CN106970013A - A kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device - Google Patents
A kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device Download PDFInfo
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- CN106970013A CN106970013A CN201710154555.5A CN201710154555A CN106970013A CN 106970013 A CN106970013 A CN 106970013A CN 201710154555 A CN201710154555 A CN 201710154555A CN 106970013 A CN106970013 A CN 106970013A
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- 238000012360 testing method Methods 0.000 title claims abstract description 289
- 238000009792 diffusion process Methods 0.000 title claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000006101 laboratory sample Substances 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 42
- 239000000523 sample Substances 0.000 claims description 65
- 238000012545 processing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 239000008393 encapsulating agent Substances 0.000 claims description 11
- 239000000565 sealant Substances 0.000 claims description 11
- 241000208340 Araliaceae Species 0.000 claims description 4
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 4
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 4
- 235000008434 ginseng Nutrition 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 238000005660 chlorination reaction Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 25
- 230000001052 transient effect Effects 0.000 abstract description 6
- 238000010297 mechanical methods and process Methods 0.000 description 5
- 230000005226 mechanical processes and functions Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013100 final test Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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Abstract
The invention discloses a kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device, by there is the laboratory sample for being handled and being fixed by predetermined way on fixed station, and when the temperature of the laboratory sample meets preparatory condition, test point at least two instrument connections in each instrument connection is obtained at least two not one-to-one at least two humidity parameters in the same time by humidity tester, further pass through distance of the test point away from the first humidity face at least two instrument connection in each instrument connection again, at the time of different with described at least two, with at least two humidity parameters of the test point in each instrument connection, determine the water vapor diffusion coefficient of the laboratory sample.All test results in technical scheme are transient results, and test is time-consuming less and is avoided that disturbing factor, therefore with the technique effect for improving testing efficiency with improving test result precision.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of water vapor diffusion coefficient testing method and vapor expand
Dissipate coefficient testing device.
Background technology
At present, the water vapor diffusion coefficient of porous construction material is generally by water vapor permeation coefficient combination sorption isotherm curve
Calculating is tried to achieve, and steady state test mode is typically used for both rear measure.Wherein, when vapor is just diffused through in material internal
The measurement carried out when in journey, is referred to as " transient test "；And the survey carried out when the disperse state of vapor is in steady state
Amount, is referred to as " steady state test ".Because vapor is transmitted slowly in porous building materials, time-consuming, efficiency for traditional steady state test method
It is low.Even if in the prior art water vapor diffusion coefficient results, but this can be obtained by the test bed test of a variety of unstable state
Either a little unstable state are test bed time-consuming longer in test, or test result is compared with actual water vapor diffusion coefficient value
There is relatively large deviation, or even the test bed meeting in test process of some unstable state produces larger break to the structure of test sample
It is bad, therefore the result tested out and the actual value of water vapor diffusion coefficient still have certain error.
It can be seen that, the testing stand that test water vapor diffusion coefficient is there is in the prior art is generally tested using steady state way,
Time-consuming for test process, efficiency is low, and the actual water vapor diffusion coefficient value deviation of unstable state method of testing test result is larger
Technical problem.
The content of the invention
The application provides a kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device, to solve
The testing stand that there is test water vapor diffusion coefficient in the prior art is generally tested using steady state way, and test process takes
Long, efficiency is low, the larger technical problem of the actual water vapor diffusion coefficient value deviation of unstable state method of testing test result.
On the one hand the application provides a kind of water vapor diffusion coefficient testing method, including：
A kind of water vapor diffusion coefficient testing method, including：
On the fixed station of water vapor diffusion coefficient testing device laboratory sample, and the experiment are fixed with by predetermined way
When the temperature of sample meets preparatory condition, the test at least two instrument connections in each instrument connection is obtained by humidity tester
O'clock at least two not one-to-one at least two humidity parameters in the same time；
Based on the test point at least two instrument connection in each instrument connection relative between the first humidity face away from
From and it is described at least two it is different at the time of and each instrument connection in test point at least two humidity parameter,
Determine the water vapor diffusion coefficient of the laboratory sample.
Wherein, the laboratory sample be in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged
Other surfaces uniformly coat sealant, and the sample for forming at least two instrument connections on the 3rd face of the testing sample and obtaining
Product, the inside of the instrument connection is included between the test point of each instrument connection in a test point, at least two instrument connection
Dispersal direction of the line with vapor by first humidity towards the second humidity face it is consistent, the predetermined way is institute
The the first humidity face for stating laboratory sample is located in the first environment room with the first humidity of the test device, the experiment sample
Second humidity face of product is located in the second environment room with the second humidity of the test device, and first humidity is more than institute
The second humidity is stated, the preparatory condition is the temperature difference between the surface temperature and environment temperature of the laboratory sample in default threshold
In the range of value, and the environment temperature is preset temperature.
