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Device and method for characterizing dispersion state of CNTs in polymer composite material

A composite material and dispersed state technology, applied in the direction of analysis materials, measurement devices, test sample preparation, etc., to achieve the effect of short test cycle, good stability and easy operation

Inactive Publication Date: 2020-08-25
甘海半导体材料(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the current situation that carbon nanotubes cannot accurately and quickly characterize their dispersion state in the application field of polymer composite materials, the present invention provides a device and method that can easily and stably realize non-destructive and rapid characterization of samples

Method used

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  • Device and method for characterizing dispersion state of CNTs in polymer composite material
  • Device and method for characterizing dispersion state of CNTs in polymer composite material
  • Device and method for characterizing dispersion state of CNTs in polymer composite material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 device

[0050] A device for characterizing the dispersed state of CNTs in a polymer composite material, comprising a sample tube 13, the sample tube 13 is arranged in a sample heating and holding device 11, the sample heating and holding device 11 is provided with an inert gas inlet 3, and the sample is heated and kept The device 11 is a cylindrical or hemispherical or pear-shaped hollow testing device, which can realize heating and heat preservation functions. The heating and heat preservation forms of the sample heating and heat preservation device 11 are electric heating of heat transfer oil in the jacket or electric heating of ceramic furnace tiles, preferably The heat conduction oil in the jacket is electrically heated.

[0051] Also be provided with the supersonic heating device of sample auxiliary heating, this supersonic heating device comprises supersonic generator 4, and this supersonic generator 4 is arranged around the sample heating and heat p...

Embodiment 2

[0054] Embodiment 2: Characterize the method for the dispersed state of CNTs in polymer composite material

[0055] (1) to test device inspection, content is the preparation of the natural rubber masterbatch sample of 15 parts of multi-wall array carbon nanotubes;

[0056] (2) Cut the sample into small pieces and put it into 1 / 2-2 / 3 of the ceramic sample tube to ensure that the test can scan to the sample position;

[0057] (3) Put the ceramic sample tube into the sample heating and heat preservation detection area, turn on the argon atmosphere, set the heating temperature to 170°C, turn on the ultrasonic heating device, and adjust the frequency to 45KHz;

[0058] (4) After heating the sample in the ceramic sample tube for 10 minutes to a fluid state, stop heating and keep warm;

[0059] (5) After the sample is excited by the radio frequency transmitter, the signal and the signal amplifier are collected and amplified by the signal detector, and finally the graphics and parame...

Embodiment 3

[0063] Embodiment 3: the method for characterizing the dispersed state of CNTs in polymer composite material

[0064] (1) to test device inspection, single-walled carbon nanotube mass fraction is 0.3% styrene-butadiene rubber sample preparation;

[0065] (2) Cut the sample into small pieces of 5mm*5mm and put them into 1 / 2-2 / 3 of the ceramic sample tube to ensure that the test can scan to the sample position;

[0066] (3) Put the ceramic sample tube into the sample heating and heat preservation detection area, turn on the nitrogen atmosphere, set the heating temperature to 105°C, turn on the ultrasonic heating device, and adjust the frequency to 60KHz;

[0067] (4) After heating the sample in the ceramic sample tube for 8 minutes to a fluid state, stop heating and keep warm;

[0068] (5) After the sample is excited by the radio frequency transmitter, the signal and the signal amplifier are collected and amplified by the signal detector, and finally the graphics and parameters...

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Abstract

The invention belongs to the technical field of carbon nanotube dispersion state characterization, and particularly relates to a device and method for characterizing a dispersion state of CNTs in a polymer composite material. The device comprises a sample tube which is arranged in a sample heating and heat preservation device, wherein the sample heating and heat preservation device is provided with an inert gas inlet; an ultrasonic heating device for heating the sample in an auxiliary manner; a signal detection device which is used for detecting sample signals and is connected with a display terminal through a wire, wherein the display terminal is connected with a power supply through a wire; a radio frequency transmitter which is perpendicular to the scanning coil. The scanning coil is connected with a scanning generator, and a magnet is arranged in the scanning coil. The device can be used for quickly analyzing and characterizing the dispersion state of the carbon nanotube filler inpolymer composite materials such as rubber and plastic in a lossless manner; the device is not limited by the concentration of the carbon nanotube filler, and is simple and convenient to operate and high in stability.

Description

technical field [0001] The invention belongs to the technical field of characterizing the dispersed state of carbon nanotubes, and specifically relates to a device and method for characterizing the dispersed state of CNTs in a polymer composite material. The principle of nuclear magnetic resonance is used to excite the hydrogen nuclei in the polymer material with an external magnetic field. A device and method for judging the dispersion state of carbon nanotubes by collecting and analyzing parameters such as relaxation time and relaxation rate. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes have excellent physical and mechanical properties. They are mainly coaxial circular tubes with several to dozens of layers of carbon atoms arranged in a hexagonal shape. It has a very large aspect ratio, the diameter is usually between 1-100nm, and the length is several microns to hundreds of microns. It is because of its sp 2 Structure and huge aspect...

Claims

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Application Information

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IPC IPC(8): G01N24/08G01N1/28G01N1/44
CPCG01N1/286G01N1/44G01N24/08G01N2001/2873
Inventor 王莲莲耿磊李岩蒋兴华白文娟楚电明周勇
Owner 甘海半导体材料(上海)有限公司
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