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Method for preparing superhydrophilic/subaqueous superoleophobic modified substrate material

An underwater super-oleophobic and base material technology, applied in the field of polymer materials, can solve the problems of many steps, harsh chemical conditions, and complicated, etc., and achieve the effect of simple coating process, easy to obtain, and stable coating

Active Publication Date: 2019-11-29
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current method has certain defects, such as many and complicated steps, harsh chemical conditions or unstable modified coating, etc.

Method used

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  • Method for preparing superhydrophilic/subaqueous superoleophobic modified substrate material

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preparation example Construction

[0025] The present invention provides a method for preparing a superhydrophilic / underwater superoleophobic modified base material, which comprises the following steps:

[0026] Step 1, respectively preparing a certain concentration of styrene maleic anhydride copolymer solution and polyethyleneimine solution;

[0027] Step 2: Immerse the base material in the styrene maleic anhydride copolymer solution for a certain period of time, take it out and drain, and then immerse it in the polyethyleneimine solution for a certain period of time. Modified substrate material with superoleophobic properties.

[0028] In step 1, the described styrene maleic anhydride copolymer solution is a solution formed by dissolving styrene maleic anhydride copolymer in tetrahydrofuran, N,N-dimethylformamide or acetone solvent, and its solution concentration is 0.1 -30% (wt%).

[0029] In step 1, the polyethyleneimine solution is a solution formed by dissolving polyethyleneimine in deionized water, an...

Embodiment 1

[0037] A method for preparing a modified stainless steel screen with super-hydrophilic / underwater super-oleophobic properties that can be used for the treatment of oily wastewater, comprising the following steps:

[0038] (1) dissolving styrene maleic anhydride copolymer with a molecular weight of 1600 g / mol in N,N-dimethylformamide to prepare a 2% polymer solution;

[0039] (2) dissolving polyethyleneimine with a molecular weight of 10000 g / mol in deionized water to prepare a 2% polymer solution;

[0040] (3) Immerse the stainless steel mesh in the styrene maleic anhydride copolymer solution, stay for 10s, take out the drained solution, continue to immerse it in the polyethyleneimine solution, stay for 30min, take out the drained solution, and wash it with water.

Embodiment 2

[0042] A preparation method of a modified nylon mesh having super-hydrophilic / underwater super-oleophobic properties and can be used for the treatment of oily wastewater, comprising the following steps:

[0043] (1) dissolving a styrene maleic anhydride copolymer with a molecular weight of 1700 g / mol in tetrahydrofuran to prepare a 2% polymer solution;

[0044] (2) dissolving polyethyleneimine with a molecular weight of 5000 g / mol in deionized water to prepare a 2% polymer solution;

[0045] (3) Immerse the nylon mesh in the styrene maleic anhydride copolymer solution, stay for 20s, take out the drained solution, continue to immerse it in the polyethyleneimine solution, stay for 60min, take out the drained solution, and wash it with water.

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Abstract

The invention discloses a method for rapidly, simply and conveniently preparing a superhydrophilic / subaqueous superoleophobic modified substrate material by utilizing a commercial polymer. The methodis specifically implemented through the following method and steps that a styrene maleic anhydride copolymer solution with a certain concentration and a polyethyleneimine solution with a certain concentration are prepared separately; a substrate material is soaked in the styrene maleic anhydride copolymer solution for a certain time, taken out and drained, then soaked in the polyethyleneimine solution for a certain time, taken out and drained, and then cleaned with water, and the modified substrate material with superhydrophilic / subaqueous superoleophobic characteristics is obtained. The disclosed method greatly improves the superhydrophilic / subaqueous superoleophobic modification of the substrate material, and is suitable for separation of emulsified oil.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a method for quickly and easily preparing a superhydrophilic / underwater superoleophobic modified base material by using a commercial polymer. Background technique [0002] Growing energy consumption has created a very large demand for the petrochemical industry, which is estimated to have reached 88 billion gallons of petroleum products annually throughout the world. At present, because many oil fields in the world are already in the middle and late stages of exploitation, the crude oil produced has high water content; crude oil pollution accidents caused by leakage from drilling platforms, oil tanks or oil tanker transportation occur frequently every year; oil refining, oil processing, edible oil Oil generation, metalworking, and other related industries generate large amounts of oily wastewater. Oily wastewater can alter soil physicochemical properties, affect drinking water q...

Claims

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Application Information

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IPC IPC(8): D06M15/233D06M15/61C08J9/42B01D69/02B01D71/34B01D61/14B01D67/00B01D39/10D06M101/06D06M101/34C08L27/16
CPCD06M15/233D06M15/61C08J9/42B01D69/02B01D71/34B01D61/147B01D67/0088B01D39/10D06M2101/06D06M2101/34C08J2327/16B01D2325/36B01D2239/0421B01D2239/10
Inventor 张干伟邢佳乐贾新应白仁碧沈舒苏周晓吉杨晶晶
Owner SUZHOU UNIV OF SCI & TECH
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