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Application and preparation method of nano silicon dioxide in coralline network structure

A nano-silica and network structure technology, applied in the direction of silica, silicon oxide, nanotechnology, etc., can solve the problems of difficult industrialization, expensive raw materials and complex processes, and achieve large specific surface area, rich raw materials, and good network structure. Effect

Inactive Publication Date: 2018-10-02
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Most of the above patents use organic microspheres as templates, and the raw materials used are expensive and the process is complicated and difficult to realize industrialization
Moreover, most of these templates are spherical nanoparticles and microparticles, and there are few reports on other shapes of hollow nanomaterials.

Method used

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  • Application and preparation method of nano silicon dioxide in coralline network structure
  • Application and preparation method of nano silicon dioxide in coralline network structure
  • Application and preparation method of nano silicon dioxide in coralline network structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment prepares coral-shaped nano-silica according to the following steps:

[0038] 1. Slowly add polyethyleneimine to deionized water and keep stirring until it is completely dissolved to obtain a 100mg / L polyethyleneimine solution;

[0039] 2. Add 15mL of the polyethyleneimine solution prepared in step 1 and 35mL of absolute ethanol to the three-necked flask equipped with magnets in turn, and after mixing evenly, quickly add 1mL of tetraethyl orthosilicate and 1mL of ammonia water in turn, 30 ℃ magnetic stirring reaction for 8 hours to obtain coral-like nano-silica mixed solution;

[0040] 3. Centrifuge the coral-like nano-silica mixed solution obtained in step 2 and wash it with ethanol at a centrifugal speed of 12,000 rpm for 20 minutes, freeze-dry at a temperature of -50°C to obtain coral-like nano-silica.

Embodiment 2

[0042] The present embodiment prepares coral-shaped nano-silica by the same method as in Example 1, the difference is only that the prepared polyethyleneimine solution is 0mg / L.

Embodiment 3

[0044] The present embodiment prepares coral-shaped nano-silica by the same method as in Example 1, the difference is only that the prepared polyethyleneimine solution is 1000mg / L.

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Abstract

The invention discloses an application and preparation method of nano silicon dioxide in a coralline network structure. The preparation method includes steps: firstly, preparing polyethyleneimine solution; secondly, adding absolute ethyl alcohol, and well mixing; thirdly, adding ammonium hydroxide and tetraethyl orthosilicate into a reaction system; finally, centrifugally drying to synthesize nanosilicon dioxide particles in the coralline network structure. Due to introduction of polyethyleneimine, a novel nano structure unit is formed to make the nano silicon dioxide particles different fromconventional spherical silicon dioxide, and macromolecular mechanical performances can be remarkably improved by adding of the nano silicon dioxide as nano filler.

Description

technical field [0001] The present invention relates to a kind of preparation method of nano-filler, specifically a kind of preparation method and application of nano silicon dioxide of coral-like network structure, belong to the technical field of nano-material preparation. Background technique [0002] With the rapid development of science and technology and the advancement of technology, traditional materials can no longer meet the needs of many fields. Due to the significant improvement of people's requirements for material performance, various new materials, especially composite materials, have emerged continuously. In recent years, organic-inorganic composite materials have attracted extensive attention and research from domestic and foreign researchers. Polymer-inorganic nanocomposites are usually a combination of polymer organic phase and nano-particle inorganic phase in the nanometer to micrometer range. The two phases are not only simply superimposed, but also hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18B82Y40/00C08L5/04C08K7/00C08K3/36
CPCB82Y40/00C01B33/18C01P2004/04C01P2004/30C01P2004/62C08K3/36C08K7/00C08K2201/011C08L5/04
Inventor 周艺峰宋影陈鹏鹏聂王焰徐颖
Owner ANHUI UNIVERSITY