CN108424540A - A kind of transparent polyimide film and preparation method thereof - Google Patents
A kind of transparent polyimide film and preparation method thereof Download PDFInfo
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- CN108424540A CN108424540A CN201810397632.4A CN201810397632A CN108424540A CN 108424540 A CN108424540 A CN 108424540A CN 201810397632 A CN201810397632 A CN 201810397632A CN 108424540 A CN108424540 A CN 108424540A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
- C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1039—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors comprising halogen-containing substituents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1042—Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
- C08G73/105—Polyimides containing oxygen in the form of ether bonds in the main chain with oxygen only in the diamino moiety
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1075—Partially aromatic polyimides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Abstract
The invention discloses a kind of preparation methods of transparent polyimide film, have steps of：1. fluorinated diamine is added in nitrogen or the polar non-solute of inert gas shielding, at 10 50 DEG C, after stirring makes it completely dissolved, the aliphatic anhydride of copolymerization acid anhydrides and certain molar fraction is added, the molar ratio for controlling diamines and acid anhydrides is 1：1 1.02, it reacts 6 24 hours, obtains transparent polyamic acid solution；2. 1. polyamic acid solution that step is obtained is with predetermined thickness even application on clean substrate, it is subsequently placed in vacuum drying oven and carries out temperature programming to certain temperature removing solvent and carry out hot imidization, after vacuum drying oven temperature is down to environment temperature, take out glass plate, demoulding, it is dry, obtain transparent polyimide film.Transparent polyimide film produced by the present invention has high transparency, superior heat-stability and good mechanical property.
Description
Technical field
The present invention relates to thin polymer film field, a kind of transparent polyimide film and preparation method thereof is specifically disclosed.
Background technology
Polyimides (PI) is navigating because it has remarkable hot property, mechanical property, electrical property and excellent comprehensive performance
The industries such as sky, space flight, automobile, machinery are widely applied.However, because its deeper color and poor light transmittance seriously limit
Its application in microelectronics and optoelectronic areas is made.Traditional Kapton is in brown color, to visible light (wavelength
400-700nm) light transmittance is relatively low, and to the visible light of 500nm, light transmittance is less than 40%；Wavelength is the visible light quilt of 400nm
100% absorbs, and seriously limits its application in photoelectric field.The color of polyimides is mainly due to aromatic polyimide point
Between son and caused by the formation of Intramolecular charge transfer complex, wherein dianhydride is electron acceptor, and diamines is electron donor.
Clear polyimides greatly facilitate its commercialization process in the application potential of flexible optoelectronic part；Optical thin film
In Flexible light-emitting diodes, flexible solar battery or photovoltaic cell, flexible thin-film transistor, flexible printed circuit board etc. is in many ways
The application in face, to the performance of polyimides, more stringent requirements are proposed；Especially its excellent comprehensive performance is many existing quotient
Not available for product material.In order to meet these requirements, organic polymer chemistry and field of chemical engineering have been developed and have been commercialized
Many kinds of different types of polyimides, are further improved its performance.
Currently, preparing transparent polyimides common method has：1) introducing fluoro-containing group, 2) introduce the larger substitution of volume
Base, 3) dissymmetrical structure introduce fat especially alicyclic structure unit, 4) using the monomer that can make backbone twist, 5) is imported, 6)
Reduce conjugated double bond structures etc..Wherein, fluorine atom is introduced into polyimides main chain or branch so that it is negative with high electricity
Property, big free volume；The lower polarizability of C-F keys simultaneously, can improve the optical transparence of polyimides, while it is molten to improve its
Solution property and reduction dielectric constant.Aliphatic polyimide then has the excellent transparency, mainly drawing due to aliphatic monomer
Enter, be based on its low molecule density and low polarity, electric charge transfer interaction can be effectively inhibited.Present invention incorporates fluorine-containing polyamides
The comprehensive advantage of imines and aliphatic polyimide provides a kind of transparent polyimide film and preparation method thereof.
Invention content
This is provided a kind of transparent it is an object of the invention to obtain a kind of transparent polyimide film of excellent combination property
Kapton and preparation method thereof.
Realizing the technical solution of the object of the invention is：
In the first aspect, the application provides a kind of preparation method of transparent polyimide film, it is characterised in that has
Following steps：1. fluorinated diamine is added in nitrogen or the polar non-solute of inert gas shielding, at 10~50 DEG C, stir
It mixes after making it completely dissolved, the aliphatic anhydride of copolymerization acid anhydrides and certain molar fraction is added, control mole of diamines and acid anhydrides
Than being 1：1~1.02, it reacts 6-24 hours, obtains transparent polyamic acid solution；
2. 1. polyamic acid solution that step is obtained on clean substrate, is subsequently placed in predetermined thickness even application
Temperature programming to certain temperature is carried out in vacuum drying oven to remove solvent and carry out hot imidization, waits for that vacuum drying oven temperature is down to environment
After temperature, substrate is taken out, is demoulded, it is dry, obtain transparent polyimide film.
In a kind of embodiment of first aspect, step 1. described in fluorinated diamine be：Bis- (the fluoroforms of 2,2'-
Base) -4,4'- diamino-phenyl ethers, one or more of 2,2'- bis- (trifluoromethyl) -4,4'- benzidines.
In a kind of embodiment of first aspect, step 1. described in copolymerization acid anhydrides be：The equal benzene tetramethyls of 1,2,4,5-
Acid dianhydride, 3,3 ', 4,4 '-benzophenone tetracid dianhydrides, 4,4 '-biphenyl ether dianhydrides, 3,3,4,4- biphenyl dianhydrides, 4,4- hexafluoro isopropyls
One or more of base phthalic anhydride.
In a kind of embodiment of first aspect, step 1. described in certain molar fraction be 0%~100%.
In a kind of embodiment of first aspect, step 1. described in aliphatic anhydride be with one kind of lower structure：
In a kind of embodiment of first aspect, step 2. described in certain temperature be：270℃.
In a kind of embodiment of first aspect, the substrate includes glass plate.
In second aspect, it is thin that the application provides a kind of clear polyimides prepared by the method by described in first aspect
Film.
Compared with prior art, the present invention gained transparent polyimide film, thickness range at 50 μm or so,
500nm ultraviolet permeabilities are up to 90%, 400nm ultraviolet permeabilities and reach 75% or more, and ultraviolet cut-on wavelength reaches 312nm, lose
5% temperature is weighed at 430 DEG C or more, and excellent in mechanical performance.
Description of the drawings
Fig. 1 is that embodiment prepares the transparent polyamide acid solution of different copolymer acid anhydrides and its corresponding transparent polyimide film
Optical photograph figure, wherein being yellow using transparent polyimide film prepared by PMDA；
Fig. 2 is the transparent polyimide film infrared spectrum for the aliphatic anhydride that embodiment prepares different molar fractions；
Fig. 3 is the transparent polyimide film ultraviolet-visible spectrogram that embodiment prepares different copolymer acid anhydrides；
Fig. 4 is the transparent polyimide film UV, visible light that embodiment prepares the aliphatic anhydride with different molar fractions
Spectrogram；
Fig. 5 is the transparent polyimide film thermogravimetric curve for the aliphatic anhydride that embodiment prepares different molar fractions
Figure.
Number and embodiment correspondence in attached drawing is as follows：PI-6FDA-50 indicates that copolymerization acid anhydrides is 6FDA, aliphatic
Acid anhydrides is 50%, is embodiment 1；PI-PMDA-50 indicates that copolymerization acid anhydrides is PMDA, and aliphatic anhydride 50% is embodiment 3；
PI-BTDA-50 indicates that copolymerization acid anhydrides is BTDA, and aliphatic anhydride 50% is embodiment 4；PI-BPDA-50 indicates co-polymeric acids
Acid anhydride is BPDA, and aliphatic anhydride mass fraction is 50%, is embodiment 5；PI-ODPA-50 indicates that copolymerization acid anhydrides is ODPA, fat
Race's acid anhydrides mass fraction is 50%, is embodiment 6；PI-6FDA-70 indicates that copolymerization acid anhydrides is 6FDA, aliphatic anhydride quality point
Number is 70%, is embodiment 7；PI-6FDA-90 indicates that copolymerization acid anhydrides is 6FDA, and aliphatic anhydride mass fraction is 90%, is real
Apply example 8；PI-6FDA-100 indicates that copolymerization acid anhydrides is 6FDA, and aliphatic anhydride mass fraction is 100%, is embodiment 9；PI-
6FDA-30 indicates that copolymerization acid anhydrides is 6FDA, and aliphatic anhydride mass fraction is 30%, is embodiment 10；PI-6FDA-10 is indicated
Copolymerization acid anhydrides is 6FDA, and aliphatic anhydride mass fraction is 10%, is embodiment 11；PI-6FDA-0 indicates that copolymerization acid anhydrides is
6FDA, aliphatic anhydride mass fraction are 0%, are embodiment 12.
