CN104356569B - A kind of polyvinyl alcohol film and preparation method thereof and a kind of polaroid - Google Patents
A kind of polyvinyl alcohol film and preparation method thereof and a kind of polaroid Download PDFInfo
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Abstract
The invention provides a kind of polyvinyl alcohol film, polyvinyl alcohol resin, composite elasticizer and surfactant are prepared from, described composite elasticizer includes many alcohol compounds and cyclodextrin.The present invention is using cyclodextrin and many alcohol compounds as composite elasticizer, wherein, cyclodextrin forms clathration with many alcohol compounds, effectively inhibit the migration in PVA film of the little molecule plasticizer, decrease the loss of plasticizer, further, the interaction of polyvinyl alcohol resin, composite elasticizer and surfactant also add tensile property and the optical property of polyvinyl alcohol film.It addition, in the dyeing course of polyvinyl alcohol film, cyclodextrin and KI3There is Inclusion property, add KI3Stability, improve the Color of PVA film.Result shows, residual volume >=80% of the plasticizer of the polaroid prepared by the present invention, hot strength >=70MPa, light transmission rate >=42.6%, degree of polarization >=99.1%.
Description
Technical field
The invention belongs to technical field of liquid crystal display, be specifically related to a kind of polyvinyl alcohol film and preparation side thereof
Method and a kind of polaroid.
Background technology
Polaroid is one of important component part of liquid crystal display, it is common that by polyvinyl alcohol masking stock solution
Casting film-forming, simple tension or the stretching of Edge Coloring limit after dyeing, then process with boron compound is fixing,
Or process with boron compound is fixing when dyeing stretching, manufacture polarizing film, then paste at this film surface
Close three cellulose acetate membrane as protecting film.
In above-mentioned preparation process, for improving the extensibility of polyvinyl alcohol film, preferably in masking stock solution
Adding plasticizer, the plasticizer that PVA film is conventional has glycols, many alcohols, amine etc., can individually or mix
Close and use, wherein, be most commonly used that glycerol, but, the plasticizer in film in use can move
Shifting is oozed out, and causes thin film to soften, tacky, and the PVA film losing plasticizer shrinks, hardening, simultaneously
The plasticizer migrated, in follow-up stretching, dyeing course, is dissolved in the tank liquor of aqueous solution, causes PVA
Plasticizer loading in film reduces, and causes Film Optics performance, extensibility to decline.
In order to solve the problems referred to above, people have studied different methods.Such as: Publication No. CN1168901A
Patent documentation disclose a kind of method reducing the migration of plasticizer, will alkylene oxide and 3-6 hydroxyl many
The compound of unit's alcohol additive reaction and PVA mixed incompatible polyvinyl alcohol film of preparing, but used by this invention
Oxirane belong to toxic gas, and need to complete in acid condition additive reaction, the raw material of residual
Also follow-up masking can be affected.Open a kind of use of knowing clearly of the patent documentation of Publication No. CN101619138A
First surface activating agent, second surface activating agent reduce casting surface and plasticising oxidant layer, plasticising oxidant layer with
The surface tension of polyvinyl alcohol film, thus the method improving thin film stripping performance, but said method fails
Solve migration of plasticizer problem.The patent documentation of Application No. 201010161120.1 proposes a kind of by little molecule
The plasticizer compounded by a certain percentage with polymeric plasticizer is to solve asking of polyvinyl alcohol film melt-processed
Topic, but fail to improve migration of plasticizer.The patent documentation of Application No. 200910141337.3 discloses one
Plant the compositions of polyhydric polyhedral oligomeric silsesquioxane (POSS) and polyvinyl alcohol, this POSS
Compound is dissolved in polar solvent, but water insoluble, and industrialized production solvent usage amount is big, cost recovery
High.The patent documentation of Application No. 201210439314.2 discloses a kind of polyvinyl alcohol blend, comprises poly-
Vinyl alcohol and poly-(methyl) acrylate with hydrophilic alcoholic extract hydroxyl group, the most poly-(methyl) acrylic acid
Ester is as plasticizer, but the PVA film tensile property prepared of the method and optical property are poor, uncomfortable
In polaroid.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of polyvinyl alcohol film, this
The plasticizer exudation amount of bright provided polyvinyl alcohol film is low, has preferable tensile property, and preparation
Polaroid excellent in optical properties.
