Functional red microsphere and preparation thereof

A technology of red and microspheres, applied in nonlinear optics, instruments, optics, etc., can solve the problems of shortening the service life of electronic paper by electrophoresis, achieve the effect of improving color fastness, prolonging service life and preventing leakage

Inactive Publication Date: 2009-01-28
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to provide a light-weight and anti-agglomeration display technology to overcome the shortcomings of the existing electrophoretic display technology containing charge control agents

Method used

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  • Functional red microsphere and preparation thereof
  • Functional red microsphere and preparation thereof
  • Functional red microsphere and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: Synthesize the cross-linked cue ball polymer with the upper limit of the amount of glycidyl methacrylate and the lower limit of the amount of divinylbenzene (or allyl methacrylate). Its formula is listed in table 1:

[0046] Table 1

[0047]

[0048]Mix perylene anhydride with glycidyl methacrylate and divinylbenzene (or allyl methacrylate), and disperse the mixture with a ball mill for no less than 4 hours.

[0049] Dissolve azobisisobutyronitrile in acetonitrile in a 250ml four-neck flask equipped with agitator, condenser tube, air guide tube and thermometer, and stir to dissolve; then add the above-prepared monomer mixture dispersed with perylene anhydride, Bubble argon. After 30 minutes the temperature was raised to 70°C. Keep the system at 70° C. and the stirring speed at 300 rpm to 400 rpm for 24 hours. Finally, cool down to obtain a suspension of red cue balls. The suspension is filtered or centrifuged to obtain solid microspheres, washed th...

Embodiment 2

[0066] Example 2: Synthesis of cross-linked cue ball polymers with an intermediate amount of glycidyl methacrylate and an intermediate amount of divinylbenzene (or allyl methacrylate). Its formula is listed in Table 2.

[0067] Table 2

[0068]

[0069] The synthesis process is similar to Example 1.

Embodiment 3

[0070] Example 3: Synthesis of a crosslinked cue ball polymer with a lower limit for the amount of glycidyl methacrylate and an upper limit for the amount of divinylbenzene (or allyl methacrylate). Its formula is listed in Table 3.

[0071] The synthesis process is similar to Example 1.

[0072] table 3

[0073]

[0074] 2. Polymer coating on the surface of the cue ball

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Abstract

The invention relates to a functional red microsphere which is characterized in that the functional red microsphere includes a cue ball and a shell coated on the cue ball; the cue ball is formed by the polymerization of the monomers selected as follows: divinylbenzene, allyl raethacrylate or glycidyl methacrylate; the dosage of the monomers is 6 portions by weight; perylene is used as a copolymer crosslinking agent and the dosage thereof is 0.05 to 0.4 portions by weight; the shell is the homopolymer of the glycidyl methacrylate; the surface of the shell is processed by acid quaternary ammonium salt. The materials of the reaction related in the invention are easier to be obtained; the product of the invention is not only easy to be treated cleanly, but also does not dissolve in a higher organic solvent. The diameter of the microsphere can achieve 10Mum; and the functional red microsphere can be used as electrophoresis.

Description

technical field [0001] The invention relates to functional red microspheres and applications thereof, in particular to a functional polymer microsphere synthesized by a precipitation polymerization method in which perylene anhydride directly participates and a preparation method thereof. It belongs to the technical field of manufacturing functionalized microspheres. Background technique [0002] In the field of electrophoretic display, the existing electrophoretic suspension generally contains charge control agents and stabilizers. The charge control agent makes the surface of the particles charged and maintains the stability of the system, such as organic sulfate, sulfonate, etc.; the stabilizer makes the microcapsules wetted by the organic medium and disperses evenly in the medium, and also provides the microcapsules suspended in the dispersion system. spatial stabilization. These two additives determine that each component in the entire electrophoresis system must have ...

Claims

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Application Information

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IPC IPC(8): C08F257/00C08F265/06C08F8/44C08F220/32C08F8/14C08F212/36C08F220/40G02F1/167
Inventor 冯宇光滕枫黄世华
Owner BEIJING JIAOTONG UNIV
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