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A kind of hydrophobic ceramic composite membrane and preparation method thereof

A ceramic composite membrane, ceramic membrane technology, applied in the field of membrane separation, can solve the problem of easy falling off of the hydrophobic layer, and achieve the effects of not easily polluted by oil, good lipophilic properties, and good hydrophobic properties

Active Publication Date: 2019-09-06
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of hydrophobic ceramic composite membrane, to solve the problem that the hydrophobic layer on the ceramic composite membrane in the prior art is easy to fall off

Method used

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  • A kind of hydrophobic ceramic composite membrane and preparation method thereof
  • A kind of hydrophobic ceramic composite membrane and preparation method thereof
  • A kind of hydrophobic ceramic composite membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The hydrophobic ceramic composite membrane of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer, a hydrophilic polymer layer, a binder layer, and a hydrophobic polymer layer from the inside to the outside; the ceramic base film, The mass ratio of silane coupling layer, adhesive layer, and hydrophobic polymer layer is 1:0.001:0.01:0.001:0.05; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethyl oxysilane; the hydrophilic polymer layer is polyimide; the adhesive layer is propyltrimethoxysilane coupling agent; the hydrophobic polymer layer is polytetrafluoroethylene.

[0047] The preparation method of the hydrophobic ceramic composite membrane of the present embodiment comprises the following steps:

[0048] 1) Put a commercial aluminum oxide ceramic membrane with a size of 1cm×1cm (mass 2g) into a beaker filled with acetone, c...

Embodiment 2

[0052] The hydrophobic ceramic composite membrane of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer, a hydrophilic polymer layer, a binder layer, and a hydrophobic polymer layer from the inside to the outside; the ceramic base film, The mass ratio of silane coupling layer, adhesive layer, and hydrophobic polymer layer is 1:0.005:0.05:0.006:0.1; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethyl oxysilane; the hydrophilic polymer layer is polyimide; the binder layer is stearic acid; the hydrophobic polymer layer is polytetrafluoroethylene.

[0053] The preparation method of the hydrophobic ceramic composite membrane of the present embodiment comprises the following steps:

[0054] 1) Put a commercial aluminum oxide ceramic membrane with a size of 1cm×1cm (mass 2g) into a beaker filled with acetone, clean it in an ultrasonic cle...

Embodiment 3

[0058] The hydrophobic ceramic composite membrane of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer, a hydrophilic polymer layer, a binder layer, and a hydrophobic polymer layer from the inside to the outside; the ceramic base film, The mass ratio of silane coupling layer, adhesive layer, and hydrophobic polymer layer is 1:0.003:0.03:0.005:0.07; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethyl Oxysilane; the hydrophilic polymer layer is polyimide; the adhesive layer is polyvinyl alcohol; the hydrophobic polymer layer is polytetrafluoroethylene.

[0059] The preparation method of the hydrophobic ceramic composite membrane of the present embodiment comprises the following steps:

[0060] 1) Put a commercial aluminum oxide ceramic membrane with a size of 1cm×1cm (mass 2g) into a beaker filled with acetone, clean it in an ultras...

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Abstract

The invention relates to a hydrophobic ceramic composite membrane and a preparation method thereof, belonging to the technical field of membrane separation. The hydrophobic ceramic composite membrane of the present invention includes a ceramic base membrane, and the surface of the ceramic base membrane is sequentially provided with a silane coupling layer, an adhesive layer, and a hydrophobic polymer layer from the inside to the outside; the hydrophobic polymer layer is polytetrafluoroethylene Ethylene; the mass ratio of the ceramic base film, silane coupling layer, adhesive layer, and hydrophobic polymer layer is 1:0.001-0.005:0.01-0.05:0.001-0.01:0.05-0.1. In the hydrophobic ceramic composite membrane material of the present invention, the polymer, the adjacent layer and the carrier are covalently connected together, the polymer is not easy to fall off from the carrier, the coating material has high stability, and is more suitable for industrial use.

Description

technical field [0001] The invention relates to a hydrophobic ceramic composite membrane and a preparation method thereof, belonging to the technical field of membrane separation. Background technique [0002] The annual discharge of industrial wastewater in the world is more than 4 million tons, causing nearly half of the water resources available for human use on the earth to be polluted. China's industrial wastewater discharge accounts for about 8.6% of the global discharge, and the wastewater pollution situation is severe. Among industrial wastewater, oily wastewater, that is, emulsified oily wastewater, has the largest discharge and comes from a wide range of sources, such as submarine crude oil spills, petrochemicals, fine chemicals, machinery manufacturing and processing, leather, food processing, medicine, and even household life. Oil pollution not only causes a great waste of oil resources, but also poses a serious threat to the environment. How to effectively rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/76B01D69/12B01D69/02B01D67/00C02F1/44C02F1/40
Inventor 彭淑鸽马军营常凯潘炳力牛青山
Owner HENAN UNIV OF SCI & TECH
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