The invention provides a kind of polyvinyl alcohol film, by polyvinyl alcohol resin, composite elasticizer and surface
Activating agent is prepared from, and described composite elasticizer includes many alcohol compounds and cyclodextrin.
Preferably, the mass ratio of described polyvinyl alcohol resin, composite elasticizer and surfactant is 100:
(1～30): (0.01～3).
Preferably, the mass ratio of described many alcohol compounds and cyclodextrin is (5～40): 1.
Preferably, described many alcohol compounds are ethylene glycol, glycerol, propylene glycol, diethylene glycol, three sweet
One or more in alcohol, tetraethylene glycol (TEG) and trimethylolpropane.
Preferably, described cyclodextrin is alpha-cyclodextrin, beta-schardinger dextrin-or gamma-cyclodextrin.
Preferably, described surfactant is anion surfactant or nonionic surfactant.
Present invention also offers the preparation method of a kind of polyvinyl alcohol film, comprise the following steps:
Polyvinyl alcohol resin, composite elasticizer, surfactant and solvent are mixed, heated and stirred,
To polyvinyl alcohol masking stock solution, described polyvinyl alcohol masking stock solution masking is obtained polyvinyl alcohol film.
Preferably, the volatile matter content of described polyvinyl alcohol masking stock solution is 50%～95%.
Preferably, described solvent is dimethyl sulfoxide, dimethylformamide, dimethyl acetylamide, second two
One or more in alcohol, propylene glycol, trimethylolpropane, G & W.
Present invention also offers a kind of by polyvinyl alcohol film of the present invention or by provided by the present invention
Polaroid prepared by the polyvinyl alcohol film that preparation method prepares.
Compared with prior art, the invention provides a kind of polyvinyl alcohol film, by polyvinyl alcohol resin,
Composite elasticizer and surfactant are prepared from, and described composite elasticizer includes many alcohol compounds and ring
Dextrin.The present invention is using cyclodextrin and many alcohol compounds as composite elasticizer, and wherein, cyclodextrin is with many
Alcohol compound forms clathration, effectively inhibits the migration in PVA film of the little molecule plasticizer,
Decrease the loss of plasticizer, and, the phase of polyvinyl alcohol resin, composite elasticizer and surfactant
Interaction also add tensile property and the optical property of polyvinyl alcohol film.It addition, at polyvinyl alcohol
In the dyeing course of thin film, cyclodextrin and KI3There is Inclusion property, add KI3Stability, improve
The Color of PVA film.
Result shows, residual volume >=80% of the plasticizer of the polaroid prepared by the present invention, hot strength >=
70MPa, light transmission rate >=42.6%, degree of polarization >=99.1%.
Detailed description of the invention
The invention provides a kind of polyvinyl alcohol film, by polyvinyl alcohol resin, composite elasticizer and surface
Activating agent is prepared from, and described composite elasticizer includes many alcohol compounds and cyclodextrin.
The present invention prepares polyvinyl alcohol with polyvinyl alcohol resin, composite elasticizer and surfactant for raw material
Thin film.Wherein, the mass ratio of described polyvinyl alcohol resin, composite elasticizer and surfactant is 100:
(1～30): (0.01～3), preferably 100:(10～25): (0.1～1).
The polyvinyl alcohol degree of polymerization preferably 1500～6000 of the present invention, preferably 99 moles % of saponification degree with
On, more preferably 99.5 moles more than %.The present invention does not has special limit to the source of described polyvinyl alcohol resin
System, the most commercially available.Plasticizer used by the present invention is composite elasticizer, described composite elasticizer bag
Including many alcohol compounds and cyclodextrin, wherein, the mass ratio of described many alcohol compounds and cyclodextrin is
(5～40): 1, are preferably (10～30): 1.If many alcohol compounds are too small with the ratio of cyclodextrin content,
Composite elasticizer reduces with the intermiscibility of PVA, and plasticizing effect weakens, and PVA film hot strength reduces；
If many alcohol compounds are excessive with the ratio of cyclodextrin content, then the problem being susceptible to the migration of plasticizer.Institute
Stating many alcohol compounds is ethylene glycol, glycerol, propylene glycol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol)., tetraethylene glycol (TEG) and three
One or more in hydroxymethyl-propane, preferably diethylene glycol, ethylene glycol or glycerol.Described cyclodextrin is
Alpha-cyclodextrin, beta-schardinger dextrin-or gamma-cyclodextrin, preferably gamma-cyclodextrin.
The kind of described surfactant is not particularly limited by the present invention, preferred anionic surfactant
Or nonionic surfactant；Described anion surfactant preferred sulfonic acid type anion surfactant,
Sulfuric ester salt form surfactant or amido sulfuric acid salt form anion surfactant；More there is choosing, described
Sulfonic acid type anion surfactant is dodecylbenzene sodium sulfonate or myristyl sodium sulfonate, described sulphuric acid
Ester salt form surfactant is sodium octyl sulfate or sodium lauryl sulphate, described amido sulfuric acid salt form cloudy from
Sub-surface activating agent is Palmic acid amide sodium sulfate or stearic ethanolamide sodium sulfate；Described non-from
Sub-surface activating agent is polyoxyethylene lauryl ether, polyoxyethylene lauryl base phenyl ether and lauric acid list
One or both in glycollic amide.
The thickness of polyvinyl alcohol film provided by the present invention is 40～90 μm, preferably 50～80 μm.
Present invention also offers the preparation method of a kind of polyvinyl alcohol film, comprise the following steps:
Polyvinyl alcohol resin, composite elasticizer, surfactant and solvent are mixed, heated and stirred,
To polyvinyl alcohol masking stock solution, described polyvinyl alcohol masking stock solution masking is obtained polyvinyl alcohol film.
First polyvinyl alcohol resin, composite elasticizer, surfactant and solvent are mixed by the present invention,
To mixture.
The polyvinyl alcohol degree of polymerization preferably 1500～6000 of the present invention, preferably 99 moles % of saponification degree with
On, more preferably 99.5 moles more than %.The present invention does not has special limit to the source of described polyvinyl alcohol resin
System, the most commercially available.Plasticizer used by the present invention is composite elasticizer, described composite elasticizer bag
Including many alcohol compounds and cyclodextrin, wherein, the mass ratio of described many alcohol compounds and cyclodextrin is
(5～40): 1, are preferably (10～30): 1.Described many alcohol compounds be ethylene glycol, glycerol, third
One or more in glycol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol)., tetraethylene glycol (TEG) and trimethylolpropane, preferably two
Glycol, ethylene glycol or glycerol.Described cyclodextrin is alpha-cyclodextrin, beta-schardinger dextrin-or gamma-cyclodextrin, excellent
Elect gamma-cyclodextrin as.
The kind of described surfactant is not particularly limited by the present invention, preferred anionic surfactant
Or nonionic surfactant；Described anion surfactant preferred sulfonic acid type anion surfactant,
Sulfuric ester salt form surfactant or amido sulfuric acid salt form anion surfactant；More there is choosing, described
Sulfonic acid type anion surfactant is dodecylbenzene sodium sulfonate or myristyl sodium sulfonate, described sulphuric acid
Ester salt form surfactant is sodium octyl sulfate or sodium lauryl sulphate, described amido sulfuric acid salt form cloudy from
Sub-surface activating agent is Palmic acid amide sodium sulfate or stearic ethanolamide sodium sulfate；Described non-from
Sub-surface activating agent is polyoxyethylene lauryl ether, polyoxyethylene lauryl base phenyl ether and lauric acid list
One or both in glycollic amide.
