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Color electrophoretic particles and preparing method and application thereof

A color electrophoresis and particle technology, applied in instruments, optics, nonlinear optics, etc., can solve the problem of lack of color electrophoresis particles, and achieve the effect of improving display performance, convenient use, and pure and full color.

Inactive Publication Date: 2016-07-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned problems or deficiencies, the object of the present invention is to provide a kind of colored electrophoretic particles and its preparation method and application, so as to solve the problem of lack of necessary colored electrophoretic particles in color electrophoretic display devices

Method used

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  • Color electrophoretic particles and preparing method and application thereof
  • Color electrophoretic particles and preparing method and application thereof
  • Color electrophoretic particles and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Add 1ml of oil-soluble red 207 and styrene mixture to 50ml of water, and then add potassium persulfate. Among them, the mass ratio of oil-soluble red 207 to styrene is 10%, the volume ratio of potassium persulfate to styrene is 0.1%, and the water bath is 70°C, reacted for 24 hours, followed by centrifugation at 13000rpm, water washing and freeze-drying for 10h to obtain a red color Electrophoretic particles. Its particle size is 150nm and its density is 0.9g / cm 3 , Zeta potential is -25eV.

Embodiment 2

[0038] Mix 2ml of oil-soluble blue B and styrene into 50ml of water, followed by adding methacrylic acid and potassium persulfate. Wherein the mass ratio of oil-soluble blue B and styrene is 1%, the volume ratio of methacrylic acid and styrene is 10%, the volume ratio of potassium persulfate and styrene is 5%, and the water bath is 70 ℃, reacted for 24 hours, followed by Centrifuge at 13000rpm, wash with water and freeze-dry for 10h to obtain blue electrophoretic particles. Its particle size is 180nm and its density is 1.2g / cm 3 , Zeta potential is -120eV.

Embodiment 3

[0040] Mix Acid Green 104 with 50ml of aqueous solution, then add 0.3ml of methacrylic acid, 3ml of styrene, and azobisisobutylamidine hydrochloride in sequence. The mass ratio of Acid Green 104 to water is 15%, the volume ratio of azobisisobutylamidine hydrochloride to styrene is 5%, the water bath is 70°C, reacted for 24 hours, centrifuged at 13000rpm, washed with water and freeze-dried for 10h, Green electrophoretic particles were obtained. Its particle size is 300nm and its density is 1.2g / cm 3 , Zeta potential is +100eV.

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Abstract

The invention belongs to the technical field of preparation and applications of nanometer composite materials, and particularly relates to color electrophoretic particles and a preparing method and application thereof. The preparing method includes the steps that PS nanometer balls or polystyrene / polymethylacrylic acid composite nanometer balls serve as bodies, dye molecules are polymerized into the bodies with the free radical polymerization method, and therefore the color electrophoretic particles of color nanometer balls are formed. The color electrophoretic particles prepared with the method are pure and full in color, easy to disperse in water, easy to mix, convenient to use, safe and environmentally friendly, a plurality of hues can be obtained with the particles as color matching pigment, and the particles can serve as pigment to be applied to the printing ink field, the interior and exterior wall coating field, the leather dyeing field and the like. Meanwhile, as the prepared electrophoretic particles are good in monodispersity, the structural color can be generated through arrangement of the particles, and therefore the shown color is more gorgeous.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of nanocomposite materials, and in particular relates to a colored electrophoretic particle and its preparation method and application. Background technique [0002] In 1997, the Massachusetts Institute of Technology Media Lab proposed the concept of electronic ink (encapsulated electrophoretic ink), which is an ink-like suspension that exhibits different stable states under different polar voltages, and can realize reversible, dual Steady state, flexible display. Its principle is that a solution containing charged particles and dyes or a solution of two differently charged charged particles is encapsulated in a microcapsule or a microcup, and an electric field is applied to it to realize electrophoretic display [BarrettComiskey, J.D.Albert, HidekazuYoshizawa&JosephJacobson.Nature394(1998) 253-255]. Use printing technology to coat the microcapsules of this electronic ink on a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167C08F112/08C08F212/08C08F220/06C08F2/44
CPCC08F112/08C08F2/44C08F212/08C08F220/06
Inventor 王维佳彭波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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