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

High-dielectric composite material containing carbon nanotube fluids (CNTFs)

A technology of carbon nanotubes and composite materials, applied in circuits, insulators, electrical components, etc., can solve the problems of unsatisfactory physical compatibility, difficult dispersion of carbon nanotubes, and poor environmental protection, so as to shorten the preparation time. , Good compatibility and easy processing

Inactive Publication Date: 2011-06-01
HENAN UNIV OF URBAN CONSTR
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the dielectric constant of the carbon nanotube / polyvinylidene fluoride / barium titanate system in CN1432598A is greater than 450, and the dielectric constant of the functionalized carbon nanotube / polyvinylidene fluoride film material in CN200810018851.3 reaches 1000, but the former is due to Carbon nanotubes are difficult to disperse, and the phase compatibility is not ideal. Due to the use of solvent ultrasonic dispersion method, the preparation time of the latter is long, the environmental protection is not good, and only thin film materials can be prepared, so the use will be limited

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 composite material containing carbon nanotube fluids (CNTFs)
  • High-dielectric composite material containing carbon nanotube fluids (CNTFs)
  • High-dielectric composite material containing carbon nanotube fluids (CNTFs)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 1 g of PZT and grind and mix them with different weights of carbon nanotube fluid I (0.04 g, 0.06 g, 0.08 g, 0.10 g, 0.13 g, 0.16 g, 0.185 g) for 20 min, and press them on a tablet machine. The sheet condition is 10 MPa / 60 ℃ / 20 min, and a series of samples of high dielectric composite materials containing carbon nanotube fluids are prepared, and the variation curve of the dielectric constant with frequency is measured as follows: figure 2 shown.

Embodiment 2

[0028] 1 g of PZT was ground and mixed with different weights of carbon nanotube fluid II (0.06 g, 0.08 g, 0.10 g) for 20 min, and pressed on a tablet machine under the condition of 10 MPa / 60 °C / 20 min. A series of samples of high dielectric composite materials containing carbon nanotube fluids were obtained, and the variation curve of the dielectric constant with frequency was measured as follows: image 3 shown.

Embodiment 3

[0030] 1 g of PZT was mixed with different weights of carbon nanotube fluid III (0.015 g, 0.02 g, 0.04 g, 0.11 g, 0.18 g) for 20 min, and pressed on a tablet machine under the condition of 15 MPa / 50 ℃ / 20 min, a series of samples of high dielectric composite materials containing carbon nanotube-like fluids were prepared respectively, and the variation curves of the dielectric constant with frequency were measured as follows: Figure 4 shown.

[0031] In summary, it is obvious that from the various embodiments and corresponding drawings, the dielectric constant of the present invention is high, all above 250, and by selecting different carbon nanotube fluids and adjusting the relative content of the added components, it can The dielectric constant and flexibility of the material can be obviously changed, which can meet the needs of different occasions respectively, and has wide application prospects.

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
lengthaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-dielectric composite material containing carbon nanotube fluids (CNTFs). The composite material comprises the following components in percentage by volume: 10 to 70 percent of CNTFs and 30 to 90 percent of plumbum-based zirconate titanate (PZT), wherein the outer diameters of the CNTFs are between 10 and 60 nanometers; the lengths of the CNTFs are between 0.5 and 5 mu m; the particle size of the PZT is between 0.1 and 5 mu m; and the composite material is prepared by burdening, blending and hot forming. The obtained composite material has high flexibility, a high dielectric constant and high phase compatibility; in the added CNTFs, the surface of a carbon nanotube (CNT) material is grafted with an organic layer, so that dispersity and compatibility are enhanced; the composite material is easy to process; the added CNTFs have a similar fluid rheological behavior in the absence of solvent and can be directly molded by pressing by adopting a hot pressing method, so that preparation time is shortened; and different CNTFs can be selected and relative content of added components is regulated, so that the dielectric constant and the flexibility of the material can be changed remarkably and the requirements on different occasions can be met respectively.

Description

technical field [0001] The invention relates to a high dielectric composite material, in particular to a high dielectric composite material containing carbon nanotube fluid. Background technique [0002] New dielectric materials with high dielectric constant have important application prospects in information technology, microelectronics, power engineering, national defense technology and other fields. Conventional dielectric materials, such as ferroelectric ceramics and some semiconductive organic solids, are very brittle despite high dielectric constants, and the process is complex and costly. Although traditional polymer materials have many advantages, their dielectric constant is less than 10, which is difficult to be practical. Using organic-inorganic composite technology, filling ceramics, metal powder or other particles in the polymer matrix can also prepare high dielectric materials, among which carbon nanotubes CNF and its derivatives have been successfully used a...

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): H01B3/02H01B19/00
Inventor 雷佑安王要令赵振新
Owner HENAN UNIV OF URBAN CONSTR