Tungsten trioxide/polymer nano core-shell microsphere and preparing process thereof

A tungsten trioxide and nano-core-shell technology, which is applied in the field of tungsten trioxide/polymer nano-core-shell microspheres and its preparation, can solve thermal and chemical stability needs to be improved, strict material system requirements, and complex processes and other issues, to achieve the effect of improving photoelectric performance or processing performance, preventing effect, and changing optical performance

Inactive Publication Date: 2005-07-06
ZHEJIANG CHANGE ORGANIC SILICON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the first three methods have the disadvantages of strict requirements on the material system, complicated process and high cost.
Although the emulsion polymerization method is simple and efficient, its thermal stability and chemical stability need to be improved.

Method used

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  • Tungsten trioxide/polymer nano core-shell microsphere and preparing process thereof
  • Tungsten trioxide/polymer nano core-shell microsphere and preparing process thereof
  • Tungsten trioxide/polymer nano core-shell microsphere and preparing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Make 2.5g tungstic acid and 6.35g citric acid into an aqueous solution at a molar ratio of 3:1, continuously stir at 60°C, and then adjust the pH to 9 with ammonia water to form a tungsten trioxide / citric acid chelate solution . The solution was heated at 60° C. for 24 hours to generate a gel-like precursor, and was calcined in air in a muffle furnace at a high temperature of 700° C. for 6 hours to generate tungsten trioxide nanopowder. Accurately weigh 1.2g of tungsten trioxide nanospheres and disperse them in 25ml of absolute ethanol, and add 20ml of an ethanol solution of KH-570 silane coupling agent dropwise (concentration: 0.05g / ml). Then, under the condition of a water bath at 35° C., after reacting for 36 hours, vacuum drying at 40° C. overnight, the purified tungsten trioxide nanopowder treated with the coupling agent was obtained. In a three-necked flask equipped with a reflux condensing device, ultrasonically disperse 1.0 g of tungsten trioxide nanopowder tre...

Embodiment 2

[0025] Same as Example 1, but the concentration of KH-570 was changed to 0.05 g / ml, and the amount of vinylimidazole monomer was changed to 15 ml.

Embodiment 3

[0027] Same as Example 1, but the concentration of KH-570 was changed to 0.1 g / ml, and the amount of vinylimidazole monomer was changed to 30 ml.

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Abstract

This invention relates to a tungsten trioxide and polymer nanometer shell micro ball and the process method, which belongs to organic and inorganic, compound materials technique field and are processed by emulsion polymerization on the surface of tungsten trioxide particles. It covers macromolecule materials on the tungsten trioxide nanometer particles to avoid the reaction between outer environments with the particles and to alter the particles optics properties and it together with other organic semi-conductor makes effective compound to improve its photoelectricity property or process property.

Description

technical field [0001] The invention belongs to the technical field of organic / inorganic composite materials, and in particular relates to a tungsten trioxide / polymer nano core-shell microsphere and a preparation method thereof. Background technique [0002] In recent years, the preparation of core-shell inorganic / polymer nanocomposite particles by coating polymers on the surface of inorganic nanoparticles has attracted more and more attention from researchers. It is widely used in microelectronics, optoelectronics, biology and medicine Materials and other fields have broad application prospects. So far, the preparation of core-shell nanocomposite particles reported in the literature mainly includes interface polymerization, condensed phase separation, drying bath and emulsion polymerization. However, the first three methods have the disadvantages of strict requirements on the material system, complicated process and high cost. Although the emulsion polymerization method i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14C04B35/628
Inventor 杨正龙浦鸿汀
Owner ZHEJIANG CHANGE ORGANIC SILICON MATERIAL
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