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

Polymethyl methacrylate/polyvinylidene fluoride composite material as well as preparation method and application thereof

A technology of polymethyl methacrylate and polyvinylidene fluoride, which is applied in the field of polymethyl methacrylate/polyvinylidene fluoride composite material and its preparation, can solve the problem of low energy storage efficiency and energy density of composite materials, and energy storage problems. Poor performance and other problems, to achieve the effect of reducing residual polarization, improving energy storage characteristics, and increasing the maximum electrical displacement

Active Publication Date: 2021-10-08
高亮
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, polyvinylidene fluoride is the commonly used polymer medium for electrostatic energy storage film capacitor research, but the energy storage performance of pure polyvinylidene fluoride is poor. In order to improve its energy storage performance, it is often compounded with other inorganic materials. For example, Yao et al. synthesized BaTiO with a core-shell structure 3 @TiO 2 , combined with P(VDF-HFP) to form a composite material, and obtained 12.2J / cm at 340mV / m electric field strength 3 The released energy density of ; Zhang et al. used BZCT@SiO 2 Nanofiber modified PVDF, the composite material obtained 18.9J / cm under the electric field strength of 576mV / m 3 release energy density and energy storage efficiency of 53%; however, the energy storage efficiency and energy density of composite materials modified by this method are still low

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
  • Polymethyl methacrylate/polyvinylidene fluoride composite material as well as preparation method and application thereof
  • Polymethyl methacrylate/polyvinylidene fluoride composite material as well as preparation method and application thereof
  • Polymethyl methacrylate/polyvinylidene fluoride composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The invention provides a preparation method of polymethyl methacrylate / polyvinylidene fluoride composite material, comprising the steps of:

[0045] (1) polymethyl methacrylate and organic solvent are mixed to obtain sol A;

[0046] (2) mixing polyvinylidene fluoride with an organic solvent to obtain sol B;

[0047] (3) mixing the sol B obtained in the step (2) with the sol A obtained in the step (1) to obtain a blended sol;

[0048] (4) Film-forming treatment is carried out after the blended sol obtained in the step (3) is coated to obtain a polymethyl methacrylate / polyvinylidene fluoride composite material;

[0049] The steps (1) and (2) are not in sequence.

[0050] The present invention mixes polymethyl methacrylate and an organic solvent to obtain sol A.

[0051] In the present invention, the organic solvent preferably includes N,N-dimethylformamide or N,N-dimethylacetamide.

[0052] In the present invention, the mass of the polymethyl methacrylate and the volu...

Embodiment 1

[0079] (1) Add polymethyl methacrylate particles to N, N-dimethylformamide, magnetic stirring makes polymethyl methacrylate dissolve completely, obtains sol A, wherein the quality of polymethyl methacrylate and The volume ratio of N,N-dimethylformamide is 1g:6.7mL, the stirring rate is 950rpm, the stirring time is 2.5h, and the stirring temperature is 30°C;

[0080] (2) Add polyvinylidene fluoride powder to N, N-dimethylformamide, and magnetically stir to completely dissolve polyvinylidene fluoride to obtain sol B, wherein the quality of polyvinylidene fluoride and N, N-di The volume ratio of methylformamide is 1g:5mL, the stirring rate is 950rpm, the stirring time is 1h, the stirring temperature is 25°C, and the addition rate of polyvinylidene fluoride is 0.03g / min;

[0081] (3) Add sol B to sol A, stir magnetically for 7 hours at a stirring rate of 950rpm, and let it stand for 12 hours to obtain a blended sol, wherein the addition rate of sol B is 0.5mL / min, and the polyform...

Embodiment 2

[0092] (1) Add polymethyl methacrylate particles to N, N-dimethylformamide, magnetic stirring makes polymethyl methacrylate dissolve completely, obtains sol A, wherein the quality of polymethyl methacrylate and The volume ratio of N,N-dimethylformamide is 1g:6.7mL, the stirring rate is 950rpm, the stirring time is 2.5h, and the stirring temperature is 30°C;

[0093] (2) Add polyvinylidene fluoride powder to N, N-dimethylformamide, and magnetically stir to completely dissolve polyvinylidene fluoride to obtain sol B, wherein the quality of polyvinylidene fluoride and N, N-di The volume ratio of methylformamide is 1g:5mL, the stirring rate is 950rpm, the stirring time is 1h, the stirring temperature is 25°C, and the addition rate of polyvinylidene fluoride is 0.03g / min;

[0094] (3) Add sol B to sol A, stir magnetically for 7 hours at a stirring rate of 950rpm, and let it stand for 12 hours to obtain a blended sol, wherein the addition rate of sol B is 0.5mL / min, and the polyform...

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
Thicknessaaaaaaaaaa
Breakdown field strengthaaaaaaaaaa
Breakdown field strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a polymethyl methacrylate / polyvinylidene fluoride composite material as well as a preparation method and application thereof, and belongs to the technical field of energy storage materials. The preparation method comprises the steps of mixing polymethyl methacrylate sol A and polyvinylidene fluoride sol B to obtain blended sol; and carrying out film forming treatment after film coating, and obtaining the polymethyl methacrylate / polyvinylidene fluoride composite material. Polymethyl methacrylate is adopted to modify polyvinylidene fluoride, so that the dielectric loss and residual polarization of PVDF are greatly reduced, the breakdown field strength and maximum electric displacement of the composite material are improved, and the energy storage characteristic of the composite material is comprehensively improved. The result of the embodiment shows that the breakdown field strength of the prepared composite material reaches 850 MV / m, the released energy density reaches 27.64 J / cm < 3 >, the energy storage efficiency is greater than 70%, the dielectric loss is as low as 0.03, the remanent polarization is less than 1.6 mu C / cm < 2 >, and the maximum electric displacement reaches 9.05 mu C / cm < 2 >.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, in particular to a polymethyl methacrylate / polyvinylidene fluoride composite material and a preparation method and application thereof. Background technique [0002] Electrostatic energy storage film capacitors have the advantages of ultra-high power density, fast energy transmission speed, long-term charge-discharge cycle life, etc., and are widely used in modern electronics and electrical fields, such as hybrid electric vehicles, photovoltaic systems, wind turbines, insulation gate bipolar transistors, etc. [0003] At present, polyvinylidene fluoride is the commonly used polymer medium for electrostatic energy storage film capacitor research, but the energy storage performance of pure polyvinylidene fluoride is poor. In order to improve its energy storage performance, it is often compounded with other inorganic materials. For example, Yao et al. synthesized BaTiO with a core-...

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): C08L27/16C08L33/12C08J5/18H01G4/18H01G4/33
CPCC08J5/18H01G4/33H01G4/18H01G4/186C08J2327/16C08J2433/12
Inventor 高亮
Owner 高亮
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