Monodisperse mesoporous silica microsphere powder and preparation method thereof

A technology of mesoporous silica and microsphere powder, applied in the direction of silica, silicon oxide, etc., can solve the problems of uneven application, affecting slippery feeling, rough surface, etc., achieving smooth spherical surface and low cost of synthetic raw materials , the effect of high oil absorption value

Active Publication Date: 2016-01-27
江西联锴新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the surface of the microsphere powder is rough and has not been modified by any process, resulting in uneven application on the skin, which affects the smoothness of the silica microsphere powder used on the skin of cosmetics

Method used

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  • Monodisperse mesoporous silica microsphere powder and preparation method thereof
  • Monodisperse mesoporous silica microsphere powder and preparation method thereof
  • Monodisperse mesoporous silica microsphere powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The specific process of preparing monodisperse mesoporous silica microsphere powder in this example is as follows:

[0058] (1) Weigh 0.05 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir and disperse 0.8 g of cetyl ammonium bromide in 5 g of deionized water, stir and disperse evenly. Mix the two dispersions evenly, and adjust the pH value to 7.5 with an absolute ethanol solution containing a certain concentration of ammonia water.

[0059] (2) Weigh 0.05 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir 13 g of tetraethyl orthosilicate (TEOS) in 25 g of deionized water, stir and disperse evenly. Mix the two dispersions and stir well.

[0060] (3) At room temperature, around 25°C, slowly add the dispersion obtained in step (2) to the dispersion obtained in step (1), stir while adding, and keep the stirring speed at 230r / min until white milky When the turbid liquid appears, stop stirring, keep...

Embodiment 2

[0065] The specific process of preparing monodisperse mesoporous silica microsphere powder in this example is as follows:

[0066] (1) Weigh 0.05 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir and disperse 0.8 g of cetyl ammonium bromide in 5 g of deionized water, stir and disperse evenly. Mix the two dispersions evenly, and adjust the pH value to 8.5 with an absolute ethanol solution containing a certain concentration of ammonia water.

[0067] (2) Weigh 0.05 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir 13 g of tetraethyl orthosilicate (TEOS) in 25 g of deionized water, stir and disperse evenly. Mix the two dispersions and stir well.

[0068] (3) At room temperature, around 25°C, slowly add the dispersion obtained in step (2) to the dispersion obtained in step (1), stir while adding, and keep the stirring speed at 100r / min until white milky When the turbid liquid appeared, the stirring was s...

Embodiment 3

[0073] The specific process of preparing monodisperse mesoporous silica microsphere powder in this example is as follows:

[0074] (1) Weigh 0.10 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir and disperse 0.8 g of cetyl ammonium bromide in 5 g of deionized water, stir and disperse evenly. Mix the two dispersions evenly, and adjust the pH value to 7.5 with an absolute ethanol solution containing a certain concentration of ammonia water.

[0075] (2) Weigh 0.10 g of carboxymethyl cellulose in 16 g of deionized water, stir and disperse evenly; stir 13 g of tetraethyl orthosilicate (TEOS) in 25 g of deionized water, stir and disperse evenly. Mix the two dispersions and stir well.

[0076] (3) Control the temperature at about 35°C, slowly add the dispersion obtained in the above step (2) into the dispersion obtained in step (1), stir while adding, and keep the stirring speed at 100r / min until it becomes white and milky Liquid appears, sto...

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Abstract

The invention discloses monodisperse mesoporous silica microsphere powder and a preparation method thereof. The method comprises the steps that a water-soluble macromolecule release agent is uniformly dispersed into deionized water to obtain a water-soluble polymer release agent pre-dispersing solution; a template agent is placed into the water-soluble polymer release agent pre-dispersing solution, a proper PH value is obtained through adjustment and then stirring and uniform dispersion are performed; then, tetraethoxysilane and the water-soluble polymer release agent dispersion solution are stirred and dispersed uniformly. The obtained tetraethoxysilane dispersion solution is added into the template agent dispersion solution, a sufficient reaction is performed by controlling the temperature, the stirring speed and the PH value, and monodisperse mesoporous silica microsphere powder is obtained through seasoning, centrifuging, drying and muffle furnace thermal treatment. The technology is simple, the condition controllability is high, the obtained monodisperse mesoporous silica microsphere powder is uniform in particle size, microspheres have the monodispersion and are free of stickiness, the oil absorption value is high, the spherical surface is smooth, smearing is light and smooth, and the monodisperse mesoporous silica microsphere powder is a good cosmetic additive raw material.

Description

technical field [0001] The invention relates to a preparation method of a mesoporous material, in particular to a preparation process of a monodisperse mesoporous silica micron spherical powder. Background technique [0002] Monodisperse mesoporous silica microsphere powder has become a material due to its good flow smoothness, huge oil absorption, excellent physical stability, non-toxicity, hydrophilicity, and easy functionalization of surface silicon hydroxyl groups. It has been widely used and developed in cosmetics, plastics, rubber, coatings, medicine and environmental protection industries. [0003] The preparation of silica microspheres usually has vapor deposition method, inverse microemulsion method, precipitation method and sol-gel method. Silica microspheres with good monodispersity can be prepared by vapor deposition method, but the instruments and equipment used in this method are expensive, and the operating conditions need to be strictly controlled. In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18
Inventor 宁海金徐先进马江平廖道发徐笑
Owner 江西联锴新材料有限公司
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