CN113607624A - Porosity measurement method, device, equipment and system - Google Patents
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- CN113607624A CN113607624A CN202111025638.7A CN202111025638A CN113607624A CN 113607624 A CN113607624 A CN 113607624A CN 202111025638 A CN202111025638 A CN 202111025638A CN 113607624 A CN113607624 A CN 113607624A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 238000001764 infiltration Methods 0.000 claims abstract description 37
- 230000008595 infiltration Effects 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000007654 immersion Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 239000010439 graphite Substances 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 11
- 238000002791 soaking Methods 0.000 description 11
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000005303 weighing Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- ZYXUQEDFWHDILZ-UHFFFAOYSA-N [Ni].[Mn].[Li] Chemical compound [Ni].[Mn].[Li] ZYXUQEDFWHDILZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
Abstract
The application discloses a porosity measurement method, a porosity measurement device, porosity measurement equipment and a porosity measurement system, wherein the porosity measurement method comprises the steps of obtaining the dry weight and the volume of an object to be measured; acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; after the full infiltration, the object to be measured is completely immersed in the infiltration type solution and obtained under the condition of vacuumizing, the liquid in the solid densimeter is the infiltration type solution, and the volume of the object to be measured is the same as that of the object to be measured after the full infiltration; and determining the porosity of the object to be measured according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature. The object to be measured is immersed in the infiltration type solution completely and is vacuumized in the application, the object to be measured can be guaranteed to be infiltrated fully, the speed of infiltrating the object to be measured can be accelerated, the object to be measured is placed in the solid densimeter after being infiltrated fully to obtain the floating weight, the object to be measured is the same as the object to be measured in volume after being infiltrated fully, namely, the infiltration type solution can not influence the volume of the object to be measured, and the measurement precision of the porosity is guaranteed.
Description
Technical Field
The present disclosure relates to the field of lithium ion battery technologies, and in particular, to a porosity measurement method, apparatus, device, and system.
Background
The porosity is the percentage of the volume of pores in the block material to the total volume of the material in a natural state, and reflects the degree of compaction of the block material. The porosity of the battery pole piece is one of very important parameters in the battery design process, and has important influence on the transmission performance of the electrolyte.
At present, the porosity of the battery pole piece is measured in the following ways: firstly, the mercury intrusion instrument is used for measurement, and the test method has high cost, difficult operation and serious pollution; secondly, the pole piece is immersed in the solution and then taken out for weighing, the porosity of the pole piece is calculated according to the change of the mass, but the solution in the pole piece is adsorbed due to the fact that the pole piece needs to be wiped with the immersion solution after being taken out of the solution, so that the change of the mass is inaccurate, and the measurement result of the porosity is inaccurate; and thirdly, the dry weight of the pole piece and the weight of the pole piece after the pole piece is immersed in the solution are weighed by a spring scale, wherein the immersion of the pole piece in the solution means that the pole piece is immersed in the solution for a period of time, the pole piece cannot be completely immersed, and the immersion of the spring scale in the solution can influence the weighing result of the weight, so that the measurement result of the porosity has errors.
Therefore, how to solve the above technical problems should be a great concern to those skilled in the art.
Disclosure of Invention
The application aims to provide a porosity measurement method, a porosity measurement device, porosity measurement equipment and a porosity measurement system so as to improve the accuracy of porosity measurement and reduce the test cost.
In order to solve the above technical problem, the present application provides a porosity measurement method, including:
acquiring the dry weight and the volume of an object to be detected;
acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed;
and determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
Optionally, determining the porosity of the object to be measured according to the dry weight, the floating weight, the volume and the density of the immersion type solution at normal temperature includes:
according to
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
Optionally, when the object to be measured is a regular-shaped object, the process of determining the volume of the object to be measured includes:
acquiring the thickness and the area of the object to be detected;
determining the volume from the thickness and the area.
Optionally, after determining the porosity of the object to be measured, the method further includes:
and sending the porosity to a display terminal.
The present application also provides a porosity measurement device, comprising:
the first acquisition module is used for acquiring the dry weight and the volume of the object to be detected;
the second acquisition module is used for acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed;
and the determining module is used for determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
Optionally, the determining module is configured to determine according to
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
Optionally, the first obtaining module includes:
the acquisition unit is used for acquiring the thickness and the area of the object to be detected;
a determination unit that determines the volume based on the thickness and the area.
