CN203455411U - An apparatus for measuring the conductivity of powder material - Google Patents
An apparatus for measuring the conductivity of powder material Download PDFInfo
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- CN203455411U CN203455411U CN201320588384.4U CN201320588384U CN203455411U CN 203455411 U CN203455411 U CN 203455411U CN 201320588384 U CN201320588384 U CN 201320588384U CN 203455411 U CN203455411 U CN 203455411U
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Abstract
The utility model relates to an apparatus for measuring the conductivity of powder material. A four-probe method for measuring the conductivity of powder material demands a great number of samples such that the application of the method is limited. The purpose of the utility model is to provide an apparatus for measuring the conductivity of powder material, wherein the apparatus has characteristics of simple structure, easy manipulation, and little powder material. The apparatus for measuring the conductivity of powder material comprises a die body and two thread end plugs used as current electrode terminals. A die chamber is disposed in the die body. The die body comprises a top die sleeve, a middle die sleeve, and a bottom die sleeve. A sample used to be measured is disposed in the die chamber and is aligned to the top surface and the bottom surface of the middle die sleeve. The bottom surface of the top die sleeve and the top surface of the bottom die sleeve are both equipped with slits for accommodating voltage electrode wires. Stainless steel gaskets are arranged between the thread end plugs and the sample. Binding posts are disposed on the thread end plugs. The apparatus is easy to manipulate and can be used for measuring the conductivity of powder material with any agglomeration performance with a four-electrode method.
Description
Technical field
The utility model belongs to material properties test technical field, is specifically related to a kind of dusty material EC-device.
Background technology
In modern scientific research, the electric conductivity that all relates to pressed powder or fiber in the research category of Many researchers detects.In experiment, conventional method is that powder preparation is become to solution or suspension, utilizes existing conductivity meter to measure.Measure and have two problems like this, first be that degree of accuracy is not high, because whether the result of this method depends on solvent electric conductivity to a great extent good, the dissolubility of powder with and concentration in the solution electronic conduction network that whether can form self in solvent can affect the electric conductivity of solvent, thereby the result that impact detects; Next is not have universality, because this method will get into trouble while being used for measuring the completely soluble research object that cannot form again suspension such as fiber, if add surfactant to be prepared into suspension, need to get rid of the impact of surfactant on monolithic conductive, if do not added, there is layering in liquid and solid, the just electric conductivity of liquid that conductivity meter is measured; Be finally that sample reclaims difficulty, after even surfactant mixes with liquid, need to carry out a large amount of work residual to remove the liquid and the auxiliary agent that adhere on powder.
Except the way of utilizing solution to measure, also having a kind of is utilize sheeter or similarly install a large amount of powder are pressed into thin slice, utilize subsequently four probe method or directly by special device, measure, this measuring method is larger to the quantitative requirement of measurement sample, for the higher powder of some costs, the sample of a large amount of samples cannot be once provided, be unsuitable for adopting the method, and because the reunion performance of some powder to be measured is poor, the sample bad mechanical property of suppressing, be easy to fragmentation, be difficult to obtain shape regular, the disk with some strength, limited the widespread use of this method.Therefore,, for the conductivity of Accurate Measurement dusty material, to measuring, the device of dusty material conductivity carries out omnibearing design and improvement is necessary and urgent.
Summary of the invention
The purpose of this utility model overcomes the deficiency that prior art exists, a kind of dusty material EC-device is provided, simple in structure, easy operating, used dusty material few during mensuration, can apply the conductivity of interchange or any dusty material of direct current four electrode method Accurate Measurement.
For achieving the above object, the technical solution of the utility model is:
A kind of dusty material EC-device, its special character is: comprise die body and 2 screw plugs that serve as galvanic electrode terminal, die cavity is set in die body, described die body comprises mold cover from top to bottom successively, middle mould cover and bed die cover, mold cover and bed die cover arrange internal thread, are provided for the sample of detection in die cavity, and sample is concordant with middle mould cover upper and lower surface; The upper surface of the lower surface of mold cover and bed die cover all arranges one for holding the slit of voltage electrode wire; Between screw plug and sample, stainless steel gasket is set; On described screw plug, binding post is set.
Further, on the lower surface of the upper surface of described mold cover and bed die cover, all offer counterbore, mold cover is fixedly connected with middle mould cover by countersunk head screw with bed die cover.
Further, the xsect of described die body is for opening round-meshed square.
Further, the width of described slit and the degree of depth are 0.1-0.2mm.
Further, described voltage electrode wire is nickel wire, platinum filament, copper wire or aluminium wire, and the skin of voltage electrode wire is insulation course, and the exposed 0.1mm length in one end of voltage electrode wire is following as electrode tip, and the diameter of voltage electrode wire and the size of slit match.