Alternatively, the aperture of the instrument connection is less than or equal to default aperture.
Alternatively, the distance between test point at least two instrument connection per two neighboring instrument connection is default
Distance.
Alternatively, the test point obtained by humidity tester at least two instrument connection in each instrument connection
In at least two not one-to-one at least two humidity parameters in the same time, including：
By corresponding at least two humidity testers in the test point being arranged at least two instrument connection
Test obtains at least two humidity parameters of the test point in each instrument connection respectively.
Alternatively, the laboratory sample be in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged
Other surfaces uniformly coat sealant, and form on the 3rd face of the testing sample at least two instrument connections, then by institute
The each instrument connection stated in the first humidity face and the second humidity face and at least two instrument connection passes through encapsulant
The sample for being sealed and being obtained.
Alternatively, at least two humidity tester is described for the laboratory sample is fixed on by the predetermined way
After on fixed station, the encapsulant on each instrument connection is removed, and one-to-one corresponding is arranged at least two test
The humidity tester in test point in hole；
At least two humidity parameter is to be arranged on the first humidity face and the second humidity face removing
After encapsulant, the wet of the test point that obtains in each instrument connection is tested respectively by least two humidity tester
Spend parameter.
Alternatively, the test point based at least two instrument connection in each instrument connection is relative to described first
The distance between humidity face and it is described at least two it is different at the time of and test point in each instrument connection at least two
Individual humidity parameter, determines the water vapor diffusion coefficient of the laboratory sample, including：
Based on calculating formula：Obtain the water vapor diffusion system of the laboratory sample
Number, wherein, C is the volumetric concentration of vapor,It is wet for described at least two based on the test point in each instrument connection
The relative humidity pa of gain of parameter is spent, t is that x is each based on described at least two diffusion times obtained at the time of different
Test point in instrument connection is relative to the distance between the first humidity face, and D is the water vapor diffusion coefficient.
Alternatively, by the operation gloves that are sealingly disposed in the test device to the sample in the test device and
Equipment is operated.
On the other hand, the embodiment of the present application additionally provides a kind of water vapor diffusion coefficient testing device, including：
First environment room, interior has the first humidity；
Second environment room, is adjacent to the first environment room, and interior has the second humidity less than first humidity；
Fixed station, laboratory sample is fixedly installed between the first environment room and the second environment room, its
In, the laboratory sample is to pass through other tables in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged
Face uniformly coats sealant, and forms on the 3rd face of the testing sample sample of at least two instrument connections, the test
The line that the inside in hole is included between the test point of each instrument connection in a test point, at least two instrument connection steams with water
Dispersal direction of the gas by first humidity towards the second humidity face is consistent；
Humidity tester, to obtain the test point at least two instrument connection in each instrument connection at least two
Not one-to-one at least two humidity parameter in the same time, and at least two humidity parameter is transmitted to processing equipment；
The processing equipment, based on the test point at least two instrument connection in each instrument connection relative to described
The distance between one humidity face and it is described at least two it is different at the time of and test point in each instrument connection it is described
At least two humidity parameters, determine the water vapor diffusion coefficient of the laboratory sample.
Alternatively, the humidity tester includes：
At least two humidity testers, and the probe size of the humidity tester is less than or equal to preset diameters.
Alternatively, anhydrous calcium chloride is additionally provided with the dry environment room, so that relative in the second environment room
Humidity differences between humidity and 0% are less than or equal to a default rh value.
Alternatively, the test device also includes：
Operate on gloves, the side for being sealingly disposed in the test device, the sample to the inside to the test device
Product and equipment are operated.
Alternatively, the test device also includes：
Forced Air Convection device, is arranged in the test device, so that the first environment room and the second environment
Indoor humidity is uniform and stable.
Alternatively, the test device also includes：
Constant temperature system, so that the internal temperature of the test device keeps being in predetermined temperature range.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
Technical scheme in the embodiment of the present application can exist on the fixed station of water vapor diffusion coefficient testing device presses
The laboratory sample that predetermined way is fixed, and the temperature of the laboratory sample is when meeting preparatory condition, is obtained by humidity tester
Test point at least two instrument connection in each instrument connection at least two not in the same time one-to-one at least two
Individual humidity parameter, further again by processing equipment based on the test point at least two instrument connection in each instrument connection away from
The test point at the time of distance in the first humidity face and at least two difference and in each instrument connection is extremely
Few two humidity parameters, determine water vapor diffusion coefficient of the laboratory sample under different relative humidity.Meanwhile, the experiment
Sample is the sample that processing was carried out according to predetermined manner.All test knots during the method for testing of the embodiment of the present application
Fruit is transient results, and test is time-consuming relatively fewer, and can avoid other a variety of disturbing factors in test process, obtains
The accuracy of water vapor diffusion coefficient is high, therefore there is the technical scheme in the embodiment of the present application raising testing efficiency and raising to survey
The technique effect of test result precision.
