CN109490152A - The measurement method of flaky powder radius-thickness ratio - Google Patents

The measurement method of flaky powder radius-thickness ratio Download PDF

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Publication number
CN109490152A
CN109490152A CN201811394036.7A CN201811394036A CN109490152A CN 109490152 A CN109490152 A CN 109490152A CN 201811394036 A CN201811394036 A CN 201811394036A CN 109490152 A CN109490152 A CN 109490152A
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flaky powder
supporting body
solid
liquid
thickness ratio
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CN109490152B (en
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潘金杰
余争鸣
甘丹
毛晶晶
万志红
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AEROSPACE SCIENCE AND INDUSTRY WUHAN MAGNETISM-ELECTRON CO LTD
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AEROSPACE SCIENCE AND INDUSTRY WUHAN MAGNETISM-ELECTRON CO LTD
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials

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  • Dispersion Chemistry (AREA)
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  • Health & Medical Sciences (AREA)
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Abstract

A kind of measurement method of flaky powder radius-thickness ratio, is related to field of measuring technique.The measurement method of the flaky powder radius-thickness ratio is the following steps are included: provide the supporting body that can be converted between liquid and solid-state;It disperses flaky powder on the supporting body surface of liquid, converts the supporting body of liquid to solid-state;Measure the flaky powder on solid supporting body and calculating.The measurement method of flaky powder radius-thickness ratio provided by the invention is not only simple to operate, and flaky powder can be made to be layered ordered arrangement, thus the accurate measurement data of acquisition rapidly and efficiently.

Description

The measurement method of flaky powder radius-thickness ratio
Technical field
The present invention relates to a kind of field of measuring technique, and in particular to a kind of measurement method of flaky powder radius-thickness ratio.
Background technique
Sheet-like particle powder is a kind of special appearance powder in powder body material, and, radius-thickness ratio thin with thickness be big, unit The characteristics such as the area coverage of weight is big, this make sheet-like particle powder compare common powder body material powder cover in power have it is bright Aobvious advantage, while sheet-like particle powder has an outstanding advantages in the characteristics such as reflected light, heat, electromagnetic wave, used in conductive paint Silver powder is the Typical Representative of flaky powder material.The radius-thickness ratio of flaky powder is ratio of the partial size with its thickness of sheet-like particle, It is an important physical characteristic parameter, and one of the important indicator of evaluation powder flaking degree.
Currently, the method for domestic measurement sheet-like particle radius-thickness ratio mainly has crystal optics method, sedimentation and laser particle size Analytic approach.Wherein, crystal optics method is to measure radius-thickness ratio with spindle stage and petrographic microscope cooperation, is by rotating needle handle The granular powder on needle point will be covered to rise, and partial size and thickness are measured by petrographic microscope, and diameter is thus calculated Thickness rate;Sedimentation is that partial size and the distribution of sedimentation powder are measured using the Stokes rate of settling;Laser immunotherapy is Grain diameter and distribution are measured to scattering (diffraction) phenomenon of laser using particle.The method of state's external pelivimetry radius-thickness ratio is general Have: electron scanning electron microscopy, X-ray projection image method, X-ray diffractometric structural analysis method etc., these types of measurement method is to pass through respectively By sheet-like particle ordered arrangement, then epoxy resin method, pressed disc method boil glue method, dispersing agent seasoning, laminated layer method or half laminated layer method Further measure the partial size and thickness of powder.
But since the laminated structure of flaky powder is not standard circular, and the thickness of flaky powder different parts has Institute's difference, it is high to the measurement skill requirement of operator that this also results in crystal optics method, measurement result by man's activity very Greatly.And sedimentation and Laser immunotherapy measure micro-nano flaky powder partial size can not its piece diameter of actual response with point Cloth, can only react roughly the fineness of silver powder and substantially be distributed.In addition, epoxy resin method, pressed disc method, boiling glue method, dispersing agent Seasoning, laminated layer method or half laminated layer method are more demanding to sample preparation operation, and having for horizontality cannot be presented in flaky powder completely Sequence arranges or has certain destruction to powder shape, to influence the accuracy of testing result.Especially disperse powder in When in liquid, the ratio of powder and liquid is excessively high, will lead to powder aggregation, as shown in Figure 1, causing to be difficult to measure single particle Partial size, the ratio of powder and liquid is too low, and it is very few without having representativeness to will lead to particle.
