Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for preparing nuclear shell type magnetic composite resin microballoons

A technology of magnetic composite microspheres and phenolic resin, which is applied in the fields of organic material/organic magnetic material magnetism, microsphere preparation, microcapsule preparation, etc. It takes a long time and other problems to achieve the effect of fast speed, regular structure and controllable process.

Inactive Publication Date: 2014-03-26
FUDAN UNIV
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned traditional hydrothermal method is feasible, its obvious defect reaction takes a long time, generally needs more than ten hours to tens of hours, and consumes a lot of energy in the whole process. Therefore, a simple and fast method has been developed. It is of great significance to prepare core-shell magnetic composite microspheres with a new energy-saving method

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
  • Method for preparing nuclear shell type magnetic composite resin microballoons
  • Method for preparing nuclear shell type magnetic composite resin microballoons
  • Method for preparing nuclear shell type magnetic composite resin microballoons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: The magnetic cluster of ferroferrogen tetroxide is about 180nm, and the thickness of the shell layer of phenolic resin is 10nm.

[0022] Disperse 20mg of phenol in 20mL of deionized water, then add 0.15mL of ammonia water and 10mg of ferric iron tetroxide nanoparticles, after the dispersion is uniform, add 0.1mL of formaldehyde, and sonicate for 10 minutes to obtain a uniformly dispersed and stable suspension. The resulting homogeneous and stable suspension was transferred to a microwave tube and reacted under microwave irradiation. The microwave reaction temperature is 160°C, react for 5 minutes, cool the microwave tube to room temperature and take it out. The product was separated by magnetic separation, and the reactant was washed with deionized water and absolute ethanol, and dried in a vacuum oven at 50° C. for 4 hours.

Embodiment 2

[0023] Example 2: The ferroferromagnetic cluster is about 180nm, and the thickness of the phenolic resin shell layer is 30nm.

[0024] The steps are the same as those described in Example 1, except that the microwave heating time is changed from 5 minutes to 10 minutes.

Embodiment 3

[0025] Embodiment 3: The ferroferroic oxide magnetic cluster is about 180nm, and the thickness of the phenolic resin shell layer is 60nm.

[0026] The steps are the same as those described in Example 1, except that the microwave heating time is changed from 10 min to 20 min.

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 belongs to the technical field of function materials, and relates to a method for preparing nuclear shell type magnetic composite resin microballoons. The new method provided by the invention is a microwave hydrothermal method, the nucleus of the nuclear shell type magnetic composite microballoons is a magnetic ferroferric oxide nano cluster, and the shell layer is a phenolic resin. The preparation method comprises the steps of firstly preparing magnetic ferroferric oxide nanoparticles, taking the magnetic ferroferric oxide nanoparticles as seeds under the microwave hydrothermal condition, and covering phenol and methanal on the surface of ferroferric oxide through in situ polymerization. The preparation method provided by the invention has the advantages that the speed is high, the operation is simple, no surface active agent needs to be added, the process is controllable, the grain diameters of the obtained composite resin microballoons are uniform, the thickness of the shell layer is controllable, the magnetic responsibility is rapid, the stability is high, and the preparation method has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional materials and relates to a method for preparing core-shell magnetic composite resin microspheres. The method can simply and quickly prepare magnetic composite resin microspheres with core-shell structure. Background technique [0002] The magnetic polymer composite microsphere with core-shell structure is a new type of functional material, which is composed of a magnetic core and a polymer shell. The magnetic polymer composite microspheres not only have the commonality of many polymer microspheres, but also can introduce a variety of reactive functional groups (such as hydroxyl, mercapto, aldehyde, amino, etc.) on the surface of the microspheres through chemical reactions such as copolymerization and surface modification. ), can also bind enzymes, cells, antibodies and other biologically active substances through covalent bonds, and also have the functions of targeting external magnetic field, ...

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): B01J13/02H01F1/42
Inventor 汪长春游力军
Owner FUDAN UNIV
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