The embodiment of the present application at least also has the following technical effect that or advantage：
Further, the instrument connection aperture that the technical scheme in the embodiment of the present application can be set on the testing sample
It is smaller, it is possible thereby to avoid causing the material structure of testing sample extensive damage, the primary condition for making sample and material
Boundary condition keeps stable so that test result is closer to actual result.Therefore, the technical scheme in the embodiment of the present application is also
Technique effect with the further accuracy for improving test result.
Further, the technical scheme in the embodiment of the present application can also be by least two instrument connection every adjacent two
The distance between test point in individual instrument connection is set to identical distance.For example, between the adjacent instrument connection of each two away from
From for 5 centimetres, 10 centimetres, etc..It is possible thereby to the computational complexity for calculating the water vapor diffusion coefficient is reduced, therefore tool
It is improved the technique effect for calculating testing efficiency.
Further, in actual mechanical process, the humidity tester that probe size can be selected small is placed on the survey
In prospect hole, and then corresponding humidity parameter in each instrument connection of acquisition can be corresponded.Therefore the skill in the embodiment of the present application
Art scheme can also ensure that the structure of the laboratory sample avoids largely being destroyed, and has into one in terms of tester
Step ensures the technique effect of the accuracy of test result.
Further, the technical scheme in the embodiment of the present application can also use encapsulant by the instrument connection and institute
The first humidity face and the second humidity face is stated to be sealed, it is possible thereby to avoid by the laboratory sample be fixed to it is described solid
Vapor spreads from instrument connection or the first humidity face or the second humidity face before determining platform, has influence on final test
As a result.Therefore, the technical scheme in the embodiment of the present application also has the technique effect for being further ensured that test result precision.
Further, the technical scheme in the embodiment of the present application can seal the manipulator of setting in the test device
Set, staff can be by putting on the operation gloves to the article that is arranged in the water vapor diffusion coefficient testing device
Or equipment carries out various operations, it is to avoid in operation the gas in the external world, impurity or it is other can be to test device internal environment
The factor impacted is entered in test device.Therefore have and be further ensured that the accuracy of test result and the skill of validity
Art effect.
Brief description of the drawings
Fig. 1 is a kind of flow chart of water vapor diffusion coefficient testing method provided in an embodiment of the present invention；
Fig. 2 is a kind of structure chart of water vapor diffusion coefficient testing device provided in an embodiment of the present invention.
Embodiment
The application provides a kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device, to solve
The testing stand that there is test water vapor diffusion coefficient in the prior art is generally tested using steady state way, and test process takes
Long, efficiency is low, the larger technical problem of the actual water vapor diffusion coefficient value deviation of unsteady method test result.
Technical scheme in the embodiment of the present application is in order to solve the above technical problems, general thought is as follows：
Technical scheme in the embodiment of the present application can be by existing on fixed station by predetermined way is handled and is fixed
Laboratory sample, and when the temperature of the laboratory sample meets preparatory condition, by least two described in humidity tester acquisition
Test point in individual instrument connection in each instrument connection is entered at least two not one-to-one at least two humidity parameters in the same time
One step again by processing equipment based on the test point at least two instrument connection in each instrument connection away from first humidity
At least two humidity ginseng of test point at the time of the distance in face and at least two difference and in each instrument connection
Number, determines water vapor diffusion coefficient of the laboratory sample under different relative humidity.All surveys in technical scheme
Test result is transient results, and test is time-consuming relatively fewer, and is avoided that other disturbing factors, therefore in the embodiment of the present application
Technical scheme has the technique effect for improving testing efficiency and improving test result precision.
Technical scheme is described in detail below by accompanying drawing and specific embodiment, it should be understood that the application
Specific features in embodiment and embodiment are the detailed description to technical scheme, rather than to present techniques
The restriction of scheme, in the case where not conflicting, the technical characteristic in the embodiment of the present application and embodiment can be mutually combined.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, herein
Middle character "/", it is a kind of relation of "or" to typically represent forward-backward correlation object.
Embodiment one
Fig. 1 is refer to, the embodiment of the present application one provides a kind of water vapor diffusion coefficient testing method, including：
Step 101：Laboratory sample is fixed with by predetermined way on the fixed station of water vapor diffusion coefficient testing device, and
When the temperature of the laboratory sample meets preparatory condition, each instrument connection at least two instrument connections is obtained by humidity tester
Interior test point is at least two not one-to-one at least two humidity parameters in the same time.
Step 102：It is relative based on the test point at least two instrument connection in each instrument connection by processing equipment
Test at the time of the distance between described first humidity face and at least two difference and in each instrument connection
At least two humidity parameter of point, determines the water vapor diffusion coefficient of the laboratory sample.
