Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for flexible composite loaded with macro MOFs efficiently

A technology of composite materials and flexible substrates, which is applied in the direction of flat products, applications, coatings, etc., can solve the problems of difficult macro-production of MOFs/flexible composite materials, low loading of MOFs, poor environmental friendliness, etc., and achieve good industrial The effect of application prospect, low cost and short time consumption

Active Publication Date: 2020-06-05
UNIV OF SCI & TECH BEIJING
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing preparation methods of MOFs / flexible composites (such as solvothermal method, secondary growth method, layer deposition method, etc.) need to use a large amount of organic solvents, and the preparation time is long (24h~72h), and the loading capacity of MOFs is low. , there are defects of high cost, long time-consuming, low efficiency, and poor environmental friendliness, and the prepared MOFs / flexible composite materials are difficult to produce macroscopically

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for flexible composite loaded with macro MOFs efficiently
  • Preparation method for flexible composite loaded with macro MOFs efficiently
  • Preparation method for flexible composite loaded with macro MOFs efficiently

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of MOF-808 / PP Composite by Hot Pressing with Trifluoroacetic Acid

[0032] 1) Prepare a commercially available polypropylene (PP) fabric, rinse it with NaOH aqueous solution to remove impurities and dust on the surface of the fabric, and then dry it at 50°C for use.

[0033] 2) Prepare the corresponding metal salt ZrOCl of MOF-808 2 ·8H 2 O (0.64g) and organic ligand H 3 BTC (0.44g) and polyethylene glycol (0.8mL, Mn=200) were thoroughly ground and mixed in an agate mortar. Add 0.2 mL of trifluoroacetic acid into the mortar, continue to grind and mix well. The mixture was uniformly coated on a PP film (20cm×20cm), wrapped with aluminum foil, and hot pressed using a hot press at a temperature of 200°C for 15 minutes. After the hot pressing, the MOF-808 / PP nanofiber composite membrane material was taken out from the aluminum foil, rinsed three times with 10 mL deionized water and 10 mL acetone, and dried at 80 °C for 4 h.

[0034] Such as figure 2 As sh...

Embodiment 2

[0037] 1) Weigh 2.0g PET and add it into a black cap bottle filled with 10mL DMF to make a spinning solution, and stir it magnetically for 8 hours to make it evenly mixed. The mixed spinning solution was placed in a syringe equipped with a 23# flat needle, at room temperature, the voltage was 18kV, and the flow rate was 1.5mL / h to prepare a nanofiber film and receive it with aluminum foil. The distance between the spinneret and the receiver is 20 cm. The prepared PET nanofiber film was dried in a vacuum oven at 50° C. for 6 hours, and then taken out for use. The diameter of the prepared PET film was about 300 nm to 500 nm.

[0038] 2) UiO-66-NH will be prepared 2 The corresponding metal salt ZrCl 4 (0.24g) and the organic ligand BDCA-NH 2 (0.20g) and polyethylene glycol (0.2g, Mn=4000) were placed in an agate mortar and thoroughly ground and mixed uniformly.

[0039] 3) Dilute trifluoroacetic acid: acetone according to the volume ratio of 1:10, put it into a spray gun, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method for a flexible composite loaded with macro MOFs efficiently, and belongs to the technical field of composites. Metal-organic frameworks (MOFs) are combinedwith nano, micro-nano or micron textiles effectively through a hot pressing method. By means of the supporting function of a flexible substrate for the MOFs, the agglomeration problem of the MOFs dueto powder properties, and the problem of power application restriction are reduced; through introduction of trifluoroacetic acid into a system, more MOFs with metal cluster defects and ligand defectsare manufactured in the self-assembly process of the MOFs, and meanwhile more active groups are exposed to the surfaces of the flexible composite; and the combination between the MOFs and the flexiblecomposite is improved, so that the MOFs are combined with the flexible composite more securely, and are not liable to fall out. The MOFs / flexible composite prepared with the preparation method has the characteristics of uniform fiber size, high MOFs loading capacity and excellent mechanical property of films. The preparation method has the advantages of low cost, simple process, low time consumption, good environmental friendliness, capability of macro production, and wide industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing a macroscopically efficient flexible composite material loaded with MOFs. Background technique [0002] Metal-organic frameworks (MOFs) are a class of porous crystalline materials formed by self-assembly of metal ions and organic ligands, with adjustable pore size, high porosity and high specific surface area. At the same time, by adding additional groups to organic ligands, the hydrophilicity, hydrophobicity, stability, and catalytic activity of MOFs can be changed, which makes MOFs have high application potential in the fields of gas storage, separation, sensing, drug loading, and catalysis. . However, the powder of MOFs is difficult to use alone and easily causes secondary pollution, which limits the practical application value and scope of MOFs. [0003] The development and application of flexible materials is a hot research direction at p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29D7/01C08G83/00D06N3/12
CPCB29D7/01C08G83/008D06N3/12D06N2201/02D06N2201/0254D06N2203/06
Inventor 李从举孙亚昕张秀玲
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com