CN104375225B - A kind of scratch resistant optical diffusion and preparation method thereof - Google Patents
A kind of scratch resistant optical diffusion and preparation method thereof Download PDFInfo
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- CN104375225B CN104375225B CN201410738409.3A CN201410738409A CN104375225B CN 104375225 B CN104375225 B CN 104375225B CN 201410738409 A CN201410738409 A CN 201410738409A CN 104375225 B CN104375225 B CN 104375225B
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- scratch resistant
- diffusion
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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
-
- 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
Abstract
The invention discloses a kind of scratch resistant optical diffusion and preparation method thereof, by setting gradually, the first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer are compound to be formed, the thickness of the first diffusion layer and the second diffusion layer is identical, and the 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；Scratch resistant layer is made up of polyester and scratch resistant hard resin；Diffusion layer is made up of polyester and diffusion particle；Sandwich layer uses polyethylene terephthalate.The present invention uses scratch resistant layer, diffusion layer and sandwich layer by five-layer co-squeezing, then prepares through the mode of biaxial tension masking.Prepare scratch resistant optical diffusion light transmittance >=90%, mist degree >=90%, hardness >=3H；Can be widely applied to the manufacture of the devices such as liquid crystal display, backlight module parts, advertising lamp box, lighting.
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 present invention
Scratch resistant optical diffusion is useful as in the device that liquid crystal display, backlight module parts, advertising lamp box, lighting etc. need light source
Optics diffusion material.
Background technology
Optical diffusion membrane (also known as optical diffusion, optical diffusion film, be called for short diffusion barrier) is widely used in liquid crystal display, wide
Accusing in the device that lamp box, lighting etc. need light source, particularly in liquid crystal indicator, diffusion barrier is in backlight module
Key components and parts.The Main Function of optical diffusion is an up light luminance, and the soft dispersion of light received by light guide plate, is aobvious
Show that device provides a uniform area source, play the effect widening visual angle.For liquid crystal display, need in its optics module
Want two panels optical diffusion, be called diffusion barrier and lower diffusion barrier.The diffusion barrier is wherein descended near light guide plate, major function to be
Light harvesting, cover light guide plate printing net-point or line source, fluorescent tube shadow；Upper diffusion barrier has high light penetration capacity, can improve visual angle, increasing
Add light source mildness, have diffusion and the function of protection prismatic lens concurrently.Diffusion barrier is compared to other blooming piece (such as prismatic lens)
Material cost proportion shared by for is the highest, but under high brightness specification requirement, the uniformity of display screen is mainly expanded with brightness
Dissipate the qualitative effects of film.The purpose of diffusion barrier is that linear light sorurce or point source of light are uniformly converted into area source, its action principle
Being to utilize light to pass in the medium have different refractivity, light produces the phenomenon that many reflects, reflects, scatters, and causes light
Learn the effect of diffusion.
At present, the manufacture method of diffusion barrier generally uses the wet coating mode of scattering particles type, it is common that will scatter grain
Son and binder resin, the mixture such as polyacrylic resin [or claiming acryl resin, polymethyl methacrylate (PMMA)] is coated with
Being overlying on the surface of base material transparent optical level polyester film, coating is dried through high temperature and is removed solvent, then through UV-cured and be formed
Light diffusion layer and the optical diffusion film of base material composition.This scattering particles type cloth of coating-type diffusion barrier has certain light transmittance and mist
Degree, its presentation quality is good.Such diffusion barrier relies primarily in coat the various sizes of scattering particles of random scatter to entrance
Incident ray in coating is scattered, and makes the direction random distribution of emergent ray, so that the nonuniform illumination of incident illumination is equal
Homogenize, and the flaw of the backlight module element below diffusion barrier is played covering effect.Additionally, some sizes are bigger in coat
The top of scattering particles protrude from coating surface, form the curved surface that light is had certain optically focused effect, make diffusion barrier have
Certain light gathering.Meanwhile, the diffusion layer that causes to prevent diffusion barrier to be in use scraped off destroys, the most also can be
Diffusion layer adds stiffening aids, makes stiffening aids carry out cross-linking reaction by the way of ultraviolet light polymerization, on diffusion barrier surface
Form hardened layer, play anti-scratch effect.
The main mode of production of diffusion barrier all can relate to solvent application and ultraviolet light polymerization both technique, to ring at present
The healthy meeting of border and practitioner has undesirable effect, and ultraviolet light polymerization also can expend substantial amounts of electric energy, and above-mentioned factor is all
It is unfavorable for the mass industrialized production of diffusion barrier.Meanwhile, the diffusion uniformity of such diffusion barrier is by polyester base film quality, diffusion
The multiple restriction of the factors such as particle coating fluid and coating process, it is difficult to product quality is control effectively.
Development and the raising day by day of people's environmental consciousness, people's property to optical diffusion membrane along with science and technology
Environmental benefit while requiring increasingly to improve, during the most more focusing on production and using.Therefore, in environmental protection
On the premise of, efficiently produce the uniform scratch resistant diffusion barrier of nephelometric turbidity unit, be that of current field of liquid crystal display needs solution is important
Problem.
