Polymer-based ceramic ultrafiltration composite coating material as well as preparation method and application thereof

A composite coating and polymer technology, applied in the field of membrane separation, can solve the problems of unfavorable separation membrane service life, low strength, weak binding force, etc. Effect

Active Publication Date: 2017-12-29
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding force between silicon dioxide and silane of the above-mentioned ceramic membrane is weak, and the strength

Method used

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  • Polymer-based ceramic ultrafiltration composite coating material as well as preparation method and application thereof
  • Polymer-based ceramic ultrafiltration composite coating material as well as preparation method and application thereof
  • Polymer-based ceramic ultrafiltration composite coating material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The polymer-based ceramic ultrafiltration composite coating material of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer and a polyimide layer from the inside to the outside; the ceramic base film, the silane coupling layer 1. The mass ratio of the polyimide layer is 1:0.001:0.01; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethoxysilane.

[0052] The preparation method of the polymer-based ceramic ultrafiltration composite coating material of the present embodiment comprises the following steps:

[0053] 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 filled with absolute ethanol, Wash in an ultrasonic cleaner for 5 minutes, take it out and put it into a beaker fill...

Embodiment 2

[0056] The polymer-based ceramic ultrafiltration composite coating material of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer and a polyimide layer from the inside to the outside; the ceramic base film, the silane coupling layer 1. The mass ratio of the polyimide layer is 1:0.005:0.05; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethoxysilane.

[0057] The preparation method of the polymer-based ceramic ultrafiltration composite coating material 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 10 minutes, take it out and put it into a beaker filled with absolute ethanol, Clean in an ultrasonic cleaner for 10 minutes, take it out and put it into a beaker f...

Embodiment 3

[0061] The polymer-based ceramic ultrafiltration composite coating material of this embodiment includes a ceramic base film, and the surface of the ceramic base film is sequentially provided with a silane coupling layer and a polyimide layer from the inside to the outside; the ceramic base film, the silane coupling layer 1. The mass ratio of the polyimide layer is 1:0.003:0.03; the ceramic base film is aluminum oxide ceramic film, and the silane coupling layer is γ-aminopropyltrimethoxysilane.

[0062] The preparation method of the polymer-based ceramic ultrafiltration composite coating material of the present embodiment comprises the following steps:

[0063] 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 with absolute ethanol, Wash in an ultrasonic cleaner for 7 minutes, take it out and put it into a beaker fill...

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Abstract

The invention relates to a polymer-based ceramic ultrafiltration composite coating material as well as a preparation method and application thereof, and belongs to the technical field of membrane separation. The polymer-based ceramic ultrafiltration composite coating material comprises a ceramic base membrane, wherein a silane coupling layer is arranged on the surface of the ceramic base membrane; the surface of the silane coupling layer is provided with a polyimide layer; the mass ratio of the ceramic base membrane to the silane coupling layer to the polyimide layer is 1 to (0.001 to 0.005) to (0.01 to 0.05). The polymer-based ceramic ultrafiltration composite coating material has the advantages that polyimide is used as a separation layer; inorganic ingredients such as graphene oxide or silver ions are used as a modification layer; the polyimide is subjected to covalent grafting onto a ceramic membrane surface through in situ polymerization; the graphene oxide or silver ions are covalently distributed in the grid structure of the polyimide membrane layer; the separation efficiency and the mechanical property of the ceramic membrane are improved; good antibacterial performance is given to the separation membrane; meanwhile, the loss of antibacterial agent silver ions can be effectively inhibited.

Description

technical field [0001] The invention relates to a polymer-based ceramic ultrafiltration composite coating material and its preparation method and application, 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. However, the currently used separation membranes have poor physical, chemical and thermal stability and short service life, which limits the further promotion and application of separation membranes in the field of water treatment. Therefore, it is meaningful to research and develop inorganic ceramic membranes with more significant performance advantages. major. The application research of ceramic membrane technology is mainly concentrated in the field of industrial wastewater treatment, and the application in drinking water treatment is still in its infancy. [0003] ...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D67/00B01D69/02B01D69/12C02F1/44C02F1/50
CPCB01D67/0079B01D69/02B01D69/12B01D71/024B01D2325/48C02F1/44C02F1/50
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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