Supercharge Your Innovation With Domain-Expert AI Agents!

Esterification method for improving dispersity of hydroxyl-containing nano material

A nanomaterial, dispersive technology, applied in nonlinear optics, instruments, optics, etc.

Active Publication Date: 2021-05-07
JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the defects of the modification method of nano-particle esterification reaction, and provides a method for improving the dispersion of nano-materials with hydroxyl groups on the surface. Chemical modification not only has low cost and simple process, but also can effectively graft small organic molecules on the surface of nanoparticles, so that nanoparticles can not be agglomerated under long-term energized conditions, which greatly improves the stability and use of the nanomaterials. life

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
  • Esterification method for improving dispersity of hydroxyl-containing nano material
  • Esterification method for improving dispersity of hydroxyl-containing nano material
  • Esterification method for improving dispersity of hydroxyl-containing nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dissolve 3g of calcium iodide, 2g of iodine and 4g of nitrocellulose into 40mL of isoamyl acetate, add 1g of DPA-modified hydroxyapatite nanorods in Preparatory Example 2, and then add 3g of 2,5-pyrazinedicarboxylic acid and 4g of methanol, stirred for 30min, mixed thoroughly and placed in an oil bath at 40°C for 1h. Add 0.5mL triethylamine and 1mL stearyl chloride directly, and continue the reaction for 12h. After cooling, the reaction product was centrifuged at 2000r / min, the solid was discarded, and then centrifuged at 10000r / min, the solid was washed 3 times with isoamyl acetate to obtain an iodine-doped calcium complex with octadecyl modification on the surface. The core-shell composite nanomaterial VII (which is the nanomaterial containing hydroxyl groups in this example) is a core-shell composite nanomaterial VII (which is the hydroxyl group-containing nanomaterial in this example), and its appearance is as follows figure 1 shown.

[0041] Analysis of the infra...

Embodiment 2

[0043] Dissolve 3g of calcium iodide, 2g of iodine and 4g of nitrocellulose into 40mL of isoamyl acetate. After fully dissolving, add 3g of 2,5-pyrazinedicarboxylic acid and 4g of methanol in sequence, stir for 30min, and mix well Then put it in a 40°C oil bath and react for 1h. Add 0.5mL triethylamine and 1mL stearyl chloride directly, and continue the reaction for 12h. After cooling, the reaction product was centrifuged at 2000r / min, the solid was discarded, and then centrifuged at 10000r / min, the solid was washed 3 times with isoamyl acetate to obtain an iodine-doped calcium complex with octadecyl modification on the surface. Polymer material VIII (which is the nanomaterial containing hydroxyl groups in this embodiment).

[0044] Comparative Example 3 is an iodine-doped calcium coordination polymer material that is not modified by stearoyl chloride, and Example 2 is an iodine-doped calcium coordination polymer material that is modified by stearoyl chloride; the present app...

Embodiment 3

[0046] Dissolve 0.5g of nickel chloride and 0.8g of terephthalic acid in 40mL of DMF, add 1mL of methanol, mix thoroughly, place in a 100mL three-neck flask, react at a constant temperature of 80°C for 1 hour, and directly add 0.5mL of triethylamine And 1mL stearyl chloride, continue to react for 12h. After cooling, the green solid was centrifuged at 9000r / min, and washed three times with DMF and ultrapure water, respectively, to obtain the metal-organic coordination polymer nanomaterial IX with octadecyl-modified Ni coordination on the surface (It is the nanomaterial containing hydroxyl group in this embodiment).

[0047] Comparative example 1 is the metal-organic coordination polymer material of Ni coordination that is not modified by stearoyl chloride, and embodiment 3 is the metal-organic coordination polymer material of Ni coordination that is modified by stearoyl chloride; In the application, infrared analysis was carried out on the products synthesized in Comparative E...

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 relates to an esterification method for improving dispersity of a hydroxyl-containing nano-material, and the method comprises the following steps: S1, sufficiently stirring and uniformly mixing a hydroxyl-containing nano-material precursor and an organic solvent to obtain a mixed solution; S2, heating the mixed solution in the step S1 for full pre-reaction; S3, adding acyl halide into the solution which is heated and fully pre-reacted in the step S2, and further performing reacting to finally obtain the surface-modified hydroxyl-containing nano material. After the hydroxyl-containing nano material is subjected to surface modification through the acyl halide, the dispersity of the hydroxyl-containing nano material is effectively improved, and the modified hydroxyl-containing nano material is not agglomerated under the condition of long-time external voltage electrification and is kept stable; the esterification modification method does not cause great influence on the structure of the nano material, and does not need water-free and oxygen-free harsh conditions.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to an esterification method for improving the dispersibility of hydroxyl-containing nanomaterials. Background technique [0002] In recent years, with the remarkable development of nanotechnology, nanoparticles have not only been applied in industry, but also gradually entered the civilian field. More and more new products based on nanomaterials have appeared on the market. Magnetic, biological, etc. However, the application of nanoparticles also has a severe test, that is, the problem of agglomeration of nanoparticles. The biggest disadvantage it brings is the reduction of the performance of nanomaterials. Specifically, the agglomeration of nanoparticles increases the growth of nanoparticles, which affects the efficiency and performance of nanomaterials. In addition, the problem of agglomeration will also affect the storage and transportation of nanomaterials, which will gr...

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): C08K9/10C08K9/04C08K3/32C08K7/00C08K5/12C08L1/18G02F1/00
CPCC08K9/10C08K9/04C08K3/32C08K7/00C08K5/12G02F1/0009C08K2201/011C08L1/18C08K5/0016C08K5/04C08K5/17
Inventor 王佳斌朱巍张毅晨王耀牛佳悦
Owner JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com