Summary of the invention
The purpose of the present invention is intended to overcome above-mentioned deficiency of the prior art, for solving in the production of existing optical diffusion
Quality, environment, health problem, it is provided that a kind of scratch resistant optical diffusion and preparation method thereof.The scratch resistant optical diffusion of the present invention is got rid of
Abandoning to use and traditional be diffused layer coating and prepared by anti-scraping coating ultraviolet light polymerization mode in membrane surface, employing is by scratch resistant
Layer, diffusion layer and sandwich layer are by five-layer co-squeezing, then prepare through the mode of biaxial tension masking；The scratch resistant optical diffusion tool prepared
There is higher brightness (>=1600Cd/m2) and the scattering uniformity, (hardness >=3H, hardness is that pencil is hard effectively to prevent scratch
Degree), preparation technology is simple, it is easy to operation.
Present disclosure is: a kind of scratch resistant optical diffusion, it is characterized in that: this scratch resistant optical diffusion is by setting gradually
The compound composition of first scratch resistant layer, the first diffusion layer, sandwich layer, the second diffusion layer and the second scratch resistant layer, described first diffusion layer and the
The thickness of two diffusion layers is identical, and described first scratch resistant layer is identical with the thickness of the second scratch resistant layer；The total thickness of scratch resistant optical diffusion
Degree is for 0.050mm～0.350mm, and the thickness of described sandwich layer is 68%～the 84% of scratch resistant optical diffusion gross thickness, described the
The thickness sum of one diffusion layer and the second diffusion layer is 10%～the 20% of scratch resistant optical diffusion gross thickness, described first scratch resistant
Layer is the 6%～12% of scratch resistant optical diffusion gross thickness with the thickness sum of the second scratch resistant layer；
Described first scratch resistant layer and the second scratch resistant layer material therefor by the polyester that mass percent is 80%～95% with
The scratch resistant hard resin composition of 5%～20%；Described polyester is in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
One or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one
Kind or two or more polymerization and the equal polyester that formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
Described first diffusion layer and the second diffusion layer material therefor by the polyester that mass percent is 80%～95% with
The diffusion particle composition of 5%～20%；Described polyester is ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4-hexamethylene two
One or more in methanol are with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid
In one or more polymerizations and the equal polyester that formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be 2
～the one in 20 μm acrylic granules, granules of polystyrene, silica dioxide granule or siloxane particles；
Described sandwich layer material therefor is polyethylene terephthalate (being called for short PET).
In present disclosure: light transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
In present disclosure: described first scratch resistant layer is preferably poly-with the polyester in material therefor in the second scratch resistant layer
Ethylene glycol terephthalate (is called for short PET).
In present disclosure: in described first diffusion layer and the second diffusion layer, the polyester in material therefor is preferably poly-
Ethylene glycol terephthalate (is called for short PET).
Another content of the present invention is: the preparation method of a kind of scratch resistant optical diffusion, it is characterized in that step is:
A, preparation scratch resistant layer material:
Take polyester slice by the mass percent of 80%～95% polyester slice and 5%～20% scratch resistant hard resin and prevent
Scraping hard resin, mix homogeneously in feed bin, through except water after drying, by double screw extruder 265 DEG C～the temperature of 285 DEG C
Under melt extrude, pelletize, i.e. prepare scratch resistant layer material, standby；
Described polyester be in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or more and
One or more in phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and shape
The equal polyester become or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion grain is taken by the mass percent of 80%～95% polyester slice and 5%～20% diffusion particle
Son, mix homogeneously in feed bin, through except water after drying, squeezes by double screw extruder is melted at a temperature of 265 DEG C～285 DEG C
Go out, pelletize, i.e. prepare diffusion layer material, standby；
Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；
Described diffusion particle be particle diameter (particle diameter) be 2～20 μm acrylic granules, granules of polystyrene, silicon dioxide
One in granule or siloxane particles；
C, preparation core material:
Take polyethylene terephthalate (be called for short PET) as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, the second list
Screw extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five
After bar sub-runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second expansion from top to bottom
Dissipate layer material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, be connected with 20 DEG C of cooling water
On the cold drum of uniform rotation, make stratiform melt cooling to (i.e. temperature is at 30～60 DEG C) below its vitrification point, form glassy state
Polyester slab in uniform thickness；Complete longitudinally through biaxial tension equipment under conditions of temperature 100 DEG C～130 DEG C again, simultaneously
Cross directional stretch, longitudinal stretching multiple is 2.5～4.5, and cross directional stretch multiple is 2.5～4.5, then through temperature 150 DEG C～230 DEG C
Lower thermal finalization, at temperature 60 C～80 DEG C after cooling, rolling, i.e. prepare (there is five-layer structure) scratch resistant optical diffusion.