The utility model is simple in structure, easy operating, and testing cost is low, and the kind that can detect sample is wide in range, and the conductivity result accuracy rate of measuring is high.This device is when measuring the conductivity of dusty material, dusty material to be measured is used few, only need to press a sample thin slice, the both sides of thin slice hold a little dusty material and are fixed, and need press three thin slices and occur the situation of sample deficiency in the time of can avoiding utilizing four determination of electrode conductivity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model mold cover;
Fig. 3 is the structural representation of the utility model bed die cover;
Fig. 4 is the structural representation of mould cover in the utility model;
Wherein, mould cover, 5-bed die cover, 6-countersunk head screw, 7-stainless steel gasket, 8-binding post, 9-voltage electrode wire in 1-screw plug, 2-sample, 3-mold cover, 4-.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Referring to Fig. 1 to Fig. 4, a kind of dusty material EC-device, comprise die body and 2 screw plugs 1 that serve as galvanic electrode terminal, the xsect of die body is for opening round-meshed square, and the square _type layout of die body is conducive to placement and electric current, the voltage terminal connection of proving installation and stablizes.Die cavity is set in die body, and die body comprises mold cover 3 from top to bottom successively, middle mould cover 4 and bed die cover 5, and mold cover 3 and bed die cover 5 arrange internal thread, are provided for the sample 2 that detects in die cavity, and it is concordant that sample 2 and middle mould overlap 4 upper and lower surfaces; The upper surface of the lower surface of mold cover 3 and bed die cover 5 all arranges one for holding the slit of voltage electrode wire 9, and the width of slit and the degree of depth are 0.1-0.2mm; Between screw plug 1 and sample 2, stainless steel gasket 7 is set; Binding post 8 is set on screw plug 1.On the lower surface of the upper surface of mold cover 3 and bed die cover 5, all offer 4 counterbores, 4 counterbores be wired to square, the counterbore of mold cover 3 is opened in the inward flange that mold overlaps 3 upper surfaces, the counterbore of bed die cover 5 is opened in the outward flange of lower surface, mold cover 3 is fixedly connected with middle mould cover 4 by countersunk head screw 6 with bed die cover 5, and the upper and lower surface of middle mould cover 6 is provided for the hole of the countersunk head screw matching connection that overlaps with upper and lower mould.
Voltage electrode wire 9 is nickel wire, platinum filament, copper wire or the aluminium wire of diameter 0.1-0.2mm, the skin of voltage electrode wire 9 is insulation course, the exposed 0.1mm length in one end of voltage electrode wire 9 is following as electrode tip, and the diameter of voltage electrode wire 9 and the size of slit match.
Determinator of the present utility model in use, first suppressing thickness highly equates with middle mould cover or slightly thick sample disk, disk through compacting is positioned in die cavity, with blade cuts or sand papering, make with middle mould and overlap the concordant sample face of 4 upper and lower surfaces, the voltage electrode wire 9 of 0.1-0.2mm is embedded in respectively in the mold cover 3 of EC-device and the slit of bed die cover 5, regulate the center of electrode tip in specimen 2, make mold cover 3, bed die cover 5 overlaps 4 surroundings with middle mould and aligns, fastening for fixing countersunk head screw 6, shown in Fig. 1, mold cover 3 is fixedly connected with middle mould cover 4 by countersunk head screw 6 with bed die cover 5.A little is evenly seated in the upper/lower die cover of middle mould cover 4 to get powder to be measured, to introduce input, output current, regulate loadings to guarantee that sample surfaces is higher than voltage electrode 0.1-0.2mm, load onto stainless steel gasket 7, fastening upper and lower two screw plugs 1, the revolving force that the stainless steel gasket 7 of setting applies sample while rotating in order to sluggish and buffering screw plug.
Voltage electrode material can be selected nickel wire, platinum filament, copper wire, the aluminium wire of diameter 0.1-0.2mm, with soft, rigidity is low, the tinsel that conductivity is high is good.Wire surface need be coated with the uniform insulation course of one deck, a scheme is enamel covered wire, the enamel insulated aluminium wire of selecting market to buy, another scheme is to adopt the naked metal wires of resin-coating such as polyester, polyurethane, polyester-imide, epoxy resin, polyvinyl alcohol (PVA), through volatile dry, after being heating and curing, uses.This scheme is suitable for platinum filament, spun gold, nickel wire of good corrosion resistance etc., can select according to the chemical stability of powder to be measured, probe temperature etc.
Voltage electrode follows these steps to preparation:
The insulated metal line of getting a diameter 0.1-0.2mm scrapes off the insulation course of surperficial surrounding with blade, make one end exposed length below 0.1mm, as electrode tip, uses.Because the requirement of voltage electrode end is as much as possible little with the contact area of sample disk, therefore scrape off after surrounding insulation course, can excise under the microscope unnecessary bare wire and partly make voltage electrode.As the other end of current potential output, bare wire part can suitably lengthen and be beneficial to and being connected of the collection of electrochemical workstation equipotential and impedance analysis instrument.
Die body in the utility model consists of insulating material.Probe temperature depending on sample conductivity can adopt different insulating material, when probe temperature is during lower than 100 ℃, can adopt the processing such as acrylic organic glass, heatproof Polyvinylchloride (PVC), polycarbonate (PC), polyester (PET) plastics; When probe temperature is during up to 260 ℃, can adopt teflon processing; When probe temperature is during up to 500 ℃, can adopt the processing of thermostable phenolic resin bakelite.
The metal material processing manufactures such as the available high strength of other parts in the utility model device, high-quality stainless steel or alloy.
The utility model is simple in structure, easy operating, and testing cost is low, and the kind that can detect sample is wide in range, and the conductivity result accuracy rate of measuring is high.This device is when measuring the conductivity of dusty material, dusty material to be measured is used few, only need to press a sample thin slice, the both sides of thin slice hold a little dusty material and are fixed, and need press three thin slices and occur the situation of sample deficiency in the time of can avoiding utilizing four determination of electrode conductivity.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art of the present technique in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. a dusty material EC-device, it is characterized in that: comprise die body and 2 screw plugs (1) that serve as galvanic electrode terminal, die cavity is set in die body, described die body comprises mold cover (3) from top to bottom successively, middle mould cover (4) and bed die cover (5), mold cover (3) and bed die cover (5) arrange internal thread, in die cavity, be provided for the sample (2) detecting, sample (2) is concordant with middle mould cover (4) upper and lower surface; The upper surface of the lower surface of mold cover (3) and bed die cover (5) all arranges one for holding the slit of voltage electrode wire (9); Between screw plug (1) and sample (2), stainless steel gasket (7) is set; Binding post (8) is set on described screw plug (1).
2. a kind of dusty material EC-device according to claim 1, it is characterized in that: on the lower surface of the upper surface of described mold cover (3) and bed die cover (5), all offer counterbore, mold cover (3) is fixedly connected with middle mould cover (4) by countersunk head screw (6) with bed die cover (5).
3. a kind of dusty material EC-device according to claim 2, is characterized in that: the xsect of described die body is for opening round-meshed square.
4. a kind of dusty material EC-device according to claim 2, is characterized in that: the width of described slit and the degree of depth are 0.1-0.2mm.
5. a kind of dusty material EC-device according to claim 2, it is characterized in that: described voltage electrode wire (9) is nickel wire, platinum filament, copper wire or aluminium wire, the skin of voltage electrode wire (9) is insulation course, the exposed 0.1mm length in one end of voltage electrode wire (9) is following as electrode tip, and the size of the diameter of voltage electrode wire (9) and slit (9) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588384.4U CN203455411U (en) | 2013-09-24 | 2013-09-24 | An apparatus for measuring the conductivity of powder material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320588384.4U CN203455411U (en) | 2013-09-24 | 2013-09-24 | An apparatus for measuring the conductivity of powder material |
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| Publication Number | Publication Date |
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| CN203455411U true CN203455411U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320588384.4U Expired - Fee Related CN203455411U (en) | 2013-09-24 | 2013-09-24 | An apparatus for measuring the conductivity of powder material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974199A (en) * | 2016-07-15 | 2016-09-28 | 中国科学院福建物质结构研究所 | Solid powder DC resistance and AC impedance test apparatus |
| CN107421993A (en) * | 2017-05-27 | 2017-12-01 | 双登集团股份有限公司 | Powdered electrode material electric conductivity simulating test device |
| CN108061822A (en) * | 2017-11-23 | 2018-05-22 | 浙江衡远新能源科技有限公司 | A kind of powder conductivity rate test equipment |
-
2013
- 2013-09-24 CN CN201320588384.4U patent/CN203455411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974199A (en) * | 2016-07-15 | 2016-09-28 | 中国科学院福建物质结构研究所 | Solid powder DC resistance and AC impedance test apparatus |
| CN107421993A (en) * | 2017-05-27 | 2017-12-01 | 双登集团股份有限公司 | Powdered electrode material electric conductivity simulating test device |
| CN108061822A (en) * | 2017-11-23 | 2018-05-22 | 浙江衡远新能源科技有限公司 | A kind of powder conductivity rate test equipment |
| CN108061822B (en) * | 2017-11-23 | 2020-06-02 | 浙江衡远新能源科技有限公司 | Powder conductivity test equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |