Method for producing high-dispersing multi-group amphiphilic nano silicon oxide powder or dispersion

A technology of nano-silica and production method, which is applied in the field of synthesis and dispersion of nano-materials, which can solve the problems of difficult dispersion of nano-silica, achieve the effects of reduced particle agglomeration, stable performance, and difficult dispersion
CN101659415AInactive Publication Date: 2010-03-03SHANDONG HINA HI TECH MATERIAL
1 Cites 28 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG HINA HI TECH MATERIAL
Publication Date
2010-03-03
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method for producing high-dispersing multi-group amphiphilic nano silicon oxide powder or dispersion, which comprises: firstly, refining sodium silicate serving as a raw material by adding hydrogen peroxide; adding a surfactant in the refined sodium silicate serving as the raw material, controlling the formation and growth of particles by segmental acid addition precipitation; and at the same time, performing in-situ modification by replacing hydroxyl on the surfaces of the silicon dioxide particles with organic groups. In the process, the temperature and the pH valueare controlled first, and then the high-dispersing silicon dioxide powder is prepared by filtration, washing, vacuum filtration and drying. And the dispersing time is controlled by a combined dispersing technology of mechanical dispersion, grinding and ultrasound waves and by adding a combined dispersant and a stabilizer to further disperse in situ modified powder to prepare a nano dispersion. Thedispersion is stable in performance and good in dispersion effect and keeps the dispersion state of nano particles.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of synthesis of nanomaterials and dispersion of nanomaterials, and in particular relates to a production method of highly dispersed multi-group amphiphilic nano-silica powder or dispersion liquid. Background technique

[0002] Among the methods for wet production of nano-silica, the chemical direct synthesis method (also known as the improved precipitation method) invented by Chengdu Lianyu Technology Co., Ltd. is a relatively mature method (patent application number 200310123470.9). In the production of this method, diluting water and auxiliary agents are added to sodium silicate in advance, and the impurities in it are removed by using the flocculation ability of sodium silicate. The purity of the product is not less than 99.9%. During the reaction, the surface treatment is carried out by feeding in stages to control the formation and growth of silica particles, destroy the interaction of hydroxyl groups o...

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