In another content of the present invention: light transmittance >=90% of scratch resistant optical diffusion described in step d, mist degree >=90%,
Hardness >=3H.
In another content of the present invention: polyester described in step a is preferably polyethylene terephthalate.
In another content of the present invention: polyester described in step b is preferably polyethylene terephthalate.
Compared with prior art, the present invention has features and a beneficial effect:
(1) on the scratch resistant optical diffusion that the present invention provides, layer is scratch resistant layer, and its case hardness is 3H～4H, has
Effect prevents the problem that diffusion barrier is scraped off in the backlight module course of processing, has reached scratch resistant technical goal；
(2) the scratch resistant optical diffusion that the present invention provides has two-layer diffusion layer, expands the kind of radion, grain by adjusting
Footpath and addition, can effectively increase the diffuser efficiency to light, can guarantee that again higher light penetration so that product has
Higher light transmittance, the test result of the scratch resistant optical diffusion of the embodiment of the present invention (thickness range is in 50～350 μm) is printing opacity
Rate 90.6%～95.4%, mist degree 90.1%～95.6%, so that have relatively by the light of this scratch resistant optical diffusion
High brightness, has reached 1600～1850Cd/m2；
(3) the scratch resistant optical diffusion that the present invention provides uses scratch resistant material, diffusion material with polyester raw material section altogether
Mixed rear five layers of compound masking mode, can be prevented effectively from traditional coating and environmental pollution that ultraviolet light polymerization mode is brought, purple
The problems such as outer photocuring power consumption, operator's health and diffusion particle are the best with resin-bonded power；
(4) the scratch resistant optical diffusion that the present invention provides uses and synchronizes biaxial stretch-formed filming technology, draws with the most two-way
The technique stretched is compared, and scratch resistant optical diffusion does not contacts with any roller when stretching, completes longitudinally, laterally to stretch, table simultaneously
Face is superior in quality, and each point performance is uniform, and the homogeneity of product thickness uniformity and performance is greatly improved, and enables in particular to improve and produces
The diffusion uniformity of product；
(5) product preparation process of the present invention is simple, and operation is easy, easily operates, and manufacturing cost reduces, and energy expenditure is obvious
Reducing, 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 (a layer be the first diffusion layer, another layer be the second diffusion layer), 3-scratch resistant layer (
Layer be the first scratch resistant layer, another layer be the second scratch resistant layer), 4-diffusion particle, the scratch resistant hard resin of 5-.
Detailed description of the invention
The invention will be further described for example given below plan, but is not to be construed as scope
Restriction, some nonessential improvement and tune that the present invention is made by person skilled in art according to the content of the invention described above
Whole, still fall within protection scope of the present invention.
Part I scratch resistant layer material, the preparation (embodiment 1-1～1-15) of diffusion layer material
In following example, the percentage ratio of material is all mass percent, and material therefor polyethylene terephthalate is cut
Sheet, acrylic resin, acrylic granule, granules of polystyrene, silica dioxide granule, siloxane particles are chemical materials market
Conventional mill run, without particular/special requirement.
Embodiment 1-1:
Poliester chip by 95% and the acrylic resin of 5% mix homogeneously in feed bin, warp
Except water is dried, at 285 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the acrylic granule of 5% equal footpath (average diameter) 2 μm by 95% exist
Mix homogeneously in feed bin, through except water after drying, melt extruding pelletize by double screw extruder, make diffusion layer at 285 DEG C
Material, standby.
Embodiment 1-2:
Poliester chip by 90% and the acrylic resin of 10% mix homogeneously in feed bin, warp
Except water is dried, at 280 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the acrylic granule of 8% equal footpath 8 μm by 92% mix in feed bin
Uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 280 DEG C, make diffusion layer material, standby.
Embodiment 1-3:
Poliester chip by 88% and the acrylic resin of 12% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the acrylic granule of 10% equal footpath 20 μm by 90% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 275 DEG C, make diffusion layer material, standby
With.
Embodiment 1-4:
Poliester chip by 85% and the acrylic resin of 15% mix homogeneously in feed bin, warp
Except water is dried, at 270 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the acrylic granule of 15% equal footpath 14 μm by 85% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 270 DEG C, make diffusion layer material, standby
With.
Embodiment 1-5:
Poliester chip by 80% and the acrylic resin of 20% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip by 80% and the granules of polystyrene of 20% equal footpath 15 μm are in feed bin
Mix homogeneously, through except water after drying, melt extruding pelletize by double screw extruder at 285 DEG C, make diffusion layer material, standby
With.
Embodiment 1-6:
Poliester chip by 95% and the acrylic resin of 5% mix homogeneously in feed bin, warp
Except water is dried, at 285 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the granules of polystyrene of 20% equal footpath 8 μm by 80% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 265 DEG C, make diffusion layer material, standby
With.
