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A kind of preparation method of hydrophilic organosilicon film

A silicone and hydrophilic technology, applied in the field of preparation of hydrophilic silicone membrane, can solve the problems of poor water affinity and low permeability

Active Publication Date: 2018-10-19
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor water affinity and low permeability of the current organic silicon membrane, the present invention provides a method for preparing a hydrophilic organic silicon membrane. The organic silicon membrane is soaked in an ozone solution, and by adjusting the soaking time and The concentration of ozone solution can adjust the membrane pore size and its surface water affinity, thereby increasing the water affinity and permeability of the membrane,

Method used

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  • A kind of preparation method of hydrophilic organosilicon film
  • A kind of preparation method of hydrophilic organosilicon film
  • A kind of preparation method of hydrophilic organosilicon film

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Embodiment 1

[0026] (1) Under the catalysis of hydrochloric acid, the organosilicon polymer sol was prepared by the hydrolysis polymerization reaction of the organosilicon source precursor BTESEthy, and the concentration of the sol was diluted to 0.4wt%;

[0027] (2) Adopt hot-coating method to wiping-coat silicon-zirconium sol (0.3wt%) on the ceramic support body, calcine 25min under the high temperature condition of 500 ℃ to form a film, repeat the operation of wiping sol and calcining 8 times, obtain the film transition layer;

[0028] (3) Wipe-coat the organosilicon polymer sol obtained in step (1) on the transition layer obtained in step (2) by thermal coating, and calcined at 200°C for 20 minutes after coating, and repeat the wiping-coating sol and calcining The operation is performed twice to obtain the organic silicon film,

[0029] Prepare 7 parts of the same above-mentioned organosilicon film;

[0030] (4) Soak 6 parts of organosilicon membranes prepared in step (3) in aqueous ...

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Abstract

The invention belongs to the field of organosilicon membrane materials and in particular relates to a method for preparing a hydrophilic organosilicon membrane. The method comprises the following steps: firstly preparing organosilicon polymer gel through hydrolytic polymerization reaction of an organosilicon source precursor; coating silicon-zirconium sol on a ceramic support by using a thermal coating method, and calcining to obtain a membrane transition layer under high-temperature conditions; coating the obtained organosilicon polymer gel on the transition layer by adopting the thermal coating method, and calcining to obtain the organosilicon membrane after coating; and finally, soaking the organosilicon membrane in an ozone water solution, thereby obtaining the modified organosilicon membrane.

Description

technical field [0001] The invention belongs to the field of organic silicon membrane materials, in particular to a preparation method of a hydrophilic organic silicon membrane. Background technique [0002] Organosilicon (or organic-inorganic hybrid silicon) membrane has excellent hydrothermal stability and chemical stability, and its application prospect is very wide, such as membrane separation processes such as reverse osmosis and pervaporation. However, the main disadvantages that limit its development are the low affinity of the membrane to water and the low permeability. Contents of the invention [0003] Aiming at the problems of poor water affinity and low permeability of the current organic silicon membrane, the present invention provides a method for preparing a hydrophilic organic silicon membrane. The organic silicon membrane is soaked in an ozone solution, and by adjusting the soaking time and The concentration of ozone solution can adjust the membrane pore ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/06B01D69/10B01D67/00
CPCB01D67/0002B01D69/02B01D69/10B01D71/06B01D2325/36
Inventor 徐荣姜万钟璟张琪
Owner CHANGZHOU UNIV
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