Specific implementation mode
Embodiment 1
The preparation of transparent polyimide film is accomplished by the following way in this example：
One, bis- (the trifluoromethyl) -4,4'- diamino-phenyl ethers of 21.62g fluorinated diamines 2,2'- are added to nitrogen or lazy
Property gas shield 238.83g polar non-solutes (n,N-dimethylacetamide) in, at 10-30 DEG C, stirring keep its complete
After fully dissolved, the molar ratio for controlling diamines and acid anhydrides is 1：Copolymerization acid anhydrides 4,4- hexafluoro isopropyl O-phthalics is added in 1-1.02
The cyclobutanetetracarboxylic dianhydride that acid anhydrides and aliphatic anhydride molar fraction are 50%, reacts 24 hours, obtains transparent polyamide
Acid solution.Herein, aliphatic anhydride molar fraction refers to aliphatic molal quantity polyanhydride molal quantity and aliphatic anhydride together
The ratio of the sum of molal quantity.
Two, the polyamic acid solution even application for obtaining step 1 is subsequently placed in vacuum baking on clean glass plate
Progress temperature programming removes solvents to 270 DEG C and carries out hot imidization and taken after vacuum drying oven temperature is down to environment temperature in case
Go out glass plate, demoulds, it is dry, obtain transparent polyimide film.
Embodiment 2
Fluorinated diamine described in step 1 is 2,2'- bis trifluoromethyl -4,4'- benzidines.Other and embodiment 1
It is identical, its role is to：Transparent polyimide film reduction of pliability, mechanical property is more preferably.
Embodiment 3
Copolymerization acid anhydrides described in step 1 is 1,2,4,5- pyromellitic acid anhydrides.It is other same as Example 1, make
With being：It is different to be copolymerized acid anhydrides, transparent polyimide film transparency is different.
Embodiment 4
Copolymerization acid anhydrides described in step 1 is 3,3 ', 4,4 '-benzophenone tetracid dianhydrides.It is other same as Example 1,
Effect is：It is different to be copolymerized acid anhydrides, transparent polyimide film transparency is different.
Embodiment 5
Copolymerization acid anhydrides described in step 1 is 3,3,4,4- biphenyl dianhydrides.It is other same as Example 1, it acts on
In：It is different to be copolymerized acid anhydrides, transparent polyimide film transparency is different.
Embodiment 6
Copolymerization acid anhydrides described in step 1 is 4,4 '-biphenyl ether dianhydrides.It is other same as Example 1, its role is to：
It is different to be copolymerized acid anhydrides, transparent polyimide film transparency is different.
Embodiment 7
Aliphatic anhydride molar fraction described in step 1 is 70%.It is other same as Example 1, its role is to：
Aliphatic anhydride molar fraction increases, and transparent polyimide film transparency improves.
Embodiment 8
Aliphatic anhydride molar fraction described in step 1 is 90%.It is other same as Example 1, its role is to：
Aliphatic anhydride molar fraction increases, and transparent polyimide film transparency improves.
Embodiment 9
Aliphatic anhydride molar fraction described in step 1 is 100%.It is other same as Example 1, its role is to：
Aliphatic anhydride molar fraction increases, and transparent polyimide film transparency improves.
Embodiment 10
Aliphatic anhydride molar fraction described in step 1 is 30%.It is other identical as specific real mode, it acts on
In：Aliphatic anhydride molar fraction is reduced, and transparent polyimide film transparency reduces.
