Preparation method of composite material, composite material and application of composite material

A composite material and polymer technology, applied in the field of preparation of organic porous polymer composite materials, can solve the problems of uneven spreading, reducing the resistance of the precursor solution, and the difficulty of compounding MOFs and supporting materials, etc., to improve the mass transfer rate and The effect of adsorption efficiency, high mechanical strength and fast adsorption rate

Active Publication Date: 2020-11-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of difficulty in compounding MOFs and loading materials and uneven spreading, the present invention uses an internal multi-level pore structure interconnected with well-developed pores, and a polyacrylamide material mainly with a macroporous structure to compound with MOFs to reduce the diffusion of the precursor solution into the resistance inside the particle

Method used

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  • Preparation method of composite material, composite material and application of composite material
  • Preparation method of composite material, composite material and application of composite material
  • Preparation method of composite material, composite material and application of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Accurately weigh 1.6g of acrylamide, 0.4g of N,N-methylenebisacrylamide, 0.1g of poloxamer F127, and 0.03g of ammonium persulfate, dissolve them in 5ml of deionized water, and ultrasonicate for 5min to obtain the water phase; Mix 11ml of toluene and 5ml of cyclohexane evenly to obtain an oil phase; stir the water phase at a speed of 3000r / min, add the oil phase to the water phase, and continue stirring for 5min to form a uniform and stable emulsion. Measure 15ml of toluene, 15ml of carbon tetrachloride, and 60ml of cyclohexane, and add 0.15g of ethyl cellulose to mix evenly as the third phase. Pour the emulsion into the third phase under the protection of nitrogen. Then, 14 drops of reducing agent N,N,N',N'-tetramethylethylenediamine were added, and cross-linking polymerization was carried out at 65°C for 30min. After solidification, the balls were taken out and washed with ethanol and placed in an oven to dry to constant weight, and then the dried polymer particles wer...

Embodiment 2

[0036] The preparation process of polyacrylamide particles is the same as in Example 1. Accurately weigh 2.1g of metal salt zirconium chloride, measure 7.5ml of acetic acid, and ultrasonically dissolve it in 15ml of N,N-dimethylformamide to prepare A solution, then weigh 1.1g of fumaric acid, measure 1.0ml of three Ethylamine was ultrasonically dissolved in 15ml N,N-dimethylformamide to prepare B solution, and then A solution and B solution were ultrasonically mixed to obtain a precursor solution, which was poured into 0.3g dry polypropylene In the flask of amide particles, the flask was reacted in an 85°C oil bath for 24h, and MOFs particles grew on the macroporous surface of the porous polymer. After washing and drying at 150°C for 24h, they were activated to obtain MOFs / polyacrylamide composites.

[0037] The scanning electron microscope image of the internal pore structure of the MOFs / polyacrylamide composite material prepared in this example is shown in Figure 4 , it ca...

Embodiment 3

[0039] The preparation process of polyacrylamide particles is the same as in Example 1. Accurately weigh 2.1g of metal salt zirconium chloride, measure 15ml of acetic acid, ultrasonically dissolve it in 15ml of N,N-dimethylformamide to prepare A solution, then weigh 1.1g of fumaric acid, measure 2.0ml of trimethylamine Ultrasonic dissolved in 15ml N,N-dimethylformamide to prepare B solution, then ultrasonically mixed solution A and solution B to obtain a precursor solution, and poured it into 0.3g dry polyacrylamide particles In the flask, the flask was reacted in an oil bath at 100°C for 24h, and MOFs particles grew on the macroporous surface of the porous polymer. After washing, the solvent was removed in a vacuum drying oven for 24h to activate, and the MOFs / polyacrylamide composite material was obtained. .

[0040] The scanning electron microscope image of the internal pore structure of the MOFs / polyacrylamide composite material prepared in this example is shown in Figu...

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Abstract

The invention discloses a preparation method of a composite material, a product and application of the composite material. According to the method, a precursor solution is impregnated into polymer particles, in-situ loading of MOFs one-time forming is achieved, structural design is conducted on the porous composite material by adjusting the concentration of metal salt and organic ligands and adding an adjusting agent, and regulation and control over the size of MOFs crystals are achieved. According to the composite material prepared by the method, the space structure advantages of polyacrylamide materials which are communicated with one another and have hierarchical pore structures can be utilized; by combining with active amino on the pore wall, uniform spreading of a nano MOFs layer is realized, the mass transfer rate and the adsorption efficiency of the material in water vapor trapping are greatly improved, and the material can be suitable for water vapor trapping in different humidity environments. The method is simple in preparation mode, easy to form, high in mechanical strength and suitable for industrial production.

Description

technical field [0001] The invention relates to an inorganic-organic composite material, in particular to a preparation method of an organic porous polymer composite material loaded with MOFs, the composite material and its application. Background technique [0002] Water scarcity is one of the most challenging issues threatening human life. Two-thirds of the world's population lives without water for at least one month of the year. To make matters worse, half a billion people on the planet face severe water shortages every year. The atmosphere retains 12,900 billion tons of fresh water, which is equivalent to 10% of the water in all the lakes on Earth, and is a very precious natural resource. Given the rapid population growth, the general shortage of clean water, and the pollution of water resources, harvesting atmospheric water to produce freshwater is becoming an alternative and promising approach, especially in arid regions. There are various methods of airborne water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/26C08L87/00B01J20/26B01D53/26B01J20/30C08G83/00C08F220/56C08F222/38C08J9/40
CPCC08L33/26B01J20/265B01D53/261C08G83/008C08F220/56C08J9/405B01D2257/80C08J2333/26C08L87/00C08F222/385
Inventor 密建国孟洪金君素朱吉钦杜智霖
Owner BEIJING UNIV OF CHEM TECH
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