Oil-water separation structure with superhydrophobic/superoleophilic properties and its preparation method and application

An oil-water separation, super-lipophilic technology, applied in separation methods, immiscible liquid separation, liquid separation and other directions, can solve the problems of insufficient mechanical strength and durability, low material adhesion, complex preparation process, etc., to improve the hydrophobic performance. , the preparation method is simple, and the effect of simplifying the preparation process

Active Publication Date: 2022-01-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are certain deficiencies in the existing methods for preparing special wettable interfaces, such as complex preparation process, high cost, poor performance, low material adhesion, insufficient mechanical strength and durability, etc.

Method used

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  • Oil-water separation structure with superhydrophobic/superoleophilic properties and its preparation method and application
  • Oil-water separation structure with superhydrophobic/superoleophilic properties and its preparation method and application
  • Oil-water separation structure with superhydrophobic/superoleophilic properties and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0065] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0066] Step 1, 10 mg of nanomaterials and 10 mL of solvent are ultrasonically mixed for 8 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, the nanomaterials are carbon nanotubes, and the solvent is dimethyl sulfoxide;

[0067] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min to stir evenly, obtain product C, wherein, catalyst is acetic acid, low surface energy coupling agent is methyltriethoxysilane, the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:0.1:10;

[0068] In step 3, the product C is subjected to solid-liquid separation, and the obtained solid is a nano-superhydrophobic coating additive, and the solid-liquid separa...

Embodiment 2

[0084] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0085] Step 1, 100 mg of nanomaterials and 100 mL of solvent are ultrasonically mixed for 10 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, the nanomaterials are carbon nanotubes, and the solvent is dimethyl sulfoxide;

[0086] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min until stirring evenly, obtain product C, wherein, catalyst is hydrochloric acid, low surface energy coupling agent is methyltrichlorosilane, the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:0.5:10;

[0087] Step 3, solid-liquid separation is carried out to the product C, and the obtained solid is a nano-superhydrophobic coating additive, and the meth...

Embodiment 3

[0092] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0093] Step 1, 10 mg of nanomaterials and 10 mL of solvent are ultrasonically mixed for 8 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, and the nanomaterials are SiO 2 , the solvent is xylene;

[0094] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min until stirring evenly, obtain product C, wherein, catalyst is hydrochloric acid, low surface energy coupling agent It is dodecyltrimethoxysilane, and the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:1:10;

[0095] In step 3, the product C is subjected to solid-liquid separation, and the obtained solid is a nano-superhydrophobic coating additive, and the solid-liquid separat...

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Abstract

The invention discloses an oil-water separation structure with superhydrophobic / superoleophilic properties and its preparation method and application. The preparation method of the oil-water separation structure comprises the following steps: uniformly dispersing the nanometer superhydrophobic coating additive in the coating to obtain modifying the super-hydrophobic coating, covering the modified super-hydrophobic coating on the separation substrate to form a modified super-hydrophobic coating with a thickness of 10-50 μm, and drying to obtain the oil-water separation structure. The oil-water separation structure of the present invention can quickly separate oil and water, has good superhydrophobicity / superlipophilicity, can work continuously, and can be recycled. The invention directly sprays the metal mesh, sponge, cloth, etc. without pretreatment. There are no special requirements for the size and shape of the spraying object, and the shape and scale can be designed arbitrarily according to actual needs.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials, and specifically relates to an oil-water separation structure with superhydrophobic / superoleophilic properties, a preparation method and application thereof. Background technique [0002] In recent years, frequent marine oil spills and oily wastewater caused by production and life have caused serious damage to precious water resources and the environment. In order to protect the environment and maximize the reuse of resources, it is an environmentally friendly and economical project to separate, recycle and reuse oil and water through special means, and it is also an important measure that benefits the country and the people. [0003] At present, oil-water separation in industry is mainly based on the density difference or chemical properties of water and oil, and the separation of oil and water is completed by using the principle of gravity sedimentation. The main methods are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022C09D7/62
CPCB01D17/02C09D7/62C08K9/06C08K3/36C08K3/041C08K2003/2241C08K2201/011
Inventor 王成张宪楠
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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