CN206431308U - A kind of optical multilayer gradient film and its preparation facilities - Google Patents
A kind of optical multilayer gradient film and its preparation facilities Download PDFInfo
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- CN206431308U CN206431308U CN201621332277.5U CN201621332277U CN206431308U CN 206431308 U CN206431308 U CN 206431308U CN 201621332277 U CN201621332277 U CN 201621332277U CN 206431308 U CN206431308 U CN 206431308U
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Abstract
The utility model discloses a kind of optical multilayer gradient film and its preparation facilities, the optical thin film is formed by stacking by 2M group unit membranes, there is each unit membrane refractive index larger polymeric material A and B alternately to form N number of identical periodic structure, polymeric material A refractive index is n1, and polymeric material B refractive index is n2；Preceding M groups realize that, to a kind of high reflection of wave band, rear M groups realize the high reflection to another wave band.Described device mainly includes the thick stacking device of fusion plastification feeding device, junction station, multiple uniform stacking devices, Gradient Film and shaped device.The total reflection of a variety of wave bands can be achieved using the larger material of two kinds of refractive index in the utility model；The controllable shaping of thickness is realized using multiple uniform stacking devices, the thick stacking device of Gradient Film, thickness reaches nanoscale, and production cost is low, and with application widely.Film and preparation facilities manufacturing process of the present utility model is simple, and precision is easily guaranteed that, material adaptability and manufacture efficiency are greatly improved.
Description
Technical field
The present invention relates to thin film technique field, more particularly to a kind of novel optical multilayered gradient film and its preparation facilities.
Background technology
Optical thin film is a kind of film for the transmissivity and reflectivity effect for reaching and changing predetermined band light.It is, in general, that film
The thickness of layer can change the effect wave band of optical thin film in the magnitude of optical wavelength by changing the thickness of film layer.For fixation
The film layer of thickness, the corresponding light path of light (i.e. phase difference) of different-waveband is different, and the intensity after its coherent superposition is different, and this is just right
Answer different transmissivity and reflectivity.Currently, optical thin film is widely used to optics and photoelectron technical field, for making
Make the various instruments with specific optical effect.
In actual application, purity of the preferable optical thin film of optical effect to Coating Materials, the thickness to film layer
Requirement with uniformity is higher, therefore its price is also costly, which limits this optical thin film to other industries
Using and promote.
Another aspect plural layers technology is 1970s invention, and it is that have not using two or more
If the alternating layer film of the transparent thermoplastics repeated combination formation dried layer uniform parallel with refractive index.
A kind of device for preparing nano laminated composite material disclosed in Chinese patent application CN200910237622.5, mainly
Include fusion plastification feeding device, junction station, stacking device, shaped device, fusion plastification feeding device, junction station, stacking device,
Be sequentially connected in series before and after shaped device, melt is divided equally in stacking device entrance, along respective runner reverse, expansion, it is thinning, in lamination device
Outlet merges into one multilayer melt, subsequently into next lamination device, repeats above procedure.Pass through constantly dividing for stacking device
Cut, deploy, draw it is thin, converge, finally give with the homogenous composite with alternating structure for specifying the number of plies, but this method
The effect of multilayered gradient film can not be realized.
A kind of making of novel optical polymer composite film disclosed in Chinese patent application CN201410767872.0
Method, optical thin film is covered in substrate surface.Optical thin film is formed by stacking by M unit membrane, and each unit membrane is by N layers using poly-
The optical film that compound material is made is formed by stacking, and wherein N=2 or N=3, every layer of optical film have predetermined thickness, is appointed
Meaning adjacent two layers optical film has different refractive indexes；Multi-layer optical film stacking is placed on substrate surface using rolling device pressure
System is formed, or, multilayer optical film is made and covers using Multi-layer blown film mode it is made in matrix surface.But the system
Make that method is less efficient, and be not easy to ensure the precision of processing.
At present, using polymeric material as optical film materials, production technology is also more ripe, is optical thin film conversion
Product for ease of the popularization of application is laid a good foundation.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of novel optical multilayered gradient film and its system
Standby device.
The present invention proposes a kind of optical multilayer gradient film, and the optical thin film is formed by stacking by 2M group unit membranes, often
There is individual unit membrane refractive index larger polymeric material A and B alternately to form N number of identical periodic structure, polymeric material
The refractive index for expecting A is n1, polymeric material B refractive index is n2.Preceding M groups are realized anti-to a kind of height of wave band (such as ultraviolet)
Penetrate, rear M groups realize the high reflection to another wave band (such as infrared ray).
The unit membrane meets nd=λ/4, and wherein n is the refractive index of polymeric material, and d is the thickness in monolayer of material, and λ is
Unit membrane zone of reflections centre wavelength.
In the unit membrane, polymeric material A is corresponding refractive indices with polymeric material B periodic structures thickness ratio
Inverse, be n2/n1。
The 2M groups unit membrane zone of reflections centre wavelength is respectively λ1, λ2... ..., λ2M.Polymeric material in the unit membrane
Expecting the theoretical thickness of A/ polymeric material B periodic structures is successively：First group of (λ1/4n1)/(λ1/4n2), second group of (λ2/4n1)/
(λ2/4n2) ... ..., M groups (λM/4n1)/(λM/4n2) ... ..., 2M groups (λ2M/4n1)/(λ2M/4n2)。
A kind of preparation facilities of optical multilayer gradient film of the invention described above, mainly include fusion plastification feeding device,
The thick stacking device of junction station, multiple uniform stacking devices, Gradient Film, shaped device, fusion plastification feeding device, junction station, Duo Gejun
Be sequentially connected in series before and after the thick stacking device of even stacking device, Gradient Film, shaped device, uniform stacking device have it is multiple be together in series, it is adjacent
Normal direction of the uniform stacking device along extrusion axis is rotated by 90 ° connection, and junction station is by two strands from two fusion plastification feeding devices
Melt is overlapped into the compounding flux with double-layer structure according to polymeric material A/ polymeric material B periodic structure thickness ratios, converges
Stream device is docked with uniform stacking device, the melt canal area of uniform stacking device entrance melt canal size and the outlet being rotated by 90 °
Identical, compounding flux is averagely divided into t deciles in the width direction, and each decile continues to revolve during flow forward in uniform stacking device
It turn 90 degrees and broadening, mutually confluxes as 2 × t layers of laminated construction, the hierarchy number phase of adjacent uniform stacking device in the port of export
Together, it can also differ, the laminated construction melt enters next uniform stacking device of section and is averagely divided into m deciles again, then can obtain 2
× t × m Rotating fields melts；Any multilayer (number of plies is x) structure composite melt can be obtained by that analogy.T and m is not less than 2
Integer, x is the integer that is determined by t and m and uniform stacking device quantity.
If the number of plies enters the thick stacking device of Gradient Film for x MULTILAYER COMPOSITE melt, melt no longer by even partition, but
Gradient is divided into 2M groups in the width direction, and gradient distribution determines the thickness proportion of final unit membrane.Gradient Film thickness stacking device goes out
The corresponding 2M groups for having the identical gradient of through-thickness to split of mouth, Gradient Film thickness stacking device outlet obtains 2Mx layers of compounding flux,
Every group has x layers, and M is the integer not less than 2.Finally it is connected with shaped device, shaped device ensures that the relativeness of thickness is constant
And obtain end article.For example:By two kinds of components A and B macromolecule melt according to n2:n1, one point is saved by series connection one after confluxing
Two and two one point five of three uniform stacking devices of section, then enter one fixed width than M be 4 the thick stacking device of Gradient Film, obtain
Total number of plies is the MULTILAYER COMPOSITE melt of 2 × (2 × 5 × 5) × (2 × 4)=800 layer.The stratiform melt after shaped device comes out,
Its structural thickness ratio keeps constant, and the thickness of final film is also determined.If the gradient distribution of Gradient Film thickness stacking device
For (λ1/4n1+λ1/4n2):(λ2/4n1+λ2/4n2):…:(λM4n1+λM/4n2):…:(λ2M/4n1+λ2M/4n2), and shaped device
Exit thickness is D, then obtaining 2M unit film thickness is successively：(λ1/4n1+λ1/4n2)S,(λ2/4n1+λ2/4n2) S ...,
(λM/4n1+λM/4n2) S ..., (λ2M/4n1+λ2M/4n2) S, wherein, S=D/ (λ1/4n1+λ1/4n2+λ2/4n1+λ2/4n2+…+
λM/4n1+λM/4n2+…+λ2M/4n1+λ2M/4n2).Correspondingly, the thickness of A/B periodic structures is successively in each unit group：1st
Group (λ1/4n1) S and (λ1/4n2) S, the 2nd group of (λ2/4n1) S and (λ2/4n2) S ..., M groups (λM/4n1) S and (λM/4n2) S ...,
2M groups (λ2M/4n1) S and (λ2M/4n2)S。
In the present invention, the novel optical multilayered gradient film is on the one hand in the ultraviolet band (300- of solar spectrum
Main infrared band (800-1100nm) forms nearly 100% reflection 400nm) and in solar spectrum, in visible light wave
Section (400-800nm) has higher reflection efficiency (more than 80%), and the ultraviolet IR reflection spectrum in broadband can be achieved.Profit of the invention
With the material that two kinds of refractive index are larger, the total reflection of a variety of wave bands can be achieved, on the other hand using multiple uniform stacking devices,
Gradient Film thickness stacking device realizes the controllable shaping of thickness, and multilayer realizes that simply thickness reaches nanoscale, and production cost is low, and has
Application widely.The designing and manufacturing technique of the novel optical multilayered gradient film preparation facilities is simple, and precision is easily guaranteed that,
And the adaptability to material and the efficiency of manufacture, which have, to be greatly improved.
