CN108164652A - A kind of polymer dispersed liquid-crystal film material and preparation method - Google Patents
A kind of polymer dispersed liquid-crystal film material and preparation method Download PDFInfo
- Publication number
- CN108164652A CN108164652A CN201611116468.2A CN201611116468A CN108164652A CN 108164652 A CN108164652 A CN 108164652A CN 201611116468 A CN201611116468 A CN 201611116468A CN 108164652 A CN108164652 A CN 108164652A
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- polymerized monomer
- liquid crystal
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- photoinitiator
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- 239000000463 material Substances 0.000 title claims abstract description 27
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 34
- 239000000178 monomer Substances 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 150000002148 esters Chemical class 0.000 claims abstract description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 8
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 7
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims abstract description 6
- VZGFTLXGIRYZMW-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methyl 3-methylbut-2-enoate Chemical compound CC(=CC(=O)OCC1(CCCCC1)CO)C VZGFTLXGIRYZMW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002985 plastic film Substances 0.000 claims abstract description 5
- 229920006255 plastic film Polymers 0.000 claims abstract description 5
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims abstract description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical group CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- NKIDFMYWMSBSRA-UHFFFAOYSA-N [4-(2-methylprop-2-enoyloxymethyl)cyclohexyl]methyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1CCC(COC(=O)C(C)=C)CC1 NKIDFMYWMSBSRA-UHFFFAOYSA-N 0.000 claims 1
- 239000010408 film Substances 0.000 description 26
- 229920000642 polymer Polymers 0.000 description 8
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- -1 cyclohexane dimethanol dimethylacrylate Chemical compound 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K2019/546—Macromolecular compounds creating a polymeric network
Abstract
The present invention relates to a kind of polymer dispersed liquid-crystal film material and preparation methods.The material includes liquid crystal, polymerized monomer and photoinitiator, and the mass ratio of polymerized monomer and liquid crystal is 4:1~1:4, the mass ratio of polymerized monomer and photoinitiator is 1000:1~10:3, polymerized monomer is methacrylic acid β hydroxyl ethyl esters, glycidyl methacrylate, the just own ester of methacrylic acid, the mixture of polyethylene glycol dimethacrylate 1000 and cyclohexanedimethanol dimethylacrylate.Due to the presence of polymerized monomer, the microstructure of polymer dispersed liquid-crystal film material changes, so the driving voltage of polymer dispersed liquid-crystal film material is very low, contrast is higher, the cohesive force between better heat stability, two layers of tin indium oxide plastic film is also very strong, meet public place standards for safe use.
Description
Technical field
The present invention relates to liquid crystal applications technical field, more particularly to a kind of polymer dispersed liquid-crystal film material and preparation side
Method.
Background technology
Polymer dispersed liquid crystals is that nematic droplets are uniformly dispersed in polymeric matrix and are formed compound
Material.Under electric field action, the director of liquid crystal droplet is along electric field orientation, if the long axis refractive index for the liquid crystal selected is with polymerizeing
The index matching of object, light do not occur to reflect and directly transmit, the transparent state of film in film；When not to pdlc film
When applying electric field, since effective refractive index of the light by liquid crystal droplet and the refractive index by polymer are very big, light exists
Liquid crystal and multiple reflections and refraction on polymer interface, film are in strong scattering state.It, can by the control to extra electric field
To realize the switching between scattering states and transparent state.The shortcomings that PDLC thin-film materials overcome many conventional liquid crystals, such as
Do not need to that the distance between polarizer, two substrates does not need to strictly to control, substrate inner surface does not need to orientation process, so as to thin
Type, amount is light, high brightness, wide viewing angle, is easy to many advantages, such as large area.It is widely used in large scale flexible display at present
Part, permselectivity membrane, nonlinear optical material, holographic film, electric-controlled intelligent glass, liquid crystal grating, photoswitch etc..
There are PDLC film products currently on the market, general driving voltage is more than 75V, and voltage is higher, can not meet
The requirement of public place standard safe to use is the bottleneck that it is promoted and applied.In this case, ensure PDLC films with excellent
Under the premise of good contrast and stability, reducing the driving voltage of material is particularly important.The electro-optical properties of PDLC films
Closely related with polymeric network structure, the improvement of PDLC film performances essentially consists in the structure of polymer network, packet
Include the selection of prepolymer monomer, the selection of ultraviolet initiator；In addition, the ratio of prepolymer monomer and liquid crystal and ultraviolet poly-
Temperature, ultraviolet ray intensity, ultraviolet light time, thickness of liquid crystal box etc. are all to influence polymer network microstructure during conjunction
An important factor for.Generally, for the optimization of pdlc film electro-optical properties, the selection of polymerized monomer and mixed ratio, it appears
It is particularly important.We adjust the micro- of polymer network by the design to polymer monomer structure and the selection of polymerizing condition
Structure is seen, is prepared so as to fulfill the optimization of polymer network, prepares the PDLC films of low driving voltage (less than 45V).
Invention content
The purpose of the present invention is in view of the deficienciess of the prior art, offer is a kind of to meet public place standard safe to use
The polymer dispersed liquid-crystal film material and preparation method with low driving voltage.
In order to realize the purpose of foregoing invention, the technical side that a kind of polymer dispersed liquid-crystal film material of the present invention is taken
Case：
A kind of polymer dispersed liquid-crystal film material, the material include liquid crystal, polymerized monomer and photoinitiator, and polymerization is single
The mass ratio of body and liquid crystal is 4:1~1:4, the mass ratio of polymerized monomer and photoinitiator is 1000:1~10:3, polymerized monomer
For 73~120 parts by weight, the polymerized monomer is β-hydroxyethyl methacry-late, glycidyl methacrylate, first
Base the just own ester of acrylic acid, the mixing of polyethylene glycol dimethacrylate 1000 and cyclohexanedimethanol dimethylacrylate
Object, β-hydroxyethyl methacry-late is 15~25 parts by weight in the mixture, and glycidyl methacrylate is 15~25
Parts by weight, the just own ester of methacrylic acid are 8~15 parts by weight, and polyethylene glycol dimethacrylate 1000 is 25~35 weights
It is 10~20 parts by weight to measure number and cyclohexanedimethanol dimethylacrylate.
Compared with prior art, beneficial effects of the present invention：Due to the presence of polymerized monomer, polymer dispersed liquid-crystal film
The microstructure of material changes, so the driving voltage of polymer dispersed liquid-crystal film material is very low, contrast is higher, hot
The cohesive force of stability preferably, between two layers of tin indium oxide plastic film is also very strong, meets public place standards for safe use.
Further, the β-hydroxyethyl methacry-late is produced using Beijing lark prestige Science and Technology Ltd.,
For enhancing the cohesive force between macromolecule network and indium tin oxide films；The just own ester of methacrylic acid is relaxed using Beijing
The big chemical industry instrument Co., Ltd production of uncle, the polyethylene glycol dimethacrylate 1000 uses the triumphant wound of West Beijing
The production of new science and technology Co., Ltd, the just own ester of methacrylic acid and polyethylene glycol dimethacrylate 1000 are all for reducing
The network density of polymer；The cyclohexanedimethanol dimethylacrylate is given birth to using Beijing lark prestige Science and Technology Ltd.
Production, it is used for enhancing the glass transition temperature of macromolecule network；The glycidyl methacrylate uses Beijing
The production of lark prestige Science and Technology Ltd., it is used for enhancing the contrast of polymer dispersed liquid crystals.
Corresponding with a kind of polymer dispersed liquid-crystal film material, the present invention also provides a kind of polymer dispersed liquid crystals is thin
Membrane material preparation method for material, includes the following steps：
Step 1：The mass ratio of polymerized monomer and the uniform mixture of liquid crystal, polymerized monomer and liquid crystal is 4:1-1:4, liquid crystal exists
The parts by weight that content in mixture is 400~800；
Step 2：Photoinitiator is added in, the content for adding in photoinitiator in the mixture is 1~100 parts by weight；
Step 3：Liquid crystal film is prepared, the stirring of liquid crystal, polymerized monomer and photoinitiator is clipped in two panels afterwards is coated with oxidation
It among the conductive plastic film of indium tin, is squeezed with roller bearing, 0.5 micron to 4 microns thick thin layer is formed, in polymerized monomer/liquid crystal
It is more than the clearing point temperature of the liquid crystalline phase of composite material that 0 DEG C -25 DEG C are 1-20mw/cm using light intensity2Ultraviolet light thin layer
1-20 minutes.
Beneficial effects of the present invention：This method is easy to operate, when the liquid crystal film of preparation uses scattering states and transparent state it
Between switching be swift in response, driving voltage is relatively low, securely and reliably.
Description of the drawings
Fig. 1 is the molecular formula of β-hydroxyethyl methacry-late in embodiment.
Fig. 2 is the molecular formula of glycidyl methacrylate in embodiment.
Fig. 3 is the molecular formula of the just own ester of methacrylic acid in embodiment.
Fig. 4 is the molecular formula of polyethylene glycol dimethacrylate 1000 in embodiment.
Fig. 5 is the molecular formula of embodiment cyclohexane dimethanol dimethylacrylate.
Fig. 6 is the voltage-transmittance curve for preparing polymer dispersed liquid-crystal film material.
Fig. 7 is the scanning electron microscopic picture of the macromolecule network of the polymer dispersed liquid-crystal film material prepared.
Specific embodiment
A kind of polymer dispersed liquid-crystal film material preparation method, includes the following steps：
Step 1：The mass ratio of polymerized monomer and the uniform mixture of liquid crystal, polymerized monomer and liquid crystal is 4:1~1:4, liquid crystal exists
The parts by weight that content in mixture is 400~800；
Step 2：Photoinitiator is added in, the content for adding in photoinitiator in the mixture is 1~100 parts by weight；
Step 3：Liquid crystal film is prepared, the stirring of liquid crystal, polymerized monomer and photoinitiator is clipped in two panels afterwards is coated with oxidation
It among the conductive plastic film of indium tin, is squeezed with roller bearing, 0.5 micron to 4 microns thick thin layer is formed, in polymerized monomer/liquid crystal
It is more than the clearing point temperature of the liquid crystalline phase of composite material that 0 DEG C -25 DEG C are 1-20mw/cm using light intensity2Ultraviolet light thin layer
1-20 minutes.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing to performing creative labour
A little to replace and deform, these are replaced and deformation is within the scope of the present invention.
Claims (2)
1. a kind of polymer dispersed liquid-crystal film material, the material include liquid crystal, polymerized monomer and photoinitiator, polymerized monomer
Mass ratio with liquid crystal is 4:1~1:4, the mass ratio of polymerized monomer and photoinitiator is 1000:1~10:3, polymerized monomer is
73~120 parts by weight, it is characterised in that：The polymerized monomer is β-hydroxyethyl methacry-late, Glycidyl methacrylate
Glyceride, the just own ester of methacrylic acid, polyethylene glycol dimethacrylate 1000 and cyclohexanedimethanol dimethacrylate
The mixture of ester, β-hydroxyethyl methacry-late is 15~25 parts by weight in the mixture, glycidyl methacrylate
For 15~25 parts by weight, the just own ester of methacrylic acid is 8~15 parts by weight, and polyethylene glycol dimethacrylate 1000 is
25~35 parts by weight and cyclohexanedimethanol dimethylacrylate are 10~20 parts by weight.
A kind of 2. preparation method of polymer dispersed liquid-crystal film material according to claim 1, which is characterized in that the party
Method includes the following steps：
Step 1：The mass ratio of polymerized monomer and the uniform mixture of liquid crystal, polymerized monomer and liquid crystal is 4:1~1:4, liquid crystal is mixing
The parts by weight that content in object is 400~800；
Step 2：Photoinitiator is added in, the content for adding in photoinitiator in the mixture is 1~100 parts by weight；
Step 3：Liquid crystal film is prepared, the stirring of liquid crystal, polymerized monomer and photoinitiator is clipped in two panels afterwards is coated with tin indium oxide
Conductive plastic film among, squeezed with roller bearing, formed 0.5 micron to 4 microns thick thin layer, it is compound in polymerized monomer/liquid crystal
It is more than the clearing point temperature of the liquid crystalline phase of material that 0 DEG C -25 DEG C are 1-20mw/cm using light intensity2Ultraviolet light thin layer 1-20
Minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116468.2A CN108164652A (en) | 2016-12-07 | 2016-12-07 | A kind of polymer dispersed liquid-crystal film material and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116468.2A CN108164652A (en) | 2016-12-07 | 2016-12-07 | A kind of polymer dispersed liquid-crystal film material and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108164652A true CN108164652A (en) | 2018-06-15 |
Family
ID=62526289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611116468.2A Pending CN108164652A (en) | 2016-12-07 | 2016-12-07 | A kind of polymer dispersed liquid-crystal film material and preparation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108164652A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884817A (en) * | 2019-04-03 | 2019-06-14 | 扬州晶彩智能玻璃科技有限公司 | A kind of low voltage drive liquid crystal light modulation film and preparation method thereof |
| GB2581413A (en) * | 2018-11-27 | 2020-08-19 | Theunseen Ltd | Coating composition |
-
2016
- 2016-12-07 CN CN201611116468.2A patent/CN108164652A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2581413A (en) * | 2018-11-27 | 2020-08-19 | Theunseen Ltd | Coating composition |
| CN109884817A (en) * | 2019-04-03 | 2019-06-14 | 扬州晶彩智能玻璃科技有限公司 | A kind of low voltage drive liquid crystal light modulation film and preparation method thereof |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |