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Measuring method of plate-like powder radius-thickness ratio

A measurement method and flake powder technology, applied in the field of measurement, can solve the problems of unrepresentative, orderly arrangement of flake powder, powder shape, damage, etc., and achieve the effect of simple and convenient operation, fast and efficient measurement data

Active Publication Date: 2019-03-19
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the flake structure of the flake powder is not a standard circle, and the thickness of different parts of the flake powder is different, this will also lead to extremely high requirements for the measurement skills of the operator by the crystal optical method, and the measurement results are subject to artificial great influence
The sedimentation method and laser particle size analysis method to measure the particle size of the micro-nano flake powder can not truly reflect the size and distribution of the flakes, but can only roughly reflect the thickness and approximate distribution of the silver powder.
In addition, the epoxy resin method, tablet pressing method, glue boiling method, dispersant drying method, stacking method or semi-stacking method have high requirements for sample preparation operations, and the flaky powder cannot be completely arranged in a horizontal state. Or there is a certain damage to the shape of the powder, which affects the accuracy of the test results
Especially when the powder is dispersed in the liquid, if the ratio of powder to liquid is too high, it will lead to powder aggregation, such as figure 1 As shown, it is difficult to measure the particle size of a single particle, and the ratio of powder to liquid is too low will result in too few particles and not representative

Method used

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  • Measuring method of plate-like powder radius-thickness ratio
  • Measuring method of plate-like powder radius-thickness ratio
  • Measuring method of plate-like powder radius-thickness ratio

Examples

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Effect test

Embodiment 1

[0040] The embodiment of the present invention provides a method for measuring the diameter-thickness ratio of flake powder, such as figure 2 shown, which includes the following steps:

[0041] Step 1: Prepare Paraffin 100.

[0042] Step 2: heating the paraffin 100 to make it melt to form a liquid paraffin 100 with a thickness of 2mm, sprinkle 0.05g flake silver powder on the surface of the liquid paraffin 100, and then place it for 10min to make the flake silver powder 200 in the liquid paraffin The surface of 100 is diffused and arranged horizontally and orderly in a single layer of flaky silver powder 200 , so that the liquid paraffin 100 is solidified to form solid paraffin 100 .

[0043] Step 3: Measure the flake silver powder 200 on the solid paraffin wax 100, such as image 3 As shown, use a scanning electron microscope to photograph the surface of the solid paraffin 100 to measure the particle size of the flake silver powder 200, cut the solid paraffin 100 along a d...

Embodiment 2

[0045] The embodiment of the present invention provides a method for measuring the diameter-thickness ratio of flake powder, such as Figure 4 shown, which includes the following steps:

[0046] Step 1: Prepare Rosin 300.

[0047] Step 2: Heat the rosin 300 to make it melt to form a liquid liquid rosin 300 with a thickness of 3 mm, sprinkle and disperse 0.05 g of flake silver powder 200 on the surface of the liquid rosin 300, and then place it for 10 minutes to make the flake silver powder 200 in the liquid state The surface of the rosin 300 is diffused and arranged horizontally and ordered to form a single layer of flaky silver powder 200 , so that the liquid rosin 300 solidifies to form a solid rosin 300 .

[0048] Step 3: Cover the surface of the flaky silver powder 200 on the solid rosin 300 with a layer of new liquid rosin 300, and disperse 0.05g of the flaky silver powder 200 on the surface of the new liquid rosin 300 to make the new liquid The liquid rosin 300 is soli...

Embodiment 3

[0051] The embodiment of the present invention provides a method for measuring the aspect ratio of flake powder, which includes the following steps:

[0052] Step 1: Prepare liquid polyethylene resin.

[0053] Step 2: Sprinkle and disperse 10g of flake tantalum powder on the surface of the liquid polyethylene resin, and place it for 6 minutes, so that the flake tantalum powder is spread and arranged on the surface of the liquid polyethylene resin to form a single-layer sheet that is horizontally and orderly tiled tantalum powder, and then solidify the liquid polyethylene resin.

[0054] Step 3: Measure the flake tantalum powder on the cured polyethylene resin, such as image 3 As shown, use a scanning electron microscope to photograph the surface of the solid polyethylene resin to measure the particle size of the flake tantalum powder, cut the solid polyethylene resin along the direction perpendicular to its surface, and use a scanning electron microscope to photograph the cu...

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Abstract

The invention discloses a measuring method of a plate-like powder radius-thickness ratio, and relates to the technical field of measurement. The measuring method of the plate-like powder radius-thickness ratio includes the steps: providing a supporting body which can be converted between a liquid state and a solid state; dispersing plate-like powder onto the surface of liquid state supporting body, and converting the liquid state supporting body into solid state supporting body; measuring and calculating the plate-like powder on the solid state supporting body. The measuring method of the plate-like powder radius-thickness ratio is simple and convenient to operate, and divided layers of the plate-like powder is sequentially arranged, so that accurate measuring data are rapidly and efficiently acquired.

Description

technical field [0001] The invention relates to the technical field of measurement, and in particular to a method for measuring the aspect ratio of flake powder. Background technique [0002] Flaky particle powder is a kind of powder with special shape in powder materials, which has the characteristics of thin thickness, large diameter-thickness ratio, and large coverage area per unit weight, which makes flake particle powder compared with ordinary powder materials. It has obvious advantages in powder adhesion, and flake powder has outstanding advantages in reflecting light, heat, electromagnetic waves and other characteristics. Silver powder used in conductive paint is a typical representative of flake powder materials. The diameter-thickness ratio of flaky powder is the ratio of the particle size of flaky particles to its thickness. It is an important physical characteristic parameter and one of the important indicators for evaluating the degree of flaky powder. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 潘金杰余争鸣甘丹毛晶晶万志红
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON