CN112666037B - Humidity-adjusting material performance detection device and humidity-adjusting material performance detection method - Google Patents
Humidity-adjusting material performance detection device and humidity-adjusting material performance detection method Download PDFInfo
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Abstract
The invention discloses a humidity-controlling material performance detection device and a humidity-controlling material performance detection method. A humidity-regulating material performance detection device comprises a constant temperature and humidity box, a balance positioned at the upper part of the constant temperature and humidity box, a lifting platform arranged in the constant temperature and humidity box and a sealing bottle with a hole arranged on the lifting platform; the lower end of the balance is connected with a connecting rope, the connecting rope sequentially penetrates through the upper wall of the constant temperature and humidity box, the hollow pipe and the sealing cover downwards, and the lower end of the balance is connected with a sample table. A method for detecting the performance of a humidity-regulating material comprises the steps of placing a sealed bottle with a hole, which is filled with a test solution, on a lifting platform; after the preset humidity and temperature are reached, the lifting platform rises to drive the sample platform with the sample to be placed into the inner cavity of the hole-sealed bottle, and an effective sealing test space is formed among the hole-sealed bottle, the sealing cover, the hollow pipe and the balance; the test started and the balance recorded the weight change of the sample. The invention can reduce the adverse effect of blast air on weighing, automatically weigh in real time and record the weight change of the sample, and improve the detection accuracy.
Description
Technical Field
The invention relates to the field of humidity adjusting performance detection of humidity adjusting materials, in particular to a humidity adjusting material performance detection device and a humidity adjusting material performance detection method.
Background
The indoor air humidity is closely related to human health, and researches show that the indoor humidity is lower than 40% or higher than 70%, and the somatosensory discomfort and various complications can be caused. Therefore, in order to adjust the indoor air humidity and meet the building energy saving requirement, various humidity adjusting materials are invented. The ability of such materials to be evaluated for their ability to control moisture is typically measured by detecting changes in the weight of the material over time as it adsorbs or desorbs moisture. The traditional detection mode is that the manual sample is weighed, puts back the sample behind the record data, because the sample breaks away from the humidity environment of settlement in the sampling process, the accuracy reduces when causing the continuous test, and needs the tester to sample repeatedly when testing for a long time. Therefore, it is necessary to evaluate the performance of the humidity-controlling material by designing a set of apparatus to automatically measure and record the weight change of the material in real time in a specific humidity environment.
The air humidity changes along with the temperature change, and the constant ambient temperature needs to be ensured when the adsorption or desorption capacity of the material to water vapor in a specific humidity environment is to be tested. Creating a locally constant temperature usually requires blowing to maintain the temperature uniform, which is detrimental to precision weighing.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a humidity-adjusting material performance detection device and a humidity-adjusting material performance detection method aiming at the defects in the prior art, and firstly, the influence of air blowing of a constant temperature and humidity box on sample weighing can be reduced; secondly, can weigh and record material weight change in real time automatically in specific humidity environment, can promote the degree of accuracy that detects.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme:
a humidity control material performance detection device is characterized in that: the device comprises a constant temperature and humidity box, wherein a lifting platform is arranged in the constant temperature and humidity box, and a sealing bottle with a hole is arranged at the upper part of the lifting platform; the top of the outer side of the constant temperature and humidity box is provided with a balance which can be used for weighing and automatically recording the weight value in real time, and the lower end of the balance is connected with a connecting rope; the connecting rope sequentially penetrates through the upper wall of the constant temperature and humidity box, a hollow pipe and a sealing cover which are vertically connected to the inner wall of the upper part of the constant temperature and humidity box, and the lower end of the connecting rope is connected with a sample table capable of placing a sample; the sealing cover is positioned between the hollow pipe and the sample table, and the lower end of the sealing cover is detachably connected with the sealing bottle with the hole; the sample stage can be placed into the inner cavity of the sealing bottle with the hole after the lifting platform rises; after the sample table is placed into the inner cavity of the hole-sealed bottle, an effective sealing test space can be formed among the hole-sealed bottle, the sealing cover, the hollow pipe and the balance.
Furthermore, the balance is provided with a hook for hanging and weighing the sample, and the hook is connected with the upper end of the connecting rope, so that the hanging and weighing of the sample can be realized.