Embodiment 11
Aliphatic anhydride molar fraction described in step 1 is 10%.It is other same as Example 1, its role is to：
Aliphatic anhydride molar fraction is reduced, and transparent polyimide film transparency reduces.
Embodiment 12
Aliphatic anhydride molar fraction described in step 1 is 0%.It is other same as Example 1, its role is to：Fat
Fat race acid anhydrides molar fraction is reduced, and transparent polyimide film transparency reduces.
Embodiment 13
Aliphatic anhydride described in step 1 is：
It is other same as Example 1, its role is to：Aliphatic anhydride is that dimethyl replaces cyclobutanetetracarboxylic dianhydride,
Transparent polyimide film transparency reduces.
Comparative example 14
Temperature programming described in step 1 is to 300 DEG C.It is other same as Example 1, its role is to：Imidization temperature
It increases, transparent polyimide film transparency reduces.
Prepared by this experiment, with different copolymer acid anhydrides transparent polyamide acid solution and transparent polyimide film are made
Optical photograph.Polyamic acid solution with different copolymer acid anhydrides almost, when the transparent polyimide film of different copolymer acid anhydrides
Copolymerization acid anhydrides be 3,3,4,4- biphenyl dianhydrides and 4, when 4- hexafluoro isopropyl phthalic anhydrides, the optical photograph of film is shown
Its is nearly transparent, and the Kapton of other copolymerization acid anhydrides is light yellow.
The transparent polyimide film of prepared by this experiment, with different molar fractions aliphatic anhydrides makees infrared light
Spectrum test.As shown in Fig. 2, 1781,1713cm-1It is imide ring C=O stretching vibration peaks, 1373cm-1It is that imide ring C-N is flexible to shake
Dynamic peak, 1248cm-1It is C-O stretching vibration peaks, this shows that polyimides is successfully prepared.
Prepared by this experiment, transparent polyimide film with different copolymer acid anhydrides is made ultraviolet-visible spectrogram and is surveyed
Examination.As shown in figure 3, as copolymerization acid anhydrides is different, the transparent polyimide film transparency is different；When aliphatic anhydride content is
When 50%, PI-PMDA-50 is followed successively by 400nm ultraviolet transmissions<PI-BTDA-50<PI-BPDA-50<PI-ODPA-50<
PI-6FDA-50。
Prepared by this experiment, aliphatic anhydrides with different molar fractions transparent polyimide films make it is ultraviolet can
See spectrum test.As shown in figure 4, with the continuous improvement of molar fraction, the transparent polyimide film transparency is continuously improved, purple
Outer cutoff wavelength is up to 310nm, and 400nm ultraviolet transmissions reach 75% or more, 500nm ultraviolet permeabilities and are up to 90%, transparent
It has excellent performance.
The present embodiment transparent polyimide film is made into thermogravimetic analysis (TGA) test.As shown in figure 5, in nitrogen atmosphere, 5%
Weightless temperature is at 433-522 DEG C, and 10% weightless temperature is at 460-547 DEG C, and 800 DEG C of Residual carbon is up to 45-50%, and hot property is excellent
It is different.
The above-mentioned description to embodiment is that this Shen can be understood and applied for the ease of those skilled in the art
Please.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiments without paying performing creative labour.Therefore, the application is not limited to implementation here
Example, those skilled in the art make according to herein disclosed content in the case where not departing from the application scope and spirit
It improves and changes within all scope of the present application.
Claims (8)
1. a kind of preparation method of transparent polyimide film, it is characterised in that have steps of：
1. fluorinated diamine is added in nitrogen or the polar non-solute of other inert gas shieldings, at 10-50 DEG C, stir
It mixes after making it completely dissolved, the aliphatic anhydride of copolymerization acid anhydrides and certain molar fraction is added, control mole of diamines and acid anhydrides
Than being 1：1-1.02 reacts 6-24 hours, obtains transparent polyamic acid solution；
2. 1. polyamic acid solution that step is obtained on clean substrate, is subsequently placed in vacuum with predetermined thickness even application
Temperature programming to certain temperature is carried out in baking oven to remove solvent and carry out hot imidization, waits for that vacuum drying oven temperature is down to environment temperature
Afterwards, substrate is taken out, is demoulded, it is dry, obtain transparent polyimide film.