Wherein, the laboratory sample be in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged
Other surfaces uniformly coat sealant, and the sample for forming at least two instrument connections on the 3rd face of the testing sample and obtaining
Product, the inside of the instrument connection is included between the test point of each instrument connection in a test point, at least two instrument connection
Dispersal direction of the line with vapor by first humidity towards the second humidity face it is consistent, the predetermined way is institute
The the first humidity face for stating laboratory sample is located in the first environment room with the first humidity of the test device, the experiment sample
Second humidity face of product is located in the second environment room with the second humidity of the test device, and first humidity is more than institute
The second humidity is stated, the preparatory condition is the temperature difference between the surface temperature and environment temperature of the laboratory sample in default threshold
In the range of value, and the environment temperature is preset temperature.
In a kind of possible embodiment, the first humidity face can be humidity ginseng maximum at least two humidity parameters
The place face of the corresponding instrument connection of number, also, the first humidity face can also be between the test point in each instrument connection
Line.
The testing sample can use to need to measure the article made by the material of water vapor diffusion coefficient.Also,
The shape of the testing sample can be a variety of.Because the diffusion property of vapor is to be dissipated from any in material to surrounding,
Therefore can be by other all surfaces of the testing sample in addition to the first humidity face and the second humidity face all
Painting is covered with sealant, it is possible thereby to ensure dispersal direction of the vapor in the testing sample be from the first humidity face to
The second humidity face, it is to avoid vapor is lost in cause to survey in test process to the diffusion of other faces during uncoated sealant
Test result is not accurate.
Can be with because the first humidity face and the second humidity face can be to be oppositely arranged, thus in test process
By setting test point in the material between the first humidity face and the second humidity face, and gather at the test point
Humidity parameter, for example, when the testing sample be cylinder when, the first humidity face and the second humidity face can be
Two bottom surfaces of the cylinder, trunk portion that further can be between the first humidity face and the second humidity face
The surface location divided sets the test point；When the testing sample is the object of circle drum type, the first humidity face and institute
Two drum surfaces that the second humidity face can be the object of the round drum type are stated, further can be in the first humidity face and institute
The interior location for stating the spherical part between the second humidity face sets described test point, etc..
Corresponding testing tool and method of testing then can be further taken after the test point is set and is obtained
All kinds of parameters of the vapor needed for during the second humidity face is gradually diffused into by the first humidity face.For example,
Each test point at a time on humidity parameter, when the humidity in the first test point reach with the second test point at certain for the moment
Time parameter undergone during the same humidity engraved, etc..Calculation can be further used according to these parameters, is estimated
The various ways such as mode obtain the corresponding water vapor diffusion coefficient of material for making the testing sample.
It is pointed out that when the test device using the embodiment of the present application carries out the test of water vapor diffusion coefficient, can
So that the laboratory sample is placed in the test device until the surface temperature and/or internal temperature and ring of the laboratory sample
Border temperature is in close state, then by ensureing that the temperature inside the test device tends to be constant, thus may be such that in test
During laboratory sample temperature also tend to stabilization, it is to avoid because being made the reason for the temperature difference is larger to the diffusion of vapor in test process
Into influence.
On the other hand, need the first humidity face of the laboratory sample being located at the test device in test process
In first environment room with the first humidity, the second humidity face of the laboratory sample has second positioned at the test device
In the second environment room of humidity.This is due to the humidity that humidity in the first environment room is more than in second environment room, therefore
Psychrometric difference power can be provided and be diffused so as to obtain vapor by first humidity towards the direction in the second humidity face.
In actual mechanical process, the anti-solution Fick's second law of Boltzmann conversion can be passed through
The associated ideal equation of gas state and relative humidity definition, are tried to achieve under isothermy, the water vapor diffusion under different relative humidity
Coefficient, mathematic(al) representation includes but is not limited to as follows：
Wherein, C is the volumetric concentration of vapor,For based at least two described in the test point in each instrument connection
The relative humidity pa that individual humidity parameter is obtained, t is that, based on described at least two diffusion times obtained at the time of different, x is
Test point in each instrument connection is relative to the distance between the first humidity face, and D is the water vapor diffusion coefficient.
Certainly, above-mentioned calculating formula can also have other versions, therefore can be by using in actual mechanical process
Test point at least two instrument connection in each instrument connection relative to the first humidity face distance and it is described at least
At least two humidity parameters of test point at the time of two differences and in each instrument connection, are determined with a variety of calculating formulas
Go out the water vapor diffusion coefficient for the material for making the testing sample.
