CN104560059A - Liquid crystal material and application thereof - Google Patents
Liquid crystal material and application thereof Download PDFInfo
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- CN104560059A CN104560059A CN201410773824.2A CN201410773824A CN104560059A CN 104560059 A CN104560059 A CN 104560059A CN 201410773824 A CN201410773824 A CN 201410773824A CN 104560059 A CN104560059 A CN 104560059A
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Abstract
The invention relates to the field of materials and particularly relates to a liquid crystal material and application thereof. The liquid crystal material comprises the following components in parts by weight: 1-70 parts of a compound represented by a formula I, 1-20 parts of a compound represented by a formula II, 0-30 parts of a compound represented by a formula III, 5-50 parts of a compound represented by a formula VI and 10-30 parts of a compound represented by a formula V. The invention also discloses a light-adjusting film prepared from the liquid crystal material. The liquid crystal material has the advantages of better off-state haze and on-state transmittance, good intersolubility of polymers, relatively appropriate coating viscosity, wider operating temperature and more stable on-state gray and is suitable for large-scale industrial production and the higher and stable yield are retained.
Description
Technical field
The present invention relates to Material Field, particularly a kind of liquid crystal material and application thereof.
Background technology
Light modulation film is that a kind of novel Polymer Dispersed Liquid Crystal (Polymer Dispersed Liquid Crystal, PDLC) technology that utilizes reaches the new material regulating light percent of pass, is a kind of compound liquid-crystal material with special photoelectric properties.Its principle is after small molecule liquid crystal material and polymer mixed, and polymkeric substance issues looks at external influence and is separated, and liquid crystal molecule scatter the light modulation film or dimming glass that are formed and have display or light modulation effect from potpourri.The initiation conditions of prior art is mainly heat and causes and ultraviolet light (UV) initiation.
Light modulation film is without in external electric field situation, and in different droplet, the sensing of the director of liquid crystal is random, and thus light modulation film presents the strong scattering process of light, presents milky; If apply certain electric field, be enough to make all liquid crystal droplet directors and field parallel, if the ordinary refraction index of liquid crystal is consistent with refractive index polymer, then light modulation film presents pellucidity.The type light modulation film and conventional liquid crystal have many different, and its structure is simple, does not need polaroid IC module, does not need strict control to two substrates spacing, to production environment and liquid crystal quality requirements lower, its film thickness can according to spacer size free adjustment.
At present, light modulation film mainly with glass or mylar for substrate base material, because its raw material sources are extensive, unique photoelectric properties, manufacture craft is simple, and the advantages such as cost is lower, are widely used in the fields such as optoelectronic switch, projection screen, intelligent glass, grating.But also there is the deficiencies such as operating temperature range is less, screening effect is poor, driving voltage is higher, easy cracking comes unstuck in current light modulation film, makes its application be restricted in the application.
Many deficiencies that existing light modulation film liquid crystal material exists, such as mist degree is on the low side, operating temperature range is little, commercial production viscosity is low, unstable working condition etc.
Summary of the invention
The object of this invention is to provide a kind of liquid crystal material and application thereof, described liquid crystal material is particularly useful for the light modulation film of low-voltage, wide temperature range type.
For achieving the above object, the technical scheme that concrete employing is following:
A kind of liquid crystal material, by weight, comprise the compound representated by 1-70 part general formula I, the compound representated by 1-20 part general formula II, compound representated by 0-30 part general formula III, the compound representated by 5-50 part general formula VI and the compound representated by 10-30 part general formula V;
The structure of described general formula I-general formula V is as follows:
In general formula I-general formula V, R
1-R
5the alkyl of expression 2-8 separate C atom or alkoxy, L
1, L
2, L
3expression Isosorbide-5-Nitrae-phenylene that separate expression-H or-F, A, B are separate or Isosorbide-5-Nitrae-cyclohexyl.
Preferably, liquid crystal material provided by the present invention, by weight, comprising:
1), the compound representated by one or more general formula Is of 20-65 part;
2), the compound representated by one or more general formula Is I of 1-20 part;
3), the compound representated by one or more general formula III of 0-20 part;
4), the compound representated by one or more general formula Is V of 5-50 part;
5), the compound representated by one or more general formulas V of 10-30 part, above-mentioned 1) to 5) sum is 100 parts.
More preferably, liquid crystal material provided by the present invention, by weight, comprising:
1), the compound representated by one or more general formula Is of 24-59 part;
2), the compound representated by one or more general formula Is I of 5-15 part;
3), the compound representated by one or more general formula III of 0-20 part;
4), the compound representated by one or more general formula Is V of 6-45 part;
5), the compound representated by one or more general formulas V of 11-28 part, above-mentioned 1) to 5) sum is 100 parts.
Most preferably, liquid crystal material provided by the present invention, by weight, comprising:
1), the compound representated by one or more general formula Is of 36-59 part;
2), the compound representated by one or more general formula Is I of 8-15 part;
3), the compound representated by one or more general formula III of 10-18 part;
4), the compound representated by one or more general formula Is V of 6-22 part;
5), the compound representated by one or more general formulas V of 14-28 part, above-mentioned 1) to 5) sum is 100 parts.
In technical scheme provided by the invention, preferably, the structure in general formula I-general formula V is as follows:
In above-mentioned formula, R
1represent alkyl or the alkoxy of 2-8 C atom, R
2-R
5the alkyl of expression 2-8 separate C atom.
Preferred, in the inventive solutions, the compound representated by general formula I is selected from one or more in following compounds:
Compound representated by general formula II is selected from one or more in following compounds:
In general formula I I, preferably adopt the compound representated by II-3.
Compound representated by general formula III is selected from one or more in following compounds:
In general formula III, preferably adopt the compound representated by III-a3 and/or III-b1.
Compound representated by general formula VI is selected from one or more in following compounds:
Compound representated by general formula V is selected from one or more in following compounds:
Liquid crystal material of the present invention can be prepared according to the preparation method of this area routine.Meanwhile, liquid crystal material optical anisotropy of the present invention is comparatively large, generally all more than 0.20, ensures that light modulation film has fine OFF state mist degree; Described liquid crystal material cleaning point is very high, and substantially more than 100 DEG C, and cryogenic property is good, so ensure that it has wider working range (-20 DEG C-95 DEG C); Liquid crystal material of the present invention also has good ON state transmitance in addition, good polymkeric substance mutual solubility, and more stable ON state gray scale; Described liquid crystal material viscosity is at 100mm
2/ more than s, is applicable to suitability for industrialized production, and keeps higher with stable yield, benefits from its range of application of scale effect simultaneously and is greatly expanded.
Technical scheme of the present invention also comprises the light modulation film utilizing liquid crystal material of the present invention to prepare, the structure of such as light modulation film as shown in Figure 1, light modulation film is made up of upper substrate base material, upper substrate conductive layer, spacer, infrabasal plate conductive layer and infrabasal plate base material, wherein upper substrate base material and upper substrate conductive layer form upper substrate, and infrabasal plate conductive layer and infrabasal plate base material form infrabasal plate.
The technological means that the preparation method of light modulation film can adopt this area conventional, the present invention does not repeat this.
Light modulation film made by the present invention makes large area display by splicing, present light modulation film is mainly used in the large-scale public arenas such as glass-film wall, Smart Home, office space, cinema, there is the successful example being applied to automotive window in addition, estimate spread all over various occasion in the application of following PDLC light modulation film, for people's Working Life brings convenience with joyful.
Accompanying drawing explanation
Fig. 1 is light modulation film sectional structure chart;
Fig. 2 is the V-T curve of the light modulation film utilizing the liquid crystal material of embodiment 1 to make, and wherein, horizontal ordinate is voltage (V), ordinate is transmitance (%);
Fig. 3 is the temperature-mist degree line of the light modulation film utilizing the liquid crystal material of embodiment 1 to make, and wherein, horizontal ordinate is temperature (T), ordinate is mist degree (%);
Wherein, 1, upper substrate base material; 2, upper substrate conductive layer; 3, spacer; 4, infrabasal plate conductive layer; 5, infrabasal plate base material.
Embodiment
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Liquid crystal monomer raw material used in the present invention is Beijing Bayi Space liquid crystal Science and Technology Ltd. and provides.
In the embodiment of the present invention, the preparation of liquid-crystal composition is all adopted with the following method:
The preparation of uniform liquid crystal adopts the heat of solution method generally used in the industry, first liquid-crystal compounds is weighed by weight percentage with balance, wherein weigh addition sequence without particular requirement, usually mixing is weighed successively with liquid-crystal compounds fusing point order from high to low, at 60-100 DEG C, add thermal agitation makes each component melt evenly, again after filtration, revolve steaming, finally encapsulate and obtain target sample.