Embodiment 1-7:
Poliester chip by 90% and the acrylic resin of 10% mix homogeneously in feed bin, warp
Except water is dried, at 280 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the granules of polystyrene of 15% equal footpath 2 μm by 85% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 270 DEG C, make diffusion layer material, standby
With.
Embodiment 1-8:
Poliester chip by 88% and the acrylic resin of 12% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip by 90% and the granules of polystyrene of 10% equal footpath 20 μm are in feed bin
Mix homogeneously, through except water after drying, melt extruding pelletize by double screw extruder at 275 DEG C, make diffusion layer material, standby
With.
Embodiment 1-9:
Poliester chip by 85% and the acrylic resin of 15% mix homogeneously in feed bin, warp
Except water is dried, at 270 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the silica dioxide granule of 8% equal footpath 20 μm by 92% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 280 DEG C, make diffusion layer material, standby
With.
Embodiment 1-10:
Poliester chip by 80% and the acrylic resin of 20% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the silica dioxide granule of 5% equal footpath 13 μm by 95% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 285 DEG C, make diffusion layer material, standby
With.
Embodiment 1-11:
Poliester chip by 95% and the acrylic resin of 5% mix homogeneously in feed bin, warp
Except water is dried, at 285 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the silica dioxide granule of 20% equal footpath 7 μm by 80% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 265 DEG C, make diffusion layer material, standby
With.
Embodiment 1-12:
Poliester chip by 90% and the acrylic resin of 10% mix homogeneously in feed bin, warp
Except water is dried, at 280 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the silica dioxide granule of 15% equal footpath 2 μm by 85% are mixed in feed bin
Close uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 270 DEG C, make diffusion layer material, standby
With.
Embodiment 1-13:
Poliester chip by 88% and the acrylic resin of 12% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the siloxane particles of 10% equal footpath 2 μm by 90% mix in feed bin
Uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 275 DEG C, make diffusion layer material, standby.
Embodiment 1-14:
Poliester chip by 85% and the acrylic resin of 15% mix homogeneously in feed bin, warp
Except water is dried, at 270 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the siloxane particles of 8% equal footpath 10 μm by 92% mix in feed bin
Uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 280 DEG C, make diffusion layer material, standby.
Embodiment 1-15:
Poliester chip by 80% and the acrylic resin of 20% mix homogeneously in feed bin, warp
Except water is dried, at 275 DEG C, melt extrudes pelletize by double screw extruder, make scratch resistant layer material, standby.
Poliester chip and the siloxane particles of 5% equal footpath 20 μm by 95% mix in feed bin
Uniformly, through except water after drying, melt extruding pelletize by double screw extruder at 285 DEG C, make diffusion layer material, standby.
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 respectively through single screw extrusion machine 1,2 and 3 in corresponding temperature
At 285 DEG C extrusion three kinds of melts, and respectively through five sub-runners of feed block after, merge into and be followed successively by scratch resistant layer from top to bottom
Material, diffusion layer material, core material, diffusion layer material and the stratiform melt of scratch resistant layer material composition, then through rack type die
Extrusion, obtains compound sheet, on the cold drum of uniform rotation being connected with 20 DEG C of cooling water, makes stratiform melt cooling to its vitrification temperature
(30～60 DEG C) below Du, form the polyester slab in uniform thickness of glassy state；Again through double under conditions of 100 DEG C～130 DEG C
Completing to stretcher longitudinally, laterally to stretch, longitudinal stretching multiple is 2.5～4.5 simultaneously, cross directional stretch multiple be 2.5～
4.5, then thermal finalization at 150 DEG C～230 DEG C, at 60 DEG C～80 DEG C after cooling, rolling, final preparing has five-layer structure
The scratch resistant optical diffusion of combined type.
2, core material poliester chip used by embodiment 2-1～the scratch resistant optical diffusion of 2-15 is
The mill run that chemical materials market is conventional, without particular/special requirement.Scratch resistant layer material used, diffusion layer material are above-described embodiment 1-
Material prepared by 1～1-15.
3, embodiment 2-1～the technological parameter of the scratch resistant optical diffusion of 2-15:
4, embodiment 2-1～the specification of the scratch resistant optical diffusion of 2-15 and the performance test results:
| Embodiment is numbered | Thickness (μm) | Light transmittance (%) | Mist degree (%) | Hardness | Brightness (Cd/m2) |
| 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 is by setting gradually the first scratch resistant layer, the first diffusion layer, core
Layer, the compound composition of the second diffusion layer and the second scratch resistant layer, the thickness of described first diffusion layer and the second diffusion layer is identical, and described the
One 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
Be the thickness sum of the 68% of scratch resistant optical diffusion gross thickness, described first diffusion layer and the second diffusion layer be that scratch resistant optics expands
The thickness sum dissipating the 20% of film gross thickness, described first scratch resistant layer and the second scratch resistant layer is scratch resistant optical diffusion gross thickness
12%；
Described first scratch resistant layer and the second scratch resistant layer material therefor are by the polyester that mass percent is 80% and 20%
Scratch resistant hard resin forms；Described polyester is the one in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
Described first diffusion layer and the second diffusion layer material therefor are by the polyester that mass percent is 80% and 20%
Diffusion particle forms；Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
Or two or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one or two
The equal polyester being polymerized more than kind and formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be 2 μm acrylic granules,
One in granules of polystyrene, silica dioxide granule or siloxane particles；
Described sandwich layer material therefor is polyethylene terephthalate；
Light 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 is by setting gradually the first scratch resistant layer, the first diffusion layer, core
Layer, the compound composition of the second diffusion layer and the second scratch resistant layer, the thickness of described first diffusion layer and the second diffusion layer is identical, and described the
One 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
Be the thickness sum of the 84% of scratch resistant optical diffusion gross thickness, described first diffusion layer and the second diffusion layer be that scratch resistant optics expands
The thickness sum dissipating the 10% of film gross thickness, described first scratch resistant layer and the second scratch resistant layer is scratch resistant optical diffusion gross thickness
6%.
