Active nano silicon dioxide microspheres, solution, and preparation method and application thereof

A technology of nano-silica and microspheres, which is applied in the direction of silica, silicon oxide, coating, etc., can solve the problem of not being able to directly react with the modified glass, ceramics, and silicon surface, and achieve low product cost and synthetic Economic route, good aging resistance

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is the problem that the nano-silica microspheres used to construct the surface micro-nano structure in the prior art cannot directly react with the modified glass, ceramics and silicon surfaces, and an active nanometer silica microsphere is provided. Silica microspheres, the active nano-silica microspheres have surface activity and can be used to modify the surface of glass, ceramics and silicon
[0010] The second technical problem to be solved by the presen

Method used

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  • Active nano silicon dioxide microspheres, solution, and preparation method and application thereof
  • Active nano silicon dioxide microspheres, solution, and preparation method and application thereof
  • Active nano silicon dioxide microspheres, solution, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0052] Add 10ml of n-ethyl silicate and 45ml of ethanol into a 250ml four-neck flask, heat up to 60°C, then add 15ml of ammonia water and 25ml of ethanol into the reaction flask, and react at 60°C for 5 hours to obtain nano-silica microspheres After taking 5 drops of the reaction solution and diluting it with ethanol, the diameter of the nano-silica microsphere particles was tested with a Malvern particle size meter to be 410nm. The ammonia water in the reaction solution was removed by rotary evaporation, and then 10 ml of acetic acid, 5 ml of n-ethyl silicate and 0.05 g of water were added, and the reaction was continued at 50° C. for 5 hours before the end to obtain active nano-silica microspheres. After taking 5 drops of the reaction solution and diluting it with ethanol, the average diameter of the active nano-silica microsphere particles was tested by a Malvern particle size analyzer to be 550nm.

Embodiment 2

[0054] Add 8ml of n-ethyl silicate and 45ml of ethanol into a 250ml four-neck flask, heat up to 70°C, then add 15ml of ammonia water and 25ml of ethanol into the reaction flask, and react at 70°C for 5 hours to obtain nano-silica microspheres After taking 5 drops of the reaction solution and diluting it with ethanol, the diameter of the silica particles was tested with a Malvern particle size meter to be 230nm. The ammonia water in the reaction solution was removed by rotary evaporation, and then 10 ml of acetic acid, 5 ml of n-ethyl silicate and 0.05 g of water were added, and the reaction was continued at 50° C. for 5 hours before the end to obtain active nano-silica microspheres. After taking 5 drops of the reaction solution and diluting it with ethanol, the diameter of the silica particles was tested with a Malvern particle size analyzer to be 400nm.

Embodiment 3

[0056] Add 10ml of n-ethyl silicate and 45ml of ethanol into a 250ml four-neck flask, heat up to 40°C, then add 15ml of ammonia water and 25ml of ethanol into the reaction flask, and react at 40°C for 5 hours to obtain nano-silica microspheres After taking 5 drops of the reaction solution and diluting it with ethanol, the diameter of the silica particles was tested with a Malvern particle size meter to be 508nm. The ammonia water in the reaction solution was removed by rotary evaporation, and then 10 ml of acetic acid, 5 ml of n-ethyl silicate and 0.05 g of water were added, and the reaction was continued at 50° C. for 5 hours before the end to obtain active nano-silica microspheres. After taking 5 drops of the reaction solution and diluting it with ethanol, the diameter of the silica particles was tested with a Malvern particle size analyzer to be 610 nm.

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Abstract

The invention relates to active nano silicon dioxide microspheres, a solution and a preparation method and application thereof, and mainly solves the problem that the nano silicon dioxide microspheresprepared by using an existing method cannot be directly subjected to chemical reaction with the surfaces of modified glass, ceramic and silicon, so that a coating with a micro-nano characteristic structure is difficult to prepare. According to the technical scheme, the active nano silicon dioxide microspheres are adopted; the active nano silicon dioxide microspheres comprise nano silicon dioxidemicrospheres and an active layer on the surfaces of the nano silicon dioxide microspheres, and the active layer contains condensable siloxane, so that the problem is better solved, and preparation ofcoatings with micron or nano structure characteristics on the surfaces of glass, ceramics and silicon can be realized.

Description

technical field [0001] The invention relates to a solution of nano silicon dioxide microspheres capable of chemically reacting directly with glass, ceramics or silicon surfaces so as to prepare coatings with micron and nanostructure characteristics on these solid surfaces and its preparation method and application. Background technique [0002] The molecular structure, nanostructure, and microstructure of materials jointly determine the material function. Nanostructures are mesoscopic systems constructed or created based on micron and nanoscale material units according to certain rules, including one-dimensional, two-dimensional, and three-dimensional structures. Since nanostructures may endow materials with quantum size effects, small size effects, surface effects, quantum coupling effects, and synergistic effects, it is one of the hotspots in materials science research in recent years to use various methods to construct materials with micron- and nano-sized characteristic ...

Claims

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Application Information

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IPC IPC(8): C01B33/18C09D1/00C09D7/65C03C17/00
CPCC01B33/18C01P2004/03C01P2004/62C03C17/009C09D1/00C09D7/65
Inventor 翟晓东李应成苏智青沙鸥沈之芹
Owner CHINA PETROLEUM & CHEM CORP
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