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

Crosslinkable polyaryl ether nitrile/ferroferric oxide hybridized magnetic material and manufacturing method thereof

A technology of ferroferric oxide and magnetic materials, which is applied in the fields of magnetism of organic materials/organic magnetic materials, preparation of microspheres, and microcapsule preparations. It can solve problems such as high density and difficult processing, improve performance and realize adjustable sexual effect

Active Publication Date: 2016-02-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the traditional ferroferric oxide is used as a wave-absorbing material, it has a high density (5.18g / cm) and is difficult to process. It is difficult to meet the comprehensive requirements of thin thickness, light weight, qualified frequency bandwidth, and strong absorption of the wave-absorbing material at the same time.

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
  • Crosslinkable polyaryl ether nitrile/ferroferric oxide hybridized magnetic material and manufacturing method thereof
  • Crosslinkable polyaryl ether nitrile/ferroferric oxide hybridized magnetic material and manufacturing method thereof
  • Crosslinkable polyaryl ether nitrile/ferroferric oxide hybridized magnetic material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Synthesis of crosslinkable polyarylether nitriles:

[0024] (1) Add 68.8g of 2,6-dichlorobenzonitrile to 150mL of N-methylpyrrolidone to obtain a solution with a concentration of 0.458g / mL;

[0025] (2) Add 8.8g of hydroquinone, 63.2g of biphenol, 66.0g of potassium carbonate and 50mL of toluene to the solution obtained in step (1) sequentially, and dehydrate at 160°C for 4 hours to obtain hydroxyl-terminated poly Aryl ether nitrile;

[0026] (3) When the temperature drops to 80°C, add 6.92g of 4-nitrophthalonitrile to the system after the reaction in step (2), keep the temperature constant and continue the reaction for 5h;

[0027] (4) Pour the reaction product of step (3) into acetone-free precipitation, collect the crude product, and then wash it with deionized water and absolute ethanol for 5 times respectively; dry it in a vacuum oven at 60°C for 10 hours to obtain a cross-linkable Polyarylether nitrile. The structural formula of the crosslinkable polyarylether ...

Embodiment 2

[0036] Synthesis of crosslinkable polyarylether nitriles:

[0037] The synthesis of crosslinkable polyarylether nitrile is consistent with the process in Example 1.

[0038] Preparation of cross-linkable polyarylether nitrile / ferric oxide hybrid microsphere magnetic material:

[0039] (1) Dissolve 0.237 g of crosslinkable polyarylether nitrile in 20 mL of N-methylpyrrolidone to obtain a crosslinkable polyarylether nitrile solution with a concentration of 11.85 mg / mL;

[0040] (2) 5.25g ferric chloride hexahydrate is added in 180mL ethylene glycol, obtain the solution that concentration is 29.2mg / mL, then add 18.0g polyethylene glycol 2000, 5.0g crystalline sodium acetate and step (1) successively ) obtained crosslinkable polyarylether nitrile solution, ultrasonic and mechanical stirring at normal temperature and pressure for 2h;

[0041](3) Transfer the mixed solution obtained in step (2) to a crystallization kettle, perform solvothermal crystallization treatment at 200° C. ...

Embodiment 3

[0046] Synthesis of crosslinkable polyarylether nitriles:

[0047] The synthesis of crosslinkable polyarylether nitrile is consistent with the process in Example 1.

[0048] Preparation of cross-linkable polyarylether nitrile / ferric oxide hybrid microsphere magnetic material:

[0049] (1) Dissolve 0.5 g of crosslinkable polyarylether nitrile in 20 mL of N-methylpyrrolidone to obtain a crosslinkable polyarylether nitrile solution with a concentration of 25 mg / mL;

[0050] (2) 5.25g ferric chloride hexahydrate is added in 180mL ethylene glycol, obtain the solution that concentration is 29.2mg / mL, then add 18.0g polyethylene glycol 2000, 5.0g crystalline sodium acetate and step (1) successively ) obtained crosslinkable polyarylether nitrile solution, ultrasonic and mechanical stirring at normal temperature and pressure for 2h;

[0051] (3) Transfer the mixed solution obtained in step (2) to a crystallization kettle, perform solvothermal crystallization treatment at 200° C. for ...

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

PropertyMeasurementUnit
Saturation magnetizationaaaaaaaaaa
Residual magnetizationaaaaaaaaaa
Saturation magnetizationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a crosslinkable polyaryl ether nitrile / ferroferric oxide hybridized microspherical magnetic material and a manufacturing method thereof. The crosslinkable polyaryl ether nitrile / ferroferric oxide hybridized microspherical magnetic material is a hybridized material composed of crosslinkable polyaryl ether nitrile and ferroferric oxide and in a microsperical shape and can be processed into plates, blocks or thin films, a large number of crosslinkable radicals and groups are contained in the surface of the material, and performance of the material can be further improved through a high temperature crosslinking reaction. The crosslinkable polyaryl ether nitrile / ferroferric oxide hybridized microspherical magnetic material is prepared by making crosslinkable polyaryl ether nitrile and iron chloride hexahydrate be subjected to a solvothermal crystallization reaction under the action of a reducing agent. A series of hybridized magnetic materials having different morphologies and electromagnetic properties can be obtained by changing the content of crosslinkable polyaryl ether nitrile, the saturation magnetization intensity of the magnetic material is 40-80 emu / g, the residual magnetization intensity is 15-40 emu / g, and the maximum reflection intensity for electromagnetic waves ranges from minus 20 dB to minus 30 dB. The magnetic material belongs to the technical field of organic polymer magnetic materials and can particularly serve as an electromagnetic shielding / adsorption material.

Description

technical field [0001] The invention relates to a crosslinkable polyarylether nitrile / ferric oxide hybrid microsphere magnetic material and a manufacturing method thereof, belonging to the technical field of organic polymer magnetic materials. It can be used as a microwave absorbing material in the technical field of electromagnetic shielding. Background technique [0002] With the rapid development of communication equipment and electronic systems, electromagnetic interference has become a serious problem. Electromagnetic interference will not only cause electronic system interruption, but also potentially endanger human health. Therefore, it is urgent to develop light microwave absorbing materials and manufacture electromagnetic shielding devices. Compared with general magnetic metal powders, ferrite materials have higher frequency characteristics, greater relative permeability and smaller relative permittivity. Fe3O4 nanoparticles have attracted widespread attention due...

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): C08L71/10C08K3/22C08J3/24C08G65/40C08G65/46B01J13/14H01F1/42
Inventor 危仁波童利芬徐明珍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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