Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing modified nanometer silicon powder

A nano-silica powder and modification technology, which is applied in chemical instruments and methods, silicon compounds, inorganic chemistry, etc., can solve the problems of harsh process conditions, complex process flow, and high cost, and achieve mild process conditions, simple process flow, and low cost. low effect

Inactive Publication Date: 2017-07-07
JIANGSU TIANHENG NANO SCI & TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of modified nano-silica powder, which can solve the technical problems of complicated technical process, harsh process conditions, large energy consumption and high cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of modified nano silicon powder, comprising the steps of:

[0026] a: first add deionized water to sodium hydroxide to prepare solution 1, the mass concentration of solution 1 is 15%;

[0027] b: Put the pretreated nano-silicon powder into solution 1 for alkali treatment. The specific operation of the alkali treatment is: immerse the nano-silicon powder in a sodium hydroxide solution with a mass concentration of 20%, stir and react for 20 hours, and depressurize Filter with suction and wash with distilled water until the pH value is 8 to obtain alkali-treated silica powder. ;

[0028] c: Then put the alkali-treated nano-silicon powder into a sulfuric acid solution with a mass concentration of 10% for acid treatment, immerse the alkali-treated nano-silicon powder in step b in a sulfuric acid solution with a mass concentration of 10%, and stir for reaction 3 hour, suction filtration under reduced pressure, washing with distilled water until neutral ...

Embodiment 2

[0034] A preparation method of modified nano silicon powder, comprising the steps of:

[0035] a: first add deionized water to sodium hydroxide to prepare solution 1, the mass concentration of solution 1 is 20%;

[0036] b: Put the pretreated nano-silicon powder into solution 1 for alkali treatment. The specific operation of the alkali treatment is: immerse the nano-silicon powder in a sodium hydroxide solution with a mass concentration of 20%, stir and react for 22 hours, and depressurize Filter with suction and wash with distilled water until the pH value is 8.5 to obtain alkali-treated silicon powder. ;

[0037] c: Then put the alkali-treated nano-silicon powder into a sulfuric acid solution with a mass concentration of 10% for acid treatment, immerse the alkali-treated nano-silicon powder in step b in a sulfuric acid solution with a mass concentration of 10%, and stir for reaction 4 hour, suction filtration under reduced pressure, washing with distilled water until neutr...

Embodiment 3

[0043] A preparation method of modified nano silicon powder, comprising the steps of:

[0044] a: first add deionized water to sodium hydroxide to prepare solution 1, the mass concentration of solution 1 is 25%;

[0045] b: Put the pretreated nano-silicon powder into solution 1 for alkali treatment. The specific operation of the alkali treatment is: immerse the nano-silicon powder in a sodium hydroxide solution with a mass concentration of 20%, stir and react for 24 hours, and depressurize Filter with suction and wash with distilled water until the pH value is 9 to obtain alkali-treated silica powder. ;

[0046] c: then put the alkali-treated nano-silicon powder into a sulfuric acid solution with a mass concentration of 10% for acid treatment, immerse the alkali-treated nano-silicon powder in step b in a sulfuric acid solution with a mass concentration of 10%, and stir for reaction 5 hour, suction filtration under reduced pressure, washing with distilled water until neutral ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of modified nano-silicon powder, which comprises the following steps: a: preparing solution 1; b: putting nano-silicon powder into solution 1 for alkali treatment; c: performing acid treatment for nano-silicon powder ; d: Prepare carboxylated nano-silicon powder; e: Dissolve carboxylated nano-silicon powder in solvent to prepare solution 2, adjust pH value with hydrochloric acid, add coupling agent and hydroquinone dropwise to solution 2 to obtain reaction system, and the resulting reaction system was processed to obtain solution 3; f: adjust the pH value of solution 3 with ammonia water, and keep it warm to obtain modified nano-silica sol; g: dry, centrifugally wash, then wash with water, and vacuum-dry to obtain modified nano-silica sol Silica fume. The invention has simple process flow, mild process conditions, low energy consumption, strong operability, low cost, greatly shortens the reaction time and improves the reaction efficiency.

Description

technical field [0001] The invention relates to the technical field of functional nanometer materials, in particular to a preparation method of modified nano silicon powder. Background technique [0002] In recent years, polymer / inorganic nanocomposites have attracted widespread attention and achieved rapid development due to their unique properties. The excellent properties of the particles, such as strength, modulus, and dimensional stability, also provide the possibility of endowing materials with new special functions. Nano-silicon is an excellent structural and functional material. Nano-silicon powder has high purity, small particle size, and distribution Uniform properties, large specific surface area, high surface activity, low bulk density, non-toxic, tasteless, good activity. Nano-silicon powder is a new generation of optoelectronic semiconductor material. It has a wide gap energy semiconductor and is also a high-power light source material. It is widely used and c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/021
CPCC01B33/021
Inventor 仲跻和
Owner JIANGSU TIANHENG NANO SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com