Except as otherwise noted, in context, number percent is weight percentage, and all temperature are degree Celsius to provide.Use following abbreviation:
△ n is optical anisotropy (20 DEG C), and Δ ε is dielectric anisotropy (25 DEG C, 1000Hz), and η is bulk viscosity (mm
2/ s, 20 DEG C), Cp is the cleaning point (DEG C) of liquid-crystal composition.
Embodiment 1
Liquid crystal material component described in the present embodiment and formula are in table 1.
Table 1: embodiment 1 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-4 | 10 | Δn | 0.246 |
| I-6 | 10 | Δε | 14 |
| III-a3 | 6 | η | 118 |
| III-b1 | 10 | Cp | 120 |
| I-11 | 8 | ||
| I-14 | 8 | ||
| II-3 | 8 | ||
| IV-a1 | 6 | ||
| IV-a3 | 4 | ||
| Ⅴ-a4 | 8 | ||
| IV-c4 | 4 | ||
| Ⅴ-b1 | 6 | ||
| Ⅴ-b2 | 6 | ||
| IV-b3 | 6 |
Embodiment 2
Polymer dispersion liquid crystal material component described in the present embodiment and formula are in table 2.
Table 2: embodiment 2 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-3 | 12 | Δn | 0.249 |
| I-4 | 12 | Δε | 13.5 |
| III-a3 | 6 | η | 113 |
| III-b1 | 8 | Cp | 118 |
| I-11 | 6 | ||
| I-14 | 10 | ||
| II-3 | 8 | ||
| IV-a1 | 8 | ||
| IV-a3 | 8 | ||
| V-a4 | 6 | ||
| V-b1 | 10 | ||
| V-b2 | 6 |
Embodiment 3
Polymer dispersion liquid crystal material component described in the present embodiment and formula are in table 3.
Table 3: embodiment 3 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-3 | 6 | Δn | 0.253 |
| I-4 | 11 | Δε | 12 |
| III-a3 | 5 | η | 106 |
| III-b1 | 8 | Cp | 117 |
| I-9 | 12 | ||
| I-11 | 12 | ||
| I-14 | 12 | ||
| IV-c2 | 6 | ||
| II-3 | 10 |
| V-a4 | 6 | ||
| V-b1 | 12 |
Embodiment 4
Polymer dispersion liquid crystal material component described in the present embodiment and formula are in table 4.
Table 4: embodiment 4 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-1 | 12 | Δn | 0.250 |
| I-3 | 12 | Δε | 17.3 |
| I-4 | 12 | η | 105 |
| III-a3 | 9 | Cp | 103 |
| III-b1 | 9 | ||
| II-3 | 5 | ||
| IV-a1 | 3 | ||
| IV-a3 | 4 | ||
| V-a4 | 13 | ||
| V-b1 | 3 | ||
| V-b2 | 3 | ||
| IV-b3 | 15 |
Embodiment 5
Table 5: embodiment 5 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-3 | 6 | Δn | 0.201 |
| I-4 | 6 | Δε | 15.5 |
| I-9 | 6 | η | 102 |
| I-13 | 6 | Cp | 100 |
| II-3 | 15 | ||
| IV-a1 | 7 |
| IV-a2 | 4 | ||
| IV-a3 | 4 | ||
| IV-a4 | 6 | ||
| V-a4 | 4 | ||
| IV-c2 | 6 | ||
| IV-c4 | 6 | ||
| V-b1 | 6 | ||
| V-b2 | 6 | ||
| IV-b3 | 12 |
Embodiment 6
Table 6: embodiment 6 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-4 | 15 | Δn | 0.233 |
| III-a3 | 5 | Δε | 12.5 |
| III-b1 | 5 | η | 100 |
| I-9 | 12 | Cp | 103 |
| I-11 | 12 | ||
| I-14 | 12 | ||
| I-2 | 8 | ||
| II-3 | 6 | ||
| IV-a1 | 6 | ||
| V-a4 | 5 | ||
| IV-c4 | 8 | ||
| V-b1 | 6 |
Embodiment 7
Table 7: embodiment 7 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-4 | 15 | Δn | 0.245 |
| I-6 | 5 | Δε | 13 |
| III-a3 | 5 | η | 107 |
| III-b1 | 12 | Cp | 102 |
| I-9 | 12 | ||
| I-11 | 12 | ||
| I-14 | 8 | ||
| IV-a6 | 6 | ||
| I-10 | 6 | ||
| II-3 | 5 | ||
| V-a4 | 8 | ||
| V-b1 | 6 |
Embodiment 8
Table 8: embodiment 8 component
| Component | Content (kg) | Performance parameter | Parameter value |
| I-3 | 10 | Δn | 0.233 |
| I-4 | 18 | Δε | 12.5 |
| III-b1 | 9 | η | 101 |
| I-14 | 7 | Cp | 120 |
| I-7 | 2 | ||
| II-3 | 10 | ||
| V-a4 | 8 | ||
| IV-c2 | 4 | ||
| IV-c4 | 4 | ||
| V-b1 | 10 | ||
| V-b2 | 10 | ||
| IV-b3 | 8 |
Experimental example
Light modulation film is obtained to the liquid crystal material preparation method conveniently that embodiment 1 obtains, the planing surface structure of light modulation film as shown in Figure 1, now carry out photoelectric properties and temperature performance test respectively to light modulation film, test data curve plotting is as shown in Fig. 2 (photoelectric properties curve) and Fig. 3 (temperature performance curve).