As can be seen here, the technical scheme in the embodiment of the present application can water vapor diffusion coefficient testing device fixed station
Upper have a laboratory sample fixed by predetermined way, and the temperature of the laboratory sample is when meeting preparatory condition, passes through humidity
The test point that tester obtains at least two instrument connection in each instrument connection is not corresponded in the same time at least two
At least two humidity parameters, further again by processing equipment based at least two instrument connection in each instrument connection
Distance of the test point away from the first humidity face and it is described at least two it is different at the time of and each instrument connection in survey
At least two humidity parameters of pilot, determine water vapor diffusion coefficient of the laboratory sample under different relative humidity.Meanwhile,
The laboratory sample is the sample that processing was carried out according to predetermined manner.Institute during the method for testing of the embodiment of the present application
It is transient results to have test result, and test is time-consuming relatively fewer, and can avoid in test process other a variety of interference because
Element, the accuracy of obtained water vapor diffusion coefficient is high, therefore the technical scheme in the embodiment of the present application has raising test effect
Rate and the technique effect for improving test result precision.
Alternatively, the aperture of the instrument connection is less than or equal to default aperture.
That is, in practical operation, the instrument connection aperture set on the testing sample can be it is smaller, thus
It can avoid causing the material structure of testing sample the boundary condition of extensive damage, the primary condition for making sample and material from protecting
It is fixed to keep steady so that test result is closer to actual result.Therefore, the technical scheme in the embodiment of the present application also has further
Improve the technique effect of the accuracy of test result.
Alternatively, the distance between test point at least two instrument connections in every two neighboring instrument connection is
Pre-determined distance.
That is, the technical scheme in the embodiment of the present application can also be by least two instrument connection every adjacent two
The distance between test point in individual instrument connection is set to identical distance.For example, between the adjacent instrument connection of each two away from
From for 5 centimetres, 10 centimetres, etc..It is possible thereby to the computational complexity for calculating the water vapor diffusion coefficient is reduced, therefore tool
It is improved the technique effect for calculating testing efficiency.
Alternatively, the test point obtained by humidity tester at least two instrument connection in each instrument connection
In at least two not one-to-one at least two humidity parameters in the same time, including：
By corresponding at least two humidity testers in the test point being arranged at least two instrument connection
Test obtains at least two humidity parameters of the test point in each instrument connection respectively.
In actual mechanical process, the humidity tester that probe size can be selected small is placed in the instrument connection, is entered
And corresponding humidity parameter in each instrument connection of acquisition can be corresponded.Therefore the technical scheme in the embodiment of the present application may be used also
Avoid largely being destroyed with the structure for ensureing the laboratory sample in terms of tester, with being further ensured that test
As a result the technique effect of accuracy.
Alternatively, the laboratory sample be in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged
Other surfaces uniformly coat sealant, and form on the 3rd face of the testing sample at least two instrument connections, then by institute
The each instrument connection stated in the first humidity face and the second humidity face and at least two instrument connection passes through encapsulant
The sample for being sealed and being obtained.
Because instrument connection is the position that hollows out the laboratory sample, therefore the surface being in contact with air is formd, similarly,
The first humidity face and the second humidity face are also the surface that is in contact with air, in order to avoid by the laboratory sample
Spread, influence from instrument connection or the first humidity face or the second humidity face fixed to vapor before the fixed station
To final test result, therefore encapsulant can be used by the instrument connection and the first humidity face and described second
Humidity face is sealed.It can be seen that, the technical scheme in the embodiment of the present application, which also has, is further ensured that test result precision
Technique effect.
Alternatively, at least two humidity tester is described for the laboratory sample is fixed on by the predetermined way
After on fixed station, the encapsulant on each instrument connection is removed, and one-to-one corresponding is arranged at least two test
The humidity tester in test point in hole；
At least two humidity parameter is to be arranged on the first humidity face and the second humidity face removing
After encapsulant, the wet of the test point that obtains in each instrument connection is tested respectively by least two humidity tester
Spend parameter.
Alternatively, the test point based at least two instrument connection in each instrument connection is relative to described first
The distance between humidity face and it is described at least two it is different at the time of and test point in each instrument connection at least two
Individual humidity parameter, determines the water vapor diffusion coefficient of the laboratory sample, including：
Based on calculating formula：Obtain the water vapor diffusion system of the laboratory sample
Number, wherein, C is the volumetric concentration of vapor,It is wet for described at least two based on the test point in each instrument connection
The relative humidity pa of gain of parameter is spent, t is that x is each based on described at least two diffusion times obtained at the time of different
Test point in instrument connection is relative to the distance between the first humidity face, and D is the water vapor diffusion coefficient.
Alternatively, by the operation gloves that are sealingly disposed in the test device to the sample in the test device and
Equipment is operated.
