CN104345507B - Space navigation level polyimide dispersed liquid crystal electronic-control film and preparation method thereof - Google Patents
Space navigation level polyimide dispersed liquid crystal electronic-control film and preparation method thereof Download PDFInfo
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- CN104345507B CN104345507B CN201410548670.7A CN201410548670A CN104345507B CN 104345507 B CN104345507 B CN 104345507B CN 201410548670 A CN201410548670 A CN 201410548670A CN 104345507 B CN104345507 B CN 104345507B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A space navigation level polyimide dispersed liquid crystal electronic-control film and a preparation method thereof belongs to the field of photoelectric materials. The space navigation level polyimide dispersed liquid crystal electronic-control film is prepared from Kapton polyimide which is used as a conducting film, fluorine-containing polyimide and liquid crystal SLA1717 by a TIPS (thermally induced phase separation) method. A series of PDLC films with different electro-optical performance are prepared by controlling different liquid crystal contents and cooling speeds, and the performance comprises threshold voltage, driving voltage, response time, contrast and the like. The film has the outstanding advantages that the PDLC films prepared from polyimide can be used for orientation films serving as orientation films of solar sails in the spaceflight field, and overcomes the hostile environment with strong radiation and high/low temperature in deep sky. The special photoelectric performance is utilized, sunlight is utilized to enable the solar sails to perform orientation movement in the outer space, a great amount of energy is saved, and the weight of the solar sails is reduced because the carried energy is reduced.
Description
Technical field
The present invention relates to PDLC (PDLC) film that a class contains high-performance Kapton type polyimides, category
In field of photovoltaic materials.
Background technology
Survey of deep space is significant, can further answer the earth how to originate from develop, planet and the solar system are actually
How to be formed and developed, the mankind whether unique life in universe, the earth future will how a series of problems, such as, while having
Beneficial to mankind's active development and utilizing space resources.
How the specified location that deep space probe is accurately transported in remote space is still to hinder deep space to visit at present
Survey the subject matter of development.Famous astronomer Kepler it is contemplated that any energy should not be carried, relied solely on too before 400 years
Solar ray energy can make universe sailing boat gallop space.Nineteen twenty-four, the pioneer Constantine Qi Aoerkefusi of Russia's aerospace industry
Base and its colleague's bright Dare of Friedrich are clearly proposed " with pushing away produced by the sunlight shone on very thin huge speculum
Power obtains astronautical speed ".The subsequent bright Dare of scientist proposes solar sail --- a kind of super thin metal of bag on rigid plastics
The imagination of sail.Solar sail is one of greatest invention of the mankind.So far, the mankind make the power of spacecraft with rocket, fire
Arrow need to consume fuel and combustion-supporting oxygen, no matter carry and how much exhaust at last, thus the scope that the mankind can roam in universe
It is extremely limited.If the light that successfully can be sent by the use of fixed star as the such as sun is used as power, then would be possible to most
Cosmonautic energy problem is solved eventually.The birth of solar sail would be possible to complete the mission.
At present, the U.S., Russia and Japan and other countries are all attempting transmitting space sail.But the space sail that only Japan launches
Successfully launch and set the sea.Japanese aerospace survey office has succeeded in sending up on May 21st, 2010 and has been named as " Icarus
(IKAROS) solar sail ".Solar sail successfully expands 20 meters of diagonal line length, thick 7.5 microns polyimides windsurfing, by too
The optical pressure that sunlight is produced obtains acceleration.Controllers change the reflectance factor of windsurfing to control by open and close liquid crystal orientating membrane
The attitude of aircraft processed.On July 23rd, 2010, mankind's first passage changes the reflectivity success of the liquid crystal orientating membrane in solar sail face
Control the flight attitude of solar sail.This liquid crystal orientating membrane is a kind of polymer dispersed liquid crystal film with polyimides as matrix.
Solar sail utilizes the advantage of sunshine energy saving as the focus of space research because of it.At present, the domestic research to solar sail
Also in the starting stage, wherein the oriented film of control solar sail directed movement is the key of research.Therefore, research is with polyimides
For the polymer dispersed liquid crystal film of matrix is basis of the domestic successful with solar sail.
