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

Preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density

A technology of polyvinylidene fluoride and high energy storage density, which is applied in the field of graft polymerization modification, which can solve the problems of reduced energy storage density of polymers, and achieve the effects of low usage content, simple operation, easy control, and easy purification

Active Publication Date: 2016-05-04
无锡鑫聚电子科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, it has been reported that the method of grafting polystyrene (PS) with P(VDF-TrFE-CTFE) or P(VDF-CTFE) significantly reduces the energy loss of the polymer, but at the same time the energy storage density of the polymer It is also greatly reduced, and it is not an ideal dielectric material to meet high energy storage needs

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
  • Preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density
  • Preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density
  • Preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density comprises the following steps:

[0024] Step 1. Add the polymer raw material in the three-necked flask, and add the catalyst, the ligand and the reducing agent at the same time. After the mixture is evacuated and nitrogen-filled for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer is 25:1; Stir fully, and after the polymer is completely dissolved, move the reaction bottle into an oil bath, and heat up to the required reaction temperature of 100°C. The monomer was added with a syringe, the mass ratio of monomer to polymer was 1.5:1, and the polymerization stopped after 2 hours.

[0025] The polymer raw material is poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethylene) P(VDF-TrFE-CTFE), and the molar ratio VDF / TrFE / CTFE=80 / 15 / 5.

[0026] The catalyst is cuprous chloride (CuCl).

[0027] The mo...

Embodiment 2

[0038] The preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density comprises the following steps:

[0039] Step 1. Add the polymer raw material in the three-necked flask, and add the catalyst, the ligand and the reducing agent at the same time. After the mixture is evacuated and nitrogen-filled for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer is 25:1; Stir well, and after the polymer is completely dissolved, move the reaction bottle into an oil bath and heat up to the required reaction temperature of 100°C; add monomer with a syringe, and the mass ratio of monomer to polymer is 1.5:1 , the polymerization stopped after 2 hours.

[0040]The polymer raw material is poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethylene) P(VDF-TrFE-CTFE), and the molar ratio VDF / TrFE / CTFE=80 / 15 / 5.

[0041] The catalyst is cuprous chloride (CuCl).

[0042] The molar ratio of ...

Embodiment 3

[0054] The preparation method of polyvinylidene fluoride-based graft modified polymer with high energy storage density comprises the following steps:

[0055] Step 1. Add the polymer raw material in the three-necked flask, and add the catalyst, the ligand and the reducing agent at the same time. After the mixture is evacuated and nitrogen-filled for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer is 25:1; Stir fully, and after the polymer is completely dissolved, move the reaction bottle into an oil bath, and heat up to the required reaction temperature of 100°C. Add monomer with a syringe, the mass ratio of monomer to polymer is 1.5:1, and the polymerization reaction stops after a certain period of time.

[0056] The polymer raw material is poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethylene) P(VDF-TrFE-CTFE), and the molar ratio VDF / TrFE / CTFE=80 / 15 / 5.

[0057] The catalyst is cuprous chloride (CuCl).

...

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

A preparation method of high energy storage density and polyvinylidene fluoride group grafted modified polymer comprises following steps: adopting N-methyl 2 pyrrolidone as the solvent, taking cuprous chloride, 2,2-dipyridine and copper as the catalytic system, poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethene) P(VDF-TrFE-CTFE) as the raw material, and polymethacrylate as the graft monomer to synthesize poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethene) P(VDF-TrFE-CTFE) grafted polymethacrylate copolymer. The preparation method has the advantages of simple and controllable operation, low using amount of catalyst and easy purification of polymer.

Description

technical field [0001] The invention relates to a new graft polymerization modification method of a polyvinylidene fluoride (PVDF)-based fluoropolymer, in particular to a preparation method of a high energy storage density polyvinylidene fluoride-based graft modified polymer. Background technique [0002] Polyvinylidene fluoride (PVDF) and its binary / terpolymer (P(VDF-TrFE) or P(VDF-CTFE) or (PVDF-TrFE-CTFE)) are placed due to their high dielectric constant High hopes for a new generation of high energy storage capacitor dielectric materials. Compared with the current commercial biaxially oriented polypropylene (BOPP) polymer film, polyvinylidene fluoride-based fluoropolymer as a polar polymer has a high electric field polarization value and a relatively high breakdown electric field . However, its typical ferroelectric characteristics make it have a high remanent polarization value and most of the stored charges cannot be effectively released. To this end, the researcher...

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): C08F259/08C08F220/14C08F220/18C08J5/18
Inventor 张志成李俊杰
Owner 无锡鑫聚电子科技有限公司
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