 | 188 | 93.5 | 92.3 | 4H | 1650 |
| 2-5 | 250 | 92.7 | 90.4 | 4H | 1735 |
| 2-6 | 350 | 90.6 | 92.0 | 4H | 1706 |
| 2-7 | 50 | 95.3 | 93.8 | 3H | 1693 |
| 2-8 | 75 | 94.9 | 93.1 | 3H | 1758 |
| 2-9 | 100 | 94.7 | 94.2 | 3H | 1850 |
| 2-10 | 188 | 93.4 | 94.7 | 3H | 1832 |
| 2-11 | 250 | 92.5 | 90.5 | 4H | 1805 |
| 2-12 | 350 | 91.1 | 91.2 | 4H | 1780 |
| 2-13 | 350 | 90.8 | 91.6 | 4H | 1600 |
| 2-14 | 100 | 93.9 | 90.8 | 3H | 1608 |
| 2-15 | 50 | 95.0 | 90.1 | 3H | 1619 |
Embodiment 3:
A kind of scratch resistant optical diffusion, this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.050mm, the thickness of described sandwich layer is 68% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 20%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 12% of scratch resistant optical diffusion gross thickness;
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 80% and the scratch resistant hard resin of 20% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 80% and the diffusion particle of 20% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 2 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
Described sandwich layer material therefor is polyethylene terephthalate;
Transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
Embodiment 4:
A kind of scratch resistant optical diffusion, this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.350mm, the thickness of described sandwich layer is 84% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 10%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 6% of scratch resistant optical diffusion gross thickness.
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 95% and the scratch resistant hard resin of 5% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 95% and the diffusion particle of 5% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
Described sandwich layer material therefor is polyethylene terephthalate;
Transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
Embodiment 5:
A kind of scratch resistant optical diffusion, this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.20mm, the thickness of described sandwich layer is 77% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 15%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 8% of scratch resistant optical diffusion gross thickness;
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 88% and the scratch resistant hard resin of 12% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 88% and the diffusion particle of 12% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 11 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
Described sandwich layer material therefor is polyethylene terephthalate;
Transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
Embodiment 6 ~ 12:
A kind of scratch resistant optical diffusion, this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.050mm ~ 0.350mm, the thickness of described sandwich layer is 68% ~ 84% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 10% ~ 20%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 6% ~ 12% of scratch resistant optical diffusion gross thickness;
The gross thickness (being called for short the gross thickness of film in table) of the scratch resistant optical diffusion in embodiment 6 ~ 12, the thickness of sandwich layer accounts for the number percent (being called for short the number percent of sandwich layer in table) of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer accounts for the number percent (being called for short the number percent of diffusion layer in table) of scratch resistant optical diffusion gross thickness, the number percent (being called for short the number percent of scratch resistant layer in table) that the thickness sum of described first scratch resistant layer and the second scratch resistant layer accounts for scratch resistant optical diffusion gross thickness sees the following form:
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 80% ~ 95% and the scratch resistant hard resin of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
The concrete mass percent consumption of each component in embodiment 6 ~ 12 sees the following form:
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 80% ~ 95% and the diffusion particle of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
The concrete mass percent consumption of each component in embodiment 6 ~ 12 sees the following form:
Described sandwich layer material therefor is polyethylene terephthalate;
Transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
In above-described embodiment 6 ~ 12: the polyester in described first scratch resistant layer and the second scratch resistant layer in material therefor is polyethylene terephthalate.
In above-described embodiment 6 ~ 12: the polyester in described first diffusion layer and the second diffusion layer in material therefor is polyethylene terephthalate.
Embodiment 13:
A preparation method for scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 80% polyester slice and 20% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Polyester slice and diffusion particle is got by the mass percent of 80% polyester slice and 20% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter (particle diameter) be in 2 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature (i.e. temperature any point in 30 ~ 60 DEG C), form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 100 DEG C simultaneously, longitudinal stretching multiple is 2.5, cross directional stretch multiple is 2.5, then thermal finalization at temperature 150 DEG C, under temperature 60 C after cooling, rolling, i.e. obtained (there is five-layer structure) scratch resistant optical diffusion.
Embodiment 14:
A preparation method for scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 95% polyester slice and 5% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 285 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Get polyester slice and diffusion particle by the mass percent of 95% polyester slice and 5% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 285 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter (particle diameter) be in 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature, form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 130 DEG C simultaneously, longitudinal stretching multiple is 4.5, cross directional stretch multiple is 4.5, then thermal finalization at temperature 230 DEG C, at temperature 80 DEG C after cooling, rolling, i.e. obtained (there is five-layer structure) scratch resistant optical diffusion.
Embodiment 15:
A preparation method for scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 87% polyester slice and 13% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 275 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Polyester slice and diffusion particle is got by the mass percent of 87% polyester slice and 13% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 275 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter (particle diameter) be in 10 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature, form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 120 DEG C simultaneously, longitudinal stretching multiple is 3.5, cross directional stretch multiple is 3.5, then thermal finalization at temperature 190 DEG C, under temperature 70 C after cooling, rolling, i.e. obtained (there is five-layer structure) scratch resistant optical diffusion.
Embodiment 16 ~ 22:
A preparation method for scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
The concrete mass percent consumption of each component in embodiment 16 ~ 22 sees the following form:
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Polyester slice and diffusion particle is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
The concrete mass percent consumption of each component in embodiment 16 ~ 22 sees the following form:
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter (particle diameter) be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature (i.e. temperature 30 ~ 60 DEG C), form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 100 DEG C ~ 130 DEG C simultaneously, longitudinal stretching multiple is 2.5 ~ 4.5, cross directional stretch multiple is 2.5 ~ 4.5, then thermal finalization at temperature 150 DEG C ~ 230 DEG C, at temperature 60 C ~ 80 DEG C after cooling, rolling, i.e. obtained (there is five-layer structure) scratch resistant optical diffusion.
