Method for improving dielectric constant of polypropylene film

A polypropylene film, high dielectric constant technology, applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc. problems, to achieve the effect of improving interface compatibility, increasing dielectric constant, and multi-contact area

Active Publication Date: 2020-09-01
STATE GRID CORP OF CHINA +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method for improving the dielectric constant of polypropylene film to solve the problem of agglomeration easily occurring in the prior art when fillers with high dielectric constant

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
  • Method for improving dielectric constant of polypropylene film
  • Method for improving dielectric constant of polypropylene film
  • Method for improving dielectric constant of polypropylene film

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1:

[0033] In this embodiment, a method for increasing the dielectric constant of a polypropylene film is provided, and the method includes the following steps:

[0034] S1 puts the high-dielectric constant composite filler in a spheroidizing device that is passed into a DC arc plasma flame flow, and spheroidizes under the action of surface tension to obtain an average particle size of 95-270nm and an average pore diameter of 350- 650nm spheroidized high dielectric constant composite filler, and the temperature in the spheroidizing device is 45-200°C; the high dielectric constant composite filler includes a volume ratio of 1-4:1-2:2 -7: 1-4 ceramic particles, barium titanate, carbon nanotubes, titanium dioxide; compounding a specific proportion of high dielectric constant components not only plays a role in synergistically increasing the dielectric constant of polypropylene film, but also ensures The mechanical properties of the polypropylene film reduce the dielec...

Example Embodiment

[0041] Example 2:

[0042] This embodiment should be understood to include all the features of the foregoing embodiment and further optimize on the basis of it. Therefore, this embodiment provides a method for increasing the dielectric constant of a polypropylene film. The method includes the following steps:

[0043] S1 puts the high-dielectric constant composite filler in a spheroidizing device with a direct current arc plasma flame flow, and spheroidizes under the action of surface tension to obtain a spheroidized with an average particle diameter of 95nm and an average pore diameter of 350nm Compound filler with high dielectric constant;

[0044] S2 After surface treatment and pre-dispersion treatment of the spheroidized high dielectric constant composite filler under the assist of microwave, it is added to the process of preparing polypropylene film to increase the dielectric constant of the polypropylene film, and In this embodiment, the high dielectric constant composite fill...

Example Embodiment

[0050] Example 3:

[0051] This embodiment should be understood as including all the features of any of the foregoing embodiments and further optimized on the basis of it. Therefore, in this embodiment, a method for increasing the dielectric constant of a polypropylene film is provided. The method includes The following steps:

[0052] S1 heats the high-permittivity composite filler in a spheroidizing device with a direct current arc plasma flame flow, and spheroidizes under the action of surface tension to obtain spheres with an average particle diameter of 270nm and an average pore diameter of 650nm The high dielectric constant composite filler, and the heating temperature is 200°C; the high dielectric constant composite filler includes ceramic particles, barium titanate, carbon nanotubes, and titanium dioxide in a volume ratio of 4:1:7:4 ;

[0053] S2 After surface treatment and pre-dispersion treatment of the spheroidized high dielectric constant composite filler under the assi...

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
The average particle sizeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for improving the dielectric constant of a polypropylene film. The method comprises the following steps of: putting a composite filler with a high dielectric constant into a spheroidizing device into which a direct-current arc plasma flame flow is introduced, and spheroidizing under the action of surface tension to obtain a spheroidized high-dielectric-constant composite filler with the average particle size of 95-270nm and the average pore size of 350-650nm; and carrying out surface treatment and pre-dispersion treatment on the spheroidized high-dielectric-constant composite filler under the assistance of microwaves, and adding the filler to the polypropylene film preparation process. The problem of easy agglomeration of the filler can be solved on the premise of the guaranteeing of the mechanical property of the polypropylene film, the dielectric constant of the polypropylene film can be improved, the dielectric loss is low, the breakdown field intensity is more than 430 KV/mm, and better application reliability can be obtained in the actual application.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for increasing the dielectric constant of a polypropylene film. Background technique [0002] Polymer-based composite dielectric materials have attracted the attention of researchers because of their good mechanical properties, processability and insulation properties. At present, polymer-based composite dielectric materials mainly add high-dielectric ceramic materials to the polymer body. However, the disadvantage of this method is that the dielectric constant of the composite material increases slowly with the increase of the filling amount of the ceramic material, and when the filling amount of the ceramic material is too high, it is easy to damage the mechanical properties of the composite material, and the dielectric constant of the obtained polypropylene film The electrical constant is not very high, and the addition of some nanoparticles often has high surface...

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): C08K9/00C08K9/06C08K9/04C08K7/24C08L23/12C08J5/18C09C1/00C09C3/04C09C3/08C09C3/12
CPCC08J5/18C08J2323/12C08K7/24C08K9/00C08K9/04C08K9/06C08K2201/003C08K2201/011C09C1/0084C09C3/006C09C3/04C09C3/048C09C3/08C09C3/12
Inventor 张晨晨丁国成杨海涛吴兴旺尹睿涵朱太云秦少瑞胡啸宇
Owner STATE GRID CORP OF CHINA
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