Optionally, the method further includes:
and the sending module is used for sending the porosity to a display terminal.
The present application also provides a porosity measurement device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of any of the porosity measurement methods described above when the computer program is executed.
The present application further provides a porosity measurement system comprising:
the porosity measuring apparatus described above, wherein the porosity measuring apparatus,
a solid-state density meter is arranged on the device,
and (4) vacuumizing equipment.
The application provides a porosity measurement method, which comprises the following steps: acquiring the dry weight and the volume of an object to be detected; acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed; and determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
It can be seen that, when the measuring method in the application soaks the object to be measured, the object to be measured is completely immersed in the soaking type solution and vacuumized, which not only can ensure the object to be measured to be sufficiently soaked, but also can accelerate the speed of soaking the object to be measured, thereby improving the measuring efficiency, the object to be measured after being sufficiently soaked can be directly placed in a solid densimeter to obtain the floating weight without wiping, thereby avoiding the influence of the weight error between the dry weight and the wet weight, improving the accuracy of the porosity measurement, and the object to be measured after being sufficiently soaked has the same volume as the object to be measured, namely the soaking type solution can not generate any influence on the volume of the object to be measured, namely the pore volume in the object to be measured can not be influenced, ensuring the accuracy of the porosity measurement, and further improving the accuracy of the porosity determined by the dry weight, the floating weight, the volume and the density of the soaking type solution at normal temperature, in addition, the mercury intrusion gauge is avoided, and the test cost is reduced.
In addition, the application also provides a measuring device, equipment and system with the advantages.
Drawings
For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a porosity measurement method provided in an embodiment of the present application;
FIG. 2 is a schematic view of a battery pole piece placed in a container for evacuation;
FIG. 3 is a schematic diagram of a solid densitometer weighing the float weight of a battery pole piece;
FIG. 4 is a block diagram of a porosity measurement device provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a porosity measurement apparatus according to an embodiment of the present disclosure.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As described in the background section, the current methods for measuring the porosity mainly include three methods, and the method for measuring the porosity by the mercury porosimeter has high cost, difficult operation and serious pollution; when the mass difference before and after soaking the solution is calculated, the accuracy of the mass difference can be influenced by the wiping process after soaking, and the accuracy of the porosity measurement result can be further influenced; when the dry weight of the pole piece and the weight of the pole piece after being immersed in the solution are weighed by the spring scale, the weight weighing result can be influenced by the immersion of the spring scale in the solution, so that an error exists in the porosity measuring result.
In view of the above, the present application provides a porosity measurement method, please refer to fig. 1, where fig. 1 is a flowchart of a porosity measurement method provided in an embodiment of the present application, the method includes:
step S101: and acquiring the dry weight and the volume of the object to be measured.
It should be noted that, in the present application, the object to be measured is not limited, as the case may be. For example, the object to be measured can be a positive plate of a lithium battery, a negative plate of the lithium battery, or any other object requiring porosity measurement. The positive plate of the lithium battery comprises but is not limited to a lithium iron phosphate pole piece, a lithium cobaltate pole piece, a lithium nickelate pole piece, a lithium nickel manganese pole piece and a ferric manganese phosphate pole piece, and the negative plate of the lithium battery comprises but is not limited to a lithium titanate pole piece, a silicon carbon pole piece and a graphite pole piece.
It should be noted that, the acquisition process of the object to be measured is not limited in the present application, and can be set by itself. For example, a volume value of the object to be measured may be directly obtained, or related data may be obtained, and the volume may be determined by the related data. For example, when the object to be measured is a regular-shaped object, the process of determining the volume of the object to be measured includes:
acquiring the thickness and the area of the object to be detected;
determining the volume from the thickness and the area.
Regular shapes include, but are not limited to, cuboids, cylinders, among others.
Step S102: acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; and after the full infiltration, the object to be measured is obtained by completely immersing the object to be measured in the infiltration type solution under the condition of vacuumizing, the liquid in the solid densimeter is the infiltration type solution, and the volume of the object to be measured after the full infiltration is the same as that of the object to be measured.
And after the full infiltration, the object to be detected is that the pores in the object to be detected are completely filled with the infiltration type solution. The immersion type solution is contained in a container, the object to be detected is placed in the immersion type solution, and the container is vacuumized, so that the immersion speed of the immersion type solution on the object to be detected can be increased, and the object to be detected can be completely immersed.