Described first scratch resistant layer and the second scratch resistant layer material therefor are by the polyester that mass percent is 95% and 5% prevent
Scrape hard resin composition；Described polyester is one or both in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
Above with one or more in M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid
The equal polyester being polymerized and formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
Described first diffusion layer and the second diffusion layer material therefor are by the polyester that mass percent is 95% and the expansion of 5%
Shot forms；Described polyester be the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or
Two or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one or both
The equal polyester being more than polymerized and formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be 20 μm acrylic granules,
One in granules of polystyrene, silica dioxide granule or siloxane particles；
Described sandwich layer material therefor is polyethylene terephthalate；
Light 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 is by setting gradually the first scratch resistant layer, the first diffusion layer, core
Layer, the compound composition of the second diffusion layer and the second scratch resistant layer, the thickness of described first diffusion layer and the second diffusion layer is identical, and described the
One 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
Be the thickness sum of the 77% of scratch resistant optical diffusion gross thickness, described first diffusion layer and the second diffusion layer be that scratch resistant optics expands
The thickness sum dissipating the 15% of film gross thickness, described first scratch resistant layer and the second scratch resistant layer is scratch resistant optical diffusion gross thickness
8%；
Described first scratch resistant layer and the second scratch resistant layer material therefor are by the polyester that mass percent is 88% and 12%
Scratch resistant hard resin forms；Described polyester is the one in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
Described first diffusion layer and the second diffusion layer material therefor are by the polyester that mass percent is 88% and 12%
Diffusion particle forms；Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
Or two or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one or two
The equal polyester being polymerized more than kind and formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be 11 μm acrylics
One in grain, granules of polystyrene, silica dioxide granule or siloxane particles；
Described sandwich layer material therefor is polyethylene terephthalate；
Light 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 is by setting gradually the first scratch resistant layer, the first diffusion layer, core
Layer, the compound composition of the second diffusion layer and the second scratch resistant layer, the thickness of described first diffusion layer and the second diffusion layer is identical, and described the
One 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, described
The thickness of sandwich layer is 68%～the 84% of scratch resistant optical diffusion gross thickness, described first diffusion layer and the thickness of the second diffusion layer
Sum is 10%～the 20% of scratch resistant optical diffusion gross thickness, described first scratch resistant layer with the thickness sum of the second scratch resistant layer is
The 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
Account for the percentage ratio (being called for short the percentage ratio of sandwich layer in table) of scratch resistant optical diffusion gross thickness, described first diffusion layer and the second diffusion
Layer thickness sum account for the percentage ratio (being called for short the percentage ratio of diffusion layer in table) of scratch resistant optical diffusion gross thickness, described first prevent
The thickness sum of scratch layers and the second scratch resistant layer accounts for the percentage ratio of scratch resistant optical diffusion gross thickness and (is called for short the percentage of scratch resistant layer in table
Than) see table:
Described first scratch resistant layer and the second scratch resistant layer material therefor by the polyester that mass percent is 80%～95% with
The scratch resistant hard resin composition of 5%～20%；Described polyester is in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
One or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one
Kind or two or more polymerization and the equal polyester that formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
The concrete mass percent consumption of each component in embodiment 6～12 see table:
Described first diffusion layer and the second diffusion layer material therefor by the polyester that mass percent is 80%～95% with
The diffusion particle composition of 5%～20%；Described polyester is ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4-hexamethylene two
One or more in methanol are with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid
In one or more polymerizations and the equal polyester that formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be 2
～the one in 20 μm acrylic granules, granules of polystyrene, silica dioxide granule or siloxane particles；
The concrete mass percent consumption of each component in embodiment 6～12 see table:
Described sandwich layer material therefor is polyethylene terephthalate；
Light transmittance >=90% of described scratch resistant optical diffusion, mist degree >=90%, hardness >=3H.
In above-described embodiment 6～12: described first scratch resistant layer and the polyester in material therefor in the second scratch resistant layer are for poly-right
PET.
