CN104656172B - High-stiffness reflective film - Google Patents
High-stiffness reflective film Download PDFInfo
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- CN104656172B CN104656172B CN201510073532.2A CN201510073532A CN104656172B CN 104656172 B CN104656172 B CN 104656172B CN 201510073532 A CN201510073532 A CN 201510073532A CN 104656172 B CN104656172 B CN 104656172B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
- G02B5/0841—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only comprising organic materials, e.g. polymers
Abstract
The invention relates to an optical polyester thin film, particularly a high-stiffness reflective film. In order to solve the defect that the reflective film in a conventional liquid crystal display is easy to collapse, the invention provides the high-stiffness reflective film. The high-stiffness reflective film comprises a reflective layer and a surface layer, wherein a crystal polymer is added into the reflective layer and the reflective layer has micropores; inorganic particles are added into the surface layer; the reflective film comprises a A-B two-layer structure: the reflective layer is the layer B while the surface layer is the layer A; or, the reflective layer comprises a A-B-A three-layer structure: the reflective layer is the layer B while the surface layers are the layers A. The high-stiffness reflective film provided by the invention overcomes the defects of collapse and the like when being used as a part of a big-picture liquid crystal display, can endow the display with high-quality images and has a good weather resistance.
Description
Technical field
The present invention relates to a kind of optical polyester film, in more detail, it is in big picture, preferred side entering type liquid crystal
Show high-stiffness reflectance coating used in device (hereinafter sometimes referred to as lcd).
Background technology
With the arriving of digital Age, liquid crystal display (lcd) has had become as current most common Display Technique.Because
Lcd has an environmental protection, and consume energy low, Low emissivity, the advantages of picture is soft, so lcd would is that main flow in coming few decades
Display Technique.Lcd is the display device of non-luminescent, need can be only achieved the function of display by backlight.Backlight performance
Quality except meeting directly affect lcd imaging quality in addition to, the cost of backlight accounts for the 3-5% of lcd module, and the electric power being consumed is more
Account for the 75% of module, be considerable spare part in lcd module.Fine, large-sized lcd are it is necessary to there be the high performance back of the body
Light technology is matched, and therefore while lcd industry makes great efforts developing new opplication field, the high performance of backlight technology is also played the part of
The role of person who has rendered outstanding service behind the scenes.
The main member of backlight system includes: light source, light guide plate, all kinds of blooming piece.Light source have el, ccfl and
Led three types, can be divided into side-light type and two kinds of straight-down negative according to distribution of light sources position difference.With lcd module constantly to more
Bright, lighter, thinner direction is developed, and side-light type led backlight becomes the main flow of current backlight development.
In backlight system, blooming piece mainly includes reflectance coating, diffusion barrier and three kinds of brightness enhancement film.The main work of reflectance coating
With being the reflectivity improving optical surface, the light high efficiency of light guide plate bottom will be spilt and reflect with no consuming, thus reducing
Light consumes, and reduces power consumption, improves the light saturation degree of LCD.At present, for improving the reflectivity of reflectance coating, widely used
Following methods, add substantial amounts of inorganic particulate or incompatible resin in the polyester, in biaxial orientation process, are formed substantial amounts of micro-
(Chinese invention patent as Application No. 201010591111.6,201010589181.8,201010589164.4 etc. carries bubble
For reflectance coating all there is microvesicle), each microvesicle can as one total reflection unit, the total reflection unit pair of high-density arrangement
Light forms total reflection.The reflectance coating obtaining by this method, has the characteristics that reflectivity is high.But there is the reflection of microvesicle
It is filled with space, the density thus resulting in reflectance coating declines, the deflection of film reduces, and specifically when using, film will occur in film
The phenomenon of piece bending, especially needs the field that diaphragm is vertically placed more tight in television set, liquid crystal display, advertising lamp box etc.
Weight.
Content of the invention
In order to solve the defect that subsiding easily occurs in the reflectance coating in available liquid crystal display, the present invention provides a kind of high-stiffness
Reflectance coating and preparation method thereof.The high-stiffness reflectance coating that the present invention provides, in the portion of the liquid crystal display (lcd) as big picture
During part, occur without the defect such as subside, the image of display high-quality, and the weatherability having had can be given.