Polymer dispersed liquid-crystal film is a kind of novel liquid crystal functional film material, in large scale flexible display device, non-thread
The aspects such as property optical material, electric-controlled intelligent glass, permselectivity membrane, temperature-sensitive device, liquid crystal grating, holographic film, photoswitch
Show great application prospect.PDLC material is developed and all great glamour of the aspect of Study of basic principle two in application device, because
And study frontier very active in turning into liquid crystal material field.But, because polymeric matrix is mostly polyacrylate, ring
Oxygen tree fat and thio-alcohol, its combination property such as high-low temperature resistant, chemical stability, mechanical strength and anti-radiation performance etc. can not expire
The requirement of sufficient space adverse circumstances, therefore the product for civilian use can only be used as, it is impossible to apply in space industry.Polyimides is because with resistance to
High/low temperature, high intensity and high-modulus, low thermal coefficient of expansion and dielectric constant, excellent insulating properties and radioresistance etc. are excellent
Performance and be widely used in the industrial circles such as space flight, military affairs, electric and electronic.Therefore, Study on Polyimide PDLC films are carved
Do not allow to delay, be basis of the domestic successful with solar sail.
The content of the invention
Solar sail oriented film (the polyimides PDLC in space industry can be applied it is an object of the invention to provide a class
Film), the PDLC films prepared with the method are because of the excellent combination property-high-low temperature resistant of polyimides, high intensity and high-modulus, low
Thermal coefficient of expansion and dielectric constant, excellent insulating properties and radioresistance etc., can meet the adverse circumstances of deep space, and then
Apply in space industry.The present invention relates to two kinds of polyimide molecule structural formulas it is as follows：
To reach above-mentioned purpose, the technical scheme is that：
The aerospace upper and lower two-layer of the level automatically controlled film of polyimides dispersed LCD is conducting film, central filler polymeric matrix and liquid
Brilliant mixture；Described conducting film is Kapton type Kaptons, and described polymeric matrix is fluorinated polyimide,
The mass fraction that wherein liquid crystal accounts for mixture is 40%-90%；Described mixture is the mixing of fluorinated polyimide and liquid crystal
Thing.Described liquid crystal uses SLC1717, and described automatically controlled film thickness is 10-40 microns.
The preparation method of the aerospace level automatically controlled film of polyimides dispersed LCD, comprises the following steps：
Step one, fluorinated polyimide is mixed according to a certain percentage with liquid crystal, mixture is put into centrifuge tube,
Dissolved with tetrahydrofuran low boiling point solvent, after being well mixed, be dried, it is ensured that solvent volatilizees completely；Wherein liquid crystal is accounted for
The 40%-90% of mixture quality fraction；
Step 2, the mixture after volatilization is heated to molten condition, under keeping warm mode, by certain thickness mixture
It is applied on conductive Kapton types polyimide film, then covers another layer of conduction Kapton type polyimide film；With 0.5 DEG C/
The cooling velocity of min-80 DEG C/min, is cooled to room temperature, forms the automatically controlled film of polyimides dispersed LCD.
Described certain thickness is controlled between 10-40 microns.
The present invention prepares PDLC films from thermally induced phase separation.From a kind of solvable fluorinated polyimide, by itself and
Liquid crystal is dissolved in lower boiling solvent according to different proportionings, solvent flashing after being well mixed, and then heats the mixture to melt
Melt state, in pouring into two-layer conduction Kapton type polyimide films under keeping warm mode, thickness control in 20 microns, according to
Different cooling velocities is cooled to room temperature state, forms the PI-PDLC films of different electro-optical properties.The advantage of this method is
The temperature dependency of particulate is strong in process is simple, but obtained film, and temperature directly influences particle diameter and the distribution of liquid crystal particle, institute
It is key factor to control different cooling velocities.It is big using the liquid crystal droplet formed under scanning electron microscopic observation different cooling
It is small, and its electro-optical properties is combined, select suitable cooling velocity and be controlled by, prepare excellent pdlc film.
There is advantages below because the present invention uses above technical scheme, the present invention：Due to Kapton type polyimides
Excellent properties, such as heat resistance are very good, are resistant to extremely low temperature, and high mechanical strength, stable chemical nature, creep resisting ability is strong, resistance to
Radiation property is good, and frictional behaviour is excellent, and dielectric properties are excellent etc. so that polyimides pdlc film can not only be used as the product for civilian use,
Can also apply in space industry.Wherein, in Japan, solar sail is had been able to using polyimides pdlc film as oriented film, profit
Solar sail is promoted to be oriented motion with the sun equation of light of its special electro-optical properties-generation, not only energy saving, moreover it is possible to mitigate
Carry the excess weight of the energy, an important breakthrough of the application of solar sail undoubtedly space industry.Although China is in space flight thing
Achieved in industry and rapidly developed, but the starting stage is but also in survey of deep space, especially solar sail engineering is also to begin
Started project verification in 2011.So, research of the present invention to domestic solar sail has important promotion meaning.
Fluorine-containing PI-PDLC films are contrasted with the radiation-resistant property of common pdlc film purchased in market
| Performance | Common pdlc film purchased in market | Fluorine-containing PI-PDLC films |
| Resistance to irradiation (rad) | 106 | 1010 |
| Cycle-index (secondary) | 70 | 500 |
Brief description of the drawings
Fig. 1 is the automatically controlled membrane structure figure of polyimides dispersed LCD
Specific embodiment
The present invention is described in further detail with reference to embodiment：
Case study on implementation one：The first step：According to fluorinated polyimide and liquid crystal 60:40 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 0.2 DEG C/min, 0.5 DEG C/
Min is cooled to room temperature state, forms the PDLC films of different electro-optical properties.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Case study on implementation two：The first step：According to fluorinated polyimide and liquid crystal 30:70 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 5 DEG C/min, 10 DEG C/min
Room temperature state is cooled to, the PDLC films of different electro-optical properties are formed.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Case study on implementation three：The first step：According to fluorinated polyimide and liquid crystal 25:75 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 5 DEG C/min, 10 DEG C/min
Room temperature state is cooled to, the PDLC films of different electro-optical properties are formed.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Case study on implementation four：The first step：According to fluorinated polyimide and liquid crystal 20:80 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 5 DEG C/min, 10 DEG C/min
Room temperature state is cooled to, the PDLC films of different electro-optical properties are formed.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Case study on implementation five：The first step：According to fluorinated polyimide and liquid crystal 15:85 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 10 DEG C/min, 20 DEG C/
Min is cooled to room temperature state, forms the PDLC films of different electro-optical properties.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Case study on implementation six：The first step：According to fluorinated polyimide and liquid crystal 10:90 ratio, weighs a certain amount of mixing
Thing is placed in 5ml centrifuge tubes, is dissolved with tetrahydrofuran low boiling point solvent, is then stirred mixture shaken well with oscillator
Sufficient solution will be mixed after uniform to drop on clean sheet glass, the sheet glass that will finally coat is placed in vacuum drying chamber,
24h is vacuumized under room temperature state, to ensure that solvent can volatilize completely.
Second step：Mixture after volatilization is heated to molten condition, after being stirred with clip, in keeping warm mode
Under, it is uniformly applied on the conductive Kapton types polyimide film of same heating, thickness is controlled at 20 microns with glass microballoon
Left and right, is then covering another layer of electric-conducting polyimide film.Finally, with different cooling velocities such as 20 DEG C/min, 30 DEG C/
Min is cooled to room temperature state, forms the PDLC films of different electro-optical properties.
3rd step：The sample liquid crystal comprehensive parameters instrument that will be prepared tests its electro-optical properties, such as threshold voltage, drives
Voltage, contrast and response time etc..
4th step：In order to study the rule between the size of liquid crystal droplet in pdlc film and cooling velocity, using scanning electricity
Sem observation liquid crystal droplet mesh size.First, the two-layer electric-conducting polyimide of sample is raised, is placed on leaching in cyclohexane solvent
Bubble 96h, it is therefore an objective to the liquid crystal droplet of film surface is removed, polymer network is left behind.Then, sample is placed on into vacuum to do
In dry case, 12h is vacuumized at 80 DEG C, thoroughly remove solvent.Finally, SEM electron microscopic samples are prepared, carbon is sprayed in sample surfaces, profit
With scanning electron microscopic observation liquid crystal droplet size.
Claims (5)
1. aerospace level the automatically controlled film of polyimides dispersed LCD, it is characterised in that：The LCD electric-controlled bilevel conducting film of film
It is Kapton type polyimides, the polymeric matrix in the middle of LCD electric-controlled film is fluorinated polyimide, wherein liquid crystal accounts for mixing
The mass fraction of thing is 40%-90%；Described mixture is the mixture of fluorinated polyimide and liquid crystal；Polymer dispersion liquid
Brilliant film thickness is 10-40 microns；Radioresistance：1010Rad, cycle-index 500 times.
2. aerospace level the automatically controlled film of polyimides dispersed LCD preparation method, it is characterised in that：
Step one, fluorinated polyimide is mixed with liquid crystal, mixture is put into centrifuge tube, with organic solvent, carried out
Dissolving, after being well mixed, is dried, it is ensured that solvent volatilizees completely；Wherein liquid crystal accounts for the 40%- of mixture quality fraction
90%；
Step 2, the mixture after volatilization is heated to molten condition, under keeping warm mode, certain thickness mixture is applied to
On conductive Kapton types polyimide film, another layer of conduction Kapton type polyimide film is then covered；With 0.5 DEG C/min-80
DEG C/cooling velocity of min, and room temperature is cooled to, form the aerospace level automatically controlled film of polyimides dispersed LCD.
3. the preparation method of the aerospace as claimed in claim 2 level automatically controlled film of polyimides dispersed LCD, it is characterised in that：Institute
The organic solvent stated is the low boiling point solvent that can dissolve fluorine polyimides.
4. the preparation method of the aerospace as claimed in claim 2 level automatically controlled film of polyimides dispersed LCD, it is characterised in that：Institute
The certain thickness stated is controlled between 10-40 microns.
5. the preparation method of the aerospace as claimed in claim 3 level automatically controlled film of polyimides dispersed LCD, it is characterised in that：Institute
The low boiling point solvent of the dissolvable fluorine polyimides stated is tetrahydrofuran or dichloromethane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410548670.7A CN104345507B (en) | 2014-10-16 | 2014-10-16 | Space navigation level polyimide dispersed liquid crystal electronic-control film and preparation method thereof |
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| CN201410548670.7A CN104345507B (en) | 2014-10-16 | 2014-10-16 | Space navigation level polyimide dispersed liquid crystal electronic-control film and preparation method thereof |
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| CN104345507B true CN104345507B (en) | 2017-05-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110540645B (en) | 2019-09-12 | 2021-03-16 | 深圳市华星光电半导体显示技术有限公司 | Prepolymer of polymer dispersed liquid crystal, polymer dispersed liquid crystal composition and display panel |
| CN113355107A (en) * | 2021-07-05 | 2021-09-07 | 合肥中聚合臣电子材料有限公司 | Liquid crystal orientation agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04110392A (en) * | 1990-08-31 | 1992-04-10 | Nippon Telegr & Teleph Corp <Ntt> | Ferroelectric liquid crystal element |
| JPH05224187A (en) * | 1992-02-13 | 1993-09-03 | Dainippon Ink & Chem Inc | Liquid crystal device |
| JP2007031622A (en) * | 2005-07-28 | 2007-02-08 | Tomoegawa Paper Co Ltd | Polyimide resin and film with conductor using the same |
| CN101611117A (en) * | 2006-11-30 | 2009-12-23 | 索尼德国有限责任公司 | The method of the liquid crystal of preparation polymer dispersed |
| CN101834015A (en) * | 2010-03-31 | 2010-09-15 | 鞍山华辉光电子材料科技有限公司 | Flexible transparent conducting film for polyimide substrate and preparation method thereof |
-
2014
- 2014-10-16 CN CN201410548670.7A patent/CN104345507B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04110392A (en) * | 1990-08-31 | 1992-04-10 | Nippon Telegr & Teleph Corp <Ntt> | Ferroelectric liquid crystal element |
| JPH05224187A (en) * | 1992-02-13 | 1993-09-03 | Dainippon Ink & Chem Inc | Liquid crystal device |
| JP2007031622A (en) * | 2005-07-28 | 2007-02-08 | Tomoegawa Paper Co Ltd | Polyimide resin and film with conductor using the same |
| CN101611117A (en) * | 2006-11-30 | 2009-12-23 | 索尼德国有限责任公司 | The method of the liquid crystal of preparation polymer dispersed |
| CN101834015A (en) * | 2010-03-31 | 2010-09-15 | 鞍山华辉光电子材料科技有限公司 | Flexible transparent conducting film for polyimide substrate and preparation method thereof |
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| CN104345507A (en) | 2015-02-11 |
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