Brief description of the drawings
Fig. 1 is a kind of optical multilayer gradient film of the invention.
Fig. 2 is a kind of optical multilayer gradient film preparation facilities of the invention.
Fig. 3 is melt flows signal in a kind of thick stacking device of optical multilayer gradient film preparation facilities Gradient Film of the invention
Figure.
Fig. 4 is that melt flows entrance is being just in a kind of thick stacking device of optical multilayer gradient film preparation facilities Gradient Film of the invention
View.
Fig. 5 is reflection and the transmission spectrum of a kind of optical multilayer gradient film of the invention.
In figure：1 plasticizing feeding device；2 junction stations；3 uniform stacking devices；4 uniform stacking devices；5 Gradient Films thickness stacking device；6
Shaped device.
Embodiment
The present invention proposes a kind of optical multilayer gradient film, in specific implementation process, as shown in figure 1, described light
Learn film to be formed by stacking by eight groups of unit membranes, i.e. M=4, reflect two wave bands, each unit membrane has is respectively by refractive index
1.49 ± 0.01 and 1.65 ± 0.01 polymeric material PMMA and PET is alternately into 50 identical periodic structures, N=50.
Preceding four groups of realizations are to the high reflection of ultraviolet band, high reflection of the rear four groups of realizations to infrared band.
The unit membrane meets nd=λ/4, and wherein n is the refractive index of material, and d is the thickness in monolayer of material, and λ is unit membrane
Centre wavelength.
In specific implementation process, if PMMA/PET periodic structures thickness ratio 1.1, the thickness of PMMA/PET periodic structures
Degree is as follows：First group of 52.36nm/47.6nm, second group of 55.66nm/50.6nm, the 3rd group of 58.96nm/53.6nm, the 4th group
62.26nm/56.6nm, the 5th group of 141.24nm/128.4nm, the 6th group of 151.25nm/137.5nm, the 7th group of 161.15nm/
146.5nm, the 8th group of 171.16nm/155.6nm.
The present invention proposes a kind of preparation facilities of optical multilayer gradient film, as shown in Fig. 2 mainly including melting modeling
Change the thick stacking device 5 of feeding device 1, junction station 2, uniform stacking device 1, uniform stacking device 24, Gradient Film, shaped device 6, melt
Melt the thick stacking device 5 of plasticizing feeding device 1, junction station 2, uniform stacking device 1, uniform stacking device 24, Gradient Film, shaped device 6
Front and rear to be sequentially connected in series, junction station 2 is by two gangs of polymeric material melts PMMA and PET from two fusion plastification feeding devices 1
According to thickness proportion 1.1:1 is overlapped into the compounding flux with double-layer structure, and junction station 2 is docked with uniform stacking device 1, uniformly
The melt canal area of outlet of the entrance melt canal size of stacking device 1 with being rotated by 90 ° is identical, and compounding flux is along width side
To 2 deciles are averagely divided into, each decile continues to be rotated by 90 ° and broadening during flow forward in uniform stacking device 1,
The port of export mutually confluxes as 2 × 2 layers of laminated construction, the hierarchy number of uniform stacking device 1 and uniform stacking device 24 not phase
Together, the laminated construction melt is averagely divided into 5 deciles successively into the two section uniform stacking devices 24 of identical, then can obtain 2 × (2
× 5 × 5)=100 Rotating fields melt, x is 100 layers.
The 100 Rotating fields melt enters the thick stacking device 5 of Gradient Film as shown in Figure 3, melt no longer by even partition, but
Gradient is divided into 8 groups in the width direction, and the throat width ratio of 8 groups of passages is in Fig. 4：4998:5313:5628:5943:
13482:14437.5:15382.5:16338, first four groups larger with rear four groups of thickness difference, and gradient distribution determines final unit
The thickness proportion of film.Gradient Film thickness stacking device 5 exports accordingly have the identical gradient of through-thickness to split eight groups, gradient thickness
The outlet of stacking device 5 obtains 800 layers of compounding flux, and every group has 100 layers.Finally it is connected with shaped device 6, shaped device 6 ensures
The relativeness of thickness is constant and obtains end article.In specific implementation process, the exit thickness of shaped device 6 is
81522nm, and shaped device 6 ensure thickness relativeness it is constant, then obtain 8 unit film thicknesses be successively 4998nm,
A/ in 5313nm, 5628nm, 5943nm, 13482nm, 14437.5nm, 15382.5nm, 16338nm unit, each unit group
B thickness is as follows：First group of 52.36nm/47.6nm, second group of 55.66nm/50.6nm, the 3rd group of 58.96nm/53.6nm, the
Four groups of 62.26nm/56.6nm, the 5th group of 141.24nm/128.4nm, the 6th group of 151.25nm/137.5nm, the 7th group
161.15nm/146.5nm, the 8th group of 171.16nm/155.6nm.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of optical multilayer gradient film, it is characterised in that：The optical thin film is formed by stacking by 2M group unit membranes, Mei Gedan
There is first film polymeric material A and B alternately to form N number of identical periodic structure, and polymeric material A is PMMA, polymeric material B
For PET, polymeric material A refractive index is n1, and polymeric material B refractive index is n2；Preceding M groups are realized to a kind of height of wave band
Reflection, rear M groups realize the high reflection to another wave band.
