Photochromic double-shell microcapsule and preparation method and application thereof

A photochromic and photochromic material technology, applied in the field of functional polymer material preparation, can solve the problems of wide particle size distribution, easy adhesion, easy loss of photochromic organic solution, etc., to achieve wear resistance and durability Good, good processing resistance, the effect of maintaining photochromic performance

Inactive Publication Date: 2013-01-23
CHINA TEXTILE ACAD JIANGNAN BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 200810057392.X prepared a single-shell photochromic microcapsule, but because the melamine resin prepolymer used is prone to sticking at the initial stage of polymerization, the prepared microcapsules are easy to form multi-core particles, resulting in a relatively small particle size distribution. Wide, the surface of the microcapsules is not easy to form a dense and smooth shell, and the internal photochromic organic solution is easy to lose

Method used

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  • Photochromic double-shell microcapsule and preparation method and application thereof
  • Photochromic double-shell microcapsule and preparation method and application thereof
  • Photochromic double-shell microcapsule and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0043] Mix and emulsify 10 parts of 6-nitro-1`,3`,3`-trimethylindoline spirochromene, 15 parts of polymer system regulator, and 200 parts of distilled water under high-speed shear at room temperature. Homogenize at medium and high speed for 30 minutes, and the homogenization rate is 10000rpm. Pour the homogenized emulsion into a three-necked flask, put it into a constant temperature water tank, add 0.5 parts of potassium persulfate under stirring conditions, raise the temperature to 80°C, and add 20 parts of formazan After cooling, adjust the pH value to 3-4 with acetic acid, add 1200 parts of etherified melamine resin dropwise at a stirring speed of 200 rpm, raise the temperature to 55°C, and keep it warm for 1.5 hours to complete the outer shell. One-layer wall building; then heated up to 65°C, kept warm for 1 hour, cooled, neutralized with ammonia water until the average H value was 7, obtained photochromic double-shell microcapsule solution, and dried to obtain powdery phot...

preparation Embodiment 2

[0049] At room temperature, mix and emulsify 10 parts of N-ethyl-3,3-dimethylspiroindoline naphthoxazine, 15 parts of polymer system regulator, and 200 parts of distilled water at high speed, that is, homogenize at medium and high speed for 30 minutes , the homogenization rate is 10000rpm, pour the homogenized emulsion into a three-necked flask, put it into a constant temperature water tank, add 0.5 parts of potassium persulfate under stirring conditions, raise the temperature to 80°C, and add 20 parts of ethyl methacrylate to carry out Build the inner wall, after cooling, adjust the pH value to 3-4 with acetic acid, add 80 parts of etherified melamine resin dropwise at a stirring speed of 200rpm, raise the temperature to 55°C, and keep it warm for 1.5h to complete the single wall building of the outer shell layer ; After cooling to room temperature, add 80 parts of etherified melamine resin dropwise again, heat up to 55°C, keep warm for 1.5h, carry out secondary wall building ...

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Abstract

The invention relates to a photochromic double-shell microcapsule and a preparation method and application thereof. The microcapsule comprises a core, an internal shell and an external shell, wherein the core is manufactured by a photochromic material; the internal shell adopts vinyl monomer as polymerizing monomer, and wraps the core in an interfacial polymerization way; and the external shell adopts etherifying melamine resin prepolymer as polymerizing monomer, and wraps the internal shell in an in-situ polymerization way. The photochromic double-shell microcapsule provided by the invention is simple in preparation technology, and is non-toxic and innocuous; the wall of the microcapsule is high in toughness, is wear-resistant, heat-proof and water-proof, is good in processability, and is capable of permanently implementing a photochromic function; and the photochromic double-shell microcapsule can be applied to the field of textile and printing, and meets the demands on personalization and counterfeiting prevention.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of functional polymer materials, and relates to a photochromic double-shell microcapsule and its preparation method and application. Background technique: [0002] Photochromic material means that when a compound A is irradiated by light of a certain wavelength, a photochemical reaction can occur to obtain a product B, and the colors of A and B (that is, the absorption of light) are obviously different. B can be restored to its original form A under the irradiation of another beam of light or by heating. Photochromic materials are reversible. [0003] Photochromic materials are sensitive to color change and bright in color. Coatings made of photochromic materials can be made into various daily necessities, clothing, toys, decorations, baby carriages or applied to interior and exterior walls, road signs and buildings, etc. Various signs and patterns will show colorful and gorgeous patterns o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14D06M23/12C09K9/02D06M101/34D06M101/06D06M101/10
Inventor 张艳崔桂新王颖郑小佳
Owner CHINA TEXTILE ACAD JIANGNAN BRANCH
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