Further, the lower end of the hollow pipe is polished to be flat and can be contacted with the top end of the sealing cover; the connecting rope is a nylon rope and does not contact with the inner wall of the hollow pipe.
Further, the sealing cover is detachably connected with the hollow pipe; the hollow tube is a circular hollow tube, the upper end of the sealing cover is provided with a circular through hole which can be covered by the lower end of the hollow tube, and the connecting rope is connected with the sample table through the circular through hole.
Further, the volume of the constant temperature and humidity box is 50 to 200L, and the temperature and humidity inside the box body are kept uniform in an air blowing mode; the control range of the internal temperature of the constant temperature and humidity box is 0 to 60 ℃, and the temperature fluctuation is +/-0.5 ℃; the humidity control range is 20 to 99 percent, and the humidity fluctuation is +/-5 percent.
Further, a box wall hole at the top of the constant temperature and humidity box is a round hole, and the diameter of the round hole is 5 to 40mm; the outer diameter of the hollow pipe is 5 to 40mm; the diameter of the through hole at the top end of the sealing cover is 2 to 8mm; the internal volume of the sealed bottle with the hole is 0.5 to 2L.
Further, a windshield is arranged on the upper portion of the balance.
A method for detecting the performance of a humidity-adjusting material is characterized by comprising the following steps: the humidity-controlling material performance detection device comprises the following steps:
firstly, selecting a test solution according to a required humidity value and placing the test solution into the sealed bottle with the hole;
secondly, placing the sealing bottle with the hole on a lifting platform in a constant temperature and humidity box;
thirdly, adjusting the temperature and humidity value of the constant temperature and humidity box;
fourthly, after the temperature and humidity value reaches a set value, placing a sample on a sample table and suspending the sample on the upper part of the inner cavity of the sealed bottle with the hole; the lifting platform rises, the upper surface of the sealing cover is sealed with the lower end of the hollow tube, the lower end of the sealing cover is sealed with the bottle mouth at the upper end of the sealing bottle with the hole, and an effective closed test space is formed among the sealing bottle with the hole, the sealing cover, the hollow tube and the balance;
and fifthly, recording the weight change of the sample by a balance.
Further, the test solution is a saturated salt solution.
Further, in the fifth step, a balance capable of recording the weight change of the sample in real time is used for recording the weight change of the sample in real time for 24 hours, and the weight data reading interval is set to be 10-20min.
(III) advantageous effects
Compared with the prior art, the invention provides a humidity-controlling material performance detection device and a humidity-controlling material performance detection method, which have the following beneficial effects:
1. creating a locally constant temperature usually requires blowing to maintain the temperature uniform, which is not conducive to precision weighing. After the sample platform is placed in the inner cavity of the hole sealing bottle, an effective sealing test space can be formed among the hole sealing bottle, the sealing cover, the hollow pipe and the balance. The sample, the sample table and the connecting rope are all located in the closed testing space, and the influence of blast air in the constant temperature and humidity box on sample weighing can be avoided.
2. The balance can record the weight of the sample in real time, and can set the interval time of data recording according to the requirement during testing and automatically record the weight change condition of the sample under the specific temperature and humidity conditions; during this test period, the samples can be tested and data recorded continuously without taking out the samples and recording the weight.
The humidity-regulating material performance detection device has the advantages of high test precision and automatic data recording. The humidity-adjusting device can finish the collection of long-time and high-density data points while avoiding the influence of air blowing on precision weighing, can observe the variation trend of the humidity-adjusting material in the humidity-absorbing and releasing rates at different times, and can realize the humidity-absorbing and releasing tests under various temperature and humidity conditions.
Drawings
Fig. 1 is a schematic structural diagram of a humidity-controlling material performance detection apparatus according to the present invention.
Fig. 2 is a data diagram of moisture absorption and release capacity after the performance detection device for the humidity controlling material in the embodiment is used for detecting an intelligent humidity controlling brick.
In the figure:
1-balance, 2-constant temperature and humidity box, 3-sealed bottle with hole, 4-sample, 5-saturated salt solution, 6-lifting table, 7-sample table, 8-hollow tube, 9-connecting rope, 10-box wall hole and 11-sealing cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The invention provides a humidity-controlling material performance detection device, which is characterized in that: the device comprises a constant temperature and humidity box 2, wherein a lifting table 6 is arranged in the constant temperature and humidity box 2, and a sealing bottle 3 with a hole is arranged at the upper part of the lifting table 6; the top of the outer side of the constant temperature and humidity box 2 is provided with a balance 1 which can be used for weighing and automatically recording the weight value in real time, and the lower end of the balance 1 is connected with a connecting rope 9; the connecting rope 9 downwards sequentially penetrates through the upper wall of the constant temperature and humidity box 2, a hollow pipe 8 vertically connected to the inner wall of the upper part of the constant temperature and humidity box 2 and a sealing cover 11, and the lower end of the connecting rope is connected with a sample table 7 capable of placing a sample 4; the sealing cover 11 is positioned between the hollow tube 8 and the sample table 7, and the lower end of the sealing cover is detachably connected with the sealing bottle 3 with the hole; the sample table 7 can be placed in the inner cavity of the sealing bottle with hole 3 after the lifting table 6 is lifted; after the sample table 7 is placed into the inner cavity of the hole-sealed bottle 3, an effective sealing test space can be formed among the hole-sealed bottle 3, the sealing cover 11, the hollow pipe 8 and the balance 1.
Preferably, the balance 1 is provided with a hook for hanging down a weight, the hook is connected with the upper end of the connecting rope 9, and the hanging down type weighing of the sample 4 can be realized.
Preferably, the lower end of the hollow tube 8 is polished to be flat and can be contacted with the top end of the sealing cover 11; the connecting rope 9 is a nylon rope, and does not contact the inner wall of the hollow pipe 8.
Preferably, the sealing cover 11 is detachably connected with the hollow tube 8; the hollow tube 8 is a circular hollow tube, the upper end of the sealing cover 11 is provided with a circular through hole which can be covered by the lower end of the hollow tube 8, and the connecting rope 9 is connected with the sample table 7 through the circular through hole.
Preferably, the volume of the constant temperature and humidity box 2 is 50 to 200L, and the temperature and humidity inside the box body are kept uniform in an air blowing mode; the control range of the internal temperature of the constant temperature and humidity box 2 is 0-60 ℃, and the temperature fluctuation is +/-0.5 ℃; the humidity control range is 20 to 99 percent, and the humidity fluctuation is +/-5 percent.
Preferably, a box body wall hole 10 in the top of the constant temperature and humidity box 2 is a round hole, and the diameter of the round hole is 5 to 40mm; the outer diameter of the hollow pipe 8 is 5 to 40mm; the diameter of the through hole at the top end of the sealing cover 11 is 2 to 8mm; the internal volume of the hole-equipped sealed bottle 3 is 0.5 to 2L.
Preferably, the balance 1 is provided with a windshield on top.
Fig. 1 is a first embodiment of a humidity control material performance detection device according to the present invention. The constant temperature and humidity box 2 maintains the internal temperature and humidity of the box body to be uniform in an air blowing mode, the internal temperature control range is 0 to 60 ℃, and the temperature fluctuation is +/-0.5 ℃; the humidity control range is 20 to 99 percent, and the humidity fluctuation is +/-5 percent. The volume of the box body is preferably 50 to 200L, and in the first embodiment, the volume of the box body is 120L.
The diameter of a box wall hole 10 formed in the top of the constant temperature and humidity box 2 is preferably 5 to 40mm, and the diameter of the circular box wall hole 10 in the first embodiment is 25mm; the diameter of the hollow pipe 8 is consistent with that of the box wall hole 10. In the first embodiment, a sealing cover 11 is arranged between the hole sealing bottle 3 and the hollow tube 8, the sealing cover 11 is provided with a through hole, the through hole is a round hole, the diameter of the through hole is 6mm and is smaller than that of the hollow tube 8, when the lifting platform 6 rises, the lower port of the hollow tube 8 covers the through hole on the sealing cover 11, the lower end of the sealing cover 11 covers the upper port of the hole sealing bottle 3, and an effective sealing test space is formed between the hole sealing bottle 3, the sealing cover 11, the hollow tube 8 and the balance 1. The sealing cover 11 can better ensure the sealing performance of the hole sealing bottle 3, and after the lifting platform 6 descends, the lower part of the sealing cover 11 can be separated from the upper end of the hole sealing bottle 3, so that the sample 4 on the sample platform 7 below the sealing cover 11 can be conveniently replaced.
