High-flux ceramic filter membrane and preparation method thereof

A ceramic filter membrane, high-flux technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problem of low bonding strength between the filter layer and the support, difficult control of membrane thickness and membrane pore size, and pore size distribution Problems such as greater influence of fibers, to achieve the effects of easy production, accurate control of thickness, and improved flux

Inactive Publication Date: 2020-12-08
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have some shortcomings, such as the ubiquitous membrane thickness and membrane pore size are not easy to control, and the aforementioned firing of the sacrificial intermediate layer is likely to cause cracking of the filter layer, and the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-flux ceramic filter membrane and preparation method thereof
  • High-flux ceramic filter membrane and preparation method thereof
  • High-flux ceramic filter membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040]Example 1

[0041]1) Apply the PVB solution (concentration 5%, solvent-free ethanol) to the surface of the surface of the surface, and the thickness of the coating film is 15 μm, and the high molecular bottom film is obtained at room temperature for 30 min.

[0042]2) Will D50It was 760 nm alumina powder (9 g), deionized water (30g), silicone oil-based diffused agent (0.12 g), fluorocarbon surfactant (0.18 g) and PAA dispersant (0.36 g) mixed with ball milling for 15 min. Then the concentration of 10% by weight of the PVA solution (21 g) was added, ball milling for 15 min and vacuum, resulting in a ceramic film coating liquid;

[0043]3) Apply the ceramic film coating liquid to the high molecular bottom film, the thickness of 25 μm; after drying at room temperature, a ceramic film transfer film having a double layer structure is obtained;

[0044]4) Separate the ceramic membrane transfer film from the glass plate, and the ceramic support is wetted and then prepared; the ceramic support us...

Example Embodiment

[0047]Example 2

[0048]1) The PVB solution (concentration 5 wt%, solvent is anhydrous ethanol) is applied to the surface of the glass plate with an automatic coating machine, and the thickness of the coating film is 15 μm, and the polymer base film is obtained at room temperature for 30 min.

[0049]2) Will D50760 nm alumina powder (9 g), deionized water (30g), silicone-based diffuser (model SN-1340, Japan Novo) (0.12 g), fluorocarbon surfactant (model FS-60, Shanghai Brand Industrial Co., Ltd.) (0.18 g) and PAA dispersing agent (0.36 g) were mixed with ball milling for 15 min, then the concentration of 10% by weight of PVA solution (21 g) was added, ball milling for 15 min and vacuum, resulting in a ceramic membrane coating film;

[0050]3) Apply the ceramic film coating liquid to the high molecular bottom film with an automated coating machine, and the coated thickness is 40 μm, and after drying at room temperature for 12 h, a ceramic film transfer film having a double layer structure is ...

Example Embodiment

[0054]Example 3

[0055]1) Apply the PVB solution (5% concentration, solvent-free ethanol) to the surface of the surface of the glass plate, the thickness of the coating film is 15 μm, and the high molecular bottom film is obtained at room temperature for 30 min.

[0056]2) Will D50It is 500 nm zirconia powder (10.2 g), deionized water (25.8 g), silicone-based diffuser (0.12 g), fluorocarbon surfactant (0.18 g) and PAA dispersing agent (0.36 g) mixed with ball milling for 15 min Then, then the concentration of 10% PVA solution (24 g) was added, and the ball mill was foundated for 15 min and evacuated to give a ceramic film coating liquid;

[0057]3) Apply the ceramic film coating liquid to the automatic coating machine to apply a thickness of 25 μm, and a ceramic film transfer film having a double layer structure is obtained after drying at room temperature for 12 h;

[0058]4) Separate the transfer film from the glass plate, and the ceramic support is wetted after retaining; the ceramic suppor...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of ceramic filter membrane materials, and discloses a high-flux ceramic filter membrane and a preparation method thereof. The method comprises the following steps: 1), processing a polymer material into a membrane to obtain a polymer base membrane; 2), uniformly mixing ceramic particles, a binder and water to obtain a ceramic membrane coating solution;3), coating the polymer base membrane with the ceramic membrane coating solution , and performing drying to obtain a ceramic membrane transfer membrane; and 4), bonding a membrane layer formed by theceramic membrane coating solution in the ceramic membrane transfer membrane with a support body, performing drying, discharging glue, and performing sintering to obtain the ceramic filter membrane. According to the method, the pore diameter and the thickness of the filter membrane can be accurately controlled, membrane layer infiltration is avoided, the membrane flux is improved, and the defects of the ceramic filter membrane are reduced. The ceramic filter membrane obtained by the method provided by the invention has high membrane flux, the filter layer has no cracks, and the filter layer andthe support body have good bonding strength. The method is simple and easy to produce.

Description

technical field [0001] The invention belongs to the technical field of ceramic filter membrane materials, and in particular relates to a high-throughput ceramic filter membrane and a preparation method thereof. Background technique [0002] Ceramic filter membrane has the characteristics of high thermal stability, corrosion resistance, long life, etc. It has many applications in food processing industry, industrial wastewater treatment, etc., and has the potential to treat urban sewage and prepare drinking water on a large scale. Commercial ceramic filter membranes are mainly made of α-Al 2 o 3 Material preparation support, Al 2 o 3 , ZrO 2 or TiO 2 Prepare the filter layer. However, the preparation cost of ceramic filter membrane is relatively high, which limits its wide application. The flux of the ceramic filter membrane is one of its key properties. Under the same working pressure and time, the greater the flux of the ceramic filter membrane, the higher the filtra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D71/02B01D69/02B01D67/00
CPCB01D67/0039B01D69/02B01D71/025
Inventor 吴建青尹晓琴
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap