Preparation method of hydrophobic mesoporous silicon and application of hydrophobic mesoporous silicon in preparing waterproof colored coating

A technology of mesoporous silicon and water medium, which is applied in pigment-containing coatings, water/sewage treatment, chemical instruments and methods, etc., can solve the problems that hydrophobic mesoporous silicon is not environmentally friendly and cannot be recycled, and achieves strong practical application value. , Product environmental protection, economic and social benefits are huge

Active Publication Date: 2016-12-07
江西中竹生物质科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a preparation method of hydrophobic mesoporous silicon and its application in the preparation o...

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  • Preparation method of hydrophobic mesoporous silicon and application of hydrophobic mesoporous silicon in preparing waterproof colored coating

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Embodiment 1

[0014] In the specific implementation of the present invention, the preparation method of the hydrophobic mesoporous silicon is that 2g polyethylene oxide-polypropylene oxide-polyoxyethylene triblock copolymer (P123) is added to 70ml deionized water, Then add 12ml of hydrochloric acid with a mass concentration of 36%, 14mg of ammonium fluoride and 1.5g of mesitylene as a pore-enlarging agent, and stir at 40°C for 1 hour to form a mixed liquid; add 2g of ethyl orthosilicate and perfluorinated Octyltriethoxysilane 2g, continue to stir at 40°C for 12h, reflux at 95°C for 24h; suction filter to obtain a filter cake, wash the filter cake twice with water, and burn at 500°C for 8h to obtain a powdery hydrophobic media porous silicon.

Embodiment 2

[0016] In the specific implementation of the present invention, the preparation method of the hydrophobic mesoporous silicon is that 2.5g polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123) is added to 70ml deionized water , then add 11ml of hydrochloric acid with a mass concentration of 36%, 12mg of ammonium fluoride and 1.3g of mesitylene as a pore-enlarging agent, and stir at 35°C for 1 hour to form a mixed liquid; add 2.5g of ethyl orthosilicate and Perfluorooctyltriethoxysilane 2.5g, continue to stir at 40°C for 13h, reflux at 100°C for 12h; suction filter to obtain a filter cake, wash the filter cake twice with water, burn at 480°C for 9h to obtain a powder hydrophobic mesoporous silica.

Embodiment 3

[0018] In the specific implementation of the present invention, the preparation method of the hydrophobic mesoporous silicon is that 3.8g polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123) is added to 70ml deionized water , then add 12.5ml of hydrochloric acid with a mass concentration of 36%, 14mg of ammonium fluoride and 2.5g of mesitylene as a pore-enlarging agent, and stir at 45°C for 1 hour to form a mixed liquid; add 2.8g of ethyl orthosilicate to the mixed liquid and perfluorooctyltriethoxysilane 2.8g, continue stirring at 40°C for 14h, and reflux at 92°C for 24h; filter with suction to obtain a filter cake, wash the filter cake twice with water, and burn at 550°C for 6h to obtain a powder hydrophobic mesoporous silicon.

[0019] The application of the hydrophobic mesoporous silicon prepared by the methods described in Example 1, Example 2, and Example 3 in the preparation of waterproof color coatings is the same as the summary of the in...

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Abstract

The invention relates to a preparation method of hydrophobic mesoporous silicon and application of hydrophobic mesoporous silicon in preparing a waterproof colored coating and aims to effectively solve the problem that existing hydrophobic mesoporous silicon is environment-unfriendly and non-reusable and the application problem of the existing hydrophobic mesoporous silicon in preparing waterproof colored coatings. The preparation method includes: adding deionized water, hydrochloric acid, ammonium fluoride and mesitylene into polyethylene oxide-polypropylene oxide-polyethylene oxide tri-block copolymer, and stirring to form mixed liquid; adding ethyl orthosilicate and perfluorooctyl triethoxy silane, continuing to stir, flowing back, suction filtering, using water to wash a filter cake, and burning to obtain hydrophobic mesoporous silicon; filtering dye wastewater of an oily coating, adding the hydrophobic mesoporous silicon, adsorbing at room temperature, filtering out the hydrophobic mesoporous silicon, using alcohol and acetone to wash away surface dirt, vacuum drying, dispersing in alcohol, ultrasonically dispersing, coating, and drying to obtain the waterproof colored coating. The preparation method is stable and reliable, the hydrophobic mesoporous silicon is environment-friendly, and the mesoporous silicon can remove dye pollution and can be used for preparing the waterproof colored coating after adsorbing dye in water.

Description

technical field [0001] The invention relates to a waterproof material, in particular to a method for preparing hydrophobic mesoporous silicon and its application in preparing a waterproof color coating. Background technique [0002] Mesoporous silicon has a high specific surface area, orderly pores, high thermal stability, and is easy to synthesize. It is widely used in the fields of catalyst supports and adsorption materials. [0003] As an adsorption material, mesoporous silicon overcomes the disadvantage of insufficient adsorption capacity of the commonly used adsorbent activated carbon for dye macromolecules. Therefore, the application of mesoporous silicon as adsorption material has attracted widespread attention. For example, relevant literature reports that mesoporous silicon metal chromium ions and methylene blue have high adsorption capacity; through the study of mesoporous silicon on the adsorption mechanism and adsorption kinetics of algal toxins in wastewater, i...

Claims

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Application Information

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IPC IPC(8): C01B33/12D21H19/38C02F1/28C02F101/30
CPCC01B33/12C02F1/281C02F2101/308D21H19/38
Inventor 刘洁孟艳芳贺文明朱秋荣张永良
Owner 江西中竹生物质科技有限公司
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