CN104132883B - A kind of containment housing entirety rate of perviousness method of testing - Google Patents
A kind of containment housing entirety rate of perviousness method of testing Download PDFInfo
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- CN104132883B CN104132883B CN201410403450.5A CN201410403450A CN104132883B CN 104132883 B CN104132883 B CN 104132883B CN 201410403450 A CN201410403450 A CN 201410403450A CN 104132883 B CN104132883 B CN 104132883B
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- containment housing
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Abstract
The invention belongs to measure technical field of measurement and test.Using sensor moisture measurement technology, humidity collection point is set in casing geometric center to be measured, is placed under box house drying condition in environment to be measured, the test and engineering evaluation to casing entirety rate of perviousness are realized according to a conventional method.Containment housing entirety rate of perviousness method of testing of the present invention, humidity sensor and temperature sensor, and seal case are installed in casing geometric center；Absolute humidity incremental difference is not more than ± 0.1g/m in adjacent same time interval internal box3As test starting point；Absolute humidity incremental difference is not more than ± 0.1g/m in the internal box of continuous n (n is the natural number not less than 3) same time interval3, relative humidity differential, not less than 30%RH as test terminal, calculates casing entirety rate of perviousness inside and outside casing.The method is simple to operate, and highly versatile, testing efficiency is high, is that all kinds of case/cabins etc. provide Engineering Overall evaluation method, it is adaptable to containment housing entirety rate of perviousness test and evaluation.
Description
Technical field
The invention belongs to measure technical field of measurement and test, it is related to moisture measurement technology, the more particularly to moisture-inhibiting of containment housing entirety
Rate method of testing.
Background technology
Rate of perviousness is an important parameter for characterizing packaging material performance, and the method for testing of rate of perviousness is a large amount of literary
Report, including each class standard, patent and scientific paper are offered, but both for material (including film, thin slice, sheet material, sheet material etc.)
Rate of perviousness test, test sample is required to and by standard sample preparation, for the moisture-inhibiting energy of the container with certain geometry
The measuring technology of power has no report.
In practical engineering application, for the overall structure (such as closed box) every wet requirement, usually according to warp
Main body and auxiliary material that selection meets rate of perviousness technical requirements are tested, is realized by engineering design and construction quality control, as
The overall rate of perviousness of engineering there is no the clear and definite method to carry out overall merit at present.
The content of the invention
Propose a kind of simple and easy to do lossless containment housing entirety rate of perviousness method of testing.
It is an object of the invention to provide a kind of method of testing of containment housing entirety rate of perviousness, realize in construction quality
The measurement of water vapour permeability and engineering evaluation method.
The object of the present invention is achieved like this, using sensor moisture measurement technology, is set in casing geometric center to be measured
Humidity collection point is put, reliable encapsulation process is carried out to sensor socket with effective ways, under the conditions of box house is dry, will
Casing is placed in environment to be measured, and routinely humidity measuring method realizes the test and engineering evaluation to casing entirety rate of perviousness.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, concrete operations requirement is：
1) sensor is installed and sealing：Humidity sensor and temperature sensor, and seal box are installed in casing geometric center
Body；
2) test condition determines；Test parameters, including test temperature and ambient humidity are set according to casing technical requirements；
3) casing pretreatment；To box house dehumidify, to test temperature under the conditions of box house relative humidity and proving ring
Border relative humidity differential is not less than 50%RH；
4) casing pre-equilibration：The containment housing for reaching test request will be pre-processed and be put into test environment rapidly, in test wrapper
Balanced under the conditions of border, absolute humidity in record casing, absolute humidity increases in secondary/2h~12h, extremely adjacent same time interval internal box
Amount difference is not more than ± 0.1g/m3；
5) test and evaluation：It is test starting point with the humidity in casing at the end of pre-equilibration, tests 24h~120h, record
Absolute humidity in casing, secondary/2h~12h；In the internal box of continuous n (n is the natural number not less than 3) same time interval definitely
Humidity delta difference is not more than ± 0.1g/m3, when relative humidity differential is not less than 30%RH inside and outside casing, as test terminal, by formula
(1) casing entirety rate of perviousness is calculated；
In formula：
Wt--- the rate of perviousness of containment housing, unit is g/ (m2·24h)；
dv1--- absolute humidity in containment housing during test starting, unit is g/m3；
dv2--- absolute humidity in containment housing at the end of test, unit is g/m3；
The volume of V --- containment housing, unit is m3；
The surface area of S --- containment housing, unit is m2；
T --- testing time, unit is h.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, the sensor is the sensor of measurable absolute humidity
Part.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, it is characterised in that：The sensing of the measurable absolute humidity
Device is Temperature Humidity Sensor or humiture recorder.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, it is characterised in that：The Temperature Humidity Sensor has wireless
Emission function.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, it is characterised in that：The sensor is installed and sealed
Journey is to install humidity sensor and temperature sensor in casing geometric center, draws data call wire and seal case；Sensor
Sealing means are that polytetrafluoroethylraw raw material band winding cable tamps hole, and interface is sealed with melting sealed wax.
Containment housing entirety rate of perviousness method of testing of the present invention includes that sensor installs true with sealing, test condition
Fixed, casing pretreatment, casing pre-equilibration and test and evaluation process, it is characterised in that：The casing pre-processes dehumanization method
Drier absorption method or dry gas sweeping method.
Containment housing entirety rate of perviousness method of testing of the present invention, using conventional environmental test and measuring apparatus, nothing
Special test instrument need to be used, simple to operate, experimentation cost is low, and highly versatile, testing efficiency is high, be all kinds of have every wet requirement
Packing case, storing and transporting box, tank long, closed cabin etc. provide Engineering Overall evaluation method, it is adaptable to containment housing entirety rate of perviousness
Test and evaluation.
Specific embodiment
Containment housing rate of perviousness method of testing of the present invention is described in further detail with example below, but is not made
It is to be related to the limitation of technical scheme to this patent.
Embodiment one
The outside mechanical dimensions of tested containment housing are 2.50m × 0.45m × 0.45m rectangular box bodies, wall thickness 5mm, main body
Plate face is nonmetallic composite, and there are the structural members such as complex support member, guide rail, sliding block inside.Tank surface accumulates S
4.905m2, volume V is 0.506m3。
The sensor for fixing the THT-2 types precision temp.-humidity measuring apparatus calibrated in casing geometric center position is visited
Head, measuring instrument display table, through casing air equalizer opening, is positioned over outside containment housing by 3m cables long, uses polytetrafluoro
At ethene raw material band winding cable perforation, and hole is tamped, threading hole and surrounding is sealed with melting sealed wax in interface,
Seal case.
Test condition is：Temperature (35 ± 2) DEG C, relative humidity (95 ± 3) %.
Casing is pre-processed：Temp.-humidity measuring apparatus record time interval is set as 8h.Hole is detected from casing drive end bearing bracket, with height
Pure nitrogen gas blow down moisture in casing with the flow of 10L/min, and gas is discharged from box back lid detection hole.By temperature and humidity measurement
Humidity change in instrument inspection box body, when relative humidity is less than 10% in measuring instrument show case, then purges 20min, rapid closure
Inlet, outlet interface, makes casing generally in air-tight state.
Casing pre-equilibration and test：Pretreated containment housing is put into rapidly and has reached temperature (35 ± 2) DEG C, relative
In the walk-in type environmental test chamber of humidity (95 ± 3) % poised states, containment housing is propped with metallic support, surrounding distance test (DT)
Bulkhead at least 40cm, opens humidity measuring apparatus, and display table is placed in outside test environment, absolute humidity, secondary/8h in record casing.
Balance is as shown in table 1 with test phase test data.
Sequence number 1~5 is the pre-equilibration stage, and the pre-equilibration stage can make to be adsorbed in water release in casing and reach equilibrium state.Sequence
Numbers 3~5 twice in same time interval, and absolute humidity increment is respectively 0.19g/m in casing3And 0.20g/m3, incremental difference is
0.01g/m3, pre-equilibration terminates.
Sequence number 5~10 is containment housing rate of perviousness test phase, test starting point dv1It is 15.08g/m3, test terminal dv2For
16.07g/m3, absolute humidity values incremental difference is 0.03g/m to the maximum in casing3, testing time t is 40h.
Bring box body parameter and above-mentioned test data into formula (1) and be calculated casing rate of perviousness：
The containment housing process of the test test data of table 1
The test result is coincide substantially with the theoretical values that the calculating of material rate of perviousness is pressed at the beginning of designing.
Embodiment two
Tested containment housing to embodiment one is test object.
Fixing a BW17-174H type humitures recorder calibrated in casing geometric center position (has data certainly
Dynamic writing function), it is 8h to set record time interval.Uniformly placed in casing it is dried, with the packed change of breathable cloth
4 bags of color silica gel, common 5kg, seal case.
Test condition is：Temperature (35 ± 2) DEG C, relative humidity (95 ± 3) %.
Casing is pre-processed：Detect that humidity changes in hole measurement casing from casing drive end bearing bracket with another temp.-humidity measuring apparatus,
It is in dry environments, rapid to take out discoloration silica gel, seal case when relative humidity is less than 20% in the measuring instrument show case.
Casing pre-equilibration and test：Pretreated containment housing is put into rapidly and has reached temperature (35 ± 2) DEG C, relative
In the walk-in type environmental test chamber of humidity (95 ± 3) % poised states, containment housing is propped with metallic support, surrounding distance test (DT)
Bulkhead at least 40cm.72h is carried out altogether to experiment end since casing pre-equilibration, after test terminates, takes out humiture in casing
Recorder, derived record data are judged and calculated by method in embodiment one.Initial absolute humidity measured value dv1It is 16.48g/
m3, terminate absolute humidity measured value dv2It is 17.26g/m3, testing time t is 32h.
Casing rate of perviousness is calculated by formula 1.
The test result matches with rate of perviousness test and evaluation in embodiment one.
Claims (7)
1. a kind of containment housing entirety rate of perviousness method of testing, including sensor installs pre- with sealing, test condition determination, casing
Treatment, casing pre-equilibration and test and evaluation process, concrete operations requirement is：
1) sensor is installed and sealing：Humidity sensor and temperature sensor, and seal case are installed in casing geometric center；
2) test condition determines：Test parameters, including test temperature and ambient humidity are set according to casing technical requirements；
3) casing pretreatment：To box house dehumidify, to test temperature under the conditions of box house relative humidity and experimental enviroment phase
50%RH is not less than to psychrometric difference；
4) casing pre-equilibration：The containment housing for reaching test request will be pre-processed and be put into test environment rapidly, in test environment bar
Balanced under part, absolute humidity in record casing, absolute humidity incremental difference in secondary/2h~12h, extremely adjacent same time interval internal box
No more than ± 0.1g/m3；
5) test and evaluation：It is test starting point with the humidity in casing at the end of pre-equilibration, tests 24h~120h, records casing
Interior absolute humidity, secondary/2h~12h；Absolute humidity incremental difference is not more than ± 0.1g/ in the internal box of continuous n same time interval
m3, when relative humidity differential is not less than 30%RH inside and outside casing, used as test terminal, n is the natural number not less than 3, based on formula (1)
Calculate casing entirety rate of perviousness；
In formula：
Wt--- the rate of perviousness of containment housing, unit is g/ (m2·24h)；
dv1--- absolute humidity in containment housing during test starting, unit is g/m3；
dv2--- absolute humidity in containment housing at the end of test, unit is g/m3；
The volume of V --- containment housing, unit is m3；
The surface area of S --- containment housing, unit is m2；
T --- testing time, unit is h.
2. containment housing according to claim 1 entirety rate of perviousness method of testing, it is characterised in that：The humidity sensor
It is the senser element of measurable absolute humidity.
3. containment housing according to claim 1 entirety rate of perviousness method of testing, it is characterised in that：The sensor is can
Measure the Temperature Humidity Sensor or humiture recorder of absolute humidity.
4. containment housing according to claim 3 entirety rate of perviousness method of testing, it is characterised in that：The temperature and humidity sensing
Utensil has wireless transmitting function.
5. the overall rate of perviousness method of testing of containment housing according to claim 1,2 or 3, it is characterised in that：The sensing
It is, in casing geometric center install sensor, to draw data call wire and seal case that device is installed with seal process；Sensor is close
Envelope mode is that polytetrafluoroethylraw raw material band winding cable tamps hole, and interface is sealed with melting sealed wax.
6. the overall rate of perviousness method of testing of containment housing according to claim 1,2 or 3, it is characterised in that：The casing
Pretreatment dehumanization method is drier absorption method or dry gas sweeping method.
7. containment housing according to claim 5 entirety rate of perviousness method of testing, it is characterised in that：The casing pretreatment
Dehumanization method is drier absorption method or dry gas sweeping method.
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| CN201410403450.5A CN104132883B (en) | 2014-06-11 | 2014-08-15 | A kind of containment housing entirety rate of perviousness method of testing |
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| CN201410403450.5A CN104132883B (en) | 2014-06-11 | 2014-08-15 | A kind of containment housing entirety rate of perviousness method of testing |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106776083B (en) * | 2016-12-14 | 2020-06-23 | Oppo广东移动通信有限公司 | Test control method and device and terminal equipment |
| CN107907462B (en) * | 2017-11-06 | 2020-07-03 | 山东非金属材料研究所 | Method for testing moisture permeability of container |
| CN109030330A (en) * | 2018-08-17 | 2018-12-18 | 中国建筑科学研究院有限公司 | Device and method for detecting durability of enclosure material |
| CN110057736B (en) * | 2019-04-08 | 2021-08-03 | Tcl华星光电技术有限公司 | Method and equipment for detecting moisture permeability of organic film |
| CN112082706B (en) * | 2020-08-27 | 2021-06-22 | 西安交通大学 | Device and method for detecting wet air exchange rate of door seal part of small refrigeration space |
| CN114659712A (en) * | 2021-11-30 | 2022-06-24 | 中材科技股份有限公司 | Method and device for testing sealing performance of membrane material |
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| JPS6024419B2 (en) * | 1979-11-30 | 1985-06-12 | 株式会社島津製作所 | Moisture permeability measuring device for polymer packaging materials |
| JP3645529B2 (en) * | 2002-02-18 | 2005-05-11 | 株式会社九州山光社 | Water container for testing moisture permeability of membrane |
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| CN103196810A (en) * | 2013-04-09 | 2013-07-10 | 海宁长宇镀铝材料有限公司 | Device for detecting moisture permeability of aluminum-plated polyethylenetherephtalate (PET) thin film |
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