In above-described embodiment 13 ~ 22: transmittance >=90%, mist degree >=90%, the hardness >=3H of scratch resistant optical diffusion obtained described in steps d.
In above-described embodiment 13 ~ 22: polyester described in step a is polyethylene terephthalate.
In above-described embodiment 13 ~ 22: polyester described in step b is polyethylene terephthalate.
In above-described embodiment: in the percentage adopted, do not indicate especially, be quality (weight) percentage; In the ratio adopted, do not indicate especially, be quality (weight) ratio; Described weight portion can be all gram or kilogram.
In above-described embodiment: the technological parameter (temperature etc.) in each step and each amounts of components numerical value etc. are scope, and any point is all applicable.
The concrete same prior art of technology contents described in content of the present invention and above-described embodiment, described starting material are commercially available prod.
The invention is not restricted to above-described embodiment, all can implement described in content of the present invention and there is described good result.
Claims (8)
1. a scratch resistant optical diffusion, it is characterized in that: this scratch resistant optical diffusion forms by setting gradually the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer compound, described first diffusion layer is identical with the thickness of the second diffusion layer, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer; The gross thickness of scratch resistant optical diffusion is 0.050mm ~ 0.350mm, the thickness of described sandwich layer is 68% ~ 84% of scratch resistant optical diffusion gross thickness, the thickness sum of described first diffusion layer and the second diffusion layer is scratch resistant optical diffusion gross thickness 10% ~ 20%, the thickness sum of described first scratch resistant layer and the second scratch resistant layer is 6% ~ 12% of scratch resistant optical diffusion gross thickness;
Described first scratch resistant layer and the second scratch resistant layer material therefor are that the polyester of 80% ~ 95% and the scratch resistant hard resin of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; Described scratch resistant layer hard resin material is acryl resin;
Described first diffusion layer and the second diffusion layer material therefor are that the polyester of 80% ~ 95% and the diffusion particle of 5% ~ 20% form by mass percent; Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters; The described diffusion particle one that to be particle diameter (particle diameter) be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
Described sandwich layer material therefor is polyethylene terephthalate.
2., by scratch resistant optical diffusion described in claim 1, it is characterized in that: transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
3. by scratch resistant optical diffusion described in claim 1 or 2, it is characterized in that: the polyester in described first scratch resistant layer and the second scratch resistant layer in material therefor is polyethylene terephthalate.
4. by scratch resistant optical diffusion described in claim 1 or 2, it is characterized in that: the polyester in described first diffusion layer and the second diffusion layer in material therefor is polyethylene terephthalate.
5. a preparation method for scratch resistant optical diffusion, is characterized in that step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% scratch resistant hard resin, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained scratch resistant layer material, for subsequent use;
Described polyester is ethylene glycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
Described scratch resistant layer hard resin material is acryl resin;
B, prepare diffusion layer material:
Polyester slice and diffusion particle is got by the mass percent of 80% ~ 95% polyester slice and 5% ~ 20% diffusion particle, mix in feed bin, after the drying that dewaters, melt extruded at the temperature of 265 DEG C ~ 285 DEG C by double screw extrusion machine, granulation, namely obtained diffusion layer material, for subsequent use;
Described polyester is ethylene glycol, polyglycol, propylene glycol, butylene glycol, 1, one or more and m-phthalic acid, terephthalic acid (TPA), 3 in 4-cyclohexanedimethanol, one or more in 5-dicarboxyl benzene sulfonic acid sodium salt, NDA are polymerized and the equal polyester of formation or copolyesters;
The described diffusion particle one that to be particle diameter be in 2 ~ 20 μm of acrylic particles, granules of polystyrene, silica dioxide granule or siloxane particles;
C, preparation core material:
Get polyethylene terephthalate as core material, for subsequent use;
D, prepare scratch resistant optical diffusion:
By obtained scratch resistant layer material, diffusion layer material and core material are respectively through the first single screw extrusion machine, second single screw extrusion machine and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through after feed block five runners, merge into and be followed successively by the first scratch resistant layer material from top to bottom, first diffusion layer material, core material, the stratiform melt of the second diffusion layer material and the second scratch resistant layer material composition, extrude through rack type die again, on the cold drum of the uniform rotation being connected with 20 DEG C of chilled waters, make below stratiform melt cooling to its glass temperature, form the uniform polyester slab of thickness of glassy state, complete longitudinal direction, cross directional stretch through two-way stretch equipment again under the condition of temperature 100 DEG C ~ 130 DEG C simultaneously, longitudinal stretching multiple is 2.5 ~ 4.5, cross directional stretch multiple is 2.5 ~ 4.5, then thermal finalization at temperature 150 DEG C ~ 230 DEG C, at temperature 60 C ~ 80 DEG C after cooling, rolling, i.e. obtained scratch resistant optical diffusion.
6. by the preparation method of scratch resistant optical diffusion described in claim 5, it is characterized in that: transmittance >=90%, mist degree >=90%, the hardness >=3H of scratch resistant optical diffusion obtained described in steps d.
7., by the preparation method of scratch resistant optical diffusion described in claim 5 or 6, it is characterized in that: polyester described in step a is polyethylene terephthalate.
8., by the preparation method of scratch resistant optical diffusion described in claim 5 or 6, it is characterized in that: polyester described in step b is polyethylene terephthalate.
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| CN111175867A (en) * | 2020-01-14 | 2020-05-19 | 深圳睿晟自动化技术有限公司 | Diffusion film and structured light projection module correction device |
| CN111531998A (en) * | 2020-04-30 | 2020-08-14 | 王洛 | Optical polyester film |
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