Method for synthesizing micro-sphere used for electric paper by titanium dioxide or dye embedding method and application of micro-sphere used for electric paper in medium with low dielectric constant

A technology of electronic paper and embedding method, applied in instruments, optics, identification devices, etc., can solve problems such as shortening the life of electrophoretic displays, large proportion of pigments, and environmental pollution.

Inactive Publication Date: 2008-05-28
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Due to the large specific gravity of the pigment, the coated microcapsules will precipitate after a period of time, shortening the life of the electrophoretic display
[0004] 2) Generally, the mechanical strength of the microcapsule shell covering the pigment particle or the suspension of the pigment is relatively weak
[0007] 5) At present, most of the dispersion media used in electrophoretic suspensions in electronic paper are highly toxic solvents, such as toluene, xylene, etc., which cause certain pollution to the environment

Method used

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  • Method for synthesizing micro-sphere used for electric paper by titanium dioxide or dye embedding method and application of micro-sphere used for electric paper in medium with low dielectric constant
  • Method for synthesizing micro-sphere used for electric paper by titanium dioxide or dye embedding method and application of micro-sphere used for electric paper in medium with low dielectric constant
  • Method for synthesizing micro-sphere used for electric paper by titanium dioxide or dye embedding method and application of micro-sphere used for electric paper in medium with low dielectric constant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] The method for synthesizing microspheres for electronic paper by dye embedding method comprises the following steps:

[0130] 1) Selection of raw materials

[0131] ①Inner core monomer selection: 10-20 parts of methyl methacrylate,

[0132] 10-20 parts of n-butyl methacrylate,

[0133] 3-5 parts of allyl methacrylate;

[0134] ②Dye selection: solvent-based yellow dye 19 0.1-1.0 parts;

[0135] ③Selection of emulsifier: 0.1-0.8 parts of sodium lauryl sulfate;

[0136] ④ Initiator selection: 0.1-0.8 parts of potassium peroxodisulfate;

[0137] ⑤ Auxiliary agent: 0.02-0.20 parts of sodium bicarbonate;

[0138] ⑥Deionized water: 60-100 parts;

[0139] 2) Dyeing of the inner core monomer: dissolve 0.1-1.0 parts of solvent-based yellow dye 19 in 10-20 parts of methyl methacrylate, 10-20 parts of n-butyl methacrylate and 3-5 parts of allyl methacrylate After fully stirring and dissolving in the ester monomer mixture, filter to obtain the ...

Embodiment 2

[0159] The method for synthesizing microspheres for electronic paper by dye embedding method comprises the following steps:

[0160] 1) Selection of raw materials

[0161] ① Selection of core monomers: 5-20 parts of methyl methacrylate, 5-20 parts of n-butyl acrylate,

[0162] 5-20 parts of divinylbenzene;

[0163] ②Dye selection: solvent red dye 109 0.1~1.0 parts;

[0164] ③Emulsifier selection: 0.1-0.8 parts of sodium lauryl sulfate,

[0165] Sodium dodecylbenzenesulfonate 0.1~0.8 parts;

[0166] ④ Initiator selection: 0.1-0.8 parts of potassium peroxodisulfate;

[0167] ⑤ Auxiliary agent: 0.02-0.20 parts of sodium bicarbonate;

[0168] ⑥Deionized water: 60-100 parts;

[0169] 2) Dyeing of inner core monomers: dissolve 0.1-1.0 parts of solvent red dye 109 in monomers of 5-20 parts of methyl methacrylate, 5-20 parts of n-butyl acrylate and 5-20 parts of divinylbenzene In the mixed solution, after fully stirring and dissolving, filter to ob...

Embodiment 3

[0189] The method for synthesizing microspheres for electronic paper by dye embedding method comprises the following steps:

[0190] 1) Selection of raw materials

[0191] ① Selection of core monomers: 5-20 parts of methyl methacrylate, 5-20 parts of n-butyl acrylate,

[0192] 5-20 parts of divinylbenzene, 5-20 parts of glycidyl methacrylate;

[0193] ②Dye selection: Solvent blue dye 35 0.1~1.0 parts;

[0194] ③Selection of emulsifier: 0.1-2.0 parts of sodium lauryl sulfate,

[0195] Sodium dodecylbenzenesulfonate 0.1~2.0 parts;

[0196] ④ Initiator selection: 0.1-0.8 parts of potassium peroxodisulfate;

[0197] ⑤ Auxiliary agent: 0.12-0.60 parts of sodium bicarbonate;

[0198] ⑥Deionized water: 60-100 parts;

[0199] 2) Dyeing of the inner core monomer: dissolve 0.1-1.0 parts of solvent blue dye 35 in 5-20 parts of methyl methacrylate, 5-20 parts of n-butyl acrylate, 5-20 parts of divinylbenzene and 5-20 parts In 20 parts of glycidyl metha...

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Abstract

The invention relates to a method for synthesizing microballoon of electronic paper via titanium oxide or dye investing method, and relative application in the medium with low dielectric constant, while prior art generally dyes raw material, synthesizes inner core, synthesizes shell (the inner core has pyridinyl or epoxy at surface can eliminate shell), and ionizes outer shell of microballoon, to synthesize the microballoon of electronic paper. The inventive microballon prepared by titanium oxide or dye investing method can improve surface electric charge and activity, which further simplifies the process synthesizing different microcapsules and dying microballoon via different dyes. The invention provides a method for preparing organic colorful microballoon via microcapsule emulsion polymerization and preparing inorganic colorful microballoon via sol-gel method. The invention uses non-toxic solvent as electrophoresis medium to prepare electrophoresis solution, which can reduce VOC consumption and pollution.

Description

technical field [0001] The invention relates to a method for microspheres for electronic paper and the application of microspheres for electronic paper in media; in particular, to a method for synthesizing microspheres for electronic paper by titanium dioxide or dye embedding method and microspheres for electronic paper in low dielectric constant application in the medium. Background technique [0002] At present, the microcapsules used for electrophoresis are roughly divided into two types: powder and rotating balls. Their common feature is that the pigment particles or the suspension of the pigment are used as the core, and the outer coating of the polymer is carried out to synthesize core-shell particles. . Existing microcapsules of these types have the following disadvantages: [0003] 1) Due to the large specific gravity of the pigment, the coated microcapsules will precipitate after a period of time, shortening the life of the electrophoretic display. [0004] 2) Ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/00C08F2/44C08F2/22C08F26/06C08F12/00C08F20/10C08F20/44C08F18/08C08F14/04C08F8/00C08K3/22C08K3/36G09F9/37G02F1/167
Inventor 冯宇光黄世华腾枫
Owner BEIJING JIAOTONG UNIV
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