CN101398365A - Method for measuring moisten contact angle of powder material - Google Patents
Method for measuring moisten contact angle of powder material Download PDFInfo
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- CN101398365A CN101398365A CNA2007101236420A CN200710123642A CN101398365A CN 101398365 A CN101398365 A CN 101398365A CN A2007101236420 A CNA2007101236420 A CN A2007101236420A CN 200710123642 A CN200710123642 A CN 200710123642A CN 101398365 A CN101398365 A CN 101398365A
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- 239000000843 powder Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000009736 wetting Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 abstract 2
- 239000008151 electrolyte solution Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 150000001721 carbon Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention discloses a method used for measuring the wet contact angle of powder material, comprising the steps as follows: the powder material is put in a pipe-shaped container with the lower end sealed by a porous plate; furthermore, the power material is compressed; the pipe-shaped container is arranged vertically so as to lead the lower end of the pipe-shaped container to contact with the liquid and lead the liquid to soak part of the powder layer; the height and time that the liquid soaks the powder layer are determined; and according to a formula that h<2>/t is equal to cr Gama1cos Theta/2 Eta, the wet contact angle of the powder material in the liquid is calculated. The invention creatively adopts a capillary rise method to measure the contact angle and can be used for measuring the soaking degree of the liquid soaking the surface of the powder material.
Description
Technical field
The present invention relates to measure the method for the moisten contact angle of material, particularly relate to a kind of method of measuring moisten contact angle of powder material.
Background technology
Electrolytic solution is to the wetness degree of carbon material surface, can influence electrolytic solution fluid injection speed and reservoir quantity, influence the surface tension of cathode size, and then influence the foil-covering effect of cathode size on collector; Simultaneously, the surface wettability of carbon class material is determining carbon class material to adopt oiliness also or water prescription.So the surface wettability of evaluation material with carbon element provides good theoretical foundation practical advice to the making of lithium ion battery.
Contact angle is the main criterion of wetting state.Contact angle is defined as, when drop reaches balance on the surface of solid, at gas, liquid, solid three-phase intersection, angle between liquid-gas interface and the liquid-solid boundary is called contact angle and (appoints person of outstanding talent, Shen Jian, Lu Shouci, the particle dispersion Science and Technology, Chemical Industry Press, in June, 2005), as shown in Figure 1.Contact angle is more little, and liquid is good more in the degree of sprawling of solid surface, and promptly wetting state is good more, and when contact angle was zero, solid surface was by liquid complete wetting (DrewMyers, surface, interface and colloid, Chemical Industry Press, in January, 2005).Contact angle is big more, and wetting state is poor more.
The method of measuring contact angle at present is a lot, but the overwhelming majority is the assay method of liquid to the bulk solid moisten contact angle, for example can adopt angular measurement and linear measure longimetry method (Zheng Shuilin, powder surface modification, Chinese building material industry publishing house, in August, 2003).Measure at the moisten contact angle of powder granule in liquid, bibliographical information is not arranged at present as yet.
Summary of the invention
The present invention is exactly the problems referred to above at prior art, and a kind of method of measuring the moisten contact angle of powder body material in liquid is provided.
For achieving the above object, the present invention has adopted following technical scheme:
The invention discloses a kind of method of measuring moisten contact angle of powder material, described method comprises step:
A, powder body material is packed in the tubular container of lower end with microwell plate sealing, and powder body material is compressed;
B, the tubular container that step a is obtained are vertically placed, and its lower end is contacted with liquid, make liquid-soaked part powder layer, and measure the height and the time of liquid-soaked powder layer;
C, calculate the moisten contact angle of described powder body material in described liquid according to following formula (I)
H wherein: liquid moistening height, cm;
T: wetting time, second;
Cr: constant is definite value concerning the system of same powder body material;
γ
1: the surface tension of liquid, dyn/cm;
θ: the moisten contact angle of powder body material, (°);
η: the viscosity of liquid, Pas.
Cr measures by the following method in the described formula (I):
Order
Formula (I) is reduced to:
h
2＝kt (III)
According to the described method of described step a, b, employing water is wetting liquid, measure the moistening height under the different time, and calculate the k value,
Viscosity, surface tension and the moisten contact angle of described powder body material in water according to known water calculate the cr value.
Preferably, described powder body material is the toner body material.
Described tubular container is preferably transparent glass tube.
