Oil-water separation structure with super-hydrophobic/super-oleophylic performance as well as preparation method and application of oil-water separation structure

A technology of oil-water separation and super-oleophilicity, which is applied in separation methods, immiscible liquid separation, liquid separation, etc., can solve the problems of insufficient mechanical strength and durability, complicated preparation process, and low material adhesion, and achieve good super-hydrophobicity / Effect of super lipophilicity and simple preparation method

Active Publication Date: 2020-07-24
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 super-hydrophobic/super-oleophylic performance as well as preparation method and application of oil-water separation structure
  • Oil-water separation structure with super-hydrophobic/super-oleophylic performance as well as preparation method and application of oil-water separation structure
  • Oil-water separation structure with super-hydrophobic/super-oleophylic performance as well as preparation method and application of oil-water separation structure

Examples

Experimental program
Comparison scheme
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 super-hydrophobic / super-oleophylic performance as well as a preparation method and application of the oil-water separation structure. Thepreparation method of the oil-water separation structure comprises the following steps: uniformly dispersing a nano super-hydrophobic coating additive in a coating to obtain a modified super-hydrophobic coating, covering a separation substrate with the modified super-hydrophobic coating to form a modified super-hydrophobic coating layer with the thickness of 10-50 [mu]m, and drying the modified super-hydrophobic coating layer to obtain the oil-water separation structure. The oil-water separation structure can rapidly separate oil and water, has good super-hydrophobicity / super-lipophilicity, can continuously work and can be recycled. The oil-water separation structure can be directly sprayed onto metal nets, sponges, cloth and the like without pretreatment. There is no special requirementfor the size and shape of a sprayed object, and the appearance and scale can be designed at will 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 Applications(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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