2. the preparation method of transparent polyimide film according to claim 1, it is characterised in that：Step 1. described in
Fluorinated diamine is：2,2'- bis- (trifluoromethyl) -4,4'- diamino-phenyl ethers, 2,2'- bis- (trifluoromethyl) -4,4'- diamino
One or more of biphenyl.
3. the preparation method of transparent polyimide film according to claim 1, it is characterised in that：Step 1. described in
Being copolymerized acid anhydrides is：1,2,4,5- pyromellitic acid anhydrides, 3,3 ', 4,4 '-benzophenone tetracid dianhydrides, 4,4 '-biphenyl ether dianhydrides, 3,
3,4,4- biphenyl dianhydrides, one or more of 4,4- hexafluoro isopropyl phthalic anhydrides.
4. the preparation method of transparent polyimide film according to claim 1, it is characterised in that：Step 1. described in
Certain molar fraction is 0%-100%.
5. the preparation method of transparent polyimide film according to claim 1, it is characterised in that：Step 1. described in
Aliphatic anhydride is with one kind of lower structure：
6. the preparation method of transparent polyimide film according to claim 1, it is characterised in that：Step 2. described in
Certain temperature is：270℃.
7. the preparation method of transparent polyimide film according to claim 1, which is characterized in that the substrate includes
Glass plate.
8. prepared by a kind of preparation method by the transparent polyimide film as described in any one of claim 1-7
Transparent polyimide film.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110951077A (en) * | 2019-11-14 | 2020-04-03 | 安徽国风塑业股份有限公司 | Transparent polyimide precursor and preparation method thereof |
| CN112062988A (en) * | 2020-08-06 | 2020-12-11 | 深圳丹邦科技股份有限公司 | White polyimide optical film and preparation method thereof |
| CN112062960A (en) * | 2020-09-10 | 2020-12-11 | 武汉华星光电半导体显示技术有限公司 | Polyimide, polyimide film, preparation method of polyimide film and display device |
| CN112500803A (en) * | 2020-04-21 | 2021-03-16 | 中天电子材料有限公司 | Polyimide adhesive film and preparation method and application thereof |
| CN112831182A (en) * | 2020-12-31 | 2021-05-25 | 宁波长阳科技股份有限公司 | Colorless transparent polyimide film, preparation method thereof and LED (light-emitting diode) film pasting screen |
| CN113260658A (en) * | 2018-12-28 | 2021-08-13 | 株式会社斗山 | Polyamic acid composition and transparent polyimide film using same |
| CN114573811A (en) * | 2021-12-29 | 2022-06-03 | 宁波博雅聚力新材料科技有限公司 | Imide slurry, synthesis method thereof and composition containing imide slurry |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113260658A (en) * | 2018-12-28 | 2021-08-13 | 株式会社斗山 | Polyamic acid composition and transparent polyimide film using same |
| CN110951077A (en) * | 2019-11-14 | 2020-04-03 | 安徽国风塑业股份有限公司 | Transparent polyimide precursor and preparation method thereof |
| CN112500803A (en) * | 2020-04-21 | 2021-03-16 | 中天电子材料有限公司 | Polyimide adhesive film and preparation method and application thereof |
| CN112062988A (en) * | 2020-08-06 | 2020-12-11 | 深圳丹邦科技股份有限公司 | White polyimide optical film and preparation method thereof |
| CN112062960A (en) * | 2020-09-10 | 2020-12-11 | 武汉华星光电半导体显示技术有限公司 | Polyimide, polyimide film, preparation method of polyimide film and display device |
| CN112831182A (en) * | 2020-12-31 | 2021-05-25 | 宁波长阳科技股份有限公司 | Colorless transparent polyimide film, preparation method thereof and LED (light-emitting diode) film pasting screen |
| CN114573811A (en) * | 2021-12-29 | 2022-06-03 | 宁波博雅聚力新材料科技有限公司 | Imide slurry, synthesis method thereof and composition containing imide slurry |
| CN114573811B (en) * | 2021-12-29 | 2023-12-22 | 宁波博雅聚力新材料科技有限公司 | Imide slurry, synthesis method thereof and composition containing imide slurry |
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