The sealing cover 11 and the hollow pipe 8 can be detachably connected or fixedly connected; in the first embodiment, the sealing cap 11 is detachably connected to the hollow tube 8; along with the rising of the lifting platform 6, the upper part of the sealing cover 11 is tightly attached to the lower part of the hollow pipe 8, and the lower pipe orifice of the hollow pipe 8 covers the round through hole on the sealing cover 11; along with the sinking of the lifting platform 6, the sealing cover 11 is separated from the lower pipe orifice of the hollow pipe 8, thereby realizing a detachable connection mode. Compare in directly with sealed lid 11 and hollow tube 8 lower tube mouth fixed connection, mobilizable sealed lid 11 can be connected and sealed with utensil hole sealing bottle 3 upper end earlier in the test, can the simplified operation, the leakproofness of the interior test environment of reinforcing utensil hole sealing bottle 3.
In the first embodiment, the hollow tube 8 is a circular hollow tube made of organic glass and made of a light material, and the upper end port of the hollow tube is vertically connected to the top wall of the constant temperature and humidity chamber 2 and is communicated with the chamber wall hole 10 at the top.
The balance 1 in this embodiment has a precision of 0.0001g, has a down-hanging weighing function, and can automatically record weighing data in real time. As shown in fig. 1, the balance 1 is located at the top of the outer side of the constant temperature and humidity chamber 2, a hook is arranged at the lower end of the constant temperature and humidity chamber, the hook is connected with a connecting rope 9, the connecting rope 9 downwards penetrates through a hollow pipe 8 along a chamber wall hole 10, and a sample table 7 at the tail end of the connecting rope 9 can realize the function of hanging and weighing. In this embodiment, connect rope 9 and be the nylon rope material, it runs through hollow tube 8 perpendicularly, does not contact with hollow tube 8 inner wall and sealed lid 11, reduces the weighing accuracy who influences balance 1.
The upper portion of the balance 1 is provided with the wind cap, so that the influence on the precision of the balance 1 caused by external wind or accidental collision can be reduced, and the precision of weight weighing data is ensured.
When the lifting platform 6 rises, the sealing bottle 3 with the hole is driven to rise, the bottle mouth of the sealing bottle 3 with the hole is in sealing fit with the lower end of the sealing cover 11, and the upper end of the sealing cover 11 is in fit with the lower end of the hollow pipe 8; after the lower port of the hollow tube 8 covers the through hole at the upper end of the sealing cover 11, an effective sealing test space can be formed among the sealing bottle 3 with the hole, the sealing cover 11, the hollow tube 8 and the balance 1; the sample 4 is subjected to performance detection in the closed test space, so that the influence of an air blower on the weighing device can be avoided, and the accuracy and the effectiveness of data recorded by the balance 1 are improved.
The elevating platform 6 can adjust the height of the sealing bottle 3 with the hole, so that the upper end of the sealing cover 11 is attached to or separated from the lower port of the hollow pipe 8. The sample stage 7 is used for placing the sample 4 to be weighed, i.e., a humidity control material, and the material of the sample stage 7 is preferably a material having low water absorption rate, such as a PVC plate or a teflon plate in the first embodiment.
The humidity-controlling material performance detection device of the first embodiment is used for performing 24-hour moisture absorption and release test on an intelligent humidity-controlling brick under a high humidity condition and 24-hour moisture absorption and release test under a low humidity condition, and fig. 2 is a moisture absorption and release data diagram obtained through the test, and specifically includes the following steps:
firstly, selecting a saturated salt solution 5 as a test solution, and constructing different local air humidity at 25 ℃ by various saturated salt solutions, wherein the local air humidity is 93 percent of potassium nitrate RH, 85 percent of potassium chloride RH, 75 percent of sodium chloride RH, 53 percent of magnesium nitrate RH, 43 percent of potassium carbonate RH and 33 percent of magnesium chloride RH.
In the first embodiment, a saturated solution of potassium nitrate and magnesium chloride is used. Firstly, putting a potassium nitrate saturated solution into a sealed bottle 3 with an aperture; preferably, the volume of the potassium nitrate salt solution accounts for 5 to 30 percent of the volume of the sealed bottle, and the volume of the potassium nitrate salt solution accounts for 20 percent of the volume of the sealed bottle in the embodiment. The sealed bottle 3 with the hole filled with the saturated solution of potassium nitrate is placed on the lifting platform 6.
And step two, adjusting the temperature and humidity value of the constant temperature and humidity box 2: the temperature of the constant temperature and humidity chamber 2 is set to 25 ℃ and the humidity is set to RH 93%.
And thirdly, after the temperature and the humidity reach set values, the intelligent humidity regulating brick is placed on a sample table 7, a sealing cover 11 and the opening of the hole sealing bottle 3 are locked tightly, and a lifting table 6 rises until the upper surface of the sealing cover 11 is tightly attached to the lower end of the hollow tube 8. The lower end of the hollow tube 8 covers and seals the through hole at the upper end of the sealing cover 11, and an effective sealing test space is formed among the sealing bottle with hole 3, the sealing cover 11, the hollow tube 8 and the balance 1.
And fourthly, starting the test, opening a reading and recording software interface of the balance 1, setting the reading interval time to be 10 min, and recording the weight change of the intelligent humidity adjusting brick of the sample 4 in real time.
And fifthly, after the moisture absorption test under the high-humidity condition is finished, performing the moisture release test of the intelligent humidity-adjusting brick of the sample 4 under the low-humidity condition: and opening the constant temperature and humidity box 2, descending the lifting platform 6, separating the sealing cover 11 from the hole sealing bottle 3, withdrawing the sample platform 7 out of the hole sealing bottle 3, and taking out the hole sealing bottle 3 filled with the potassium nitrate saturated solution. The flask was replaced with a sealed flask 3 with a hole containing a saturated solution of magnesium chloride, the saturated solution of magnesium chloride occupying 20% of the volume of the flask, and the sealed flask 3 with a hole was placed on an elevating table 6.
Sixthly, adjusting the temperature and humidity value of the constant temperature and humidity box 2: the temperature of the constant temperature and humidity chamber 2 was set at 25 ℃ and the humidity thereof was set at RH 33%.
Seventhly, after the temperature and the humidity reach set values, locking the sealing cover 11 and the opening of the hole sealing bottle 3, and lifting the lifting table 6 until the upper surface of the sealing cover 11 is tightly attached to the lower end of the hollow pipe 8. The lower end of the hollow tube 8 covers and seals the through hole at the upper end of the sealing cover 11, and an effective sealing test space is formed among the sealing bottle with hole 3, the sealing cover 11, the hollow tube 8 and the balance 1.
And eighthly, starting the test, opening a reading and recording software interface of the balance 1, setting the reading interval time to be 10 min, and recording the weight change of the sample 4 in real time.
During the test, the read interval time may be determined from the total time recorded. When the 24h moisture absorption and release capacity test of the humidity control material is carried out, the reading interval is set to be 10-20 min, and the change trend of data can be clearly and effectively reflected.
The data obtained are shown in FIG. 2, where the data points are dense, and it can be seen that the adsorption/desorption rate of the humidity control brick is high at the initial stage, and the rate decreases with the passage of time. The data points are real-time measurement of the sample 4 in a corresponding humidity environment, and the sample 4 does not need to be taken out for weighing, so that the accuracy of the test can be ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A humidifying material performance detection device is characterized in that: the device comprises a constant temperature and humidity box (2), wherein a lifting table (6) is arranged in the constant temperature and humidity box (2), and a sealing bottle (3) with a hole is arranged at the upper part of the lifting table (6); the top of the outer side of the constant temperature and humidity box (2) is provided with a balance (1) which can be used for weighing and automatically recording a weight value in real time, and the lower end of the balance (1) is connected with a connecting rope (9); the connecting rope (9) downwards sequentially penetrates through the upper wall of the constant temperature and humidity box (2), a hollow pipe (8) and a sealing cover (11) which are vertically connected to the inner wall of the upper part of the constant temperature and humidity box (2), and the lower end of the connecting rope is connected with a sample table (7) capable of placing a sample (4); the sealing cover (11) is positioned between the hollow tube (8) and the sample table (7), and the lower end of the sealing cover is detachably connected with the sealing bottle (3) with the hole; the sample table (7) can be placed in the inner cavity of the hole-sealed bottle (3) after the lifting table (6) is lifted; after the sample table (7) is placed into the inner cavity of the hole sealing bottle (3), an effective sealing test space can be formed among the hole sealing bottle (3), the sealing cover (11), the hollow pipe (8) and the balance (1), at the moment, the sample (4), the sample table (7) and the connecting rope (9) are all located in the sealing test space, and the influence of blast air in the constant temperature and humidity box on sample weighing can be avoided.
2. The humidity control material property detection device according to claim 1, wherein: the balance (1) is provided with a hook for hanging down and weighing, the hook is connected with the upper end of the connecting rope (9), and the hanging down type weighing of the sample (4) can be realized.
3. The humidity control material property detection device according to claim 2, wherein: the lower end of the hollow pipe (8) is polished to be flat and can be contacted with the top end of the sealing cover (11); the connecting rope (9) is a nylon rope and is not contacted with the inner wall of the hollow pipe (8).
4. The humidity control material property detection device according to claim 3, wherein: the sealing cover (11) is detachably connected with the hollow pipe (8); the hollow tube (8) is a circular hollow tube, the upper end of the sealing cover (11) is provided with a circular through hole which can be covered by the lower end of the hollow tube (8), and the connecting rope (9) is connected with the sample table (7) through the circular through hole.
5. The humidity control material property detection device according to claim 4, wherein: the volume of the constant temperature and humidity box (2) is 50 to 200L, and the temperature and the humidity in the box body are kept uniform in an air blowing mode; the control range of the internal temperature of the constant temperature and humidity box (2) is 0 to 60 ℃, and the temperature fluctuation is +/-0.5 ℃; the humidity control range is 20 to 99 percent, and the humidity fluctuation is +/-5 percent.
6. The humidity control material property detection device according to claim 5, wherein: a box wall hole (10) at the top of the constant temperature and humidity box (2) is a round hole, and the diameter of the round hole is 5 to 40mm; the outer diameter of the hollow pipe (8) is 5-40mm; the diameter of the through hole at the top end of the sealing cover (11) is 2 to 8mm; the internal volume of the sealed bottle (3) with the hole is 0.5 to 2L.
7. The humidity-controlling material property detecting device according to any one of claims 1 to 6, wherein a windshield is provided on an upper portion of the balance (1).
8. A method for detecting the performance of a humidity-adjusting material is characterized by comprising the following steps: the humidity controlling material property detecting device as defined in any one of claims 1 to 6, comprising the steps of:
firstly, selecting a test solution according to a required humidity value and placing the test solution into the sealed bottle (3) with the hole;
secondly, placing the sealing bottle (3) with the hole on a lifting platform (6) in a constant temperature and humidity box (2);
thirdly, adjusting the temperature and humidity value of the constant temperature and humidity box (2);
fourthly, after the temperature and humidity value reaches a set value, placing the sample (4) on a sample table (7) and suspending the sample on the upper part of the inner cavity of the sealed bottle (3) with the hole; the lifting platform (6) rises, the upper surface of the sealing cover (11) is sealed with the lower end of the hollow pipe (8), the lower end of the sealing cover (11) is sealed with the upper end bottle mouth of the sealing bottle with hole (3), and an effective closed test space is formed among the sealing bottle with hole (3), the sealing cover (11), the hollow pipe (8) and the balance (1);
fifthly, the balance (1) records the weight change of the sample (4).
9. The method for detecting the performance of a humidity controlling material according to claim 8, wherein: the test solution is a saturated salt solution (5).
10. The method for detecting the performance of the humidity controlling material according to claim 9, wherein: and step five, recording the weight change of the sample (4) in real time for 24 hours by using a balance (1) capable of recording the weight change of the sample in real time, wherein the reading interval of the weight data is set to be 10 to 20min.
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| JP2019074418A (en) * | 2017-10-17 | 2019-05-16 | 埼玉県 | Water vapor transmission level and mass change measurement device, and measurement method of the same |
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