Super-oleophylic and super-hydrophobic sponge for oil-water separation, and preparation method and application of super-oleophylic and super-hydrophobic sponge

A technology for superhydrophobic sponge and oil-water separation, which is applied in the field of super-lipophilic and super-hydrophobic sponge for oil-water separation and its preparation, can solve the problems of complex preparation process, short time-consuming, high raw material price, etc., and achieves easy availability of raw materials and reduced surface energy, low price

Inactive Publication Date: 2019-10-29
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high raw material prices and complicated preparation process in the prior art, the present invention discloses a super-oleophilic super-hydrophobic sponge for oil-water separation and its preparation method and application. The operation is simple, easy to prepare, and the preparation process is green and safe. , short time-consuming, wide source of raw materials, low price

Method used

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  • Super-oleophylic and super-hydrophobic sponge for oil-water separation, and preparation method and application of super-oleophylic and super-hydrophobic sponge
  • Super-oleophylic and super-hydrophobic sponge for oil-water separation, and preparation method and application of super-oleophylic and super-hydrophobic sponge
  • Super-oleophylic and super-hydrophobic sponge for oil-water separation, and preparation method and application of super-oleophylic and super-hydrophobic sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1, add 1 gram of nano silicon dioxide to 100 grams of xylene, then add 0.01 gram of silane coupling agent KH-550, and stir at 60° C. for 2 hours to obtain a xylene dispersion of silicon dioxide;

[0035] Step 2, adding 2 grams of methyl MQ silicone resin to the xylene dispersion of silicon dioxide, stirring at 60°C for 1 hour to obtain a hydrophobic dispersion containing silicon dioxide and methyl MQ silicone resin;

[0036] Step 3. Dip-coat the cleaned and pretreated polyurethane sponge in a hydrophobic dispersion containing silicon dioxide and methyl MQ silicone resin for 10 minutes, drain and dry naturally for 1 hour, and then place it in a blast drying oven at 40°C Bake down for 16 hours to obtain a super-oleophilic and super-hydrophobic sponge for oil-water separation.

Embodiment 2

[0038] Step 1, add 5 grams of nano silicon dioxide to 100 grams of toluene, then add 0.1 grams of silane coupling agent KH-560, and stir at 30 ° C for 4 hours to obtain a toluene dispersion of silicon dioxide;

[0039] Step 2, adding 10 grams of methylphenyl MQ silicone resin to the toluene dispersion of silicon dioxide, stirring at 40°C for 2 hours to obtain a hydrophobic dispersion containing silicon dioxide and methylphenyl MQ silicone resin;

[0040] Step 3, dip-coat the cleaned and pretreated melamine sponge in a hydrophobic dispersion containing silicon dioxide and methylphenyl MQ silicone resin for 10 minutes, drain and dry naturally for 1 hour, and then place it in a blast drying oven Bake at 80°C for 8 hours to obtain a super-oleophilic and super-hydrophobic sponge for oil-water separation.

Embodiment 3

[0042] Step 1, add 1 gram of nano silicon dioxide to 100 grams of benzene, then add 0.02 grams of silane coupling agent KH-570, and stir at 60°C for 2 hours to obtain a benzene dispersion of silicon dioxide;

[0043]Step 2, adding 10 grams of vinyl MQ silicone resin to the benzene dispersion of silicon dioxide, stirring at 50°C for 1.5 hours to obtain a hydrophobic dispersion containing silicon dioxide and vinyl MQ silicone resin;

[0044] Step 3. Dip the cleaned and pretreated polyurethane sponge into the hydrophobic dispersion containing silicon dioxide and vinyl MQ silicone resin for 10 minutes, drain and dry naturally for 1 hour, and then place it in a blast drying oven at 60°C Bake down for 12 hours to obtain a super-oleophilic and super-hydrophobic sponge for oil-water separation.

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Abstract

The invention discloses a super-oleophylic and super-hydrophobic sponge for oil-water separation, and a preparation method and application of the super-oleophylic and super-hydrophobic sponge, and belongs to the technical field of oil-water separation materials. Nano-silica and an organic dispersion liquid of MQ silicone are painted on the surface of a sponge by adopting the dip-coating method, inthe process of drying, with the volatilization of a solvent, the MQ silicone and the nano-silica produce phase separation and deposit on the surface of the sponge, a micron-nanometer secondary composite structure is formed on the surface of the sponge, and a good structural basis is provided for the super-oleophylic and super-hydrophobic properties of the sponge. In addition, according to the MQsilicone and the nano-silica treated by a silane coupling agent which are deposited on the surface of the sponge, the surface of the sponge has a lot of silicon elements, since the silicon elements have very low surface energy and good affinity with non-polar oil, and good hydrophobic and oleophylic properties are achieved on the sponge. The sponge prepared by the preparation method has excellentoil-water separation performance, the process is simple, the raw materials are easy to obtain, the cost is low, and volume production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation materials, and in particular relates to a super-oleophilic and super-hydrophobic sponge for oil-water separation and its preparation method and application. Background technique [0002] With the increase of oil extraction and the development of industry, water pollution caused by offshore oil spills and industrial oily sewage discharge has caused serious damage to the ecological environment. The technology of quickly and efficiently collecting oil floating on the water surface and realizing oil-water separation has attracted great attention from all over the world. Traditional oil-water separation methods, such as flocculation, membrane separation and gravity separation, all have the disadvantages of low efficiency and time-consuming. It is an effective oil-water separation method to use adsorbent materials to adsorb oil. However, commonly used adsorption materials such as clay, wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/40C08L75/04C08L61/28B01D17/022
CPCB01D17/0202C08J9/40C08J9/42C08J2361/28C08J2375/04C08J2483/04
Inventor 王煦漫张彩宁李白雪
Owner XI'AN POLYTECHNIC UNIVERSITY
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