1、BRITISH STANDARD BS EN ISO 15106-1:2005 Plastics Film and sheeting Determination of water vapour transmission rate Part 1: Humidity detection sensor method The European Standard EN ISO 15106-1:2005 has the status of a British Standard ICS 83.140.10 BS EN ISO 15106-1:2005 This British Standard was pu
2、blished under the authority of the Standards Policy and Strategy Committee on 29 March 2005 BSI 29 March 2005 ISBN 0 580 45630 7 National foreword This British Standard is the official English language version of EN ISO 15106-1:2005. It is identical with ISO 15106-1:2003. The UK participation in its
3、 preparation was entrusted to Technical Committee PRI/75, Plastics and rubber film and sheets, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or E
4、uropean publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to includ
5、e all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiri
6、es on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page
7、, the ISO title page, pages ii to iv, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO151061 February2005 ICS8
8、3.140.10 Englishversion PlasticsFilmandsheetingDeterminationofwatervapour transmissionratePart1:Humiditydetectionsensormethod (ISO151061:2003) PlastiquesFilmetfeuilleDterminationducoefficientde transmissiondevapeurdeauPartie1:Mthodeutilisant undtecteurdhumidit(ISO151061:2003) KunststoffeFolienundFlc
9、hengebildeBestimmungder WasserdampfdurchlssigkeitTeil1:Verfahrenmit Feuchtigkeitssensor(ISO151061:2003) ThisEuropeanStandardwasapprovedbyCENon3February2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalst
10、andardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertherespon
11、sibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malt
12、a,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved
13、worldwideforCENnationalMembers. Ref.No.ENISO151061:2005:E Foreword The text of ISO 15106-1:2003 has been prepared by Technical Committee ISO/TC 61 “Plastics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 15106-1:2005 by Technical Committee CEN/TC 249 “
14、Plastics“, the secretariat of which is held by IBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2005, and conflicting national standards shall be withdrawn at the latest by August 2005.
15、 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, L
16、ithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 15106-1:2003 has been approved by CEN as EN ISO 15106-1:2005 without any modifications. ENISO151061:2005 Reference number ISO 1510
17、6-1:2003(E)INTERNATIONAL STANDARD ISO 15106-1 First edition 2003-01-15 Plastics Film and sheeting Determination of water vapour transmission rate Part 1: Humidity detection sensor method Plastiques Film et feuille Dtermination du coefficient de transmission de vapeur deau Partie 1: Mthode utilisant
18、un dtecteur dhumidit ENISO151061:2005ii ENISO151061:2005 iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle . 2 5 Test specimens . 2 6 Conditioning 2 7 Apparatus 2 8 Test conditions 3 9 Procedure 4 10 Calculation. 4 11 Test result 5 12 Precision
19、5 13 Test report . 5 ENISO151061:2005iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member bo
20、dy interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrot
21、echnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted b
22、y the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
23、ghts. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15106-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. ISO 15106 consists of the following parts, under the general title Plastics Film and sheeting Determination of wat
24、er vapour transmission rate: Part 1: Humidity detection sensor method Part 2: Infrared detection sensor method Part 3: Electrolytic detection sensor method ENISO151061:2005 1Plastics Film and sheeting Determination of water vapour transmission rate Part 1: Humidity detection sensor method 1 Scope Th
25、is part of ISO 15106 specifies an instrumental method for determining the water vapour transmission rate of plastic film, plastic sheeting and multi-layer structures including plastics, using a humidity detection sensor. NOTE The method provides rapid measurement over a wide range of water vapour tr
26、ansmission rates. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2528
27、:1995, Sheet materials Determination of water vapour transmission rate Gravimetric (dish) method ISO 4593:1993, Plastics Film and sheeting Determination of thickness by mechanical scanning 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 water
28、 vapour transmission rate the amount of water vapour transmitted through unit area of test specimen per unit time under specified conditions NOTE Water vapour transmission rate is expressed in grams per square metre 24 hours g/(m 2 24 h). 3.2 reference test specimen a test specimen whose water vapou
29、r transmission rate is known, or one for which the water vapour transmission rate has been determined in accordance with ISO 2528 ENISO151061:20052 4 Principle A dry chamber, at a specified relative humidity, is separated from a wet chamber, in which the atmosphere is saturated with water vapour at
30、a known temperature, by a sheet of the material to be tested. The change in humidity brought about by water vapour transmitted through the specimen is detected by a humidity sensor capable of providing an electrical output signal which is a measure of the relative humidity in the dry chamber. The ti
