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Surface activity microballoons, preparation and application thereof

A technology of surface activity and microspheres, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of shortening the service life of electronic paper by electrophoresis, and achieve the effects of reducing consumption and pollution, prolonging service life and reducing pollution

Inactive Publication Date: 2009-01-07
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 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 that contains charge control agents and stabilizers, and the problem that electrophoretic elements with a larger specific gravity shorten the service life of electronic paper. performance and remain stable in the medium of surface-active microspheres

Method used

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  • Surface activity microballoons, preparation and application thereof
  • Surface activity microballoons, preparation and application thereof
  • Surface activity microballoons, preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1: Utilize allyl methacrylate to synthesize a cross-linked cue ball polymer with a lower limit of dosage. Its formula is listed in table 1:

[0058] Table 1

[0059]

[0060] Azobisisobutyronitrile, divinylbenzene, allyl methacrylate, 4-vinylpyridine (or 2-vinyl pyridine) were successively dissolved in methanol and stirred to dissolve. After bubbling argon gas for 30 minutes, keep the stirring speed at 300rpm-400rpm, start heating and raise the temperature to 70°C. Keep the temperature and speed at 70°C for 12 hours. After cooling, the reaction ends.

[0061] The product was suction-filtered to obtain a solid, which was washed with ethanol, suction-filtered three times, and finally dried.

[0062] like figure 1 Shown is a scanning electron micrograph of the surface-active microsphere parent ball obtained in Example 1 of the present invention.

[0063] The photo is obtained by spraying gold on the white powder, and then taking pictures with a Hitachi S-...

Embodiment 2

[0075] Example 2: Utilize allyl methacrylate to synthesize a cross-linked cue ball polymer with an intermediate amount. Its formula is listed in table 2:

[0076] Table 2

[0077]

[0078] The synthesis process is similar to Example 1.

Embodiment 3

[0079] Example 3: Utilizing allyl methacrylate to synthesize a cross-linked cue ball polymer with an upper limit. Its formula is listed in table 3:

[0080] The synthesis process is similar to Example 1.

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Abstract

The invention relates to a surface-active microsphere, as well as the preparation and the application thereof. The surface active microsphere is characterized in that the mother sphere of the surface active microsphere is formed by copolymerizing substances selected from the following monomers: styrene, divinylbenzene, methyl methacrylate, isobutyl methacrylate, n-butyl methacrylate, methyl acrylate, 4-vinylpyridine, 2-vinylpyridine, ethyl acrylate, n-butyl acrylate, acrylonitrile or allyl methacrylate; and the mother sphere is subjected to activation modification treatment. No specially appointed dispersant is used in the reaction of the invention, and the product can be easily processed cleanly. The surface-active microsphere can be used as an electrophoretic agent or a thermosensitive phase-transfer material.

Description

technical field [0001] The invention relates to surface-active microspheres and their preparation and application, in particular to a polymer microsphere with surface activity synthesized by dispersion polymerization involving 4-vinylpyridine and its application. The invention belongs to the technical field of manufacturing surface active 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 certain compat...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08F220/40C08F226/06C08F212/08C08F2/16C08F8/00G09F9/37G02F1/167
Inventor 冯宇光黄世华滕枫
Owner BEIJING JIAOTONG UNIV
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