Alumina plate ceramic membrane with superhydrophobic surface and preparation method thereof

A super-hydrophobic surface, ceramic membrane technology, applied in the field of ceramics, can solve the problems of membrane swelling, aging, poor stability, etc., and achieve the effect of expanding the application range and reducing the sintering temperature

Inactive Publication Date: 2017-11-17
WUHU BAOYI AMUSEMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the polymer material itself, the membrane is prone to swelling, aging, irreversible deformation, and poor stability in harsh environments.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The aluminum oxide flat ceramic membrane with super-hydrophobic surface of the present embodiment is prepared by the following steps:

[0020] (1) Mix kaolin and zinc oxide at a mass ratio of 1:0.9, dry in a vacuum oven at 90°C for 6 hours, then wet ball mill, dry, crush and sieve to obtain a 250-mesh mixed powder for use;

[0021] (2) Put alumina micropowder and mixed powder in a reaction vessel at a mass ratio of 1:0.03, add deionized water equivalent to 20 times the weight of alumina micropowder, and ultrasonically oscillate for 60 minutes to fully disperse it, while stirring Add titanium sulfate solution dropwise, stir magnetically at room temperature for 40 minutes, then add ammonia water dropwise to adjust the pH value of the system to 10, continue magnetically stirring for 3 hours, filter, wash, and dry to obtain surface-modified alumina micropowder;

[0022] (3) Mix polyethersulfone, polyvinylpyrrolidone and 1-methyl-2-pyrrolidone at a mass ratio of 1:1.8:8, pla...

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PUM

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Abstract

The invention relates to an alumina plate ceramic membrane with a superhydrophobic surface. The preparation method of the alumina plate ceramic membrane is characterized by: firstly mixing alumina micro powder with a fluxing agent, and taking titanium sulfate as the precursor to modify the surfaces of alumina particles; then employing phase transformation tape casting and high temperature sintering to prepare a ceramic membrane; and finally using microwave assisted treatment on the ceramic membrane, and conducting surface grafting of fluorosiloxane, thus obtaining the alumina plate ceramic membrane with a superhydrophobic surface. The alumina plate ceramic membrane provided by the invention is grafted with fluorosiloxane on the surface, realizes modification from hydrophilcity to hydrophobicity, and expands the application range of ceramic membrane.

Description

technical field [0001] The invention belongs to the field of ceramics, in particular to an alumina flat ceramic film with a super-hydrophobic surface and a preparation method thereof. Background technique [0002] With the rapid development of membrane separation technology, various membrane materials are widely used in food, medicine, biochemical and other fields, and people's requirements for membrane structure and performance are also constantly increasing. At present, the separation membranes used in industrial production and daily life are mostly polymer materials, including polytetrafluoroethylene, polypropylene, etc., which are polymers of organic monomers. This type of membrane has the advantages of fast curing and simple preparation. However, due to the characteristics of the polymer material itself, the membrane is prone to swelling, aging, irreversible deformation, and poor stability in harsh environments. In contrast, ceramic membranes have attracted the attenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/628C04B35/64C04B38/00C04B41/84B01D67/00B01D69/12B01D71/02
CPCB01D67/0079B01D69/12B01D71/02B01D2325/38C04B35/10C04B35/62813C04B35/64C04B38/00C04B41/009C04B41/4905C04B41/84C04B2111/00793C04B2235/349C04B2235/448C04B41/0072
Inventor 张庆
Owner WUHU BAOYI AMUSEMENT EQUIP
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