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

A kind of oriented flexible magnetoelectric composite material and its preparation method

A magnetoelectric composite material and flexible technology, which is applied in the field of oriented flexible magnetoelectric composite material and its preparation, can solve the problems of limited improvement of magnetoelectric coupling performance and relatively few studies on the influence relationship of magnetoelectric coupling performance. Excellent mechanical properties and magnetoelectric coupling performance, improved interfacial compatibility, and enhanced magnetostrictive effect

Active Publication Date: 2021-09-21
HUNAN INSTITUTE OF ENGINEERING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many studies are devoted to improving the magnetoelectric coupling performance of polymer PVDF-based magnetoelectric composites by changing the type of magnetic filling material, optimizing the volume content, and adjusting the input field strength, but the above methods have very limited effect on improving the magnetoelectric coupling performance; There are relatively few studies on the relationship between the microstructure and the magnetoelectric coupling performance of composite materials

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
  • A kind of oriented flexible magnetoelectric composite material and its preparation method
  • A kind of oriented flexible magnetoelectric composite material and its preparation method
  • A kind of oriented flexible magnetoelectric composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, the oriented flexible magnetoelectric composite material, the ferroelectric polymer is vinylidene fluoride-trifluoroethylene copolymer, wherein the molar ratio of vinylidene fluoride:trifluoroethylene is 3:1; the metal fiber is iron fiber, The massfraction of iron fiber in the composite material is 15%; Concrete preparation method comprises as follows:

[0039] (1) Surface treatment of iron fibers: Weigh 4g of iron fibers, place them in a beaker filled with 30mL of absolute ethanol, drop 0.2g of silane coupling agent KH550 (purity 98%), and ultrasonically disperse for 30min; The mixture beaker was placed in a water bath at a constant temperature of 60°C, and mechanically stirred with a precision booster electric stirrer for 40 minutes; then dried in a vacuum oven to obtain iron fibers surface-treated with a silane coupling agent;

[0040] (2) Preparation of ferroelectric polymer solution: Weigh 10g of ferroelectric polymer powder, then add it into 5m...

Embodiment 2

[0051] In this embodiment, the oriented flexible magnetoelectric composite material, the ferroelectric polymer is vinylidene fluoride-trifluoroethylene copolymer, wherein the molar ratio of vinylidene fluoride:trifluoroethylene is 4:1; the metal fiber is iron fiber, The massfraction of iron fiber in the composite material is 20%, and its preparation method comprises the steps:

[0052] (1) Surface treatment of iron fibers: Weigh 4g of iron fibers, put them in a beaker filled with 50mL of absolute ethanol, drop in 0.25g of silane coupling agent KH550 (purity 98%), and ultrasonically disperse for 30min; The beaker was placed in a water bath, kept at a constant temperature of 70°C, and mechanically stirred with a precision booster electric stirrer for 30 minutes; then dried in a vacuum oven to obtain iron fibers surface-treated with a silane coupling agent;

[0053] (2) Preparation of ferroelectric polymer solution: Weigh 10g of ferroelectric polymer powder, then add it into 5mL ...

Embodiment 3

[0059] In this embodiment, the oriented flexible magnetoelectric composite material, the ferroelectric polymer is vinylidene fluoride-trifluoroethylene copolymer, wherein the molar ratio of vinylidene fluoride:trifluoroethylene is 4:1; the metal fiber is iron fiber, The mass fraction of iron fibers in the composite is 15%. Its preparation method comprises the following steps:

[0060] (1) Surface treatment of iron fibers: Weigh 4g of iron fibers, place them in a beaker filled with 50mL of absolute ethanol, drop in 0.25g of silane coupling agent KH550 (purity 98%), and ultrasonically disperse for 30min; The mixture beaker was placed in a water bath, kept at a constant temperature of 70 ° C, and mechanically stirred with a precision booster electric stirrer for 30 minutes; then dried in a vacuum oven to obtain iron fibers surface-treated with a silane coupling agent;

[0061] (2) Preparation of ferroelectric polymer solution: Weigh 10g of ferroelectric polymer powder, then add ...

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
diameteraaaaaaaaaa
heightaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

An oriented flexible magnetoelectric composite material and a preparation method thereof. The oriented flexible magnetoelectric composite material is composed of ferroelectric polymers and metal fibers. The preparation method of the oriented flexible magnetoelectric composite material adopts a tape-casting preparation process, and the mixed slurry of the metal fiber and the ferroelectric polymer treated with the silane coupling agent is tape-cast to form a film, and then dried and solidified under the action of a magnetic field. The oriented flexible magnetoelectric composite material of the present invention has both ferroelectricity and ferromagnetism, has high magnetoelectric voltage coefficient and magnetodielectric response, and at the same time, the magnetoelectric composite material has good flexibility, simple preparation process and operation, and can be used for flexible magnetoelectric sensors , energy converters and other functional devices.

Description

technical field [0001] The invention belongs to the technical field of magnetoelectric functional materials and their preparation, and in particular relates to an oriented flexible magnetoelectric composite material and a preparation method thereof. Background technique [0002] With the rapid development of electronic materials and devices, single functional materials are difficult to meet the miniaturization and multifunctional requirements of new electronic components, and the development of multifunctional composite materials has become a research hotspot in the field of materials. Multiferroic magnetoelectric functional composite materials not only have all the characteristics of a single ferroelectric material and ferromagnetic material, but also have a new functional effect produced by ferroelectric order and magnetic order coupling—magnetoelectric coupling effect, that is, the realization of electric energy and magnetic energy. , The mutual conversion and regulation ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/16C08K9/06C08K7/06C08J5/18
CPCC08J5/18C08J2327/16C08K7/06C08K9/06
Inventor 刘胜魏克湘邹鸿翔颜铄清
Owner HUNAN INSTITUTE OF ENGINEERING
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