Described solvent be dimethyl sulfoxide, dimethylformamide, dimethyl acetylamide, ethylene glycol, the third two
One or more in alcohol, trimethylolpropane, G & W, preferably water.
After obtaining mixture, by described mixture heated and stirred, obtain polyvinyl alcohol masking stock solution.Described
The volatile matter content of polyvinyl alcohol masking stock solution is 50%～95%, preferably 70%～95%.
Described polyvinyl alcohol masking stock solution masking is obtained polyvinyl alcohol film.The present invention is to described masking
Method is not particularly limited, it is preferred to use casting film, film by wet, melt extrude or casting film
Method prepares polyvinyl alcohol film.The thickness of the polyvinyl alcohol film prepared is 40～90 μm, preferably
It is 50～80 μm.
Present invention also offers a kind of polyethylene prepared by above-mentioned polyvinyl alcohol film or said method
The polaroid of alcohol film preparation.When being manufactured polaroid by polyvinyl alcohol film provided by the present invention, including
PVA film is dyeed, uniaxial extension, fixing process, the step of dried, and regard it and need
The most thermally processable, above steps order is not particularly limited by the present invention, for example, it is possible to simultaneously
Implement dyeing and uniaxial extension, it is also possible to dyeing, uniaxial tension and fixing process are carried out simultaneously.
Wherein, the dyestuff that described dyeing uses is preferably iodine liquid.The present invention does not has special limit to described extension
System, preferably according to mode known in the art, as used wet tensile method or dry stretch process；Described extension
Multiplying power preferably more than 4 times, more preferably more than 5 times, further preferred more than 6 times.Described extension
Temperature preferably 20～80 DEG C, more preferably 30～70 DEG C, more preferably 40～60 DEG C.Poly-second after extension
Enol film thickness is preferably 5～30 μm, preferably 10～25 μm.Described PVA film is fixed
Process, the treatment fluid of described treatment fluid preferred boronic acid containing compound.The PVA film of fixing process is done
Dry, dried is preferably 40～150 DEG C, more preferably 60～150 DEG C.
Protecting film good to dried polyvinyl alcohol film laminating optical clear and mechanical strength is obtained polarisation
Sheet.Wherein, described protecting film can be fitted in the one side of polyethylene film, it is also possible to is fitted in polyethylene
Thin film two sides.Described protecting film is three cellulose acetate membrane, polyethylene terephthalate film, poly-methyl
Acrylic acid methyl ester. film, polystyrene or polyester mesentery, preferably three cellulose acetate membrane.
The present invention is using cyclodextrin and many alcohol compounds as composite elasticizer, wherein, and cyclodextrin and polyol
Compounds forms clathration, effectively inhibits the migration in PVA film of the little molecule plasticizer, subtracts
Lack the loss of plasticizer, and, polyvinyl alcohol resin, composite elasticizer and surfactant mutual
Effect also add tensile property and the optical property of polyvinyl alcohol film.It addition, it is thin at polyvinyl alcohol
In the dyeing course of film, cyclodextrin and KI3There is Inclusion property, add KI3Stability, improve
The Color of PVA film.
Result shows, residual volume >=80% of the plasticizer of the polaroid prepared by the present invention, hot strength >=
70MPa, light transmission rate >=42.6%, degree of polarization >=99.1%.
In order to be further appreciated by the present invention, a kind of polyvinyl alcohol present invention provided below in conjunction with embodiment
Thin film and preparation method thereof and a kind of polaroid illustrate, and protection scope of the present invention is not by following reality
Execute the restriction of example.
