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Preparation method of fluorine-containing alkyl conjugated microporous polymer mixed matrix membrane

A mixed matrix membrane, conjugated micropore technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of limiting the practical application value of CMP, inability to separate, high cost of oil-water separation, and achieve good oil-water separation. Separation performance, the effect of meeting the needs of use

Active Publication Date: 2020-12-22
QIQIHAR UNIVERSITY
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Problems solved by technology

[0004] However, although the existing oil-water separation devices have high oil-water separation efficiency, they have limited absorption capacity and cannot perform continuous oil-water separation, which makes the cost of oil-water separation relatively high, and also greatly limits the application of CMP in the field of oil / water separation. Practical application value

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  • Preparation method of fluorine-containing alkyl conjugated microporous polymer mixed matrix membrane
  • Preparation method of fluorine-containing alkyl conjugated microporous polymer mixed matrix membrane

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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In the present invention, a method for preparing a fluorine-containing alkyl conjugated microporous polymer mixed matrix membrane is provided, which specifically includes the following steps:

[0038] S1. Preparation of fluorine containing thionyl chloride, 3,5-dibromobenzoic acid, 1H,1H-perfluorohexylamine and acetonitrile with a mass ratio of 3-5:150-180:1:7-10 as raw materials Conjugated microporous polymers to obtain fluorine-containing conjugated m...

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Abstract

The invention belongs to the technical field of preparation and application of conjugated microporous polymers, and discloses a preparation method of a fluorine-containing alkyl conjugated microporouspolymer mixed matrix membrane. The method comprises the following steps: S1, preparing a yellow powdery fluorine-containing conjugated microporous polymer CMP-FSN; S2, putting polyimide into a firstthree-necked flask, adding tetrahydrofuran into the first three-necked flask, and conducting stirring at a high speed until the tetrahydrofuran is completely dissolved; S3, adding the fluorine-containing conjugated microporous polymer CMP-FSN into the first three-necked flask in the step S2, and continuing stirring until complete mixing is realized to obtain a mixed membrane casting solution; S4,putting the mixed membrane casting solution into an injector, wherein the volume of the injector is 10 mL, and the diameter of a needle head is 15 mm; S5, subjecting the injector in the step S4 to electrostatic spinning at a voltage level of 20-25 kV, and collecting nanofibers spun through electrostatic spinning by using a material collecting roller, wherein the surface of the material collectingroller is coated with aluminum foil; and S6, stacking the nanofibers on the surface of the material receiving roller to form a membrane, and drying the membrane at a temperature of 70-90 DEG C for 2-4h to obtain the 3% CMP-FSN / PI mixed matrix membrane.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of conjugated microporous polymers, in particular to a method for preparing a fluorine-containing alkyl conjugated microporous polymer mixed matrix membrane. Background technique [0002] Water pollution is an extremely serious pollution problem at present, causing huge economic losses and social impact. For example: oil spills caused by oil exploitation, transportation and storage have brought great harm to the environment, and its large-scale oil spills will directly threaten marine biological species and ecosystems. Therefore, in order to solve the harm caused by such accidents, it is necessary to A treatment scheme that can effectively carry out high-efficiency oil-water separation and gas separation is proposed. [0003] Conjugated microporous polymers (CMPs) are new polymer materials with high specific surface area and adjustable pore structure. Compared with conventiona...

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Application Information

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IPC IPC(8): B01D71/76B01D67/00B01D17/02
CPCB01D71/76B01D67/0011B01D17/02
Inventor 藏雨黄媛雷天阳徐亮高珊
Owner QIQIHAR UNIVERSITY
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