In order to solve above-mentioned technical problem, the present invention adopts following technical proposals:
The present invention provides a kind of high-stiffness reflectance coating, and described reflectance coating includes reflecting layer and top layer, adding in described reflecting layer
Added with Crystalline plastics, in described reflecting layer, there is micropore；It is added with inorganic particles in described top layer；Described reflectance coating includes
Ab double-layer structure: reflecting layer is b layer, top layer is a layer；Or, described reflectance coating includes aba three-decker: reflecting layer is b layer,
Top layer is a layer.
Described reflecting layer may be simply referred to as b layer, and described top layer may be simply referred to as a layer.
Further, described skin depth accounts for the 6%-20% of overall film thickness, and described reflector thickness accounts for total film thickness
The 80%-94% of degree.Further, described skin depth accounts for the 10% of overall film thickness, and it is total that described reflector thickness accounts for film
The 90% of thickness.Further, the thickness of described high-stiffness reflectance coating is 100-300 μm.
Further, reflecting layer is the pet polyester layer containing foaming hole.Described high-stiffness reflectance coating is referred to as reflecting
Film, or film.
Further, in described high-stiffness reflectance coating, described reflecting layer includes following components:
Polyester is 53-84%,
Foaming agent (incompatible resin) is 2-30%,
Light stabilizer is 1-4%,
Crystalline plastics are 1-10%,
Inorganic particles are 1-3%；
Described top layer includes following components:
Polyester is 97-99%；
Inorganic particles are 1-3%；
Described percentage composition is weight/mass percentage composition.
Foaming agent described in above-mentioned reflecting layer is the resin incompatible with pet.Foaming agent described in above-mentioned reflecting layer
Also referred to as incompatible resin, specially polymethylpentene, polypropylene, polyethylene, polybutene, cyclic olefine copolymer, polystyrene,
One of polymethylstyrene or two or more combinations.Wherein, incompatible resin is preferably polyolefin.Incompatible resin exists
It is further preferably the little polypropylene of critical surface tension, polymethylpentene, one kind of cyclic olefine copolymer in polyolefin.Wherein, excellent
Choosing, polyolefinic glass transition temperature is 80-180 DEG C.
Further, incompatible resin is selected from polypropylene, polymethylpentene or cyclic olefine copolymer.
Or, in described high-stiffness reflectance coating, described reflecting layer includes following components:
Polyester is 53-84%,
Foaming agent (incompatible resin) is 2-30%,
Light stabilizer is 1-4%,
Crystalline plastics are 1-10%,
Inorganic particles are 1-3%；
Described top layer includes following components:
Polyester is 87-98%,
Crystalline plastics are 1-10%,
Inorganic particles are 1-3%.
Further, in described high-stiffness reflectance coating, described reflecting layer includes following components:
Polyester is 63-66%,
Foaming agent is 23%,
Light stabilizer is 1-4%,
Crystalline plastics are 7%,
Inorganic particles are 2.5-3%.
Further, described top layer includes following components:
Polyester is 89-95%,
Crystalline plastics are 4-9%,
Inorganic particles are 1-3%.
Further, described top layer includes following components:
Polyester is 90.5%,
Crystalline plastics are 7%,
Inorganic particles are 2.5%.
Further, described top layer includes following components:
Pet is 89-95%, and pbt is 4-9%, tio2For 1-3%.
Further, in described high-stiffness reflectance coating, described polyester is pet.
Further, in described high-stiffness reflectance coating, described Crystalline plastics are selected from polyethylene (pe), polypropylene
(pp), polytetrafluoroethylene (PTFE) (ptfe), polyformaldehyde (pom), polyamide (pa6), nylon (pa66) or polybutylene terephthalate
One of ester (pbt) or the mixture of two kinds of wherein at least.
Further, in described high-stiffness reflectance coating, content in reflecting layer for the described Crystalline plastics is 1%-
10%, described content is weight/mass percentage composition.
