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Highly-permeable ultrafiltration composite ceramic coating film and preparation method thereof

A composite ceramic and high-permeability technology, which is applied in the field of membrane separation, can solve the problems of unfavorable separation membrane service life, weak binding force, and low strength, and achieve the effects of low production cost, improved pore size and structure, and good comprehensive performance

Active Publication Date: 2017-12-29
佛山市维宁新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the bonding force between silicon dioxide and silane of the above-mentioned ceramic membrane is weak, and the strength after the combination of the two is not high, which is not conducive to improving the service life of the separation membrane.

Method used

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  • Highly-permeable ultrafiltration composite ceramic coating film and preparation method thereof
  • Highly-permeable ultrafiltration composite ceramic coating film and preparation method thereof
  • Highly-permeable ultrafiltration composite ceramic coating film and preparation method thereof

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Effect test

Embodiment 1

[0040] The high permeable ultrafiltration composite ceramic coating membrane of this embodiment comprises a ceramic base membrane, and the surface of the ceramic base membrane is sequentially provided with a silane coupling layer, a hyperbranched polymer layer, a polyimide layer, a ceramic base membrane, a silane The mass ratio of the coupling layer, hyperbranched polymer layer, and polyimide layer is 1:0.001:0.002:0.01; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethyl Oxysilane, hyperbranched polymer layer is 1 generation polyamido-amine.

[0041] The preparation method of the high permeability ultrafiltration composite ceramic coating membrane of the present embodiment comprises the following steps:

[0042] 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 cleaner for 5 minutes, take it out and put it into a beaker fill...

Embodiment 2

[0048] The high permeable ultrafiltration composite ceramic coating membrane of this embodiment comprises a ceramic base membrane, and the surface of the ceramic base membrane is sequentially provided with a silane coupling layer, a hyperbranched polymer layer, a polyimide layer, a ceramic base membrane, a silane The mass ratio of the coupling layer, hyperbranched polymer layer, and polyimide layer is 1:0.005:0.002:0.05; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethyl Oxysilane, hyperbranched polymer layer is 1 generation polyamido-amine.

[0049] The preparation method of the high permeability ultrafiltration composite ceramic coating membrane of the present embodiment comprises the following steps:

[0050] 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 cleaner for 10 minutes, take it out and put it into a beaker fil...

Embodiment 3

[0056] The high permeable ultrafiltration composite ceramic coating membrane of this embodiment comprises a ceramic base membrane, and the surface of the ceramic base membrane is sequentially provided with a silane coupling layer, a hyperbranched polymer layer, a polyimide layer, a ceramic base membrane, a silane The mass ratio of coupling layer, hyperbranched polymer layer, and polyimide layer is 1:0.003:0.002:0.03; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyl trimethyl Oxysilane, hyperbranched polymer layer is 1 generation polyamido-amine.

[0057] The preparation method of the high permeability ultrafiltration composite ceramic coating membrane of the present embodiment comprises the following steps:

[0058] 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 cleaner for 7 minutes, take it out and put it into a beaker filled ...

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Abstract

The invention relates to a highly-permeable ultrafiltration composite ceramic coating film and a preparation method thereof, and belongs to the technical field of film separation. The highly-permeable ultrafiltration composite ceramic coating film comprises a ceramic base film, wherein the surface of the ceramic base film is sequentially provided with a silane coupling layer, a polyimide layer from interior to exterior; the mass ratio of the ceramic base film to the silane coupling layer to the polyimide layer is 1:(0.001 to 0.005):(0.01 to 0.1). The highly-permeable ultrafiltration composite ceramic coating film has the advantages that hyperbranched polyamide-amide is used as a pore passage building template, polyimide is used as a separating film, and the polyimide is grafted to the surface of the ceramic film in a covalent way by in-situ polymerizing, so that the composite separating film can simultaneously reach the high-selectivity and high-permeability advantages of a polymer film and high temperature-resistant and corrosion-resistant advantages of an inorganic film; the pore passage size and structure of the commercial ceramic film are improved, and the good permeability of the separating film is realized.

Description

technical field [0001] The invention relates to a high-permeability ultrafiltration composite ceramic coating membrane and a preparation method thereof, belonging to the technical field of membrane separation. Background technique [0002] Membrane separation technology, as an important drinking water safety guarantee technology, has broad application prospects in the field of drinking water treatment. Compared with traditional organic separation membranes, ceramic separation membranes have many excellent properties such as high temperature resistance, acid and alkali resistance, and high mechanical strength, and have become one of the membrane materials with rapid development and great application prospects in the membrane field. However, the high cost has always been a major obstacle to the commercialization of ceramic membranes. In recent years, with the development of economies of scale manufacturing, the life cycle cost of ceramic membranes has gradually reached the ze...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/78B01D69/12B01D67/00B01D61/14
CPCB01D61/145B01D67/0079B01D69/12B01D71/78
Inventor 彭淑鸽柴元武常凯马军营牛青山
Owner 佛山市维宁新材料有限公司
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