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Preparation method of polyethyleneimine oil-water separation composite membrane material

A polyethyleneimine oil and polyethyleneimine technology, which is applied in the field of preparation of oil-water separation materials, can solve the problems of difficulty in flammable storage, high cost of sulfur treatment, environmental pollution, etc., so as to increase the anti-oil pollution performance and improve the clustering performance. , good repeatability

Active Publication Date: 2021-04-13
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing cost of sulfur is high, and its flammability makes its storage more difficult, and if it is accidentally leaked, it will pollute the environment

Method used

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  • Preparation method of polyethyleneimine oil-water separation composite membrane material
  • Preparation method of polyethyleneimine oil-water separation composite membrane material
  • Preparation method of polyethyleneimine oil-water separation composite membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a. After adjusting the pH of 98mL deionized water to 4 with glacial acetic acid, add 2mL of silane coupling agent KH-550 and hydrolyze it at room temperature for 2 hours to obtain an aqueous solution containing silane coupling agent KH-550. Put the basalt fiber fabric in Put it into an aqueous solution containing silane coupling agent KH-550, soak it at room temperature for 2 hours, and then dry it at a temperature of 120°C for 1 hour to obtain a basalt fiber fabric with amino groups on the surface;

[0028] b. Add 2.5 g of polyethyleneimine with a molecular weight of 1800 to 10 mL of N-methylpyrrolidone solution at room temperature, and magnetically stir until fully dissolved to obtain N-methylpyrrolidone solution containing polyethyleneimine. Soak the dried basalt fiber fabric in N-methylpyrrolidone solution containing polyethyleneimine for 20min, then pick up the fabric and remove excess solution;

[0029] c. Add 0.25 g of elemental sulfur into 10 mL of N-methylpyrro...

Embodiment 2

[0031] a. After adjusting the pH of 98mL deionized water to 4 with glacial acetic acid, add 2mL of silane coupling agent KH-550 and hydrolyze it at room temperature for 2 hours to obtain an aqueous solution containing silane coupling agent KH-550. Put the basalt fiber fabric in Put it into an aqueous solution containing silane coupling agent KH-550, soak it at room temperature for 2 hours, and dry it at 120°C for 1 hour to obtain a basalt fiber fabric with amino groups on the surface;

[0032] b. Add 0.5 g of polyethyleneimine with a molecular weight of 1800 to 10 mL of N-methylpyrrolidone solution at room temperature, and magnetically stir until fully dissolved to obtain N-methylpyrrolidone solution containing polyethyleneimine. Soak the dried basalt fiber fabric in N-methylpyrrolidone solution containing polyethyleneimine for 20min, then pick up the fabric and remove excess solution;

[0033] c. Add 0.25 g of elemental sulfur into 10 mL of N-methylpyrrolidone solution, heat ...

Embodiment 3

[0035] a. After adjusting the pH of 98mL deionized water to 4 with glacial acetic acid, add 2mL of silane coupling agent KH-550 and hydrolyze it at room temperature for 2 hours to obtain an aqueous solution containing silane coupling agent KH-550. Put the basalt fiber fabric in Put it into an aqueous solution containing silane coupling agent KH-550, soak it at room temperature for 2 hours, and dry it at 120°C for 1 hour to obtain a basalt fiber fabric with amino groups on the surface;

[0036]b. Add 1.0 g of polyethyleneimine with a molecular weight of 1800 to 10 mL of N-methylpyrrolidone solution at room temperature, and magnetically stir until fully dissolved to obtain N-methylpyrrolidone solution containing polyethyleneimine. Soak the dried basalt fiber fabric in N-methylpyrrolidone solution containing polyethyleneimine for 20min, then pick up the fabric and remove excess solution;

[0037] c. Add 0.25 g of elemental sulfur into 10 mL of N-methylpyrrolidone solution, heat a...

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Abstract

The invention discloses a preparation method of a polyethyleneimine oil-water separation composite membrane material. The method comprises the following steps: taking basalt fiber fabric as a substrate material, taking polyethyleneimine as a functional material, and taking a mechanism that elemental sulfur can react with polyethyleneimine and amino on a silane coupling agent KH-550 as a mechanism so as to obtain the oil-water separation material with a function of selectively separating an oil-in-water emulsion. According to the method, the silane coupling agent KH-550 is used for endowing amino groups to the basalt fiber fabric, then a soaking method is adopted for coating the surface of the basalt fiber fabric with the polyethyleneimine, and finally the elemental sulfur is used for fixing the polyethyleneimine to the surface of the basalt fiber fabric, so that the composite membrane material is obtained. Polyethyleneimine modification fully changes the wettability of the fiber fabric under water, and provides a favorable premise for the material to separate the oil-water emulsion under the action of gravity. The composite membrane material is mainly used for treating an emulsified oil-water mixture, and can be used for effectively separating various oil-in-water emulsions prepared by taking an organic solvent and a commercial oil product as oil phases.

Description

technical field [0001] The invention relates to a preparation method of an oil-water separation material. Specifically, polyethyleneimine, basalt fiber, and glass fiber fabric are used as base materials, and the coupling reaction between elemental sulfur and amino groups and carboxyl, amino, and isonitrile groups is used respectively. , to prepare a composite membrane material with demulsification and oil-water separation properties. Background technique [0002] Frequent oil spill accidents in the process of oil exploration and transportation and a large amount of oily sewage produced to meet human production and living needs have brought serious disasters to the ecological environment and human health. Therefore, it is imminent to develop efficient oil-water separation materials and technologies. At present, oil-water separation materials mainly have three geometric shapes: powder, omentum and porous. According to the type of oil, it can be divided into slick oil, disper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D71/60B01D67/00B01D17/02
CPCB01D69/12B01D71/60B01D67/0081B01D17/085B01D2325/38
Inventor 艾克热木·牙生张钰荣岳秀马鹏程孟弼伟
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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