Further, the preferred pbt of described Crystalline plastics.
Further, described inorganic particles are in titanium oxide, aluminum oxide, zinc oxide, magnesia, calcium sulfate, barium sulfate
A kind of or two kinds of wherein at least mixture.
Further, the particle diameter of described inorganic particles is 0.1 μm -5 μm.
Further, described inorganic particles, preferably titanium oxide.Further, described titanium oxide, preferably rutile-type
Titanium dioxide.
Because rutile titanium dioxide crystal structure is fine and close, refractive index is high, big with polyester resin refringence, can obtain
To the interface of high reflection, therefore more preferably rutile titanium dioxide.Further, the particle diameter of rutile titanium dioxide particle
For 0.1-15 μm, preferably 0.5-10 μm, or preferably 0.1 μm -5 μm, if less than 0.1 μm, then do not have obvious diffusion
Effect, if greater than 15 μm, is then coated with relatively difficult, and particle comes off unavoidably.
Further, light stabilizer be selected from O-hydroxyl-diphenyl ketone class, benzotriazole, salicylic acid esters, triazines or
Group-substituted acrylonitrile light stabilizer.
The present invention also provides a kind of purposes of high-stiffness reflectance coating, and described reflectance coating is used for side entering type liquid crystal display.
The present invention also provides the preparation method of above-mentioned high-stiffness reflectance coating, and methods described comprises the steps:
(1) a layer raw material is pressed proportioning and is weighed mixing, and b layer raw material is pressed proportioning and weighed mixing,
(2) co-extrusion, drawing process is utilized to produce the reflectance coating of ab or aba structure.
Further, in described drawing process, longitudinal drawing temperature is: 70 DEG C -90 DEG C, longitudinal stretching ratio is 3.2-
4.5, transverse drawing temperature is: 90 DEG C -120 DEG C, cross directional stretch ratio is 3.2-4.5.
Further, in die head co-extrusion, a layer passes through extrusion molding in b layer for a layer raw material of mixing and the b layer raw material mixing
Top layer, afterwards stretch film forming.
Compared with existing reflectance coating, the having the beneficial effects that of high-stiffness reflectance coating that the present invention provides: 1, in reflectance coating
In top layer (a), filling inorganic particles, have higher hardness after this polyester film layer extrusion molding, thus it is overall to improve reflectance coating
Deflection, with the addition of a certain amount of inorganic particles in reflecting layer (b) simultaneously, make this coating can not destroy reflecting effect
On the basis of increase the scattering to incident light so that the light reflecting evenly, soft, and titanium dioxide fine particles and pet
Refringence is larger, can form multiple reflectings surface, be conducive to the reflection to incident light.2nd, due to reflecting properties and diffusion
It is incorporated on a film, it is possible to reduce or remove diffusion barrier, so that the loss of light is reduced, and make Downstream processing flow process greatly simple
Change, improve production efficiency, improve yield rate, be conducive to the reduction of production cost, and play energy-saving effect.And,
The high-stiffness reflectance coating that the present invention provides is lamination polyester reflective film, and deflection is good, brightness is high, optical characteristics is excellent, contributes to light
Learn the raising of the quality of product.
Brief description
The structural representation of the high-stiffness reflectance coating that Fig. 1 provides for the present invention.
Specific embodiment
As shown in figure 1, the present invention provides a kind of high-stiffness reflectance coating, described reflectance coating includes reflecting layer (b layer) 1 and top layer
(a layer) 2, is added with Crystalline plastics in described reflecting layer 1, has micropore 101 in described reflecting layer 1；Add in described top layer 2
Added with inorganic particles 202；Described reflectance coating includes aba three-decker: reflecting layer is b layer, and top layer is a layer.
The method of testing of the main performance of high-stiffness reflectance coating that the present invention provides is summarized as follows:
1st, deflection
The high-stiffness reflectance coating that embodiment is provided cuts into the elongate in shape diaphragm of 5cm × 40cm, by one end of diaphragm
It is placed in parallel on table side, weight in pressure, the diaphragm portion length on desktop is 10cm, and the diaphragm portion length stretching out desktop is
30cm, using horizontal range d (cm) at diaphragm flexes end to desktop edge as the numerical value characterizing deflection, the bigger table of deflection numerical value
The very property of bright diaphragm is better.
