CN85104765A - Fast microcapsule preparing method for liquid crystal emulsion - Google Patents
Fast microcapsule preparing method for liquid crystal emulsion Download PDFInfo
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- CN85104765A CN85104765A CN 85104765 CN85104765A CN85104765A CN 85104765 A CN85104765 A CN 85104765A CN 85104765 CN85104765 CN 85104765 CN 85104765 A CN85104765 A CN 85104765A CN 85104765 A CN85104765 A CN 85104765A
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Abstract
The invention relates to a method for preparing liquid crystal emulsion quick microcapsules in the liquid crystal encapsulation technology. The invention is mainly characterized in that two wall materials are used for encapsulating liquid crystal by double layers; during the preparation process, the inner wall material and the outer wall material of the liquid crystal core material capsule, alcohol and water are mixed into a mixture which is mutually soluble and insoluble according to a certain proportion, and the hardening treatment of the capsule wall is carried out by a heating curing method while the mixture is emulsified. The liquid crystal microcapsule prepared by the invention has the advantages of low cost, small granularity, good water resistance, color development and ultraviolet resistance, and high efficiency, and provides favorable conditions for further expanding the application range of the color-changing liquid crystal with obvious temperature effect and optical characteristic.
Description
What the present invention relates to is the liquid crystal rubber sheath application technology, is a kind of fast encapsullation with liquid-crystal emulsion.
Present liquid crystal between liquid and solid, more and more paid close attention to by people, this mainly is because nematic, cholesteric in the thermotropic liquid crystal have heat, light, electrical effect preferably, therefore can make the film temperature meter that color shows with these materials, surveys the liquid crystal film of various epidermis cancers.Making various ornaments, stationery, toy, advertisement and having a wide range of applications at aspects such as weaving, printing, nondestructive inspection, electronic circuit failure judgment.These application all are to comprise that with liquid crystal the glue technology is a prerequisite, also are to say that liquid crystal only makes microcapsules, and are just with practical value.
What the liquid crystal microcapsule method for making was at present better and more general has two kinds: the one, and water miscible complex coacervation; The 2nd, the interface condensation method.For preceding a kind of method for making, among the clear 50-11344 of Japan's special permission communique, propose with low boiling chloroform dissolving liquid crystal, the sclerosis of cyst wall needs cooling device, will carry out sensitization to base material before filming and handle, and also need add diaphragm after the film forming.This method for making shows certain influence owing to used organic solvent to the liquid crystal color.The technology of this method for making is more numerous, and the production cycle is longer, and the microcapsules of making fall short of service life, and resistance to water is relatively poor.For second kind of method for making, among the clear 50-4371 of Japan's special permission communique, proposed to form at certain solution interface the method for making microcapsules of the novel polymer of condensation with base polymer such as polyamide and emergencing copolymer mutually, this method for making is strict to the selection of polymer, in the condensation course of interface, must add interfacial agent, production technology is poorly control also, and the production cycle, relative the present invention was still longer.
The objective of the invention is the variable color liquid crystal that has remarkable temperature effect and optical characteristics for making, can extensive use in each field of national economy.
The present invention is achieved in that at first in the selection of wall material, two kinds of wall materials have been selected, adopt double-deck cyst wall to seal to liquid crystal, inwall selects for use high polar polymer as the inwall material, such as epoxy resin, polyamide etc.,, can combine with polar molecule or crosslinked because these material cohesion energy densities are bigger, these polymer of while are insoluble in water again, provides indispensable material to making the strong microcapsules of resistance to water.Outer wall has selected for use gelatin as the outer wall material, and in manufacturing process, gelatin is not only as the capsule wall material, and it is again the dispersant and the stabilizing agent of capsule simultaneously.For fear of the interference of organic solvent to liquid crystal display, make the color speed response responsive, the present invention adopts magnetic agitation heating and fusion method lysate nucleus material.Make the liquid crystal emulsion of liquid crystal microcapsule and examine material by liquid crystal, inside and outside wall material, alcohol and water are formed by a certain percentage, the mixed solution that is mixed with under 80-90 ℃ of situation.This mixed solution is (this moment, temperature kept 80-90 ℃) in emulsification, under violent mechanical agitation, form small spherical particle, core is a liquid crystal molecule, the outsourcing resin, the surface is a gelatin, the size of spherolite has determined the gelatin adsorption capacity, usually during particulate＜5 μ m, the ability of the stable absorption of particulate gelatin is stronger, and this method for making can make particulate reach 3 μ m, and the pH value of liquid crystal emulsion is just between 8-9, thereby makes the gelatin grain be in stable state scope, therefore form in the microcapsules process and need not add any catalyst, also need not regulate pH value.
The liquid crystal microcapsule granularity little (average out to φ 3 μ m) that the present invention makes; It is bright-coloured to develop the color, and then develops the color better if add colouring agent; Resistance to water and UV resistant performance are better, and not adding diaphragm can use for a long time.The equipment that uses in manufacturing process is simple, process cycle is short (to be finished an emulsification and forms about 15 minutes of micro capsule technology, finish whole manufacture craft less than two hours), therefore make liquid crystal microcapsule with the present invention, cost is low, the efficient height provides advantageous conditions for the variable color liquid crystal with remarkable temperature effect and optical characteristics further enlarges its range of application.
Specific implementation of the present invention is further specified by following examples.
Example one: cholesterol oil base carbonic ester (Tianjin chemical reagent two factories, initial temperature are 9 ℃) 0.32 gram, Cholesteryl pelargonate 0.58 gram (Tianjin chemical reagent two factory's products), benzoic acid cholesterol ester 0.1 gram is placed on to smash to pieces in the cup and blows fusing with hot blast, be placed on then in the magnetic stirrer of heating and stirred 0.5～1 hour, make liquid crystal fully stir well even after, pour into for 10 milliliters with 10% in advance solvent aqueous gelatin solution again and smash to pieces in the cup (this smash to pieces cup will in water-bath more than 80 ℃).After polyamide fully mixes with 0.6 gram epoxy resin, 0.2 gram, under 20 ° of-30 ℃ of situations, be dissolved in the 10 gram absolute ethyl alcohols, all molten for after the yellow, pour above-mentioned smash to pieces (still in the water-bath more than 80 ℃) in the cup rapidly into, promptly obtain the emulsion mixture of liquid crystal.Then be placed in the water-bath more than 80 ℃ vigorous stirring and smash to pieces, under ten thousand rev/mins, smashed to pieces 5～10 minutes, add more than 80 ℃ 15～30 milliliters of hot water then, under thousand rev/mins～hundred rev/mins condition, stirred 10 minutes again.After treating that stirring finishes, promptly obtain the emulsion of liquid crystal microcapsule, filter through nylon cloth, the emulsion of filtering, available spraying process film forming, the blowing of dry available heat or other seasonings of film, by above-mentioned several steps, can obtain bright in 30～32 ℃ of scopes the liquid crystal film by the color variation of red → Huang → green → orchid → purple.
Example two: cholesterol oil base carbonic ester 0.68 gram, Cholesteryl pelargonate 0.22 gram, benzoic acid cholesterol ester 0.1 gram is used the manufacture craft identical with example one, and can obtain developing the color is the color change liquid crystal films of 40～42 ℃ of temperature ranges by red → Huang → green → orchid → purple.
Example three: cholesterol ester c 0.2 gram, cholesterol n-nonanoic acid fat 0.8 gram is used the manufacture craft identical with example one, and can obtain colour temp is the color change liquid crystal film of the red → Huang → green → orchid → purple of 45～65 ℃ of scopes.
Example four: cholesteryl chlorine 0.26 gram, cholesterol oil base carbonic ester 0.72 gram, oleyl alcohol 0.2 gram with example one identical manufacture craft, can obtain 35 ℃ of green liquid crystal films, this green can remain unchanged for a long period of time, or a period of time do not fade, can be used as special fixedly colour developing and use.
Claims (6)
1, liquid crystal rubber sheath is used a kind of fast encapsullation with liquid-crystal emulsion in the skill, this method for making is the improvement of complex coacervation method for making and interface condensation method for making in the liquid crystal rubber sheath technology, it is characterized in that: when preparing the emulsion of forming by a certain percentage by inside and outside wall material, alcohol, the water of liquid crystal nuclear capsule material, carry out liquid crystal microcapsule cyst wall cure process with the heating cure method, sealing of liquid crystal is to adopt double-deck cyst wall to seal.
2, this method for making of stating according to claim 1 is characterized in that magnetic agitation and fusion method are adopted in the dissolving of liquid crystal nuclear material.