Embodiment 1
By the polyvinyl alcohol of 30 parts (degree of polymerization 2600, saponification degree 99.7%), the composite elasticizer of 3 parts,
The dodecyl sodium sulfate of 0.1 part is configured to the PVA aqueous solution that volatile matter content is 85 mass %, wherein
Composite elasticizer is the mixture of glycerol and cyclodextrin, and described glycerol with the mass ratio of cyclodextrin is
10:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining thickness by the tape casting
Degree is the PVA film of 74 μm.
Prepared PVA film is immersed in 30 DEG C of pure water and infiltrate 1min, containing I20.5g/L、KI 20g/L
The dye bath of 30 DEG C in contaminate 200s, uniaxial extension is to 5 times of former length simultaneously, at fixing groove (boric acid
Potassium 40g/L) and complementary color groove (KI 30g/L) in, continue to extend to 5.5 times of former length, in 80 DEG C be dried
4min, use 5wt% polyvinyl alcohol water solution is as binding agent, in upper three acetic acid of PVA film both sides laminating
Cellulose membrane (LOF06306-1556, thick 80 μm), 50 DEG C are dried to obtain polaroid.
Embodiment 2
The compound increasing of 12 parts is added at the polyvinyl alcohol of 100 parts (degree of polymerization 2400, saponification degree 99.5%)
Mould agent, the dodecyl sodium sulfate of 0.5 part is configured to the PVA aqueous solution that volatile matter content is 80 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 15:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining by the tape casting
To the PVA film that thickness is 75 μm.
The method identical according to embodiment 1 prepares polaroid.
Embodiment 3
The compound increasing of 10 parts is added at the polyvinyl alcohol of 100 parts (degree of polymerization 2600, saponification degree 99.7%)
Mould agent, the dodecyl sodium sulfate of 3 parts is configured to the PVA aqueous solution that volatile matter content is 70 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 40:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining by the tape casting
To the PVA film that thickness is 74 μm.
The method identical according to embodiment 1 prepares polaroid.
Embodiment 4
The compound increasing of 20 parts is added at the polyvinyl alcohol of 100 parts (degree of polymerization 3500, saponification degree 99.5%)
Mould agent, the dodecyl sodium sulfate of 2 parts is configured to the PVA aqueous solution that volatile matter content is 90 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 25:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining by the tape casting
To the PVA film that thickness is 75 μm.
The method identical according to embodiment 1 prepares polaroid.
Embodiment 5
The compound increasing of 30 parts is added at the polyvinyl alcohol of 100 parts (degree of polymerization 4500, saponification degree 99.7%)
Mould agent, the dodecyl sodium sulfate of 1.5 parts is configured to the PVA aqueous solution that volatile matter content is 95 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 5:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining by the tape casting
Thickness is the PVA film of 74 μm.
The method identical according to embodiment 1 prepares polaroid.
Embodiment 6
The compound increasing of 15 parts is added at the polyvinyl alcohol of 100 parts (degree of polymerization 1500, saponification degree 99.5%)
Mould agent, the dodecyl sodium sulfate of 0.01 part is configured to the PVA aqueous solution that volatile matter content is 50 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 30:1, heated and stirred at 90 DEG C, until being completely dissolved, standing 24h de-bubble, obtaining by the tape casting
To the PVA film that thickness is 74 μm.
The method identical according to embodiment 1 prepares polaroid.
Comparative example 1
Add the third the three of 12 parts in the polyvinyl alcohol of 100 parts (degree of polymerization 2400, saponification degree 99.5%)
Alcohol, the dodecyl sodium sulfate of 0.5 part are configured to the PVA aqueous solution that volatile matter content is 80 mass %,
Heated and stirred at 90 DEG C, until being completely dissolved, stands de-bubble, and obtaining thickness by the tape casting is 76 μm
PVA film.
The method identical according to embodiment 1 prepares polaroid.
Comparative example 2
In the polyvinyl alcohol of 100 parts (degree of polymerization 3500, saponification degree 99.5%), interpolation 20 parts is compound
Plasticizer, the dodecyl sodium sulfate of 2 parts are configured to the PVA aqueous solution that volatile matter content is 90 mass %,
Wherein composite elasticizer is the mixture of glycerol and cyclodextrin, the quality of described glycerol and cyclodextrin it
Ratio is 3:1, heated and stirred at 90 DEG C, until being completely dissolved, standing de-bubble, obtaining thickness by the tape casting
It it is the PVA film of 76 μm.
The method identical according to embodiment 1 prepares polaroid.
Comparative example 3
Add the third the three of 10 parts in the polyvinyl alcohol of 100 parts (degree of polymerization 1700, saponification degree 99.7%)
Alcohol, the dodecyl sodium sulfate of 3 parts are configured to the PVA aqueous solution that volatile matter content is 30 mass %, its
Middle composite elasticizer is the mixture of glycerol and cyclodextrin, described glycerol and the mass ratio of cyclodextrin
For 50:1, heated and stirred at 90 DEG C, until being completely dissolved, standing de-bubble, obtaining thickness by the tape casting
It it is the PVA film of 75 μm.
The method identical according to embodiment 1 prepares polaroid.
By embodiment 1～6 and comparative example 1～3 evaluate the residual volume of plasticizer, PVA film as follows
Hot strength and the transmitance of polaroid, degree of polarization, result is shown in table 1.
(1) residual volume of plasticizer
Measure the residual volume after stretching, dyeing of the plasticizer in PVA film, after stretching, dyeing
The value that plasticizer loading obtains divided by the plasticizer loading in PVA film before stretching, dyeing represents plasticizer
Participation ratio, concrete assay method is:
Cut the sample of 1cm*2cm from the central part of PVA film, put into DMSO-d6It is made into 5 matter
The solution of amount %, is warmed up to 90 DEG C and extremely dissolves completely, use 500MHz,1H-NMR in pulse daley
Time 20s, measures at temperature 30 DEG C, the NMR spectra of gained measure containing of plasticizer in each sample
Amount.By the crest of 2 hydrogen partials of glycerol methylene (integrated intensity of crest is Sg) near 3.3ppm,
The crest of 2 hydrogen partials of methylene of PVA is (integrated intensity of crest is Sp) inspection near 1.5ppm
Measure, utilize its integrated intensity and calculate the content R (quality %) of glycerol in PVA according to Formulas I.
R=(92/94) × (Sg × Sp) × 100 Formulas I
(2) hot strength
Regulation with reference to GB/T12683-2009 is measured.
(3) transmitance
In the middle position of the width of light polarizing film, cut the light polarizing film sample of about 4cm*4cm, with dividing
Light photometer (Japan's Shimadzu UV-2200 type, attached integrating sphere), according to JIS Z870 benchmark, carries out C
Light source, 2 ° of visuals field visible region visibility correction, by 45 ° of the outrigger shaft direction of relative light polarizing film
Transmitance (Y) is obtained with the meansigma methods in-45 ° of directions.
(4) degree of polarization
Use above-mentioned spectrophotometric determination: first measure 2 identical Polarizers with the parallel side of polarizing axis
Transmitance during formula overlap, the most parallel transmitance Y∥, transmitance overlapping in the way of polarizing axis is orthogonal,
The most orthogonal transmitance Y⊥, obtain degree of polarization V according to Formula II.
V={ (Y∥-Y⊥)/(Y∥+Y⊥) 1/2*100 Formula II
Table 1 test result
As can be seen from Table 1, residual volume >=80% of the plasticizer of the polaroid prepared by the present invention, stretching
Intensity >=70MPa, light transmission rate >=42.6%, degree of polarization >=99.1%.Polyethylene provided by the present invention
The plasticizer exudation amount of alcohol thin film is low, has preferable tensile property, and the polaroid optical property of preparation
Excellent.
The above is only the preferred embodiment of the present invention, it is noted that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a polyvinyl alcohol film, it is characterised in that by polyvinyl alcohol resin, compound plasticising
Agent and surfactant are prepared from, and described composite elasticizer includes that many alcohol compounds and ring are stuck with paste
Essence；Described many alcohol compounds be ethylene glycol, glycerol, propylene glycol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol).,
One or more in tetraethylene glycol (TEG) and trimethylolpropane；Described many alcohol compounds and cyclodextrin
Mass ratio be (5～40): 1.
Polyvinyl alcohol film the most according to claim 1, it is characterised in that described poly-second
The mass ratio of enol resin, composite elasticizer and surfactant is 100:(1～30):
(0.01～3).
Polyvinyl alcohol film the most according to claim 1, it is characterised in that described ring is stuck with paste
Essence is alpha-cyclodextrin, beta-schardinger dextrin-or gamma-cyclodextrin.
Polyvinyl alcohol film the most according to claim 1, it is characterised in that described surface
Activating agent is anion surfactant or nonionic surfactant.
5. the preparation method of a polyvinyl alcohol film, it is characterised in that comprise the following steps:
Polyvinyl alcohol resin, composite elasticizer, surfactant and solvent being mixed, heating is stirred
Mix, obtain polyvinyl alcohol masking stock solution, described polyvinyl alcohol masking stock solution masking is obtained poly-second
Enol thin film；
Described composite elasticizer includes many alcohol compounds and cyclodextrin；Described many alcohol compounds
For ethylene glycol, glycerol, propylene glycol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol)., tetraethylene glycol (TEG) and trihydroxy methyl third
One or more in alkane；The mass ratio of described many alcohol compounds and cyclodextrin is (5～40): 1.
Preparation method the most according to claim 5, it is characterised in that described polyvinyl alcohol
The volatile matter content of masking stock solution is 50%～95%.
Preparation method the most according to claim 5, it is characterised in that described solvent is two
Methyl sulfoxide, dimethylformamide, dimethyl acetylamide, ethylene glycol, propylene glycol, three hydroxyl first
One or more in base propane, G & W.
8. one kind by the polyvinyl alcohol film described in Claims 1 to 4 any one or by right
Require polaroid prepared by the polyvinyl alcohol film that 5～7 any one preparation methoies prepare.
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| ES2858559T3 (en) * | 2015-04-15 | 2021-09-30 | Sekisui Chemical Co Ltd | Chemical Packaging Film |
| JP6604752B2 (en) * | 2015-06-22 | 2019-11-13 | 住友化学株式会社 | Manufacturing method of polarizing film |
| JP6636729B2 (en) * | 2015-06-22 | 2020-01-29 | 住友化学株式会社 | Polarizing film, polarizing plate, and method for manufacturing polarizing film |
| JP6893548B2 (en) * | 2015-06-22 | 2021-06-23 | 住友化学株式会社 | Polarizing film, polarizing plate, and method for manufacturing polarizing film |
| JP6257680B2 (en) * | 2016-03-31 | 2018-01-10 | 住友化学株式会社 | Manufacturing method of polarizing film, laminated film |
| CN107167861A (en) * | 2017-05-27 | 2017-09-15 | 中国石油化工集团公司 | Polyethenol series optical film and preparation method thereof |
| CN109181182B (en) * | 2018-08-24 | 2021-05-28 | 中山市新领航塑化科技有限公司 | Environment-friendly migration-resistant polyvinyl alcohol full-biodegradable film |
| CN113646013B (en) * | 2019-03-14 | 2024-02-20 | 华盛顿大学 | Zwitterionic copolymer coatings and related methods |
| CN113527993B (en) * | 2021-07-19 | 2022-07-05 | 丹阳市现代实业有限公司 | High-molecular water-based paint and preparation method thereof |
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