CN104132883A - Testing method for whole moisture penetrability of closed box body - Google Patents

Testing method for whole moisture penetrability of closed box body Download PDF

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Publication number
CN104132883A
CN104132883A CN201410403450.5A CN201410403450A CN104132883A CN 104132883 A CN104132883 A CN 104132883A CN 201410403450 A CN201410403450 A CN 201410403450A CN 104132883 A CN104132883 A CN 104132883A
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casing
test
humidity
box body
testing
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CN201410403450.5A
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CN104132883B (en
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崔剑
张学范
辛宗伟
荀其宁
张雨
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No 53 Institute of China North Industries Group Corp
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No 53 Institute of China North Industries Group Corp
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Abstract

The invention belongs to the technical field of measurement and testing. A sensor humidity measurement technology is adopted and a humidity collection point is arranged at the geometric center of a to-be-detected box body; the box body is arranged in a to-be-detected environment under the condition that the interior of the box body is dry; testing and engineering evaluation on the whole moisture penetrability of the box body are realized according to a conventional method. The invention relates to a testing method for the whole moisture penetrability of a closed box body; a humidity sensor and a temperature sensor are mounted at the geometric center of the box body and the box body is sealed; when an absolute humidity increment difference is no more than +/-0.1g/m<3> in the box body at adjacent same time intervals, the test is started; when the absolute humidity increment difference is no more than +/-0.1g/m<3> in the box body, and a relative humidity difference RH between the inside and the outside of the box body is no more than 30% at adjacent same time intervals for continuous n times (n is a natural number being no less than 3), testing is ended, so that the whole moisture penetrability of the closed box body is calculated. The method has the advantages of simplicity in operation, strong universality and high testing efficiency, provides a universality overall evaluation method for various boxes/cabins and the like, and is suitable for testing and evaluating the whole moisture penetrability of the closed box body.