In above-described embodiment 6～12: in described first diffusion layer and the second diffusion layer, the polyester in material therefor is for poly-right
PET.
Embodiment 13:
A kind of preparation method of scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is taken by the mass percent of the scratch resistant hard resin of 80% polyester slice and 20%,
Mix homogeneously in feed bin, through except water dried, melt extruded at a temperature of 265 DEG C by double screw extruder, pelletize, i.e.
Prepare scratch resistant layer material, standby；
Described polyester be in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or more and
One or more in phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and shape
The equal polyester become or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion particle is taken, in feed bin by the mass percent of 80% polyester slice and 20% diffusion particle
Mix homogeneously, through except water dried, melt extruded at a temperature of 265 DEG C by double screw extruder, pelletize, i.e. prepare diffusion
Layer material, standby；
Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；
Described diffusion particle be particle diameter (particle diameter) be 2 μm acrylic granules, granules of polystyrene, silica dioxide granule
Or the one in siloxane particles；
C, preparation core material:
Take polyethylene terephthalate as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, the second list
Screw extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five
After bar sub-runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second expansion from top to bottom
Dissipate layer material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, be connected with 20 DEG C of cooling water
On the cold drum of uniform rotation, make stratiform melt cooling to (i.e. temperature any point in 30～60 DEG C) below its vitrification point, shape
Become the polyester slab in uniform thickness of glassy state；Complete longitudinally through biaxial tension equipment under conditions of temperature 100 DEG C again, simultaneously
Cross directional stretch, longitudinal stretching multiple is 2.5, and cross directional stretch multiple is 2.5, then thermal finalization at temperature 150 DEG C, temperature 60 C
After lower cooling, rolling, i.e. prepare (there is five-layer structure) scratch resistant optical diffusion.
Embodiment 14:
A kind of preparation method of scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is taken by the mass percent of the scratch resistant hard resin of 95% polyester slice and 5%,
Mix homogeneously in feed bin, through except water dried, melt extruded at a temperature of 285 DEG C by double screw extruder, pelletize, i.e.
Prepare scratch resistant layer material, standby；
Described polyester be in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or more and
One or more in phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and shape
The equal polyester become or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion particle is taken, in feed bin by the mass percent of 95% polyester slice and 5% diffusion particle
Mix homogeneously, through except water dried, melt extruded at a temperature of 285 DEG C by double screw extruder, pelletize, i.e. prepare diffusion
Layer material, standby；
Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；
Described diffusion particle be particle diameter (particle diameter) be 20 μm acrylic granules, granules of polystyrene, silicon dioxide
One in grain or siloxane particles；
C, preparation core material:
Take polyethylene terephthalate as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, the second list
Screw extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five
After bar sub-runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second expansion from top to bottom
Dissipate layer material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, be connected with 20 DEG C of cooling water
On the cold drum of uniform rotation, make stratiform melt cooling to below its vitrification point, form the polyester in uniform thickness casting of glassy state
Sheet；Completing longitudinally, laterally to stretch through biaxial tension equipment again under conditions of temperature 130 DEG C, longitudinal stretching multiple is simultaneously
4.5, cross directional stretch multiple is 4.5, then thermal finalization at temperature 230 DEG C, at temperature 80 DEG C after cooling, and rolling, i.e. prepare (tool
Have five-layer structure) scratch resistant optical diffusion.
Embodiment 15:
A kind of preparation method of scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Polyester slice and scratch resistant hard resin is taken by the mass percent of the scratch resistant hard resin of 87% polyester slice and 13%,
Mix homogeneously in feed bin, through except water dried, melt extruded at a temperature of 275 DEG C by double screw extruder, pelletize, i.e.
Prepare scratch resistant layer material, standby；
Described polyester be in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or more and
One or more in phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and shape
The equal polyester become or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion particle is taken, in feed bin by the mass percent of 87% polyester slice and 13% diffusion particle
Mix homogeneously, through except water dried, melt extruded at a temperature of 275 DEG C by double screw extruder, pelletize, i.e. prepare diffusion
Layer material, standby；
Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；
Described diffusion particle be particle diameter (particle diameter) be 10 μm acrylic granules, granules of polystyrene, silicon dioxide
One in grain or siloxane particles；
C, preparation core material:
Take polyethylene terephthalate as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, the second list
Screw extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five
After bar sub-runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second expansion from top to bottom
Dissipate layer material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, be connected with 20 DEG C of cooling water
On the cold drum of uniform rotation, make stratiform melt cooling to below its vitrification point, form the polyester in uniform thickness casting of glassy state
Sheet；Completing longitudinally, laterally to stretch through biaxial tension equipment again under conditions of temperature 120 DEG C, longitudinal stretching multiple is simultaneously
3.5, cross directional stretch multiple is 3.5, then thermal finalization at temperature 190 DEG C, under temperature 70 C after cooling, and rolling, i.e. prepare (tool
Have five-layer structure) scratch resistant optical diffusion.