Therefore, it is necessary to it is a kind of simple to operate and can acquisition flaky powder radius-thickness ratio rapidly and efficiently accurately measure number According to method.
Summary of the invention
It is not only simple to operate the purpose of the present invention is to provide a kind of measurement method of flaky powder radius-thickness ratio, And it being capable of the accurate measurement data of acquisition rapidly and efficiently.
The present invention solves its technical problem and adopts the following technical solutions to realize.
A kind of measurement method of flaky powder radius-thickness ratio comprising following steps:
Step 1: offer can be converted into the supporting body converted between solid-state from liquid;
Step 2: it disperses flaky powder on the supporting body surface of liquid, converts the supporting body of liquid to solid-state;
Step 3: the flaky powder on solid supporting body and calculating are measured.
Further, in a preferred embodiment of the present invention, above-mentioned supporting body includes paraffin, rosin or resin.
Further, in a preferred embodiment of the present invention, above-mentioned to further include the steps that between step 2 and step 3: Flaky powder surface on solid supporting body covers the supporting body of one layer of new liquid, disperses flaky powder in new liquid The supporting body surface of state, converts the supporting body of new liquid to solid-state.
Further, in a preferred embodiment of the present invention, above-mentioned the step of repeating between step 2 and step 3 is extremely It is few primary.
Further, in a preferred embodiment of the present invention, it when flaky powder on the solid supporting body of above-mentioned measurement, will hold Carrier edge is parallel to its surface direction and is cut, and the section obtained using scanning electron microscope shooting cutting is to measure flaky powder Partial size.
Further, in a preferred embodiment of the present invention, above-mentioned to be clapped using Image J software statistics and calculating scanning electron microscope The section that cutting obtains is taken the photograph to measure partial size and the distribution of flaky powder.
Further, in a preferred embodiment of the present invention, it when flaky powder on the solid supporting body of above-mentioned measurement, will hold Carrier perpendicular to its surface direction along being cut, and the section obtained using scanning electron microscope shooting cutting is to measure flaky powder Thickness.
Further, in a preferred embodiment of the present invention, above-mentioned to be clapped using Image J software statistics and calculating scanning electron microscope The section that cutting obtains is taken the photograph to measure the thickness of flaky powder.
Further, in a preferred embodiment of the present invention, above-mentioned solid supporting body with a thickness of 1-5mm.
Further, in a preferred embodiment of the present invention, in above-mentioned steps two, flaky powder is dispersed in the carrying of liquid Body surface face and after spreading 5-10min or more, converts the supporting body of liquid to solid-state.
The beneficial effect of the measurement method of the flaky powder radius-thickness ratio of the embodiment of the present invention is: provided in an embodiment of the present invention The measurement method of flaky powder radius-thickness ratio is the following steps are included: provide the supporting body that can be converted between liquid and solid-state;It will Flaky powder is scattered in the supporting body surface of liquid, converts the supporting body of liquid to solid-state;Measure solid supporting body On flaky powder.The measurement method of flaky powder radius-thickness ratio provided by the invention is not only simple to operate, and can make piece Shape powder is layered ordered arrangement, thus the accurate measurement data of acquisition rapidly and efficiently.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the electromicroscopic photograph in the prior art dispersed flaky powder in when flocking together in liquid;
Fig. 2 is the step flow chart of the measurement method for the flaky powder radius-thickness ratio that the embodiment of the present invention 2 provides;
Fig. 3 is the electromicroscopic photograph of the fixed flake silver powder in the surface of solid paraffin in the embodiment of the present invention 2;
Fig. 4 is the step flow chart of the measurement method for the flaky powder radius-thickness ratio that the embodiment of the present invention 3 provides;
Fig. 5 is the section electromicroscopic photograph that the rosin of single layer flake silver powder is enclosed in the embodiment of the present invention 2.
In figure: 100- paraffin;200- flaky powder;300- rosin.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase Product.
The measurement method of the flaky powder radius-thickness ratio of the embodiment of the present invention is specifically described below.
Liquid described in the embodiment of the present invention refers to the flow regime of supporting body.
The embodiment of the invention provides a kind of measurement methods of flaky powder radius-thickness ratio comprising following steps:
Step 1: offer can be converted into the supporting body converted between solid-state from liquid;Preferably, supporting body is selected from energy Enough substances converted between liquid and solid-state;It is furthermore preferred that supporting body includes paraffin, rosin or resin.It is further preferred that Resin includes polyvinyl resin, acrylic resin or polyvinyl chloride.
Step 2: it disperses flaky powder on the supporting body surface of liquid, converts the supporting body of liquid to solid-state; Preferably, after dispersing flaky powder in the supporting body surface of liquid and spread 5-10min or more, convert the supporting body of liquid To solid-state;It is furthermore preferred that solid supporting body with a thickness of 1-5mm.
Step 3: the flaky powder on solid supporting body and calculating are measured.Preferably, it measures on solid supporting body When flaky powder, supporting body edge is parallel to its surface direction and is cut, the section obtained using scanning electron microscope shooting cutting To measure the partial size of flaky powder;It is furthermore preferred that using Image J software statistics and calculating what scanning electron microscope shooting cutting obtained Section is to measure partial size and the distribution of flaky powder;It is further preferred that when measuring the flaky powder on solid supporting body, it will Supporting body perpendicular to its surface direction along being cut, and the section obtained using scanning electron microscope shooting cutting is to measure flaky powder Thickness;Still more preferably, the section obtained using Image J software statistics and calculating scanning electron microscope shooting cutting is to survey Measure the thickness of flaky powder.
The measurement method of flaky powder radius-thickness ratio provided in an embodiment of the present invention is not only simple to operate, and can make piece Shape powder is layered ordered arrangement, thus the accurate measurement data of acquisition rapidly and efficiently.The measurement side of the flaky powder radius-thickness ratio Method is the supporting body for first preparing liquid, then trickles down flaky powder in the surface of the supporting body of liquid, by Brownian movement and Gravity sprawls flaky powder naturally horizontally on the surface of the supporting body of liquid, and forms monolithic powder layer, and by certainly So cooling, artificial cooling or other means make the supporting body of liquid be converted into solid supporting body, fix solid supporting body Disperse and sprawl the monolithic powder layer to be formed, in order to staff measure the flaky powder on solid supporting body partial size and Thickness flaky powder radius-thickness ratio is calculated, by select paraffin, rosin etc. can Flashmelt and cured supporting body or Using the resin material of curable liquid as supporting body, it can significantly shorten the sample preparation period and reduce sample preparation operation hardly possible Degree, to effectively improve measurement efficiency.In addition, when measuring the flaky powder on solid supporting body, by supporting body along flat Row is cut in its surface direction or perpendicular to its surface direction, and the section obtained using scanning electron microscope shooting cutting is to measure The partial size and thickness of flaky powder can be improved the clarity of scanning electron microscope shooting photo, improve the accuracy rate of measurement, lead to simultaneously It crosses and uses Image J software statistics and calculate the section that scanning electron microscope shooting cutting obtains to measure the partial size and thickness of flaky powder Degree, can further improve measurement efficiency and accuracy of measurement.
In a preferred embodiment of the invention, the measurement method of above-mentioned flaky powder radius-thickness ratio further includes being located at step The step of between two and step 3: the flaky powder surface on solid supporting body covers the supporting body of one layer of new liquid, It disperses flaky powder on the supporting body surface of new liquid, converts the supporting body of new liquid to solid-state;Preferably, it repeats The step of between step 2 and step 3, is at least once.On the surface for the supporting body for dispersing flaky powder in liquid, and After so that the supporting body of liquid is converted to solid supporting body, it can also repeat in the sheet for being fixed on solid supporting body surface The supporting body of one layer of new liquid is covered on powder, and disperses new flaky powder on the supporting body surface of new liquid, is made The supporting body of new liquid is converted to solid-state, repeatedly repeatedly, can solid supporting body surface in formation and internal shape The flaky powder layer naturally horizontally sprawled at multilayer, consequently facilitating supporting body edge is parallel to its surface direction or hung down by staff It is directly cut in its surface direction, and using the partial size and thickness of scanning electron microscope shooting multilayer and measurement flaky powder, thus Multiple groups measurement can be carried out in a short time, the time needed for effectively shortening sample preparation repeatedly, greatly improve measurement Efficiency.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The embodiment of the invention provides a kind of measurement methods of flaky powder radius-thickness ratio, as shown in Figure 2 comprising following step It is rapid:
Step 1: prepare paraffin 100.