3, method for making according to claim 1 is characterized in that the double-deck cyst wall of employing of sealing of liquid crystal is sealed.
4, according to claim 1,3 described method for makings, the outer wall material that it is characterized in that the capsule ball has been selected for use not only as capsule ball outer wall but also as the dispersant of capsule ball and the gelatin of stabilizing agent.
5, method for making according to claim 1 is characterized in that liquid crystal emulsion is the mixed solution that is mixed with by a certain percentage by liquid crystal nuclear material, inside and outside wall material, alcohol, water.
6,, it is characterized in that the mixed solution of liquid crystal nuclear material, inside and outside wall material, alcohol, water carries out the cyst wall cure process with (80-90 ℃) solidification method of heating simultaneously in emulsion process according to the described method of claim 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104765A CN85104765B (en) | 1985-06-14 | 1985-06-14 | Fast encapsullation with liquid-crystal emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104765A CN85104765B (en) | 1985-06-14 | 1985-06-14 | Fast encapsullation with liquid-crystal emulsion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104765A true CN85104765A (en) | 1986-06-10 |
| CN85104765B CN85104765B (en) | 1988-05-11 |
Family
ID=4794046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104765A Expired CN85104765B (en) | 1985-06-14 | 1985-06-14 | Fast encapsullation with liquid-crystal emulsion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85104765B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717692A (en) * | 2014-12-23 | 2016-06-29 | 乐金显示有限公司 | Liquid crystal display device including nanocapsule liquid crystal layer |
| CN106390872A (en) * | 2016-08-09 | 2017-02-15 | 丁玉琴 | A preparing method of a display screen liquid crystal microcapsule |
| CN106890607A (en) * | 2017-01-19 | 2017-06-27 | 中国科学院化学研究所 | The preparation method and liquid crystal microcapsule of a kind of liquid crystal microcapsule |
| CN108004789A (en) * | 2017-12-22 | 2018-05-08 | 江南大学 | A kind of preparation method of electrochromism liquid crystal microcapsule used for textiles |
| CN111560258A (en) * | 2020-05-27 | 2020-08-21 | 江苏集萃智能液晶科技有限公司 | Temperature-sensitive color developing liquid crystal microcapsule and preparation method thereof |
| CN114133789A (en) * | 2021-12-14 | 2022-03-04 | 江苏集萃智能液晶科技有限公司 | Liquid crystal microcapsule ink and preparation method thereof |
| CN114146649A (en) * | 2021-11-16 | 2022-03-08 | 江苏集萃智能液晶科技有限公司 | Epoxy resin liquid crystal microcapsule and preparation method thereof |
-
1985
- 1985-06-14 CN CN85104765A patent/CN85104765B/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717692A (en) * | 2014-12-23 | 2016-06-29 | 乐金显示有限公司 | Liquid crystal display device including nanocapsule liquid crystal layer |
| CN106390872A (en) * | 2016-08-09 | 2017-02-15 | 丁玉琴 | A preparing method of a display screen liquid crystal microcapsule |
| CN106890607A (en) * | 2017-01-19 | 2017-06-27 | 中国科学院化学研究所 | The preparation method and liquid crystal microcapsule of a kind of liquid crystal microcapsule |
| CN106890607B (en) * | 2017-01-19 | 2019-05-21 | 中国科学院化学研究所 | A kind of preparation method and liquid crystal microcapsule of liquid crystal microcapsule |
| CN108004789A (en) * | 2017-12-22 | 2018-05-08 | 江南大学 | A kind of preparation method of electrochromism liquid crystal microcapsule used for textiles |
| CN108004789B (en) * | 2017-12-22 | 2019-06-07 | 江南大学 | A kind of preparation method of electrochromism liquid crystal microcapsule used for textiles |
| CN111560258A (en) * | 2020-05-27 | 2020-08-21 | 江苏集萃智能液晶科技有限公司 | Temperature-sensitive color developing liquid crystal microcapsule and preparation method thereof |
| CN114146649A (en) * | 2021-11-16 | 2022-03-08 | 江苏集萃智能液晶科技有限公司 | Epoxy resin liquid crystal microcapsule and preparation method thereof |
| CN114133789A (en) * | 2021-12-14 | 2022-03-04 | 江苏集萃智能液晶科技有限公司 | Liquid crystal microcapsule ink and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104765B (en) | 1988-05-11 |
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