The specific type of the infiltration type solution is determined according to an object to be detected, so that the infiltration type solution can not react with the object to be detected, is low-toxic or nontoxic, and can ensure sufficient infiltration and the health and safety of experimenters.
After the full infiltration, the volume of the object to be measured is the same as that of the object to be measured, namely, the volume of the object to be measured cannot be influenced by the infiltration type solution, the volume of the object to be measured is prevented from being changed in the infiltration process, namely, the volume of the pores is prevented from being changed, and therefore errors brought to the porosity measurement result are avoided.
The liquid in the solid densimeter is also an infiltration type solution, so that the adverse effect on the object to be measured after full infiltration is avoided, the object to be measured after full infiltration is kept in a full infiltration state, and the accuracy of porosity measurement is ensured.
Step S103: and determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
Optionally, determining the porosity of the object to be measured according to the dry weight, the floating weight, the volume and the density of the immersion type solution at normal temperature includes:
according to
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
When the measuring method soaks the object to be measured, the object to be measured is completely immersed in the soaking type solution and vacuumized, so that the object to be measured can be ensured to be fully soaked, the speed of soaking the object to be measured can be increased, the measuring efficiency is improved, the object to be measured after being fully soaked is obtained, wiping is not needed, the fully soaked object to be measured is directly placed in a solid densimeter to obtain the floating weight, the influence of the weight error of the dry weight and the wet weight is avoided, the accuracy of porosity measurement is improved, in addition, the volume of the object to be measured is the same as that of the object to be measured after being fully soaked, namely, the soaking type solution can not generate any influence on the volume of the object to be measured, namely, the pore volume in the object to be measured can not be influenced, the accuracy of the porosity measurement is ensured, and further, the accuracy of the porosity determined by the dry weight, the floating weight, the volume and the density of the soaking type solution at normal temperature is improved, in addition, the mercury intrusion gauge is avoided, and the test cost is reduced.
On the basis of any of the foregoing embodiments, in an embodiment of the present application, after the determining the porosity of the object to be tested, the method further includes:
and sending the porosity to a display terminal so that a tester can observe and record the measurement result of the porosity.
The display terminal includes but is not limited to a display, a notebook computer, a smart phone and an iPad.
The measurement method of the present application is described below by taking a positive plate and a negative plate of a lithium battery as examples.
Step 13, as shown in fig. 2, placing the lithium iron phosphate positive plate 2 in a closed container 3 containing an ethylene glycol solution, so that the ethylene glycol 1 completely immerses the lithium iron phosphate positive plate 2, infiltrating, and vacuumizing by using a vacuumizing device 4 at 0.08MPa for 30 min;
step 14, taking out the lithium iron phosphate positive plate and measuring the thickness D of the plate again1And initial thickness D0The consistency is achieved;
step 15, as shown in fig. 3, taking out the lithium iron phosphate positive plate 2 from the closed container, quickly placing the lithium iron phosphate positive plate into a storage basket 5 of a solid densimeter which is replaced by infiltration type liquid, weighing the mass M of the solution in a solution pool 6 of the solid densimeter, wherein the solution is glycol solution1＝1.27g；
Step 16, according to the formula
The porosity epsilon of the lithium iron phosphate positive plate is 37.14 percent.
Step 21, taking a circular graphite negative plate, and measuring the diameter and the thickness D of the graphite negative plate0According to V0Pi x radius2X thickness (D)0) To obtain its volume V0＝0.5381cm3；
Step 22, drying the graphite cathode plate, and then weighing the mass M by using an electronic balance0＝1.406g；
Step 23, placing the graphite negative electrode sheet in a closed container filled with ethanol solution to enable the ethanol to completely immerse the graphite negative electrode sheet, soaking and vacuumizing to 0.06MPa for 20 min;
step 24, taking out the graphite negative plate and measuring the thickness D of the negative plate again1And initial thickness D0The consistency is achieved;
step 25, taking out the graphite negative plate, quickly putting the graphite negative plate into a storage basket of the solid densimeter which is replaced with the immersion liquid (ethanol), and weighing the mass M of the graphite negative plate1＝1.13g；
Step 26, according to the formula
The porosity epsilon of the graphite negative plate is 35.07%.
The porosity measuring device provided in the embodiments of the present application is described below, and the porosity measuring device described below and the porosity measuring method described above may be referred to correspondingly.
Fig. 4 is a block diagram of a porosity measurement device provided in an embodiment of the present application, and referring to fig. 4, the porosity measurement device may include:
a first obtaining module 100, configured to obtain a dry weight and a volume of an object to be measured;
the second obtaining module 200 is configured to obtain the floating weight of the fully-infiltrated object to be measured in the solid densimeter; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed;
the determining module 300 is configured to determine the porosity of the object to be measured according to the dry weight, the floating weight, the volume, and the density of the infiltration type solution at normal temperature.
The porosity measurement device of this embodiment is used to implement the porosity measurement method, and therefore, specific implementations of the porosity measurement device may be found in the foregoing embodiments of the porosity measurement method, for example, the first obtaining module 100, the second obtaining module 200, and the determining module 300 are respectively used to implement steps S101, S102, and S103 in the porosity measurement method, so that the specific implementations may refer to descriptions of corresponding embodiments of each part, and are not described herein again.
Optionally, the determining module 300 is specifically configured to determine the position of the target
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
Optionally, the first obtaining module 100 includes:
the acquisition unit is used for acquiring the thickness and the area of the object to be detected;
a determination unit that determines the volume based on the thickness and the area.
Optionally, the porosity measuring device further comprises:
and the sending module is used for sending the porosity to a display terminal.
The porosity measuring device provided in the embodiments of the present application is described below, and the porosity measuring device described below and the porosity measuring method described above may be referred to correspondingly.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a porosity measurement apparatus provided in an embodiment of the present application, where the porosity measurement apparatus includes:
a memory 11 for storing a computer program;
a processor 12 for implementing the steps of any of the porosity measurement methods described above when executing the computer program.
The present application further provides a porosity measurement system comprising:
the porosity measuring apparatus according to the above-described embodiment,
a solid-state density meter is arranged on the device,
and (4) vacuumizing equipment.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The porosity measurement methods, devices, apparatuses, and systems provided herein are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A method of porosity measurement, comprising:
acquiring the dry weight and the volume of an object to be detected;
acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed;
and determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
2. The porosity measurement method according to claim 1, wherein determining the porosity of the object to be measured from the dry weight, the float weight, the volume, and the density of the infiltrative solution at normal temperature includes:
according to
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
3. The porosity measurement method according to claim 1, wherein, when the object to be measured is a regular-shaped object, the determination of the volume of the object to be measured includes:
acquiring the thickness and the area of the object to be detected;
determining the volume from the thickness and the area.
4. The porosity measurement method according to any one of claims 1 to 3, further comprising, after the determining the porosity of the object to be measured:
and sending the porosity to a display terminal.
5. A porosity measurement device, comprising:
the first acquisition module is used for acquiring the dry weight and the volume of the object to be detected;
the second acquisition module is used for acquiring the floating weight of the object to be measured in the solid densimeter after the object is fully soaked; the object to be measured is completely immersed in the immersion type solution after being sufficiently immersed, and is obtained under the condition of vacuumizing, the liquid in the solid densimeter is the immersion type solution, and the volume of the object to be measured is the same as that of the object to be measured after being sufficiently immersed;
and the determining module is used for determining the porosity of the object to be detected according to the dry weight, the floating weight, the volume and the density of the infiltration type solution at normal temperature.
6. The porosity measurement device of claim 5, wherein the determination module is configured to determine the porosity based on
Determining the porosity of the object to be detected;
wherein ε is the density of the wetting solution at room temperature, M0Is the dry weight of the object to be measured, M1Is the floating weight, V, of the object to be measured after full infiltration0Is the volume of the object to be measured.
7. The porosity measurement device of claim 5, wherein the first acquisition module comprises:
the acquisition unit is used for acquiring the thickness and the area of the object to be detected;
a determination unit that determines the volume based on the thickness and the area.
8. The porosity measurement device of claim 5, further comprising:
and the sending module is used for sending the porosity to a display terminal.
9. A porosity measurement device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the porosity measurement method according to any one of claims 1 to 4 when executing the computer program.
10. A porosity measurement system, comprising:
porosity measuring device according to claim 9,
a solid-state density meter is arranged on the device,
and (4) vacuumizing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025638.7A CN113607624A (en) | 2021-09-02 | 2021-09-02 | Porosity measurement method, device, equipment and system |
Applications Claiming Priority (1)
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