2. a kind of optical multilayer gradient film according to claim 1, it is characterised in that：The 2M groups unit membrane zone of reflections
Centre wavelength is respectively λ1, λ2... ..., λ2M, the theory of polymeric material A/ polymeric material B periodic structures in the unit membrane
Thickness is successively：First group of (λ1/4n1)/(λ1/4n2), second group of (λ2/4n1)/(λ2/4n2) ... ..., M groups (λM/4n1)/
(λM/4n2) ... ..., 2M groups (λ2M/4n1)/(λ2M/4n2)。
3. a kind of optical multilayer gradient film according to claim 1, it is characterised in that：Preceding M groups are realized to ultraviolet band
High reflection, rear M groups realize the high reflection to infrared band, and M takes the thickness of 4, PMMA/PET periodic structures as follows：First group
52.36nm/47.6nm, second group of 55.66nm/50.6nm, the 3rd group of 58.96nm/53.6nm, the 4th group of 62.26nm/
56.6nm, the 5th group of 141.24nm/128.4nm, the 6th group of 151.25nm/137.5nm, the 7th group of 161.15nm/146.5nm,
8th group of 171.16nm/155.6nm.
4. a kind of preparation facilities of optical multilayer gradient film described in claim 1, it is characterised in that：Mainly include melting
The thick stacking device of plasticizing feeding device, junction station, multiple uniform stacking devices, Gradient Film and shaped device, fusion plastification feeding device,
It is sequentially connected in series before and after the thick stacking device of junction station, multiple uniform stacking devices, Gradient Film and shaped device, uniform stacking device there are multiple strings
Connection gets up, and adjacent uniform stacking device is rotated by 90 ° connection along the normal direction for extruding axis, and junction station will be from two fusion plastifications
Two strands of melts of feeding device are overlapped into double-layer structure according to polymeric material A/ polymeric material B periodic structure thickness ratios
Compounding flux, junction station docks with uniform stacking device, uniform stacking device entrance melt canal size and the outlet being rotated by 90 °
Melt canal area it is identical, compounding flux is averagely divided into t deciles in the width direction, and each decile is relayed in uniform stacking device
It is rotated by 90 ° and broadening, mutually confluxes as 2 × t layers of laminated construction, adjacent conforming layer in the port of export during continuous flow forward
The hierarchy number of folded device is identical or differs, and gained laminated construction melt enters next uniform stacking device of section and is averagely divided into m etc. again
Point, then it can obtain 2 × t × m Rotating fields melts；The structure composite melt that the number of plies is x can be obtained by that analogy；The number of plies is x's
MULTILAYER COMPOSITE melt enters the thick stacking device of a Gradient Film, and gradient is divided into 2M groups to melt in the width direction, and Gradient Film thick-layer is folded
Device outlet is corresponding a 2M groups of through-thickness identical gradient segmentation, and the outlet of Gradient Film thickness stacking device obtains 2Mx layer and is combined
Melt, every group has x layers, is finally connected with shaped device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621332277.5U CN206431308U (en) | 2016-12-07 | 2016-12-07 | A kind of optical multilayer gradient film and its preparation facilities |
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| CN201621332277.5U CN206431308U (en) | 2016-12-07 | 2016-12-07 | A kind of optical multilayer gradient film and its preparation facilities |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707374A (en) * | 2016-12-07 | 2017-05-24 | 北京化工大学 | Optical multilayer gradient thin film and preparation device thereof |
| CN112848602A (en) * | 2021-02-03 | 2021-05-28 | 畅的新材料科技（上海）有限公司 | Dual-waveband reflective polyester film |
-
2016
- 2016-12-07 CN CN201621332277.5U patent/CN206431308U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707374A (en) * | 2016-12-07 | 2017-05-24 | 北京化工大学 | Optical multilayer gradient thin film and preparation device thereof |
| CN112848602A (en) * | 2021-02-03 | 2021-05-28 | 畅的新材料科技（上海）有限公司 | Dual-waveband reflective polyester film |
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Granted publication date: 20170822 Effective date of abandoning: 20190507 |
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