Owing to adopted above technical scheme, the beneficial effect that the present invention is possessed is:
The present invention is directed to the powder granule material, the initiative capillary rise method that adopts is measured contact angle, has solved present stage in the art, and the technical matters of good measuring method is not arranged as yet for powder granule material moisten contact angle in liquid; The exploitation of method of the present invention, especially the lithium ion battery field possessed significance, can be used for measuring the wetness degree of electrolytic solution, and the surface wettability by estimating material with carbon element provides good theoretical foundation and practical advice to the making of lithium ion battery to the toner body material surface.
Description of drawings
Fig. 1 is a gas-liquid-solid three-phase contact angle synoptic diagram;
Fig. 2 is a moisten contact angle of powder material measurement mechanism synoptic diagram of the present invention.
Embodiment
Take by weighing a certain amount of certain powder graphite material, in the glass tube after the lower end of packing into is sealed with microwell plate, and be compacted to fixedly scale, obtain measuring tube.Adopt the measuring tube of a plurality of same specifications of preparation that use the same method.
1) is wetting liquid with water, measuring tube is vertically placed, and its lower end is contacted with water, as shown in Figure 2.
Hole in the glass tube is considered as a branch of parallel capillary pipe that mean diameter is r, then can gets following formula (Zhang Futian, molecule surface chemistry basis, Shanghai scientific and technical literature publishing house, in June, 2006) by the Poiseulle formula:
H wherein: liquid moistening height, cm;
T: wetting time, second;
Cr: constant;
γ
1: the surface tension of liquid, dyn/cm;
θ: the moisten contact angle of powder body material, (°);
η: the viscosity of liquid, Pas.
Order
For certain powder layer and liquid at a certain temperature, (I) formula can be reduced to:
h
2＝kt (III)
With water is wetting liquid, measuring tube is vertically placed, and its lower end is contacted with water.Adopt a plurality of measuring tubes to measure, obtain the height of one group of water infiltration powder layer to the data of time, with h
2To the t mapping, promptly get a straight line, calculate this straight slope k value thus.
2) adopting same quadrat method, is wetting liquid with electrolytic solution to be measured, one of them measuring tube is vertically placed, and its lower end is contacted with electrolytic solution, measures electrolytic solution and soaks into the data of the height of powder layer to the time.
According to 1) in the cr value that calculates, calculating this electrolytic solution in conjunction with above data by formula (I) is 27 degree to the moisten contact angle of used powder graphite material, this electrolytic solution is good to the wetting state of this graphite powder body material.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention/utility model is done, can not assert that the concrete enforcement of the present invention/utility model is confined to these explanations.For the present invention/utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the present invention/utility model design, can also make some simple deduction or replace, all should be considered as belonging to the protection domain of the present invention/utility model.
Claims (4)
1, a kind of method of measuring moisten contact angle of powder material, described method comprises step:
A, powder body material is packed in the tubular container of lower end with microwell plate sealing, and powder body material is compressed;
B, the tubular container that step a is obtained are vertically placed, and its lower end is contacted with liquid, make liquid-soaked part powder layer, and measure the height and the time of liquid-soaked powder layer;
C, calculate the moisten contact angle of described powder body material in described liquid according to following formula (I)
H wherein: liquid moistening height, cm;
T: wetting time, second;
Cr: constant is definite value concerning the system of same powder body material;
γ
1: the surface tension of liquid, dyn/cm;
θ: the moisten contact angle of powder body material, (°);
η: the viscosity of liquid, Pas.
2, a kind of method of measuring moisten contact angle of powder material according to claim 1 is characterized in that: cr measures by the following method in the described formula (I):
Order
Formula (I) is reduced to:
h
2＝kt (III)
According to the described method of described step a, b, employing water is wetting liquid, measure the moistening height under the different time, and calculate the k value,
Viscosity, surface tension and the moisten contact angle of described powder body material in water according to known water calculate the cr value.
3, a kind of method of measuring moisten contact angle of powder material according to claim 1 and 2, it is characterized in that: described powder body material is the toner body material.
4, a kind of method of measuring moisten contact angle of powder material according to claim 1 and 2, it is characterized in that: described tubular container is a transparent glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236420A CN101398365A (en) | 2007-09-29 | 2007-09-29 | Method for measuring moisten contact angle of powder material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236420A CN101398365A (en) | 2007-09-29 | 2007-09-29 | Method for measuring moisten contact angle of powder material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101398365A true CN101398365A (en) | 2009-04-01 |
Family
ID=40517071
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101236420A Pending CN101398365A (en) | 2007-09-29 | 2007-09-29 | Method for measuring moisten contact angle of powder material |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494971A (en) * | 2011-11-29 | 2012-06-13 | 河北省电力建设调整试验所 | Method for detecting hydrophobic nature of composite insulator based on dynamic contact angles |
| RU2457464C1 (en) * | 2011-02-28 | 2012-07-27 | Государственное образовательное учреждение высшего профессионального образования "Томский государственный университет" (ГОУ ВПО ТГУ) | Method of defining powder materials wettability |
| CN103575621A (en) * | 2013-10-23 | 2014-02-12 | 山东建筑大学 | Method for measuring apparent contact angle of liquid on surfaces of particles |
| CN104359798A (en) * | 2014-10-10 | 2015-02-18 | 天津大学 | Multi-flux device capable of automatically measuring surface free energy parameters of powder/particles |
| CN104880387A (en) * | 2015-06-17 | 2015-09-02 | 成都理工大学 | Test device for measuring contact angle of water repellency soil |
| CN105466813A (en) * | 2015-12-30 | 2016-04-06 | 华南理工大学 | Determination method of contact angle of powder and liquid |
| CN109520891A (en) * | 2019-01-18 | 2019-03-26 | 南京工业大学 | Method for measuring contact angle of filter material |
| CN110243726A (en) * | 2019-05-31 | 2019-09-17 | 山东科技大学 | A kind of coal containing methane gas wetting of particulates characteristic test device and test method |
| CN110307792A (en) * | 2018-03-27 | 2019-10-08 | 本田技研工业株式会社 | Check device and method |
| CN111220507A (en) * | 2019-12-03 | 2020-06-02 | 中国农业大学 | Method for rapidly measuring wettability of protein powder |
| CN113063702A (en) * | 2021-03-29 | 2021-07-02 | 中国石油大学(华东) | Novel evaluation method suitable for formation silt solid particle surface wettability |
| CN113075094A (en) * | 2021-03-31 | 2021-07-06 | 宁德卓高新材料科技有限公司 | Diaphragm wettability testing device and testing method thereof |
-
2007
- 2007-09-29 CN CNA2007101236420A patent/CN101398365A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2457464C1 (en) * | 2011-02-28 | 2012-07-27 | Государственное образовательное учреждение высшего профессионального образования "Томский государственный университет" (ГОУ ВПО ТГУ) | Method of defining powder materials wettability |
| CN102494971A (en) * | 2011-11-29 | 2012-06-13 | 河北省电力建设调整试验所 | Method for detecting hydrophobic nature of composite insulator based on dynamic contact angles |
| CN103575621A (en) * | 2013-10-23 | 2014-02-12 | 山东建筑大学 | Method for measuring apparent contact angle of liquid on surfaces of particles |
| CN104359798A (en) * | 2014-10-10 | 2015-02-18 | 天津大学 | Multi-flux device capable of automatically measuring surface free energy parameters of powder/particles |
| CN104880387B (en) * | 2015-06-17 | 2018-02-27 | 成都理工大学 | One kind measures repellency soil contact angle experimental rig |
| CN104880387A (en) * | 2015-06-17 | 2015-09-02 | 成都理工大学 | Test device for measuring contact angle of water repellency soil |
| CN105466813A (en) * | 2015-12-30 | 2016-04-06 | 华南理工大学 | Determination method of contact angle of powder and liquid |
| CN110307792A (en) * | 2018-03-27 | 2019-10-08 | 本田技研工业株式会社 | Check device and method |
| CN110307792B (en) * | 2018-03-27 | 2021-07-09 | 本田技研工业株式会社 | Inspection apparatus and method |
| US11371872B2 (en) | 2018-03-27 | 2022-06-28 | Honda Motor Co., Ltd. | Inspection device and inspection method |
| CN109520891A (en) * | 2019-01-18 | 2019-03-26 | 南京工业大学 | Method for measuring contact angle of filter material |
| CN110243726A (en) * | 2019-05-31 | 2019-09-17 | 山东科技大学 | A kind of coal containing methane gas wetting of particulates characteristic test device and test method |
| CN111220507A (en) * | 2019-12-03 | 2020-06-02 | 中国农业大学 | Method for rapidly measuring wettability of protein powder |
| CN113063702A (en) * | 2021-03-29 | 2021-07-02 | 中国石油大学(华东) | Novel evaluation method suitable for formation silt solid particle surface wettability |
| CN113075094A (en) * | 2021-03-31 | 2021-07-06 | 宁德卓高新材料科技有限公司 | Diaphragm wettability testing device and testing method thereof |
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Open date: 20090401 |