Step 2: heating paraffin wax 100 makes it melt the paraffin 100 for forming the liquid of liquid of 2mm thickness, by 0.05g piece Shape silver powder is trickled down in the surface for the paraffin 100 for being scattered in liquid, and 10min is subsequently placed with, and makes flake silver powder 200 in the paraffin of liquid 100 diffusion into the surface arranges the horizontal single layer flake silver powder 200 orderly to tile, solidifies the paraffin 100 of the liquid of liquid Form solid paraffin 100.
Step 3: measuring the flake silver powder 200 on solid paraffin 100, as shown in figure 3, being shot using scanning electron microscope solid The surface of the paraffin 100 of state to measure the partial size of flake silver powder 200, by solid paraffin 100 along perpendicular to its surface direction into Row cutting is measured the thickness of flake silver powder 200 using the section that scanning electron microscope shooting cutting obtains, further calculates to obtain piece The radius-thickness ratio of shape silver powder 200.
Embodiment 2
The embodiment of the invention provides a kind of measurement methods of flaky powder radius-thickness ratio, as shown in Figure 4 comprising following step It is rapid:
Step 1: prepare rosin 300.
Step 2: heating rosin 300 makes it melt the rosin 300 for forming the liquid of liquid of 3mm thickness, by 0.05g piece Shape silver powder 200 is unrestrained and is scattered in the surface of the rosin 300 of liquid, is subsequently placed with 10min, makes flake silver powder 200 in liquid The diffusion into the surface of rosin 300 arranges the horizontal single layer flake silver powder 200 orderly to tile, makes the rosin 300 of the liquid of liquid Solidification forms solid rosin 300.
Step 3: 200 surface of flake silver powder on solid rosin 300 covers the rosin of the liquid of one layer of new liquid 300, it disperses 0.05g flake silver powder 200 on 300 surface of rosin of the liquid of new liquid, makes the pine of the liquid of new liquid Perfume 300 is frozen into solid rosin 300, is repeated once the operation of above-mentioned steps three, then to obtain in solid rosin 300 Three layers of single layer flake silver powder 200;
Step 4: measuring the flake silver powder 200 on solid rosin 300, as shown in figure 3, by solid rosin 300 along flat Row carries out cutting three layers of solid rosin 300 for obtaining being enclosed with single layer flake silver powder 200 of separation in its surface direction, using sweeping It retouches Electronic Speculum and shoots the surface for being enclosed with three layers of solid rosin 300 of single layer flake silver powder 200 respectively to measure flake silver powder 200 Partial size, three layers of solid rosin 300 are cut along perpendicular to its surface direction, using scanning electron microscope shooting cutting obtain Section to measure the thickness of flake silver powder 200, as shown in Figure 5;By Image J software statistics and calculate scanning electron microscope shooting Obtained photo further calculates to obtain the radius-thickness ratio of flake silver powder 200 to calculate the partial size and thickness of flake silver powder 200.
Embodiment 3
The embodiment of the invention provides a kind of measurement methods of flaky powder radius-thickness ratio comprising following steps:
Step 1: prepare the polyvinyl resin of liquid.
Step 2: trickling down and be scattered in the surface of the polyvinyl resin of liquid by 10g flaked tantalum powder, places 6min, makes piece Shape tantalum powder arranges the horizontal single layer flaked tantalum powder orderly to tile in the diffusion into the surface of the polyvinyl resin of liquid, then makes liquid The polyvinyl resin of state solidifies.
Step 3: the flaked tantalum powder on the polyvinyl resin after solidifying is measured, as shown in figure 3, shooting using scanning electron microscope The surface of solid polyvinyl resin is to measure the partial size of flaked tantalum powder, by solid polyvinyl resin along perpendicular to its surface side To being cut, the thickness of flaked tantalum powder is measured using the section that scanning electron microscope shooting cutting obtains, passes through Image J software The photo that scanning electron microscope is shot is counted and calculated to calculate the partial size and thickness of flaked tantalum powder, further calculates to obtain sheet The radius-thickness ratio of tantalum powder.
In conclusion the measurement method of flaky powder radius-thickness ratio provided in an embodiment of the present invention is not only simple to operate, And flaky powder can be made to be layered ordered arrangement, thus the accurate measurement data of acquisition rapidly and efficiently.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts Every other embodiment, shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of measurement method of flaky powder radius-thickness ratio, which is characterized in that itself the following steps are included:
Step 1: offer can be converted into solid supporting body from liquid;
Step 2: dispersing flaky powder on the supporting body surface of liquid, then make the supporting body of liquid convert to Solid-state;
Step 3: flaky powder and calculating on the solid supporting body of measurement.
2. the measurement method of flaky powder radius-thickness ratio according to claim 1, which is characterized in that the supporting body includes stone Wax, rosin or resin.
3. the measurement method of flaky powder radius-thickness ratio according to claim 1, which is characterized in that further include being located at step 2 The step of between step 3: the flaky powder surface on the solid supporting body covers the carrying of one layer of new liquid Body disperses flaky powder on the supporting body surface of new liquid, converts the supporting body of new liquid to solid-state.
4. the measurement method of flaky powder radius-thickness ratio according to claim 3, which is characterized in that repeat be located at step 2 and The step of between step 3, is at least once.
5. the measurement method of flaky powder radius-thickness ratio according to claim 4, which is characterized in that held described in measurement is solid When the flaky powder on carrier, the supporting body is cut along being parallel to its surface direction, is clapped using scanning electron microscope The section that cutting obtains is taken the photograph to measure the partial size of flaky powder.
6. the measurement method of flaky powder radius-thickness ratio according to claim 5, which is characterized in that use Image J software Statistics and calculating scanning electron microscope shoot the section that cutting obtains to measure partial size and the distribution of flaky powder.
7. the measurement method of flaky powder radius-thickness ratio according to claim 1, which is characterized in that held described in measurement is solid When the flaky powder on carrier, by the supporting body along being cut perpendicular to its surface direction, clapped using scanning electron microscope The section that cutting obtains is taken the photograph to measure the thickness of flaky powder.
8. the measurement method of flaky powder radius-thickness ratio according to claim 7, which is characterized in that use Image J software Statistics and calculating scanning electron microscope shoot the section that cutting obtains to measure the thickness of flaky powder.
9. the measurement method of flaky powder radius-thickness ratio according to claim 1, which is characterized in that the solid supporting body With a thickness of 1-5mm.
10. the measurement method of flaky powder radius-thickness ratio according to claim 1, which is characterized in that, will in the step 2 After flaky powder is scattered in the supporting body surface of liquid and spreads 5-10min or more, convert the supporting body of liquid To solid-state.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114985758A (en) * 2022-07-29 2022-09-02 长春黄金研究院有限公司 Preparation method of flake silver powder

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CN103926119A (en) * 2014-02-19 2014-07-16 中国矿业大学(北京) Method for preparing kaolinite with high radius-thickness ratio, and measuring and calculating radius-thickness ratio of kaolinite
CN104359803A (en) * 2014-11-14 2015-02-18 河南理工大学 Sheet-shaped powder radius-thickness ratio testing method based on scanning electron microscope
CN104458517A (en) * 2014-12-12 2015-03-25 株洲硬质合金集团有限公司 Method for measuring radius-thickness ratio of flaky metal powder
CN105066934A (en) * 2015-09-15 2015-11-18 武汉理工大学 Flaky mineral hydration film thickness measurement method
CN105403488A (en) * 2015-12-01 2016-03-16 中国铝业股份有限公司 Method for detecting diameter-to-thickness ratio of flake alumina particles

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Publication number Priority date Publication date Assignee Title
CN103926119A (en) * 2014-02-19 2014-07-16 中国矿业大学(北京) Method for preparing kaolinite with high radius-thickness ratio, and measuring and calculating radius-thickness ratio of kaolinite
CN104359803A (en) * 2014-11-14 2015-02-18 河南理工大学 Sheet-shaped powder radius-thickness ratio testing method based on scanning electron microscope
CN104458517A (en) * 2014-12-12 2015-03-25 株洲硬质合金集团有限公司 Method for measuring radius-thickness ratio of flaky metal powder
CN104458517B (en) * 2014-12-12 2017-06-20 株洲硬质合金集团有限公司 The method for measuring flake metal powder radius-thickness ratio
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