As can be seen from the data in Fig. 2, namely the transmitance that voltage is increased to 5V light modulation film there will be rising, when voltage is increased to 10V, transmitance can reach 50% substantially, continue to be increased to 18V, the trend that transmitance increases tends towards stability, and transmitance also reaches 80%, and the liquid crystal material that can obtain embodiment 1 thus has higher ON state transmitance at lower voltages.
As can be seen from the data in Fig. 3, light modulation film mist degree is less with temperature performance change, the decline that 60 DEG C just start to occur mist degree is increased in temperature, but until be increased to 100 DEG C of light modulation films nearly to still have higher mist degree, show good temperature performance or wider operating temperature range, the liquid crystal material that can obtain embodiment 1 thus has good photoelectric properties, just can show excellent transmitance under lower voltage driven; There is good temperature performance, the application under wide temperature environment can be adapted to; Have suitable viscosity simultaneously and be applicable to large-scale production, therefore liquid crystal material of the present invention has wide commercial promise.
Because length limit, only exemplify the test figure of separate embodiment herein, those skilled in the art can understand and repeat following test with other embodiments of the invention, also can obtain identical or close conclusion (of pressure testing).
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (10)
1. a liquid crystal material, is characterized in that, by weight, comprises the compound representated by 1-70 part general formula I,
Compound representated by 1-20 part general formula II,
Compound representated by 0-30 part general formula III,
Compound representated by 5-50 part general formula VI,
Compound representated by 10-30 part general formula V;
The structure of described general formula I-general formula V is as follows:
In general formula I-general formula V, R
1-R
5the alkyl of expression 2-8 separate C atom or alkoxy, L
1, L
2, L
3expression Isosorbide-5-Nitrae-phenylene that separate expression-H or-F, A, B are separate or Isosorbide-5-Nitrae-cyclohexyl.
2. liquid crystal material according to claim 1, is characterized in that, by weight, comprising:
1), the compound representated by one or more general formula Is of 20-65 part,
2), the compound representated by one or more general formula Is I of 1-20 part,
3), the compound representated by one or more general formula III of 0-20 part,
4), the compound representated by one or more general formula Is V of 5-50 part,
5), the compound representated by one or more general formulas V of 10-30 part.
1), the compound representated by one or more general formula Is of 24-59 part 3. liquid crystal material according to claim 1, is characterized in that, by weight, comprising:,
2), the compound representated by one or more general formula Is I of 5-15 part,
3), the compound representated by one or more general formula III of 0-20 part,
4), the compound representated by one or more general formula Is V of 6-45 part,
5), the compound representated by one or more general formulas V of 11-28 part.
1), the compound representated by one or more general formula Is of 36-59 part 4. liquid crystal material according to claim 1, is characterized in that, by weight, comprising:,
2), the compound representated by one or more general formula Is I of 8-15 part,
3), the compound representated by one or more general formula III of 10-18 part,
4), the compound representated by one or more general formula Is V of 6-22 part,
5), the compound representated by one or more general formulas V of 14-28 part.
5. the liquid crystal material according to any one of claim 1-4, is characterized in that, the compound representated by general formula I is selected from one or more in following compounds:
6. the liquid crystal material according to any one of claim 1-4, is characterized in that, the compound representated by general formula II is selected from one or more in following compounds:
7. the liquid crystal material according to any one of claim 1-4, is characterized in that, the compound representated by described general formula III is selected from one or more in following compounds:
8. the liquid crystal material according to any one of claim 1-4, is characterized in that, the compound representated by described general formula VI is selected from one or more in following compounds:
9. the liquid crystal material according to any one of claim 1-4, is characterized in that, the compound representated by described general formula V is selected from one or more in following compounds:
10. utilize light modulation film prepared by the liquid crystal material described in any one of claim 1-9.
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| CN107189793A (en) * | 2016-03-15 | 2017-09-22 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application |
| CN108624335A (en) * | 2017-03-15 | 2018-10-09 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid crystal material and its application |
| CN108676565A (en) * | 2018-03-19 | 2018-10-19 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid crystal material and its application |
| CN109423302A (en) * | 2017-08-21 | 2019-03-05 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application with high transmittance |
| CN109825309A (en) * | 2017-11-23 | 2019-05-31 | 江苏集萃智能液晶科技有限公司 | A kind of liquid-crystal composition and its light modulation device |
| CN110333619A (en) * | 2019-05-09 | 2019-10-15 | 烟台如水光电科技有限公司 | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate |
| CN110452710A (en) * | 2018-05-08 | 2019-11-15 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application |
| WO2021127950A1 (en) * | 2019-12-24 | 2021-07-01 | 北京八亿时空液晶科技股份有限公司 | Nematic liquid crystal composition and use thereof in liquid crystal display device |
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| CN107189793A (en) * | 2016-03-15 | 2017-09-22 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application |
| CN108624335A (en) * | 2017-03-15 | 2018-10-09 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid crystal material and its application |
| CN109423302A (en) * | 2017-08-21 | 2019-03-05 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application with high transmittance |
| CN109825309A (en) * | 2017-11-23 | 2019-05-31 | 江苏集萃智能液晶科技有限公司 | A kind of liquid-crystal composition and its light modulation device |
| US11643600B2 (en) | 2017-11-23 | 2023-05-09 | Smart Liquid Crystal Technologies Co., Ltd. | Liquid crystal mixture and light modulating device using the same |
| CN108676565A (en) * | 2018-03-19 | 2018-10-19 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid crystal material and its application |
| CN110452710A (en) * | 2018-05-08 | 2019-11-15 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application |
| CN110333619A (en) * | 2019-05-09 | 2019-10-15 | 烟台如水光电科技有限公司 | A kind of polymer dispersed liquid crystal film and its manufacturing method based on macromolecule transparent conductive substrate |
| WO2021127950A1 (en) * | 2019-12-24 | 2021-07-01 | 北京八亿时空液晶科技股份有限公司 | Nematic liquid crystal composition and use thereof in liquid crystal display device |
| CN114787319A (en) * | 2019-12-24 | 2022-07-22 | 北京八亿时空液晶科技股份有限公司 | Nematic liquid crystal composition and application thereof in liquid crystal display device |
| JP2023508304A (en) * | 2019-12-24 | 2023-03-02 | 北京八億時空液晶科技股▲ふん▼有限公司 | Applications in nematic liquid crystal compositions and liquid crystal display devices |
| JP7419536B2 (en) | 2019-12-24 | 2024-01-22 | 北京八億時空液晶科技股▲ふん▼有限公司 | Application in nematic liquid crystal compositions and liquid crystal display devices |
| CN114787319B (en) * | 2019-12-24 | 2024-05-10 | 北京八亿时空液晶科技股份有限公司 | Nematic liquid crystal composition and application thereof in liquid crystal display device |
| CN116165819A (en) * | 2023-04-25 | 2023-05-26 | 北京大学 | Wide-temperature-range electric control liquid crystal dimming film and preparation method thereof |
| CN116165819B (en) * | 2023-04-25 | 2023-06-27 | 北京大学 | Wide-temperature-range electric control liquid crystal dimming film and preparation method thereof |
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| CN104560059B (en) | 2016-09-07 |
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