Description

A kind of airtight casing entirety rate of perviousness method of testing
Technical field
The invention belongs to measurement technical field of measurement and test, relate to moisture measurement technology, particularly airtight casing entirety rate of perviousness method of testing.
Background technology
Rate of perviousness is an important parameter that characterizes wrappage performance, the existing lot of documents report of method of testing of rate of perviousness, comprise each class standard, patent and scientific paper, but all test for material (comprising film, thin slice, sheet material, sheet material etc.) rate of perviousness, all need test sample and by standard sample preparation, have no report for the measuring technology of moisture-inhibiting ability of the container with certain geometry.
In practical engineering application, for having every the wet one-piece construction requiring (as closed box etc.), generally main body and the auxiliary material of rule of thumb selecting to meet rate of perviousness technical requirement, realize by engineering design and construction quality control, there is no at present clear and definite method as for the overall rate of perviousness of engineering and carry out comprehensive evaluation.
Summary of the invention
A kind of simple and easy to do harmless airtight casing entirety rate of perviousness method of testing is proposed.
The method of testing that the object of the present invention is to provide a kind of airtight casing entirety rate of perviousness, realizes measurement and engineering judgment method to water vapour permeability in construction quality.
The object of the present invention is achieved like this, adopt sensor moisture measurement technology, in casing geometric center to be measured, humidity collection point is set, with effective ways, sensor socket is carried out to positiver sealing processing, under the dry condition of box house, casing is placed in to environment to be measured, and humidity measuring method is realized test and the engineering judgment to casing entirety rate of perviousness routinely.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are determined, casing pre-service, casing pre-equilibration and test and evaluation process, and concrete operations requirement is:
1) installation of sensors and sealing: in casing geometric center, humidity sensor and temperature sensor are installed, and seal case;
2) test condition is determined; Set test parameters according to casing technical requirement, comprise probe temperature and ambient humidity;
3) casing pre-service; To box house dehumidifying, to probe temperature condition lower box internal relative humidity and the poor 50%RH that is not less than of experimental enviroment relative humidity;
4) casing pre-equilibration: the airtight casing that pre-service is reached to test request is put into rapidly test environment, balance under test environment conditions, record absolute humidity in casing, inferior/2h～12h, be extremely not more than ± 0.1g/m of absolute humidity incremental difference in adjacent same time interval internal box 3;
5) test and evaluation: the humidity while end taking pre-equilibration in casing is test starting point, and test 24h～120h, records absolute humidity in casing, inferior/2h～12h; Be not more than ± 0.1g/m of absolute humidity incremental difference in n (n is not less than 3 natural number) same time interval internal box continuously 3, inside and outside relative humidity is poor while being not less than 30%RH for casing, as test terminal, calculates the overall rate of perviousness of casing by formula (1);
W t = ( d v 2 - d v 1 ) &CenterDot; V &CenterDot; 24 S &CenterDot; t - - - ( 1 )
In formula:
W t---the rate of perviousness of airtight casing, unit is g/ (m 224h);
D v1---test when initial absolute humidity in airtight casing, unit is g/m 3;
D v2---absolute humidity in airtight casing when test finishes, unit is g/m 3;
The volume of V---airtight casing, unit is m 3;
The surface area of S---airtight casing, unit is m 2;
T---the test duration, unit is h.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, and described sensor is the senser element that can measure absolute humidity.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: the described senser element of measuring absolute humidity is Temperature Humidity Sensor or humiture registering instrument.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described Temperature Humidity Sensor has wireless transmitting function.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described installation of sensors in casing geometric center, humidity sensor and temperature sensor being installed, is drawn data call wire seal case with the process that sealed; Sensor sealing means is that polytetrafluoroethylraw raw material band winding cable tamps hole, and interface seals with melting sealed wax.
The airtight casing entirety rate of perviousness method of testing the present invention relates to comprises that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described casing pre-service dehumanization method is drying agent absorption method or dry gas sweeping method.
The airtight casing entirety rate of perviousness method of testing the present invention relates to, adopt conventional environmental test and measuring equipment, without using Special test instrument, simple to operate, experimentation cost is low, highly versatile, and testing efficiency is high, for all kinds of have every the wet packing case requiring, storing and transporting box, long tank, closed cabin etc. Engineering Overall evaluation method is provided, be applicable to the overall rate of perviousness test and evaluation of airtight casing.
Specific embodiments
With example, the airtight casing rate of perviousness method of testing the present invention relates to is described in further detail below, but not as the restriction that this patent is related to technical scheme.
Embodiment mono-
The exterior mechanical of tested airtight casing is of a size of 2.50m × 0.45m × 0.45m rectangular box body, wall thickness 5mm, and main board face is nonmetallic composite, there are the structural members such as comparatively complicated support member, guide rail, slide block inside.The long-pending S of tank surface is 4.905m 2, volume V is 0.506m 3.
Fix the sensor probe of an accurate temp .-humidity measuring apparatus of the THT-2 type of calibrating in casing geometric center position, this measuring instrument indicator gauge is by the long cable of 3m, through casing air equalizer opening, be positioned over closed box external, with perforation place of polytetrafluoroethylraw raw material band winding cable, and tamp hole, at melting sealed wax sealing threading hole and surrounding for interface, seal case.
Test condition is: temperature (35 ± 2) DEG C, relative humidity (95 ± 3) %.
Casing pre-service: temp .-humidity measuring apparatus interval writing time is set as to 8h.Detect hole from casing front end end cover, with high pure nitrogen, with moisture in the flow blowing casing of 10L/min, gas detects hole from box back lid and discharges.Observe in casing humidity by temp .-humidity measuring apparatus and change, when relative humidity in measuring instrument show case is lower than 10% time, then purge 20min, shutoff inlet, outlet interface, makes casing entirety in air-tight state rapidly.
Casing pre-equilibration and test: pretreated airtight casing is put into rapidly to the walk-in type environmental test chamber that has reached temperature (35 ± 2) DEG C, relative humidity (95 ± 3) % equilibrium state, airtight casing is propped with metal support, at least 40cm of surrounding distance test (DT) bulkhead, open humidity measuring apparatus, indicator gauge is placed in outside test environment, record absolute humidity in casing, inferior/8h.Balance and test phase test data are as shown in table 1.
Sequence number 1～5 is the pre-equilibration stage, and the pre-equilibration stage can make to be adsorbed in moisture release in casing and reach equilibrium state.In same time interval, twice of sequence number 3～5, in casing, absolute humidity increment is respectively 0.19g/m 3and 0.20g/m 3, incremental difference is 0.01g/m 3, pre-equilibration finishes.
Sequence number 5～10 is airtight casing rate of perviousness test phase, test starting point d v1for 15.08g/m 3, test terminal d v2for 16.07g/m 3, in casing, absolute humidity value incremental difference is 0.03g/m to the maximum 3, test duration t is 40h.
Bring box body parameter and above-mentioned test data into formula (1) and calculate casing rate of perviousness:
The airtight casing process of the test of table 1 test data
W t = ( d v 2 - d v 1 ) &CenterDot; V &CenterDot; 24 S &CenterDot; t = ( 16.07 - 15.08 ) &times; 0.506 &times; 24 4.905 &times; 40 = 0.061 g / ( m 2 &CenterDot; 24 h )
The theoretical numerical value of pressing the calculating of material rate of perviousness at the beginning of this test result and design is substantially identical.
Embodiment bis-
Be tested object to the tested airtight casing of embodiment mono-.
Fix a BW17-174H type humiture registering instrument (having data automatic recording function) of calibrating in casing geometric center position, the setting recording time interval is 8h.In casing, evenly place dry 4 bags of the packed discolour silica gels of breathable cloth of processing, use, 5kg altogether, seal case.
Test condition is: temperature (35 ± 2) DEG C, relative humidity (95 ± 3) %.
Casing pre-service: detect humidity in hole measurement casing with another temp .-humidity measuring apparatus from casing front end end cover and change, when relative humidity in this measuring instrument show case is lower than 20% time, under dry environment, take out rapidly discolour silica gel, seal case.
Casing pre-equilibration and test: pretreated airtight casing is put into rapidly to the walk-in type environmental test chamber that has reached temperature (35 ± 2) DEG C, relative humidity (95 ± 3) % equilibrium state, airtight casing is propped with metal support, at least 40cm of surrounding distance test (DT) bulkhead.Start to carry out altogether 72h to experiment end from casing pre-equilibration, after test finishes, take out humiture registering instrument in casing, derived record data, by method judgement and calculating in embodiment mono-.Initial absolute humidity measured value d v1for 16.48g/m 3, finish absolute humidity measured value d v2for 17.26g/m 3, test duration t is 32h.
Calculate casing rate of perviousness by formula 1.
W t = ( d v 2 - d v 1 ) &CenterDot; V &CenterDot; 24 S &CenterDot; t = ( 17.26 - 16.48 ) &times; 0.506 &times; 24 4.905 &times; 32 = 0.060 g / ( m 2 &CenterDot; 24 h )
In this test result and embodiment mono-, rate of perviousness Measurement and Computation numerical value matches.

Claims (6)

  1. Airtight casing entirety rate of perviousness method of testing comprise that installation of sensors and sealing, test condition are determined, casing pre-service, casing pre-equilibration and a test and evaluation process, concrete operations requirement is:
    1) installation of sensors and sealing: in casing geometric center, humidity sensor and temperature sensor are installed, and seal case;
    2) test condition is determined; Set test parameters according to casing technical requirement, comprise probe temperature and ambient humidity;
    3) casing pre-service; To box house dehumidifying, to probe temperature condition lower box internal relative humidity and the poor 50%RH that is not less than of experimental enviroment relative humidity;
    4) casing pre-equilibration: the airtight casing that pre-service is reached to test request is put into rapidly test environment, balance under test environment conditions, record absolute humidity in casing, inferior/2h～12h, be extremely not more than ± 0.1g/m of absolute humidity incremental difference in adjacent same time interval internal box 3;
    5) test and evaluation: the humidity while end taking pre-equilibration in casing is test starting point, and test 24h～120h, records absolute humidity in casing, inferior/2h～12h; Be not more than ± 0.1g/m of absolute humidity incremental difference in n (n is not less than 3 natural number) same time interval internal box continuously 3, inside and outside relative humidity is poor while being not less than 30%RH for casing, as test terminal, calculates the overall rate of perviousness of casing by formula (1);
    W t = ( d v 2 - d v 1 ) &CenterDot; V &CenterDot; 24 S &CenterDot; t - - - ( 1 )
    In formula:
    W t---the rate of perviousness of airtight casing, unit is g/ (m 224h);
    D v1---test when initial absolute humidity in airtight casing, unit is g/m 3;
    D v2---absolute humidity in airtight casing when test finishes, unit is g/m 3;
    The volume of V---airtight casing, unit is m 3;
    The surface area of S---airtight casing, unit is m 2;
    T---the test duration, unit is h.
  2. Airtight casing entirety rate of perviousness method of testing according to claim 1 comprise that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, described sensor is the senser element that can measure absolute humidity.
  3. Airtight casing entirety rate of perviousness method of testing according to claim 2 comprise that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: the described senser element of measuring absolute humidity is Temperature Humidity Sensor or humiture registering instrument.
  4. According to the airtight casing entirety rate of perviousness method of testing described in claim 2 or 3 comprise that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described Temperature Humidity Sensor has wireless transmitting function.
  5. According to the airtight casing entirety rate of perviousness method of testing described in claim 1,2 or 3 comprise that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described installation of sensors in casing geometric center, humidity sensor and temperature sensor being installed, is drawn data call wire seal case with the process that sealed; Sensor sealing means is that polytetrafluoroethylraw raw material band winding cable tamps hole, and interface seals with melting sealed wax.
  6. According to the airtight casing entirety rate of perviousness method of testing described in claim 1,2,3 or 5 comprise that installation of sensors and sealing, test condition are definite, casing pre-service, casing pre-equilibration and test and evaluation process, it is characterized in that: described casing pre-service dehumanization method is drying agent absorption method or dry gas sweeping method.
CN201410403450.5A 2014-06-11 2014-08-15 A kind of containment housing entirety rate of perviousness method of testing Active CN104132883B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106776083A (en) * 2016-12-14 2017-05-31 广东欧珀移动通信有限公司 test control method, device and terminal device
CN107907462A (en) * 2017-11-06 2018-04-13 山东非金属材料研究所 A kind of container rate of perviousness test method
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
CN110057736A (en) * 2019-04-08 2019-07-26 深圳市华星光电技术有限公司 The detection method and detection device of the moisture permeability of organic film
CN112082706A (en) * 2020-08-27 2020-12-15 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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679236A (en) * 1979-11-30 1981-06-29 Shimadzu Corp Measuring apparatus for moisture permeability of high-molecular packaging material
JP2002310876A (en) * 2002-02-18 2002-10-23 Kunitaka Mizobe Water vessel for moisture permeation characteristic inspection of film
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679236A (en) * 1979-11-30 1981-06-29 Shimadzu Corp Measuring apparatus for moisture permeability of high-molecular packaging material
JP2002310876A (en) * 2002-02-18 2002-10-23 Kunitaka Mizobe Water vessel for moisture permeation characteristic inspection of film
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

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
国家质量监督检验检疫总局: "《GB/T 6981-2003 硬包装容器透湿度试验方法》", 1 January 2003 *
李金龙 等: "复合材料发射器透湿率试验研究", 《弹箭与制导学报》 *
杨万均 等: "基于传感技术的密封包装容器透湿度测试方法研究", 《包装工程》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106776083A (en) * 2016-12-14 2017-05-31 广东欧珀移动通信有限公司 test control method, device and terminal device
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
CN107907462A (en) * 2017-11-06 2018-04-13 山东非金属材料研究所 A kind of container rate of perviousness test method
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
CN110057736A (en) * 2019-04-08 2019-07-26 深圳市华星光电技术有限公司 The detection method and detection device of the moisture permeability of organic film
CN112082706A (en) * 2020-08-27 2020-12-15 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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