Unlock instant, AI-driven research and patent intelligence for your innovation.

High-dielectric ceramic/PVDF composite material and preparation method thereof

A composite material and high-dielectric technology, which is applied in the field of composite materials and preparation of high-dielectric ceramics and PVDF, can solve the problems of low dielectric strength and energy storage density limitation, and achieve the effect of increasing the dielectric constant

Active Publication Date: 2018-12-18
XIAN UNIV OF SCI & TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems of low dielectric strength and limited energy storage density in the existing dielectric ceramics, the invention provides a composite material of high dielectric ceramics and PVDF, and the invention also provides a high dielectric ceramics and Preparation method of PVDF composite material

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
  • High-dielectric ceramic/PVDF composite material and preparation method thereof
  • High-dielectric ceramic/PVDF composite material and preparation method thereof
  • High-dielectric ceramic/PVDF composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, prepare the composite material of high dielectric ceramics and PVDF (polyvinylidene fluoride),

[0034] 1) Preparation of ceramic precursor:

[0035] 1.1) Calculate La(N0 3 ) 3 ·6H 2 0. NaNO 3 , Cu(N0 3 ) 2 ·3H 2 O and C 16 h 36 o 4 The amount of Ti required respectively;

[0036] 1.2) Accurately weigh 4.42g of La(N0 3 ) 3 ·6H 2 0 drug and mixed with 20ml of ethanol solution measured in a cylinder, sonicated in an ultrasonic cleaner and stirred with a glass rod until uniformly mixed. Seal it with plastic film to prevent the ethanol solution from volatilizing, and set it aside.

[0037] 1.3) Similarly, on the electronic balance, according to the calculated Cu(N0 3 ) 2 ·3H 2 O Accurately weigh 14.57g of the drug, mix it with 40ml of ethanol solution in a beaker, stir continuously with a glass rod, and then ultrasonically in an ultrasonic cleaner to mix the two evenly. Also seal it with plastic film to prevent the ethanol solution from volat...

Embodiment 2

[0045] Embodiment 2: prepare the composite material of high dielectric ceramics and PVDF, weigh 1.25g La prepared in embodiment 1 0.5 Na 0.5 Cu 3 Ti 4 o 12 The ceramic precursor powder and 1.25g of PVDF were ground continuously in the grinding body for at least 30min to form a LNCTO / PVDF composite film material with a mass fraction of 50wt%.

Embodiment 3

[0046] Embodiment 3: prepare the composite material of high dielectric ceramics and PVDF, take by weighing 1.5g La prepared in embodiment 1 0.5 Na 0.5 Cu 3 Ti 4 o 12 The ceramic precursor powder and 1g of PVDF were ground continuously in the grinding body for at least 30 minutes to form a LNCTO / PVDF composite film material with a mass fraction of 60wt%.

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

The invention relates to a high-dielectric ceramic / PVDF composite material and a preparation method thereof. The preparation method comprises the following steps: preparing a ceramic precursor La<0.5>Na<0.5>Cu<3>Ti<4>O<12> is prepared, and then grinding La<0.5>Na<0.5>Cu<3>Ti<4>O<12> ceramic powder and PVDF in a grinding body for at least 30 minutes to form the LNCTO / PVDF composite film material, wherein the mass fraction of the La<0.5>Na<0.5>Cu<3>Ti<4>O<12> ceramic powder is 40%-60%. In order to solve the technical problems of low dielectric strength and limited storage energy density of dielectric ceramics in the prior art, the preparation method of the invention adopts a sol-gel method to prepare the ceramic precursor powder La<0.5>Na<0.5>Cu<3>Ti<4>O<12> and then prepares the LNCTO / PVDFcomposite film material with a LNCTO ceramic material as a filler particle and a PVDF polymer as a matrix so as to increase the dielectric constant of the PVDF polymer.

Description

technical field [0001] The invention relates to a composite material of high dielectric ceramics and PVDF and a preparation method. Background technique [0002] High dielectric materials have an extremely wide range of roles in our lives, such as cellular phones, filters, and resonators used in communication systems, and provide great possibilities for the miniaturization of electronic devices. Therefore, high dielectric materials have become the focus of scientists' research. We know that electrical energy storage plays an extremely critical role in stationary power systems, hybrid electric vehicles, and mobile electronic devices. Energy storage components that are often seen in life include batteries, dielectric capacitors and electrochemical supercapacitors. Although the high energy storage density of the battery makes it conducive to the development of miniaturized devices, the power is low and it needs to be charged for a long time, so the battery is more suitable fo...

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): C08J5/18C08L27/16C08K3/22
CPCC08J5/18C08J2327/16C08K3/22
Inventor 蔡会武杜月周文英党智敏刘标
Owner XIAN UNIV OF SCI & TECH