Determination method for dispersibility of carbon nano-tubes in resin

A carbon nanotube and determination method technology, applied in nanotechnology, measuring device, particle size analysis and other directions, can solve the problems of cumbersome sample preparation, long detection period, difficult real-time detection, etc., to overcome the cumbersome steps, reduce the test cost, The effect of the simple and easy measurement process

Active Publication Date: 2013-08-21
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of SEM to detect dispersion must be performed after the resin is cured, brittle, and the surface is sprayed with gold. The detection cycle is long and the sample preparation is cumbersome, so it is difficult to achieve fast and direct real-time detection.

Method used

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  • Determination method for dispersibility of carbon nano-tubes in resin
  • Determination method for dispersibility of carbon nano-tubes in resin
  • Determination method for dispersibility of carbon nano-tubes in resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step (1), using different methods to prepare epoxy resin with a mass percentage of carbon nanotubes of 1%, including mechanical stirring, ultrasonic dispersion, and shear dispersion, among which three different methods of mechanical stirring, ultrasonic dispersion, and shear dispersion The process conditions were changed respectively, and a total of 9 kinds of epoxy resins with a mass percentage of carbon nanotubes of 1% were prepared as the resins to be tested, numbered 1-9. The carbon nanotubes are multi-walled carbon nanotubes modified by carboxylation.

[0046] Step (2), first clean the surface of the scraper fineness meter and place it stably, pour the epoxy resin numbered 1 with a mass percentage of carbon nanotubes of 1% into the bottom of the groove of the scraper fineness meter. The specification of the scraper fineness meter is 0-100μm.

[0047] Step (3), the two-handed scraper blade is pressed longitudinally to the groove of the scraper fineness meter at an an...

Embodiment 2

[0052] Step (1) to step (6) are the same as in Example 1.

[0053] Step (7), change the mass percentage of carbon nanotubes in the epoxy resin to be tested to 1.5%, 2%, 3%, 4%, and 5%, repeat steps (1) to (5), and measure A series of data of fineness A and dispersibility B, obtain the relationship curve of fineness A changing with dispersibility B when the content of carbon nanotubes in a group of epoxy resins to be tested is different (comprising 1 in embodiment 1, altogether 6 curves). Such as image 3 Shown is a set of relationship curves in which the fineness A varies with the dispersion B in Example 2 of the present invention.

[0054] In practical applications, for example, given the epoxy resin to be tested with a carbon nanotube content of 3%, follow the above steps (1) to (3) to first measure the fineness A of the epoxy resin 2 , and then find a curve corresponding to an epoxy resin with a carbon nanotube content of 3% from the relationship curve in step (7), and o...

Embodiment 3

[0056] Step (1), using different methods to prepare vinyl ester resins with a mass percentage of carbon nanotubes of 3%, including mechanical stirring, ultrasonic dispersion, and shear dispersion, wherein three different methods of mechanical stirring, ultrasonic dispersion, and shear dispersion In the method, the process conditions were changed respectively, and a total of six kinds of vinyl ester resins with a mass percentage of carbon nanotubes of 3% were prepared as the resins to be tested, numbered 1-6. Wherein the carbon nanotubes are multi-walled carbon nanotubes modified by hydroxylation.

[0057] Step (2), first clean the surface of the scraper fineness meter and place it stably, and pour the vinyl ester resin numbered 1 with a carbon nanotube mass percentage of 3% into the bottom of the groove of the scraper fineness meter. The specification of the scraper fineness meter is 0-150μm.

[0058] Step (3), the two-handed scraper blade is pressed longitudinally against th...

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Abstract

The invention relates to a determination method for dispersibility of carbon nano-tubes in resin. The determination method adopts a scraper fineness meter for determining the fineness of the resin to obtain the dispersibility of the carbon nano-tubes in the resin. Specifically, a series of relationship curves are found by determining the fineness and dispersibility numerical values under the condition of different types of resin and different contents of the carbon nano-tubes, thus establishing the corresponding relationship between the scraper fineness and the dispersibility of each carbon nano-tube. In actual tests, the corresponding dispersibility can be found only by determining the fineness of resin to be tested with reference to the relationship curves. The determination method overcomes the disadvantages of tedious steps, long cycle, incapability of quantification and poor accuracy in a conventional dispersibility determination method, so that the determination process is easy, convenient and feasible, the testing cycle is shortened, the testing cost is reduced, and the determination method has the advantages of rapidness, directness, accuracy and the like and has strong practicability.

Description

technical field [0001] The invention relates to a method for measuring the dispersibility of carbon nanotubes in resin, and belongs to the technical field of composite material molding technology. Background technique [0002] Carbon nanotubes, as one-dimensional nanomaterials, have excellent mechanical, electrical and thermal properties. In recent years, it has been more and more used in the field of resin-based composite materials. As a collective internal additive, it can improve the collective bending, impact resistance, electrical and thermal properties. The dispersion of carbon nanotubes in the resin directly affects the performance and life of the final product. Therefore, it is very important to evaluate the dispersion of carbon nanotubes in the resin. [0003] The size of a single carbon nanotube is at the nanometer level, and the size of the aggregated carbon nanotubes is also at the micron level. Therefore, the most effective way to detect the dispersion of carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/02B82Y35/00
Inventor 邓火英魏晗兴谭珏陈名海蒋文革李清文
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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