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Preparation method of multilayer foamed nickel composite material capable of being used for water-in-oil emulsion separation

A water-in-oil emulsion and composite material technology, which is applied in the field of three-dimensional water-in-oil emulsion separation membrane preparation, can solve membrane fouling and other problems, and achieve easy preparation process, excellent chemical stability and mechanical stability, and high separation efficiency Effect

Pending Publication Date: 2021-10-29
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when membrane technology is used to separate oily wastewater, in addition to optimizing the separation efficiency and flux, it is also necessary to solve the problem of membrane fouling caused by the adsorption of oil droplets and other small organic molecules on the membrane surface.

Method used

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  • Preparation method of multilayer foamed nickel composite material capable of being used for water-in-oil emulsion separation
  • Preparation method of multilayer foamed nickel composite material capable of being used for water-in-oil emulsion separation
  • Preparation method of multilayer foamed nickel composite material capable of being used for water-in-oil emulsion separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1). Preliminary preparation for the experiment:

[0033] The nickel foam was cut to a size of 3×3cm and ultrasonically cleaned in ethanol for 30 minutes, then washed with deionized water and dried in an oven for later use.

[0034] (2). Suspension preparation:

[0035] Add 0.1 g of carbon nanoparticles (CNPs), 1 g of polydimethylsiloxane (PDMS) and 0.1 g of curing agent (184 silicone rubber) into 50 g of n-hexane, and use a frequency of 30 KHz for 1 h to form a stable Suspended and stored for later use.

[0036] (3). Preparation of single-layer nickel foam composite material:

[0037] Immerse the foamed nickel flakes cleaned and dried in the step in the suspension, and place at room temperature until the solvent evaporates, and the mixture of carbon nanoparticles (CNPs) and polydimethylsiloxane (PDMS) is uniformly deposited on the interior and surface of the foamed nickel . Then place it in a muffle furnace at 100° C. for 1 hour to make it solidify, and then a sing...

Embodiment 2

[0043] (1). Preliminary preparation for the experiment:

[0044] The nickel foam was cut to a size of 3×3cm and ultrasonically cleaned in ethanol for 30 minutes, then washed with deionized water and dried in an oven for later use.

[0045] (2). Suspension preparation:

[0046]Add 0.1 g of carbon nanoparticles (CNPs), 1 g of polydimethylsiloxane (PDMS) and 0.1 g of curing agent (184 silicone rubber) into 50 g of n-hexane, and use a frequency of 30 KHz for 1 h to form a stable Suspended and stored for later use.

[0047] (3). Preparation of single-layer nickel foam composite material:

[0048] Immerse the foamed nickel flakes cleaned and dried in the step in the suspension, and place at room temperature until the solvent evaporates, and the mixture of carbon nanoparticles (CNPs) and polydimethylsiloxane (PDMS) is uniformly deposited on the interior and surface of the foamed nickel . Then place it in a muffle furnace at 100° C. for 1 hour to make it solidify, and then a singl...

Embodiment 3

[0054] (1). Preliminary preparation for the experiment:

[0055] The nickel foam was cut to a size of 3×3cm and ultrasonically cleaned in ethanol for 30 minutes, then washed with deionized water and dried in an oven for later use.

[0056] (2). Suspension preparation:

[0057] Add 0.1 g of carbon nanoparticles (CNPs), 1 g of polydimethylsiloxane (PDMS) and 0.1 g of curing agent (184 silicone rubber) into 50 g of n-hexane, and use a frequency of 30 KHz for 1 h to form a stable Suspended and stored for later use.

[0058] (3). Preparation of single-layer nickel foam composite material:

[0059] Immerse the foamed nickel flakes cleaned and dried in the step in the suspension, and place at room temperature until the solvent evaporates, and the mixture of carbon nanoparticles (CNPs) and polydimethylsiloxane (PDMS) is uniformly deposited on the interior and surface of the foamed nickel . Then place it in a muffle furnace at 100° C. for 1 hour to make it solidify, and then a sing...

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Abstract

The invention discloses a preparation method of a multilayer foamed nickel composite material capable of being used for water-in-oil emulsion separation. According to the invention, spongy porous foamed nickel is taken as a carrier, super-hydrophobic nano carbon powder as a filler and hydrophobic polydimethylsiloxane as a binder, a single-layer super-hydrophobic foamed nickel composite material is prepared through a simple suspension immersion method and a heating curing method, and then a press is used for pressing the single layer into a multi-layer composite material with high porosity and a multi-stage coarse structure for water-in-oil emulsion separation. The surface of the micro-nano structure has a super-hydrophobic characteristic in air and under oil, and in addition, a multi-layer efficient water-in-oil emulsion separation membrane prepared from the multi-layer composite material shows excellent chemical stability, mechanical tensile resistance and wear resistance in the efficient emulsion separation process and can be repeatedly used for multiple times.

Description

technical field [0001] The invention belongs to the technical field of preparation of a three-dimensional water-in-oil emulsion separation membrane, and in particular relates to a method for preparing a multilayer superhydrophobic nickel foam composite separation material with chemical stability and mechanical stability. Background technique [0002] With the development of society, a large amount of oily wastewater will be produced in industrial manufacturing and daily life, and untreated oily wastewater will cause serious pollution to the environment. Therefore, separating oil-water mixtures, especially emulsified oil-water mixtures, is a serious and A challenge that must be overcome. Membrane technology is considered to be the most effective method for treating oily wastewater because of its high separation efficiency and simple operation process. However, when membrane technology is used to separate oily wastewater, in addition to optimizing the separation efficiency an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 郭志光王忆
Owner HUBEI UNIV
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