Polymer-sylvite-carbon nanotube composite membrane material and preparation method thereof

A technology of carbon nanotube composite and carbon nanotube, which is applied in the field of high dielectric composite film materials, achieves the effect of low cost, simple process and convenient large-scale industrial production

Inactive Publication Date: 2012-08-22
SICHUAN UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2007, Chen et al. reported adding acetylene black (AB) to PVDF, using DMF as a solvent, and using a PVDF / AB composite membrane material made by dipping and pulling, which has a dielectric constant of about 50 at 1kHz, but Compared with high dielectric ceramics and bulk composite materials, there is still a big gap

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
  • Polymer-sylvite-carbon nanotube composite membrane material and preparation method thereof
  • Polymer-sylvite-carbon nanotube composite membrane material and preparation method thereof
  • Polymer-sylvite-carbon nanotube composite membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The polymer polyvinylidene fluoride, potassium carbonate, and carbon nanotubes are weighed according to their mass ratio of 0.69:0.3:0.01 as raw materials, and the weighed raw materials are placed in a nylon ball mill tank, using absolute ethanol as a medium, in a conventional ball mill Go up the ball mill for 16 hours, take out the slurry after ball milling and dry it in a constant temperature drying oven at 80°C to form a mixed powder; add 20ml of organic solvent N,N-dimethylformamide (DMF ) to obtain a mixed liquid; heat the mixed liquid to 50°C on a magnetic stirrer, stir to dissolve PVDF completely; then use an ultrasonic oscillator to ultrasonically vibrate to K 2 CO 3 and carbon nanotubes are evenly dispersed in the mixed liquid to obtain a composite liquid, and then the obtained composite liquid is poured on a flat glass sheet cleaned by deionized water and absolute ethanol to make it evenly cast; the glass loaded with the composite liquid Place the sheet in a ...

Embodiment 2

[0040] The polymer polyvinylidene fluoride, potassium carbonate, and carbon nanotubes are weighed according to their mass ratio of 0.89:0.01:0.1, and the weighed raw materials are placed in a nylon ball mill tank, and absolute ethanol is used as a medium, in a conventional ball mill Ball mill for 24 hours, take out the ball-milled slurry and dry it in a constant temperature drying oven at 80°C, add 10ml of organic solvent N, N-dimethylformamide (DMF) to the dried mixed powder to obtain a mixed Liquid, heat the mixed liquid to 70°C on a magnetic stirrer, stir to completely dissolve the PVDF in the mixed liquid; then use an ultrasonic cleaner to ultrasonically vibrate to K 2 CO 3 and carbon nanotubes are uniformly dispersed in the mixed liquid to obtain a composite liquid, and then the obtained composite liquid is poured on a flat glass sheet cleaned by deionized water and absolute ethanol to make it uniformly cast; the glass loaded with the composite liquid Place the sheet in ...

Embodiment 3

[0044] The polymer polyvinylidene fluoride, potassium carbonate, and carbon nanotubes are weighed according to their mass ratio of 0.58:0.4:0.02, and the weighed raw materials are placed in a nylon ball mill tank, and absolute ethanol is used as a medium to grind the raw materials in a conventional ball mill Ball milled for 6 hours; the slurry after ball milling was taken out and dried in a constant temperature drying oven at 80°C, and 15ml of organic solvent N, N-dimethylformamide (DMF) was added to the dried mixed powder to obtain a mixed liquid; heat the mixed liquid to 80°C on a magnetic stirrer, stir to completely dissolve the PVDF in the mixed liquid; then use an ultrasonic cleaner to ultrasonically vibrate to K 2 CO 3 and carbon nanotubes are uniformly dispersed in the mixed liquid to obtain a composite liquid, and then the obtained composite liquid is poured on a flat glass sheet cleaned by deionized water and absolute ethanol to make it uniformly cast; the glass loade...

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
relative permittivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polymer-sylvite-carbon nanotube composite membrane material and a preparation method thereof. The method includes weighing and mixing polymer polyvinylidene fluoride, sylvite and carbon nano tube raw materials according to a designed mass ratio; adding organic solvent into the mixture to obtain mixed liquor, pouring the mixed liquor onto a clean flat glass sheet uniformly, disposing the clean flat glass sheet to evaporate the organic solvent to obtain polymer-sylvite-carbon nano tube composite membrane material with the thickness of 50-150mu m. The relative dielectric constant of the polymer-sylvite-carbon nano tube composite membrane material can be up to 103-106 at the frequency of 1 kHz. The polymer-sylvite-carbon nanotube composite membrane material has wide application prospect and can be applied to polymer electrolytic membranes and the like.

Description

technical field [0001] The invention relates to a composite membrane material and its preparation technology, in particular to a polymer polyvinylidene fluoride (PVDF)-potassium salt-carbon nanotube composite membrane material with a high dielectric constant and its preparation method, belonging to high The field of dielectric composite film materials. Background technique [0002] Due to its excellent dielectric properties, high dielectric materials have broad application prospects in solid capacitors and microwave dielectric components, such as: dynamic random access memory, high-power capacitors, etc. And high dielectric ceramics, such as CaCu 3 Ti 4 o 12 Due to its good dielectric properties, it has been widely valued. However, although high-dielectric ceramics have good dielectric properties, they are relatively brittle and require extremely high preparation temperatures, which limits their applications, especially in integrated circuits. [0003] However, high die...

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 Applications(China)
IPC IPC(8): C08J5/18C08L27/16C08K7/00C08K3/04C08K3/26C08K5/098C08K3/16
Inventor 朱基亮郑茂梅汪忠兴孙平曾子繁朱波王明松刘静梁爽
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap