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Preparation method of polyvinylidene fluoride composite mixture, and polyvinylidene fluoride composite membrane and preparation method and application thereof

A polyvinylidene fluoride and composite membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of materials that cannot resist pollution and poor membrane formation

Active Publication Date: 2020-03-24
GUIYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metal-organic framework material MIL-100-Fe has good adsorption performance due to its polar functional groups and molecular pores in its structure, but its own poor film-forming property, so it cannot be directly used in the preparation of anti-pollution materials

Method used

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  • Preparation method of polyvinylidene fluoride composite mixture, and polyvinylidene fluoride composite membrane and preparation method and application thereof
  • Preparation method of polyvinylidene fluoride composite mixture, and polyvinylidene fluoride composite membrane and preparation method and application thereof
  • Preparation method of polyvinylidene fluoride composite mixture, and polyvinylidene fluoride composite membrane and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of a polyvinylidene fluoride composite film, comprising the following steps:

[0045] (1) 0.21g trimesic acid and 0.675g FeCl3 Disperse in 50mL DMF (N,N'-dimethylformamide), react at 120°C for 20h, stop the reaction, cool to 20°C, wash off unreacted trimeric acid with ethanol, dry at 80°C, Crystal A is obtained, and the crystal A is ground with a mortar to obtain powder A, which is the metal organic framework material MIL-100-Fe.

[0046] (2) Add 0.5g of metal-organic framework material MIL-100-Fe and 8g of N-methylpyrrolidone into the reactor, ultrasonically disperse at room temperature for 2 hours, then add 1.5g of polyvinylidene fluoride into the reactor, and stir at 60°C 4h, the composite mixture was obtained.

[0047] (3) Vacuum defoaming and aging treatment of the composite mixture to obtain the modified casting solution.

[0048] (4) Apply the spin coating method (the spin coating speed is 200r / min, and the spin coating time is 20s) to coat...

Embodiment 2

[0057] A preparation method of a polyvinylidene fluoride composite film, comprising the following steps:

[0058] (1) 0.21g trimesic acid and 0.675g FeCl 3 Disperse in 50mL DMF (N,N'-dimethylformamide), react at 120°C for 20h, stop the reaction, cool to 20°C, wash off unreacted trimeric acid with ethanol, dry at 80°C, Crystal A is obtained, and the crystal A is ground with a mortar to obtain powder A, which is the metal organic framework material MIL-100-Fe.

[0059] (2) Add 1g metal-organic framework material MIL-100-Fe and 7.5g N-methylpyrrolidone into the reactor, ultrasonically disperse at room temperature for 2 hours, then add 1.5g polyvinylidene fluoride into the reactor, and stir at 60°C 4h, the composite mixture was obtained.

[0060] (3) Vacuum defoaming and aging treatment of the composite mixture to obtain the modified casting solution.

[0061] (4) Spin coating method (the spin coating speed is 1000r / min, and the spin coating time is 30s) is used to coat the mod...

Embodiment 3

[0068] A preparation method of a polyvinylidene fluoride composite film, comprising the following steps:

[0069] (1) 0.21g trimesic acid and 0.675g FeCl 3 Disperse in 50mL DMF (N,N'-dimethylformamide), react at 120°C for 20h, stop the reaction, cool to 20°C, wash off unreacted trimeric acid with ethanol, dry at 80°C, Crystal A is obtained, and the crystal A is ground with a mortar to obtain powder A, which is the metal organic framework material MIL-100-Fe.

[0070] (2) Add 1g metal-organic framework material MIL-100-Fe and 7g N-methylpyrrolidone into the reactor, ultrasonically disperse at room temperature for 2h, then add 2g polyvinylidene fluoride into the reactor, stir at 60°C for 4h, A compound mixture is obtained.

[0071] (3) Vacuum defoaming and aging treatment of the composite mixture to obtain the modified casting solution.

[0072] (4) Spin-coating method (spin-coating speed of 300r / min, spin-coating time of 90s) is used to coat the modified casting solution on ...

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Abstract

The invention provides a preparation method of a polyvinylidene fluoride composite mixture, and a polyvinylidene fluoride composite membrane and a preparation method and application thereof, belongingto the technical field of functional polymer materials. The preparation method of the polyvinylidene fluoride composite mixture comprises the following steps: dispersing a metal organic framework ina polar organic solvent, then adding polyvinylidene fluoride, and carrying out dispersing for 4-10 hours at a temperature of 50-70 DEG C to obtain the composite mixture. The preparation method of thepolyvinylidene fluoride composite membrane comprises the following steps: sequentially subjecting the polyvinylidene fluoride composite mixture to defoaming, curing and coating. The polyvinylidene fluoride composite membrane prepared by the method has good adsorption capacity and certain blood compatibility, and can be used as a blood contact material.

Description

technical field [0001] The present application relates to the technical field of functional polymer materials, in particular, to a preparation method of a polyvinylidene fluoride composite compound, a polyvinylidene fluoride composite film, its preparation method and its application. Background technique [0002] Metal-Organic Frameworks (MOFs) is an inorganic-organic composite material, which is composed of metal ions and multifunctional organic ligands to form a crystalline porous material with a periodic network structure through self-assembly. Due to the combination of the periodic network pore structure and the properties of the organic material framework, the biggest feature of the metal organic framework material is its high porosity and huge specific surface area. In recent years, through the design and synthesis of metal-organic framework materials with controllable functional groups in the molecular structure, the application fields of such materials have become mo...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L87/00C08J5/18B01D71/34B01D69/12B01D67/00A61L27/50A61L27/16
CPCA61L27/16A61L27/507B01D67/0002B01D69/12B01D71/34C08J5/18C08J2327/16C08J2487/00C08L2203/02
Inventor 覃慧陈舒忆王壹聂胜强成刚罗军陶泽志
Owner GUIYANG UNIV
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