Embodiment 16～22:
A kind of preparation method of scratch resistant optical diffusion, step is:
A, preparation scratch resistant layer material:
Take polyester slice by the mass percent of 80%～95% polyester slice and 5%～20% scratch resistant hard resin and prevent
Scraping hard resin, mix homogeneously in feed bin, through except water after drying, by double screw extruder 265 DEG C～the temperature of 285 DEG C
Under melt extrude, pelletize, i.e. prepare scratch resistant layer material, standby；
The concrete mass percent consumption of each component in embodiment 16～22 see table:
Described polyester be in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or more and
One or more in phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and shape
The equal polyester become or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion grain is taken by the mass percent of 80%～95% polyester slice and 5%～20% diffusion particle
Son, mix homogeneously in feed bin, through except water after drying, squeezes by double screw extruder is melted at a temperature of 265 DEG C～285 DEG C
Go out, pelletize, i.e. prepare diffusion layer material, standby；
The concrete mass percent consumption of each component in embodiment 16～22 see table:
Described polyester is the one in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or two
In kind above and M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid one or both with
Upper polymerization and the equal polyester that formed or copolyesters；
Described diffusion particle be particle diameter (particle diameter) be 2～20 μm acrylic granules, granules of polystyrene, silicon dioxide
One in granule or siloxane particles；
C, preparation core material:
Take polyethylene terephthalate as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, the second list
Screw extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five
After bar sub-runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second expansion from top to bottom
Dissipate layer material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, be connected with 20 DEG C of cooling water
On the cold drum of uniform rotation, make stratiform melt cooling to (i.e. temperature 30～60 DEG C) below its vitrification point, form glassy state
Polyester slab in uniform thickness；Complete longitudinal, horizontal again under conditions of temperature 100 DEG C～130 DEG C through biaxial tension equipment simultaneously
To stretching, longitudinal stretching multiple is 2.5～4.5, and cross directional stretch multiple is 2.5～4.5, then at temperature 150 DEG C～230 DEG C
Thermal finalization, at temperature 60 C～80 DEG C after cooling, rolling, i.e. prepare (there is five-layer structure) scratch resistant optical diffusion.
In above-described embodiment 13～22: light transmittance >=90% of scratch resistant optical diffusion described in step d, mist degree >=90%,
Hardness >=3H.
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 used, indicate the most especially, be quality (weight) percentage；
In the ratio used, indicate the most especially, be quality (weight) ratio；Described weight portion can be all gram or kilogram.
In above-described embodiment: technological parameter (temperature etc.) in each step and each amounts of components numerical value etc. are scope, appoint
The most applicable.
The technology contents being not specifically delineated in present invention and above-described embodiment is compared with technology, and described raw material is
Commercially available prod.
The invention is not restricted to above-described embodiment, described in present invention, all can implement and have described good result.
Claims (8)
1. a scratch resistant optical diffusion, is characterized in that: this scratch resistant optical diffusion is by setting gradually the first scratch resistant layer, the first expansion
Dissipate the compound composition of layer, sandwich layer, the second diffusion layer and the second scratch resistant layer, described first diffusion layer and the thickness phase of the second diffusion layer
With, described first scratch resistant layer is identical with the thickness of the second scratch resistant layer；The gross thickness of scratch resistant optical diffusion be 0.050mm～
0.350mm, the thickness of described sandwich layer is that 68%～the 84% of scratch resistant optical diffusion gross thickness, described first diffusion layer and second are expanded
The thickness sum dissipating layer is the thickness of 10%～the 20% of scratch resistant optical diffusion gross thickness, described first scratch resistant layer and the second scratch resistant layer
Degree sum is the 6%～12% of scratch resistant optical diffusion gross thickness；
Described first scratch resistant layer and the second scratch resistant layer material therefor are by the polyester that mass percent is 80%～95% and 5%～20%
Scratch resistant hard resin composition；Described polyester be the one in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol or
Two or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one or both
The equal polyester being more than polymerized and formed or copolyesters；Described scratch resistant hard resin material is acrylic resin；
Described first diffusion layer and the second diffusion layer material therefor are by the polyester that mass percent is 80%～95% and 5%～20%
Diffusion particle composition；Described polyester is in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol
Kind or two or more with M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid in one or
Two or more polymerizations and the equal polyester that formed or copolyesters；Described diffusion particle be particle diameter (particle diameter) be sub-gram of 2～20 μm
One in power granule, granules of polystyrene, silica dioxide granule or siloxane particles；
Described sandwich layer material therefor is polyethylene terephthalate.
2. scratch resistant optical diffusion as described in claim 1, is characterized in that: light transmittance >=90% of described scratch resistant optical diffusion,
Mist degree >=90%, hardness >=3H.
3. scratch resistant optical diffusion as described in claim 1 or 2, is characterized in that: in described first scratch resistant layer and the second scratch resistant layer
Polyester in material therefor is polyethylene terephthalate.
4. scratch resistant optical diffusion as described in claim 1 or 2, is characterized in that: in described first diffusion layer and the second diffusion layer
Polyester 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 tree is taken by the mass percent of 80%～95% polyester slice and 5%～20% scratch resistant hard resin
Fat, mix homogeneously in feed bin, through except water after drying, squeezes by double screw extruder is melted at a temperature of 265 DEG C～285 DEG C
Go out, pelletize, i.e. prepare scratch resistant layer material, standby；
Described polyester is that one or more in ethylene glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol are with isophthalic two
One or more in formic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid are polymerized and are formed
All polyester or copolyesters；
Described scratch resistant hard resin material is acrylic resin；
B, prepare diffusion layer material:
Polyester slice and diffusion particle is taken, at material by the mass percent of 80%～95% polyester slice and 5%～20% diffusion particle
Mix homogeneously in storehouse, through except water after drying, being melt extruded by double screw extruder, made at a temperature of 265 DEG C～285 DEG C
Grain, i.e. prepares diffusion layer material, standby；
Described polyester be in ethylene glycol, Polyethylene Glycol, propylene glycol, butanediol, 1,4 cyclohexane dimethanol one or both with
One or more above and in M-phthalic acid, p-phthalic acid, 3,5-dicarboxyl benzene sulfonic acid sodium salt, 2,6-naphthalenedicarboxylic acid gather
The equal polyester closed and formed or copolyesters；
Described diffusion particle be particle diameter be 2～20 μm acrylic granules, granules of polystyrene, silica dioxide granule or siloxanes
One in Li；
C, preparation core material:
Take polyethylene terephthalate as core material, standby；
D, prepare scratch resistant optical diffusion:
By prepared scratch resistant layer material, diffusion layer material and core material respectively through the first single screw extrusion machine, second single screw rod
Extruder and the 3rd single screw extrusion machine extrude three kinds of melts at corresponding temperature 285 DEG C, and respectively through feed block five points
After runner, merge into and be followed successively by the first scratch resistant layer material, the first diffusion layer material, core material, the second diffusion layer from top to bottom
Material and the stratiform melt of the second scratch resistant layer material composition, then extrude through rack type die, it is being connected with 20 DEG C of cooling water at the uniform velocity
Rotate on cold drum, make stratiform melt cooling to below its vitrification point, form the polyester slab in uniform thickness of glassy state；Again
Completing longitudinally, laterally to stretch through biaxial tension equipment under conditions of temperature 100 DEG C～130 DEG C, longitudinal stretching multiple is simultaneously
2.5～4.5, cross directional stretch multiple is 2.5～4.5, then thermal finalization at temperature 150 DEG C～230 DEG C, temperature 60 C～80 DEG C
After lower cooling, rolling, i.e. prepare scratch resistant optical diffusion.
6. the preparation method of scratch resistant optical diffusion as described in claim 5, is characterized in that: scratch resistant optics diffusion described in step d
Light transmittance >=90% of film, mist degree >=90%, hardness >=3H.
7. the preparation method of scratch resistant optical diffusion as described in claim 5 or 6, is characterized in that: polyester described in step a is poly-
Ethylene glycol terephthalate.
8. the preparation method of scratch resistant optical diffusion as described in claim 5 or 6, is characterized in that: polyester described in step b is poly-
Ethylene glycol terephthalate.
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| CN106671546B (en) * | 2016-12-23 | 2018-09-21 | 合肥乐凯科技产业有限公司 | A kind of high rigidity optical polyester film |
| CN108897083B (en) * | 2018-08-28 | 2021-09-14 | 张家港康得新光电材料有限公司 | Optical composite film and preparation method thereof |
| CN110119004B (en) * | 2019-06-03 | 2022-05-31 | 明基材料有限公司 | Anti-dazzle film and polarizing plate with same |
| CN110629166A (en) * | 2019-10-31 | 2019-12-31 | 苏州市三同真空镀膜有限公司 | Corrosion-resistant scratch-resistant metal film for electronic product and preparation method thereof |
| 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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| CN101836136A (en) * | 2007-10-23 | 2010-09-15 | 住友化学株式会社 | Antiglare film, anti-dazzling polarizing plate and image display device |
| CN102096127A (en) * | 2011-01-30 | 2011-06-15 | 宁波东旭成化学有限公司 | Three-layer composite type anti-scrape high-performance optical diffusion film and preparation method thereof |
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| JP2011065139A (en) * | 2009-08-19 | 2011-03-31 | Fujifilm Corp | Light-diffusing sheet |
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| CN101836136A (en) * | 2007-10-23 | 2010-09-15 | 住友化学株式会社 | Antiglare film, anti-dazzling polarizing plate and image display device |
| CN102096127A (en) * | 2011-01-30 | 2011-06-15 | 宁波东旭成化学有限公司 | Three-layer composite type anti-scrape high-performance optical diffusion film and preparation method thereof |
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