31、me taken for the humidity to increase by a given amount is measured and converted into a water vapour transmission rate. 5 Test specimens 5.1 The specimens shall be representative of the material, be free from wrinkles, creases and pinholes, and have uniform thickness. Each specimen shall have a lar
32、ger area than the transmission area of the cell used for the test, and shall be hermetically mounted. 5.2 Three specimens shall be used unless otherwise specified or agreed between the interested parties. NOTE For some products, testing more than three specimens gives a more representative result. 5
33、.3 Unless otherwise specified, determine the thickness of each specimen in accordance with ISO 4593 at three points that are equally spaced. 6 Conditioning Condition the specimens at 23 C 2 C and a relative humidity of (50 10) %. The period of conditioning shall be as stated in the relevant specific
34、ation for the material. 7 Apparatus 7.1 An example of a suitable apparatus is shown in Figure 1. The apparatus includes a transmission cell with two chambers, a lower (high-humidity) chamber and an upper (low-humidity) chamber between which a specimen is mounted, a humidity sensor for determining th
35、e relative humidity in the upper chamber, a pump for supplying air to the upper chamber, a drying tube, and a water reservoir. 7.2 The lower chamber is connected directly to the water reservoir. The upper chamber is designed to collect the water vapour which passes through the specimen from the high
36、-humidity side, and the humidity sensor is mounted over this chamber. The transmission area shall be between 5 cm 2and 100 cm 2 . The temperature of the transmission cell shall be kept within 0,5 C of the test temperature by means of a temperature controller. 7.3 The humidity sensor shall be capable
37、 of detecting humidity changes of 0,05 % RH, and its response speed shall be no longer than 1 s. For each type of humidity sensor, the appropriate maintenance and calibration procedures shall be followed as specified by the manufacturer. 7.4 The water reservoir shall contain distilled or deionized w
38、ater. ENISO151061:2005 3Key 1 Specimen 6 Humidity sensor 2 Transmission cell 7 Recorder 3 Upper chamber 8 Pump 4 Lower chamber 9 Drying tube 5 Water reservoir 10 Stop valve Figure 1 Example of water vapour transmission rate measuring apparatus with humidity sensor 8 Test conditions The test conditio
39、ns should preferably be chosen from those given in Table 1. Table 1 Choice of test conditions Set of conditions Temperature C Desired RH differential % RH of upper chamber % RH of lower chamber % 1 2 3 4 5 25 0,5 38 0,5 40 0,5 23 0,5 25 0,5 90 90 90 85 75 10 10 10 15 25 100 100 100 100 100 Test cond
40、itions other than these shall be agreed upon by the interested parties. ENISO151061:20054 9 Procedure 9.1 Measure the water vapour transmission rate of a reference specimen and then each test specimen as described in 9.2 to 9.6. The water vapour transmission rate of the reference specimen shall be c
41、hecked periodically, preferably once or twice a year. Each laboratory or test site shall maintain and utilize their own reference specimens. 9.2 Introduce sufficient distilled or deionized water into the lower chamber so that, when the specimen is mounted in place, a 5 mm air layer will be left betw
42、een the water surface and the specimen. 9.3 Mount the reference specimen or test specimen hermetically between the upper and lower chambers, taking care that there are no wrinkles or slackness in the specimen. 9.4 Open the two valves (10) to introduce dry air in order to reduce the humidity in the u
43、pper chamber to a level e.g. 1 % or 2 % lower than that required to achieve the desired relative-humidity differential (see Table 1). Close the valves and begin recording the humidity. 9.5 Using the humidity sensor, monitor the increase in relative humidity in the upper chamber due to the water vapo
44、ur passing through the specimen. Record the time taken for the humidity to increase to a level e.g. 1 % or 2 % higher than that corresponding to the desired relative-humidity differential. 9.6 Repeat the operations described in 9.4 and 9.5 until two consecutive times are recorded which are within 5
45、%. If this condition cannot be met, this shall be indicated in the test report. 10 Calculation Calculate the water vapour transmission rate of each test specimen using the following equation: RR SS WVTR ST A TA = where WVTR is the water vapour transmission rate of the test specimen, expressed in gra
46、ms per square metre 24 hours g/(m 2 24 h); S is the water vapour transmission rate of the reference specimen, in g/(m 2 24 h); T Ris the time, in seconds, taken for the relative humidity in the upper chamber to increase from its initial level (1 % or 2 % below the level given in Table 1) to its fina
47、l level (1 % or 2 % above the level given in Table 1) with the reference specimen; T Sis the time, in seconds, taken for the relative humidity in the upper chamber to increase from its initial level (1 % or 2 % below the level given in Table 1) to its final level (1 % or 2 % above the level given in
48、 Table 1) with the test specimen; A Ris the transmission area, in square metres, of the reference specimen; A Sis the transmission area, in square metres, of the test specimen. ENISO151061:2005 511 Test result Calculate the test result as the arithmetic mean of the results obtained for each test specimen, rounding to the second place of decimals if the value is less than one, and to two significant figures if the value is greater than o