That is, staff can be surveyed by putting on the operation gloves to being arranged on the water vapor diffusion coefficient
Trial assembly put in article or equipment carry out various operations, because the operation gloves are set for sealing, do not have extraneous gas,
Impurity other can be entered in test device to the factor that test device internal environment is impacted.Therefore staff is adopting
The environment inside test device will not be had any impact with during the operation of the operation gloves, knot is tested with being further ensured that
The accuracy of fruit and the technique effect of validity.
Embodiment two
Fig. 2 is refer to, the embodiment of the present application two provides a kind of water vapor diffusion coefficient testing device, including：
First environment room 201, interior has the first humidity；
Second environment room 202, is adjacent to the first environment room 201, and interior has second less than first humidity
Humidity；
Fixed station 203, laboratory sample is fixedly installed on into the first environment room 201 and the second environment room
Between 202, wherein, the laboratory sample be by testing sample remove the first humidity face for being oppositely arranged and the second humidity face it
Outer other surfaces uniformly coat sealant, and form on the 3rd face of the testing sample sample of at least two instrument connections
Product, the inside of the instrument connection is included between the test point of each instrument connection in a test point, at least two instrument connection
Dispersal direction of the line with vapor by first humidity towards the second humidity face it is consistent；
Humidity tester 204, to obtain the test point at least two instrument connection in each instrument connection at least
Two not one-to-one at least two humidity parameters in the same time, and it is wet to the processing equipment 205 to transmit described at least two
Spend parameter；
Processing equipment 205, based on the test point at least two instrument connection in each instrument connection relative to described
The distance between one humidity face and it is described at least two it is different at the time of and test point in each instrument connection it is described
At least two humidity parameters, determine the water vapor diffusion coefficient of the laboratory sample.
In a kind of possible embodiment, processing equipment 205 can be connected with humidity tester 204.
Alternatively, the humidity tester 204 includes：
At least two humidity testers 204, and the probe size of the humidity tester 204 is less than or equal to preset diameters.
Alternatively, anhydrous calcium chloride is additionally provided with the dry environment room, so that the phase in the second environment room 202
Humidity differences between humidity and 0% are less than or equal to a default rh value.
Alternatively, the test device also includes：
Operate on gloves 206, the side for being sealingly disposed in the test device, to the inside to the test device
Sample and equipment are operated.
Alternatively, the test device also includes：
Forced Air Convection device 207, is arranged in the test device, so that the first environment room 201 and described
Humidity is uniform and stable in two environmental chambers 202.
Alternatively, the test device also includes：
Constant temperature system, so that the internal temperature of the test device keeps being in predetermined temperature range.
Various change mode in water vapor diffusion coefficient testing method and instantiation in the embodiment of earlier figures 1 is same
Suitable for the water vapor diffusion coefficient testing device of the present embodiment, by foregoing to the detailed of water vapor diffusion coefficient testing method
Description, those skilled in the art are clear that the implementation of vapor device for testing diffusion coefficient in the present embodiment,
So it is succinct for specification, it will not be described in detail herein.
As can be seen here, the technical scheme in the embodiment of the present application can water vapor diffusion coefficient testing device fixed station
Upper have a laboratory sample fixed by predetermined way, and the temperature of the laboratory sample is when meeting preparatory condition, passes through humidity
The test point that tester obtains at least two instrument connection in each instrument connection is not corresponded in the same time at least two
At least two humidity parameters, further again by processing equipment based at least two instrument connection in each instrument connection
Distance of the test point away from the first humidity face and it is described at least two it is different at the time of and each instrument connection in survey
At least two humidity parameters of pilot, determine water vapor diffusion coefficient of the laboratory sample under different relative humidity.Meanwhile,
The laboratory sample is the sample that processing was carried out according to predetermined manner.Institute during the method for testing of the embodiment of the present application
It is transient results to have test result, and test is time-consuming relatively fewer, and can avoid in test process other a variety of interference because
Element, the accuracy of obtained water vapor diffusion coefficient is high, therefore the technical scheme in the embodiment of the present application has raising test effect
Rate and the technique effect for improving test result precision.
The embodiment of the present application at least also has the following technical effect that or advantage：
Further, the instrument connection aperture that the technical scheme in the embodiment of the present application can be set on the testing sample
It is smaller, it is possible thereby to avoid causing the material structure of testing sample extensive damage, the primary condition for making sample and material
Boundary condition keeps stable so that test result is closer to actual result.Therefore, the technical scheme in the embodiment of the present application is also
Technique effect with the further accuracy for improving test result.
Further, the technical scheme in the embodiment of the present application can also be by least two instrument connection every adjacent two
The distance between test point in individual instrument connection is set to identical distance.For example, between the adjacent instrument connection of each two away from
From for 5 centimetres, 10 centimetres, etc..It is possible thereby to the computational complexity for calculating the water vapor diffusion coefficient is reduced, therefore tool
It is improved the technique effect for calculating testing efficiency.
Further, in actual mechanical process, the humidity tester that probe size can be selected small is placed on the survey
In prospect hole, and then corresponding humidity parameter in each instrument connection of acquisition can be corresponded.Therefore the skill in the embodiment of the present application
Art scheme can also ensure that the structure of the laboratory sample avoids largely being destroyed, and has into one in terms of tester
Step ensures the technique effect of the accuracy of test result.
Further, the technical scheme in the embodiment of the present application can also use encapsulant by the instrument connection and institute
The first humidity face and the second humidity face is stated to be sealed, it is possible thereby to avoid by the laboratory sample be fixed to it is described solid
Vapor spreads from instrument connection or the first humidity face or the second humidity face before determining platform, has influence on final test
As a result.Therefore, the technical scheme in the embodiment of the present application also has the technique effect for being further ensured that test result precision.
Further, the technical scheme in the embodiment of the present application can seal the manipulator of setting in the test device
Set, staff can be by putting on the operation gloves to the article that is arranged in the water vapor diffusion coefficient testing device
Or equipment carries out various operations, it is to avoid in operation the gas in the external world, impurity or it is other can be to test device internal environment
The factor impacted is entered in test device.Therefore have and be further ensured that the accuracy of test result and the skill of validity
Art effect.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.Further, each method and step in technical scheme can be overturned, and converted sequencing and still fallen
Enter in the invention scope that the application is covered.So, if these modifications and variations of the application belong to the application claim
And its within the scope of equivalent technologies, then the application is also intended to comprising including these changes and modification.
Claims (14)
1. a kind of water vapor diffusion coefficient testing method, it is characterised in that including：
On the fixed station of water vapor diffusion coefficient testing device laboratory sample, and the laboratory sample are fixed with by predetermined way
Temperature when meeting preparatory condition, the test point obtained by humidity tester at least two instrument connections in each instrument connection exists
At least two not one-to-one at least two humidity parameters in the same time；
Based on the test point at least two instrument connection in each instrument connection relative to the distance between first humidity face and
At least two humidity parameter of test point at the time of at least two difference and in each instrument connection, it is determined that
The water vapor diffusion coefficient of the laboratory sample；
Wherein, the laboratory sample is other in addition to the first humidity face and the second humidity face that are oppositely arranged in testing sample
Surface uniformly coats sealant, and the sample for forming at least two instrument connections on the 3rd face of the testing sample and obtaining,
The inside of the instrument connection includes the company between the test point of each instrument connection in a test point, at least two instrument connection
Dispersal direction of the line with vapor by first humidity towards the second humidity face is consistent, and the predetermined way is the reality
The the first humidity face for testing sample is located in the first environment room with the first humidity of the test device, the laboratory sample
Second humidity face is located in the second environment room with the second humidity of the test device, and first humidity is more than described the
Two humidity, the preparatory condition is the temperature difference between the surface temperature and environment temperature of the laboratory sample in predetermined threshold value model
In enclosing, and the environment temperature is preset temperature.
2. the method as described in claim 1, it is characterised in that the aperture of the instrument connection is less than or equal to default aperture.
3. the method as described in claim 1, it is characterised in that at least two instrument connection in every two neighboring instrument connection
The distance between test point be pre-determined distance.
4. the method as described in claim 1, it is characterised in that described that at least two test is obtained by humidity tester
Test point in hole in each instrument connection at least two not one-to-one at least two humidity parameters in the same time, including：
Distinguished by least two humidity testers corresponded in the test point being arranged at least two instrument connection
Test obtains at least two humidity parameters of the test point in each instrument connection.
5. method as claimed in claim 4, it is characterised in that the laboratory sample be testing sample remove be oppositely arranged the
Other surfaces outside one humidity face and the second humidity face uniformly coat sealant, and the shape on the 3rd face of the testing sample
Into at least two instrument connections, then by the first humidity face and the second humidity face and at least two instrument connection
Each instrument connection sample for being sealed and being obtained by encapsulant.
6. method as claimed in claim 5, it is characterised in that at least two humidity tester is by the laboratory sample
After being fixed on by the predetermined way on the fixed station, the encapsulant on each instrument connection is removed, and one a pair
The humidity tester in the test point at least two instrument connection should be arranged on；
At least two humidity parameter is to remove the sealing that is arranged on the first humidity face and the second humidity face
After material, the humidity ginseng for obtaining the test point in each instrument connection is tested respectively by least two humidity tester
Number.
7. the method as described in claim 1, it is characterised in that described to be based on each instrument connection at least two instrument connection
It is at the time of interior test point is relative to the distance between described first humidity face and at least two difference and described each
At least two humidity parameters of the test point in instrument connection, determine the water vapor diffusion coefficient of the laboratory sample, including：
Based on calculating formula：The water vapor diffusion coefficient of the laboratory sample is obtained,
Wherein, C is the volumetric concentration of vapor,For at least two humidity ginseng based on the test point in each instrument connection
The relative humidity pa that number is obtained, t is that, based on described at least two diffusion times obtained at the time of different, x is each test
Test point in hole is relative to the distance between the first humidity face, and D is the water vapor diffusion coefficient.
8. the method as described in claim 1-7 any claims, it is characterised in that filled by being sealingly disposed in the test
The operation gloves put are operated to the sample and equipment in the test device.
9. a kind of water vapor diffusion coefficient testing device, it is characterised in that including：
First environment room, interior has the first humidity；
Second environment room, is adjacent to the first environment room, and interior has the second humidity less than first humidity；
Fixed station, laboratory sample is fixedly installed between the first environment room and the second environment room, wherein, institute
It is equal by other surfaces in testing sample in addition to the first humidity face and the second humidity face that are oppositely arranged to state laboratory sample
Even coating sealant, and the sample of at least two instrument connections is formed on the 3rd face of the testing sample, the instrument connection
Inside includes a test point, the line between the test point of each instrument connection at least two instrument connection and vapor by
Dispersal direction of first humidity towards the second humidity face is consistent；
Humidity tester, it is different at least two to obtain the test point at least two instrument connection in each instrument connection
Moment one-to-one at least two humidity parameter, and transmit at least two humidity parameter to processing equipment；
The processing equipment, it is wet relative to described first based on the test point at least two instrument connection in each instrument connection
The distance between degree face and it is described at least two it is different at the time of and test point in each instrument connection it is described at least
Two humidity parameters, determine the water vapor diffusion coefficient of the laboratory sample.
10. test device as claimed in claim 9, it is characterised in that the humidity tester includes：
At least two humidity testers, and the probe size of the humidity tester is less than or equal to preset diameters.
11. test device as claimed in claim 9, it is characterised in that be additionally provided with anhydrous chlorination in the dry environment room
Calcium, so that the humidity differences between relative humidity and 0% in the second environment room are less than or equal to a default rh value.
12. test device as claimed in claim 9, it is characterised in that the test device also includes：
Operate gloves, on the side for being sealingly disposed in the test device, to the inside to the test device sample and
Equipment is operated.
13. test device as claimed in claim 9, it is characterised in that the test device also includes：
Forced Air Convection device, is arranged in the test device, so that in the first environment room and the second environment room
Humidity is uniform and stable.
14. test device as claimed in claim 9, it is characterised in that the test device also includes：
Constant temperature system, so that the internal temperature of the test device keeps being in predetermined temperature range.
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| CN201710154555.5A CN106970013A (en) | 2017-03-15 | 2017-03-15 | A kind of water vapor diffusion coefficient testing method and water vapor diffusion coefficient testing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894376A (en) * | 2017-12-12 | 2018-04-10 | 中国计量大学 | Water vapor diffusion coefficient measuring device and its measuring method |
| CN108645748A (en) * | 2018-04-20 | 2018-10-12 | 浙江大学 | Porous material vapor carry-over factor measuring device and measuring method under temperature gradient |
| CN109827950A (en) * | 2019-03-08 | 2019-05-31 | 北京理工大学 | A kind of testing and analysis system of induced with laser explosion and laser Pyrolysis products |
| CN112964619A (en) * | 2021-02-05 | 2021-06-15 | 浙江大学 | Device and method for measuring interfacial water vapor permeability coefficient of multilayer porous material |
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| CN104849178A (en) * | 2015-05-23 | 2015-08-19 | 浙江大学 | Water vapor diffusion coefficient unsteady state measurement device and method thereof |
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| CN104849178A (en) * | 2015-05-23 | 2015-08-19 | 浙江大学 | Water vapor diffusion coefficient unsteady state measurement device and method thereof |
| CN204630880U (en) * | 2015-05-23 | 2015-09-09 | 浙江大学 | A kind of water vapor diffusion coefficient unsteady-state measuring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894376A (en) * | 2017-12-12 | 2018-04-10 | 中国计量大学 | Water vapor diffusion coefficient measuring device and its measuring method |
| CN108645748A (en) * | 2018-04-20 | 2018-10-12 | 浙江大学 | Porous material vapor carry-over factor measuring device and measuring method under temperature gradient |
| CN109827950A (en) * | 2019-03-08 | 2019-05-31 | 北京理工大学 | A kind of testing and analysis system of induced with laser explosion and laser Pyrolysis products |
| CN112964619A (en) * | 2021-02-05 | 2021-06-15 | 浙江大学 | Device and method for measuring interfacial water vapor permeability coefficient of multilayer porous material |
| CN112964619B (en) * | 2021-02-05 | 2022-06-10 | 浙江大学 | Device and method for measuring interfacial water vapor permeability coefficient of multilayer porous material |
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Application publication date: 20170721 |