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A polymer-based ceramic ultrafiltration composite coating material and its preparation method and application

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., and achieve improved separation efficiency and mechanical properties, low production cost, and excellent mechanical properties Effect

Active Publication Date: 2019-10-22
HENAN UNIV OF SCI & TECH
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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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  • A polymer-based ceramic ultrafiltration composite coating material and its preparation method and application
  • A polymer-based ceramic ultrafiltration composite coating material and its preparation method and application
  • A polymer-based ceramic ultrafiltration composite coating material and its preparation method and application

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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 and its preparation method and application, belonging to the technical field of membrane separation. The polymer-based ceramic ultrafiltration composite coating material of the present invention comprises a ceramic base film, the surface of the ceramic base film is provided with a silane coupling layer, and the surface of the silane coupling layer is provided with a polyimide layer; the ceramic base film, The mass ratio of the silane coupling layer to the polyimide layer is 1:0.001-0.005:0.01-0.05. The polymer-based hybrid ceramic ultrafiltration composite coating material of the present invention uses polyimide as the separation layer, and inorganic components such as graphene oxide or silver ions as the modification layer, and the polyimide is covalently bonded by in-situ polymerization. Branched to the surface of the ceramic membrane, graphene oxide or silver ions are covalently distributed in the network structure of the polyimide membrane layer, which not only improves the separation efficiency and mechanical properties of the ceramic membrane, but also endows the separation membrane with good antibacterial properties. At the same time, it can effectively inhibit the loss of antibacterial agent silver ions.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D67/00B01D69/02B01D69/12C02F1/44C02F1/50
Inventor 彭淑鸽马军营常凯潘炳力牛青山
Owner HENAN UNIV OF SCI & TECH