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Characterization method of phase dispersing uniformity of composite material

A composite material and homogeneity technology, which is used in analytical materials, measuring devices, instruments, etc., to achieve the effects of sensitive experimental results, simple experimental procedures, and good promotion prospects.

Inactive Publication Date: 2012-06-27
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a simple, easy-to-implement, and wide-ranging applicable system for the characterization of the phase uniformity of composite materials in view of the limitations of the above-mentioned technology relying on large-scale instruments such as TEM and the complexity of the experimental process. method

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  • Characterization method of phase dispersing uniformity of composite material
  • Characterization method of phase dispersing uniformity of composite material
  • Characterization method of phase dispersing uniformity of composite material

Examples

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Embodiment 1

[0037] Nano titanium dioxide modified polyimide (TiO2) with a mass fraction of 1% 2 / PI) composite material as the test object. For the convenience of comparison, the composite materials TP1 and TP2 with two dispersion degrees were tested respectively. Made of TiO in the size of Φ34mm×Φ25mm×7mm 2 / PI composite material sample, the material of the pair is 45 # Steel, the friction pattern is ring-ring. Use 600 before the test # Grind and polish the sample and counterpart with alumina water-resistant sandpaper, and clean it with acetone. Then put the sample and the counter piece into the MPX-2000 friction and wear testing machine respectively, set the load at 0.5MPa, and the speed at 0.5m / s. Turn on the testing machine and online recording software, and record the curve of friction coefficient changing with time in real time. End the experiment and save the data after 2 hours of testing. The uniformity of the dispersed phase of the composite was analyzed by the curve of th...

Embodiment 2

[0041] With the mass fraction being 5% nano-alumina modified polypropylene (Al 2 o 3 / PP) composite material as the test object. Made of Al in the size of 5mm×5mm×7mm 2 o 3 / PP composite material sample, the material of the counterpart is aluminum, and the friction form is disc-pin type. Use 600 before the test # Grind and polish the sample and counterpart with alumina water-resistant sandpaper, and clean it with acetone. Then put the sample and the counterpart into the MPX-2000 friction and wear testing machine respectively. Set the load to 0.3MPa and the speed to 0.5m / s. Turn on the testing machine and online recording software, record the friction coefficient change curve in real time, end the experiment and save the data after 2 hours of testing.

[0042] al 2 o 3 The curve of friction coefficient of / PP composite material changing with time is as follows Figure 4 shown. It can be seen from the figure that the friction coefficient curve has a high friction coef...

Embodiment 3

[0044] The nano-silicon carbide modified aluminum (SiC / Cu) composite material with a mass fraction of 6% was used as the test object. The SiC / Cu composite material sample is made according to the size of 3cm×3cm×4cm, the material of the counter piece is nickel-cadmium alloy, and the friction form is ring-block type. Use 600 before the test # Grind and polish the sample and counterpart with alumina water-resistant sandpaper, and clean them with ethanol. Then put the sample and the counter ring into the MMW-1A multifunctional friction and wear testing machine produced by Zhongjingke Technology Co., Ltd. respectively. Set the load to 10MPa and the rotational speed to 5m / s. Turn on the testing machine and online recording software, record the friction coefficient change curve in real time, end the experiment and save the data after 2 hours of testing.

[0045] The friction coefficient of SiC / Cu composite material changes with time as shown in Figure 5 shown. It can be seen f...

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Abstract

The invention relates to a characterization method of phase dispersing uniformity of a composite material. According to the dependency relation between the composition, the content, especially the uniformity of a dispersed phase and material friction coefficient curve variation in the friction process of the composite material, the method judges the uniformity of the dispersed phase in composite material with a certain amount and a certain type of modified dispersed phase by detecting a variation curve of a friction coefficient along with time in the friction process of the composite material. The invention has wide application system and can be suitable for various composite material systems of a metal matrix, a ceramic matrix, a polymer matrix and the like, in particular to a polymer nano-composite material system. Relative to the traditional characterization technology, the invention can dynamically and continuously detect a dispersing state of the dispersed phase and a distribution condition of the dispersed phase in whole matrix materials, has the advantages of simple used experimental device, easy implementation, convenient and rapid experiment process as well as sensitive and accurate experiment result and is suitable for laboratory development and industrial production.

Description

technical field [0001] The invention relates to a method for characterizing the phase dispersion uniformity of a composite material, in particular to a method for characterizing the phase dispersion uniformity of a composite material with a friction coefficient curve. Background technique [0002] In recent years, due to its excellent performance, composite materials have gradually replaced traditional metals and other materials, and are widely used in aerospace, automobile, construction and other fields. Usually composite materials are based on one material, and the matrix material is modified by adding a small amount of dispersed phase. The dispersion and distribution of the dispersed phase in the matrix material will directly affect the properties of the composite material. Especially for composite materials modified by nano-scale dispersed phase, when the nano-dispersed phase agglomerates seriously, it will even have a negative effect on the performance of the material....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
Inventor 黄培杨长城
Owner NANJING TECH UNIV