Preparation method for temperature sensitive response type intelligent ceramic composite membrane and product

A ceramic composite membrane and ceramic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problem of low mechanical strength and achieve high mechanical strength, large permeation flux, and good stability Effect

Inactive Publication Date: 2009-09-23
HUAIYIN TEACHERS COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a temperature-sensitive response type intelligent ceramic composite membrane preparation method and product, using ceramic membrane as the base membrane, N-isopropylacrylamide as the functional monomer, prepared by chemical grafting A temperature-sensitive and responsive smart ceramic composite membrane, and the prepared smart ceramic composite membrane can not only overcome the shortcomings of low mechanical strength of the smart membrane prepared with an organic membrane as the base membrane, but also has good chemical stability, long service life, and easy detoxification Cleaning while still having the environmental sensitivity of the grafted monomers

Method used

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  • Preparation method for temperature sensitive response type intelligent ceramic composite membrane and product

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Experimental program
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Effect test

Embodiment 1

[0025] The temperature-sensitive and responsive smart ceramic composite membrane was prepared according to the following steps:

[0026] (1) Acid treatment membrane: the α-Al 2 o 3 The membrane is immersed in an aqueous solution with a pH of 3 for 24 hours, and then the membrane is dried in an oven at 70°C for 12 hours to ensure that there is a certain amount of bound water on the surface of the membrane; the acid solution is HCl solution;

[0027] (2) Silanization modification of the membrane: add acid-treated α-Al to the conical flask 2 o 3 Ceramic diaphragm (specific surface area 6.15cm 2 ) and a toluene solution with a mass concentration of 5% KH-570, ultrasonically oscillated to make it dissolve evenly, and the temperature was refluxed at 80°C for reaction; after the reaction, the membrane was cleaned, and the cleaned membrane was first dried at room temperature, and then heated at 120°C down dry;

[0028] (3) Preparation of composite membrane: put 0.05g of potassium...

Embodiment 2

[0030] (1) with embodiment 1, wherein acid solution is HNO 3 solution, where the diaphragm is ZrO 2 Diaphragm;

[0031] (2) Silanization modification of the film: adding acid-treated ZrO in the conical flask 2 Ceramic diaphragm and toluene solution containing 15% KH-570, ultrasonically oscillated to dissolve evenly, and reflux reaction at 80°C; after the reaction, the diaphragm was cleaned, and the cleaned diaphragm was first dried at room temperature, and then dried at 120 Dry at ℃;

[0032] (3) Preparation of composite membrane: put 0.025g of potassium persulfate and 20ml of deionized water into the reactor, ultrasonically dissolve them evenly, then add 0.75g of N-isopropylacrylamide monomer, feed in nitrogen and change the above Add a permanent ceramic diaphragm, heat to 80°C, and react with constant temperature oscillation for 30 minutes; then ultrasonically clean it with deionized water several times, and dry the obtained diaphragm in a vacuum oven at 60°C to obtain a ...

Embodiment 3

[0034] (1) with embodiment 1, wherein diaphragm is SiO 2 Diaphragm;

[0035] (2) Silanization modification of the film: SiO after acid treatment was added to the conical flask 2 Ceramic diaphragm and toluene solution containing 10% KH-570, ultrasonically oscillated to dissolve evenly, and reflux reaction at 80°C; after the reaction, the diaphragm was cleaned, and the cleaned diaphragm was first dried at room temperature, and then dried at 120 Dry at ℃;

[0036] (3) Preparation of composite membrane: put 0.1g potassium persulfate and 50ml deionized water into the reactor, ultrasonically dissolve them evenly, then add 0.5g N-isopropylacrylamide monomer, feed nitrogen gas and change the above Add a non-toxic ceramic diaphragm, heat to 60°C, and oscillate at a constant temperature for 100 minutes; then ultrasonically clean it several times with deionized water, and dry the obtained diaphragm in a vacuum oven at 60°C to obtain a temperature-sensitive and responsive intelligent ce...

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Abstract

The invention discloses a preparation method for a temperature sensitive response type intelligent ceramic composite membrane and a product. The product is obtained by chemical graft copolymerization of N-isopropyl acrylamide on the surface of a ceramic membrane. The invention takes the ceramic membrane as a basement membrane, takes the N-isopropyl acrylamide as a functional monomer, and adopts a method of chemical graft to prepare the temperature sensitive response type intelligent ceramic composite membrane. The prepared intelligent ceramic composite membrane can overcome the disadvantage of low mechanical strength of an intelligent membrane prepared taking an organic membrane as the basement membrane, has favorable chemical stability, long service life and the environmental sensitivity of a graft monomer, and is easy to disinfect and clean.

Description

technical field [0001] The invention belongs to the field of membrane technology, and relates to a preparation method of a ceramic composite membrane, in particular to a preparation method and a product of a temperature sensitive and responsive intelligent ceramic composite membrane. Background technique [0002] Compared with traditional separation technologies such as chromatography and distillation, membrane separation technology has outstanding advantages such as high separation efficiency, low energy consumption, convenient operation, no pollution to the environment, easy amplification, and coupling with other separation technologies. In membrane separation technology, membrane material is the key to realize the separation process. So far, although membrane materials have been greatly developed, the permeability of traditional functional membranes is basically independent of environmental factors, while there are many smart membranes with environmental response behavior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/78B01D69/12B01D67/00
Inventor 赵宜江杨连丽褚效中周守勇陈岩邢卫红
Owner HUAIYIN TEACHERS COLLEGE
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