2nd, brightness
The high-stiffness reflectance coating that embodiment is provided is assembled into back light unit (referred to as backlight), sending out backlight unit
Light face is divided into 2 × 2 4th area, is measured using the front face brightness that Fu Shida bm-7a luminance meter is directed to after lighting 1 hour.Measure
Angle is 1 °, and luminance meter is 50cm with the distance of backlight one side light-emitting area.Try to achieve 4 portions in the face of backlight one side light-emitting area
The arithmetic mean of instantaneous value of the brightness of position is as brightness.
The high-stiffness reflectance coating that example 1 below -13 provides is ab double-layer structure.The high-stiffness that embodiment 14-16 provides
Reflectance coating is aba three-decker.
In example below, foaming agent used (or claiming incompatible resin) is selected from polypropylene, polymethylpentene or cyclenes
Hydrocarbon copolymer, light stabilizer is selected from O-hydroxyl-diphenyl ketone class, benzotriazole, salicylic acid esters, triazines or replaces propylene
Nitrile light stabilizer.
Embodiment 1
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 53%, pbt is 10%, foaming agent
Cyclic olefine copolymer is 30%, and O-hydroxyl-diphenyl ketone class light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 97%, tio2For 3%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 2
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 56%, pbt is 7%, and foaming agent gathers
Methylpentene is 30%, and O-hydroxyl-diphenyl ketone class light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 99%, tio2For 1%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 3
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 59%, pbt is 4%, and foaming agent gathers
Methylpentene is 30%, and benzotriazole light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 98%, tio2For 2%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 4
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 62%, pbt is 1%, foaming agent ring
Olefin copolymer is 30%, and benzotriazole light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 87%, pbt is 10%, tio2For 3%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 5
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 63%, pbt is 7%, and foaming agent gathers
Propylene is 23%, and triazines as light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 90.5%, pbt is 7%, tio2For 2.5%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 6
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 70%, pbt is 7%, and foaming agent gathers
Methylpentene is 16%, and group-substituted acrylonitrile light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 98%, pbt is 1%, tio2For 1%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 7
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 77%, pbt is 7%, and foaming agent gathers
Methylpentene is 9%, and salicylate light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 97%, tio2For 3%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 8
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 84%, pbt is 7%, foaming agent ring
Olefin copolymer is 2%, and triazines as light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 97%, tio2For 3%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 9
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 63%, pbt is 7%, and foaming agent gathers
Propylene is 23%, and triazines as light stabilizer is 4%, tio2For 3%.
The proportioning that a layer is is: pet is 95%, pbt is 4%, tio2For 1%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 10
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 64%, pbt is 7%, and foaming agent gathers
Propylene is 23%, and triazines as light stabilizer is 3%, tio2For 3%.
The proportioning that a layer is is: pet is 90.5%, pbt is 7%, tio2For 2.5%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 11
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 65%, pbt is 7%, and foaming agent gathers
Propylene is 23%, and triazines as light stabilizer is 2%, tio2For 3%.
The proportioning that a layer is is: pet is 90%, pbt is 7%, tio2For 3%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 12
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 66%, pbt is 7%, and foaming agent gathers
Propylene is 23%, and triazines as light stabilizer is 1%, tio2For 3%.
The proportioning that a layer is is: pet is 89%, pbt is 9%, tio2For 2%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 13
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 64.5%, pbt is 7%, foaming agent
Polypropylene is 23%, and triazines as light stabilizer is 3%, tio2For 2.5%.
The proportioning that a layer is is: pet is 90.5%, pbt is 7%, tio2For 2.5%.
300 μm of reflectance coating gross thickness, in ab structure: a thickness degree is 30 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 14
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 65%, pbt is 7%, foaming agent ring
Olefin copolymer is 23%, and O-hydroxyl-diphenyl ketone class light stabilizer is 3%, tio2For 2%.
The proportioning that a layer is is: pet is 99%, tio2For 1%.
300 μm of reflectance coating gross thickness, in aba structure: the thickness of each a layer is 15 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 15
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 65.5%, pbt is 7%, foaming agent
Polymethylpentene is 23%, and group-substituted acrylonitrile light stabilizer is 3%, tio2For 1.5%.
The proportioning that a layer is is: pet is 98%, tio2For 2%.
300 μm of reflectance coating gross thickness, in aba structure: the thickness of each a layer is 15 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
Embodiment 16
The high-stiffness reflectance coating that the present invention provides, wherein, the proportioning of b layer is: pet is 66%, pbt is 7%, and foaming agent gathers
Methylpentene is 23%, and benzotriazole light stabilizer is 3%, tio2For 1%.
The proportioning that a layer is is: pet is 97%, tio2For 3%.
300 μm of reflectance coating gross thickness, in aba structure: the thickness of each a layer is 15 μm about.
Respectively in above ratio mix, coextrusion stretching film forming, record draft temperature, film thickness monitoring at 300 μm, test film
Deflection, film is assembled into backlight test brightness.
The proportioning of the b layer in technical scheme described in table 1 embodiment 1-16
| Embodiment | pet | pbt | Foaming agent | Light stabilizer | tio2 | Thickness (μm) |
| 1 | 53.0 | 10.0 | 30.0 | 4.0 | 3.0 | 300 |
| 2 | 56.0 | 7.0 | 30.0 | 4.0 | 3.0 | 300 |
| 3 | 59.0 | 4.0 | 30.0 | 4.0 | 3.0 | 300 |
| 4 | 62.0 | 1.0 | 30.0 | 4.0 | 3.0 | 300 |
| 5 | 63.0 | 7.0 | 23.0 | 4.0 | 3.0 | 300 |
| 6 | 70.0 | 7.0 | 16.0 | 4.0 | 3.0 | 300 |
| 7 | 77.0 | 7.0 | 9.0 | 4.0 | 3.0 | 300 |
| 8 | 84.0 | 7.0 | 2.0 | 4.0 | 3.0 | 300 |
| 9 | 63.0 | 7.0 | 23.0 | 4.0 | 3.0 | 300 |
| 10 | 64.0 | 7.0 | 23.0 | 3.0 | 3.0 | 300 |
| 11 | 65.0 | 7.0 | 23.0 | 2.0 | 3.0 | 300 |
| 12 | 66.0 | 7.0 | 23.0 | 1.0 | 3.0 | 300 |
| 13 | 64.5 | 7.0 | 23.0 | 3.0 | 2.5 | 300 |
| 14 | 65.0 | 7.0 | 23.0 | 3.0 | 2.0 | 300 |
| 15 | 65.5 | 7.0 | 23.0 | 3.0 | 1.5 | 300 |
| 16 | 66.0 | 7.0 | 23.0 | 3.0 | 1.0 | 300 |
The Evaluation results of the high-stiffness reflectance coating that table 2 embodiment 1-16 provides
Test result can draw as shown in Table 2, and the deflection of the high-stiffness reflectance coating that the present invention provides is good, brightness is high.Special
Other, the deflection of the high-stiffness reflectance coating obtained by embodiment 5,9-13 is more than 22.5cm, and brightness is more than 5620cd/m2, comprehensive
Better performances.Particularly, embodiment 13 is deflection, brightness optimal case.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.Every
The impartial change done according to present invention and modification, are encompassed by the scope of the claims of the present invention.
Claims (7)
1. a kind of high-stiffness reflectance coating it is characterised in that: described reflectance coating includes reflecting layer and top layer, in described reflecting layer add
There are Crystalline plastics, in described reflecting layer, there is micropore；It is added with inorganic particles in described top layer；Described reflectance coating includes ab
Double-layer structure: reflecting layer is b layer, top layer is a layer；Or, described reflectance coating includes aba three-decker: reflecting layer is b layer, table
Layer is a layer；
Described reflecting layer includes following components: polyester is 53-84%, and foaming agent is 2-30%, and light stabilizer is 1-4%, crystallization
Type polymer is 1-10%, and inorganic particles are 1-3%；
Described top layer includes following components: polyester is 97-99%；Inorganic particles are 1-3%；Or, described top layer includes following
Component: polyester is 87-98%, Crystalline plastics are 1-10%, and inorganic particles are 1-3%；
Described percentage composition is weight/mass percentage composition.
2. high-stiffness reflectance coating according to claim 1 is it is characterised in that described reflecting layer includes following components:
Polyester is 63-66%,
Foaming agent is 23%,
Light stabilizer is 1-4%,
Crystalline plastics are 7%,
Inorganic particles are 2.5-3%.
3. high-stiffness reflectance coating according to claim 1 is it is characterised in that described top layer includes following components:
Polyester is 89-95%,
Crystalline plastics are 4-9%,
Inorganic particles are 1-3%.
4. the high-stiffness reflectance coating according to one of claim 1-3 is it is characterised in that described polyester is pet.
5. the high-stiffness reflectance coating according to one of claim 1-3 is it is characterised in that described Crystalline plastics are selected from poly-
Ethene (pe), polypropylene (pp), polytetrafluoroethylene (PTFE) (ptfe), polyformaldehyde (pom), polyamide (pa6), nylon (pa66) or poly-
One of mutual-phenenyl two acid bromide two alcohol ester (pbt) or the mixture of two kinds of wherein at least.
6. a kind of purposes of high-stiffness reflectance coating as claimed in claim 1 is it is characterised in that described reflectance coating is used for side entering type
Liquid crystal display.
7. the preparation method according to one of claim 1-3 described high-stiffness reflectance coating is it is characterised in that under methods described includes
State step:
(1) a layer raw material is pressed proportioning and is weighed mixing, and b layer raw material is pressed proportioning and weighed mixing,
(2) co-extrusion, drawing process is utilized to produce the reflectance coating of ab or aba structure.
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| CN201510073532.2A CN104656172B (en) | 2015-02-12 | 2015-02-12 | High-stiffness reflective film |
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| CN104656172B true CN104656172B (en) | 2017-01-18 |
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| CN105619992A (en) * | 2016-03-18 | 2016-06-01 | 上海康瑞纸业有限公司 | Reflective paper |
| CN106908886A (en) * | 2017-04-18 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of property endured coating reflectance coating high and preparation method thereof |
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| US20060272766A1 (en) * | 2005-06-03 | 2006-12-07 | Hebrink Timothy J | Optical bodies and method of making optical bodies including acrylate blend layers |
| JP2008233339A (en) * | 2007-03-19 | 2008-10-02 | Mitsubishi Plastics Ind Ltd | Reflection film and reflection plate |
| CN202071423U (en) * | 2011-05-11 | 2011-12-14 | 武汉金牛经济发展有限公司 | High-reflectivity and high-stiffness light reflection film |
| WO2013002595A2 (en) * | 2011-06-30 | 2013-01-03 | Kolon Industries, Inc. | White film |
| CN103869393A (en) * | 2013-12-13 | 2014-06-18 | 合肥乐凯科技产业有限公司 | Reflective film for liquid crystal displayer |
| CN103753920B (en) * | 2013-12-27 | 2015-11-25 | 四川东方绝缘材料股份有限公司 | Multi-layer co-extrusion two-way stretching light reflective Mylar and manufacture method thereof |
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Address after: Qingfeng Road, Jiangbei District 315000 in Zhejiang city of Ningbo province No. 999 Applicant after: Ningbo, Changyang, Polytron Technologies Inc Address before: 315031 Zhejiang province Jiangbei District of Ningbo City Green Road Zhu Xiang (1) - (4) Applicant before: Ningbo Changyang Technology Co., Ltd. |
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Application publication date: 20150527 Assignee: Ningbo Changlong New Material Co.,Ltd. Assignor: NINGBO SOLARTRON TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000199 Denomination of invention: A high stiffness reflective film Granted publication date: 20170118 License type: Common License Record date: 20210831 |