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Hollow microcapsules of polymer in multi-layers, and preparation method

A technology for hollow microcapsules and polymers, which is applied in the field of multilayer polymer hollow microcapsules and their preparation, can solve the problems of thermal stability and chemical stability to be improved, practical application limitations, etc., and achieves broad application prospects and use value. , Simple operation, excellent physical and chemical properties

Inactive Publication Date: 2006-02-01
ZHEJIANG CHANGE ORGANIC SILICON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the layer-layer self-assembly method and the template method have strict requirements on the system and need to be carried out at extremely low polymer concentrations, so their practical applications are greatly limited.
Although the emulsion polymerization method is simple, efficient and reproducible, its thermal stability and chemical stability need to be improved.

Method used

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  • Hollow microcapsules of polymer in multi-layers, and preparation method
  • Hollow microcapsules of polymer in multi-layers, and preparation method
  • Hollow microcapsules of polymer in multi-layers, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 14g of melamine and 11g of formaldehyde solution (the molar ratio of the two is 1:3.3) into a three-necked flask equipped with reflux condenser and stirrer, stir and react with a magnetic stirrer in a 60℃ water bath for 20 minutes to obtain prepolymer hydroxyl Methyl melamine. Then add 110 g of deionized water and 0.6 g of polyvinyl alcohol into a 250 mL three-necked flask. After adjusting the pH of the reaction solution to 4.6 with an acetic acid solution in advance, add the prepolymerization solution slowly at 60°C in a water bath, and stir to react 15 The reaction was stopped after 5 minutes, and quickly cooled in ice water. The obtained product dispersion system was centrifuged and settled under the condition of 3500 rpm, the supernatant was removed and then deionized water was added to redisperse. This process was repeated 4 times, and the sample was stored at low temperature to obtain MF nanoparticles.

[0033] Weigh 3.5 g of the alcohol solution of MF nanoparticl...

Embodiment 2

[0037] Same as Example 1, but the concentration of KH-570 was changed to 0.05 g / mL, and the amounts of vinyl imidazole and aniline monomers were changed to 15 mL and 10 mL.

Embodiment 3

[0039] The same as Example 1, but the concentration of KH-570 was changed to 0.1 g / mL, and the amounts of vinyl imidazole and aniline monomers were changed to 30 mL and 20 mL.

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PUM

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Abstract

A multi-layer hollow microcapsule in submicron class is prepared through treating by coupling agent, microemulsion polymerizing, electochemical oxidizing polymerizing, and acid etching. Its advantages are high thermal and chemical stability, unique structure and variable properties.

Description

Technical field [0001] The invention belongs to the technical field of functional polymer materials, and specifically relates to a multilayer polymer hollow microcapsule and a preparation method thereof. Background technique [0002] Hollow structure polymer microcapsule is a kind of functional material with special structure, the hollow part can be gas, liquid or other active ingredients with special function, and the outer layer is a shell composed of polymer. The multi-layer polymer hollow microcapsules with particle sizes ranging from nanometers to micrometers have the characteristics of small size, hollow, multi-layer and spherical capsules. They have shown unique structure and variable performance. Materials science, life sciences, electronic science and technology, biomedical engineering, catalysis science and technology, and magnetism have broad application prospects and potential important application values, and have gradually become research hotspots in recent years. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02
Inventor 杨正龙浦鸿汀
Owner ZHEJIANG CHANGE ORGANIC SILICON MATERIAL
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