1、BS EN ISO6179:2010ICS 59.080.40; 83.140.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDRubber, vulcanizedor thermoplastic Rubber sheets andrubber-coated fabrics Determinationof transmissionrate of volatileliquids (gravimetrictechnique)This British Standardwas
2、 published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 64837 3Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 6179:2010National forewordThis British Standard is the UK implementation of EN ISO 6179:2010. Itsupersedes BS E
3、N ISO 6179:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/22, Physical testing of rubber.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the nece
4、ssary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6179 March 2010 ICS 59.080.40; 83.140.10 Supersedes EN ISO 6179:2000English Versio
5、n Rubber, vulcanized or thermoplastic - Rubber sheets and rubber-coated fabrics - Determination of transmission rate of volatile liquids (gravimetric technique) (ISO 6179:2010) Caoutchouc vulcanis ou thermoplastique - Feuilles de caoutchouc et supports textiles revtus de caoutchouc - Dtermination du
6、 taux de transmission des liquides volatils (technique gravimtrique) (ISO 6179:2010) Elastomere oder thermoplastische Elastomere - Elastomerfolien und elastomer-beschichtete Gewebe - Bestimmung der Durchlssigkeitsrate von flchtigen Flssigkeiten (gravimetrisches Verfahren) (ISO 6179:2010)This Europea
7、n Standard was approved by CEN on 13 March 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concer
8、ning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own
9、 language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia
10、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels
11、 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6179:2010: EBS EN ISO 6179:2010EN ISO 6179:2010 (E) 3 Foreword This document (EN ISO 6179:2010) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber product
12、s“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. 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 September 2010, and
13、 conflicting national standards shall be withdrawn at the latest by September 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Th
14、is document supersedes EN ISO 6179:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, G
15、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 6179:2010 has been approved by CEN as a EN ISO 6179:2010 w
16、ithout any modification. BS EN ISO 6179:2010ISO 6179:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Apparatus.2 5 Test pieces .2 5.1 Preparation.2 5.2 Thickness measurement.3 5.3 Number of test pieces.3 6 Time-interval
17、between vulcanization and testing 3 7 Conditioning 4 8 Test conditions 4 8.1 Temperature.4 8.2 Length of test.4 9 Procedure.4 9.1 Preliminary operations4 9.2 Method A 5 9.3 Method B 5 10 Expression of results6 10.1 Method of calculation6 10.2 Graphical method 6 11 Test report6 BS EN ISO 6179:2010ISO
18、 6179:2010(E) iv ISO 2010 All rights reservedForeword 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 memb
19、er body 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 Ele
20、ctrotechnical 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 adop
21、ted by 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 pate
22、nt rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6179 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This fourth edition cancels and replaces the third edition (ISO 6179:1998), of whic
23、h it constitutes a minor revision intended to update the normative references (ISO 471 and ISO 4648 have been replaced by ISO 23529). BS EN ISO 6179:2010INTERNATIONAL STANDARD ISO 6179:2010(E) ISO 2010 All rights reserved 1Rubber, vulcanized or thermoplastic Rubber sheets and rubber-coated fabrics D
24、etermination of transmission rate of volatile liquids (gravimetric technique) WARNING Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the respons
25、ibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. CAUTION Certain procedures specified in this International Standard may involve the use or generation of substances, or the generation of waste, that could const
26、itute a local environmental hazard. Reference should be made to appropriate documentation on safe handling and disposal after use. 1 Scope This International Standard specifies two methods for determining, by measurement of the transmission rate, the permeability of rubber to volatile liquids diffus
27、ing into open air. It is applicable only to materials in sheet form and to coated fabrics having thicknesses between 0,2 mm and 3,0 mm. It is restricted to transmission rates of more than 0,1 g/m2h. The methods are particularly useful for comparing the relative transmission rates of one liquid throu
28、gh different materials, or of several liquids through one material. Method A, with refilling, is used when testing mixtures of liquids which give different transmission rates. Method B, with no refilling, is used for a single-component liquid. NOTE A method for the determination of water vapour tran
29、smission rate is given in ISO 2528, Sheet materials Determination of water vapour transmission rate Gravimetric (dish) method. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For u
30、ndated references, the latest edition of the referenced document (including any amendments) applies. ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 2231, Rubber- or plastics-coated fabrics Standard atmospheres for conditioning and testing ISO 2286-3, Ru
31、bber- or plastics-coated fabrics Determination of roll characteristics Part 3: Method for determination of thickness ISO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth ISO 23529, Rubber General procedures for preparing and conditioning test pieces for
32、physical test methods BS EN ISO 6179:2010ISO 6179:2010(E) 2 ISO 2010 All rights reserved3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 transmission rate mass, in grams, of a volatile liquid which permeates through each square metre of a rubb
33、er test sheet of a given thickness per hour under the test conditions specified in this International Standard 4 Apparatus 4.1 Container assembly, consisting of a container for the test liquid, a suitable clamping device for the test piece which does not impose a shearing force on the test piece, an
34、d a suitable support for the container, so that the test piece and the test liquid are in contact at all times (with the apparatus inverted after filling), and such as to permit free circulation of air across the surface of the test piece. The container shall have a volume of 60 cm3to 100 cm3and an
35、inlet valve for filling and refilling. NOTE For method B, an inlet valve is not necessary when introducing the test liquid before mounting the test piece in place. The mass of the container, the clamping ring, the test piece and 50 cm3of the test liquid shall not exceed the capacity of the balance (
36、4.2). The open end of the container and the hole in the clamping ring shall have a diameter such that approximately 10 cm2of the surface of the test piece is exposed on each side. A suitable apparatus is shown in Figure 1. When testing materials without fabric and with a high transmission rate or wh
37、en testing at high test temperatures, a circular piece of stainless-steel wire mesh of aperture size 1 mm (in accordance with ISO 3310-1) shall be mounted together with the test piece so as to support the latter on its outer surface during the test. 4.2 Balance, with a capacity of at least 200 g and
38、 accurate to 1 mg. 4.3 Cabinet oven, complying with the requirements of ISO 188, for tests performed at elevated temperatures. 5 Test pieces 5.1 Preparation The standard test piece shall be circular and cut from a flat sheet in the way specified in ISO 23529. The surface shall be flat, smooth and fr
39、ee from defects. Each test piece shall be of a suitable size to fit the container assembly and to be securely clamped in position. The thickness of each test piece shall be 2 mm 0,2 mm. The difference in the mean thickness of test pieces used for comparison tests shall not be more than 0,05 mm. Test
40、 pieces may also be cut from finished products made from sheets or coated fabrics. In this case, the thickness shall not be less than 0,2 mm and not more than 3,0 mm. BS EN ISO 6179:2010ISO 6179:2010(E) ISO 2010 All rights reserved 3Dimensions in millimetres Key 1 test piece 2 non-rotating clamp 3 b
41、all bearing 4 screw top 5 liquid container (volume 60 cm3to 100 cm3) 6 filling valve(s) Figure 1 Test apparatus 5.2 Thickness measurement Measure the thickness of the test pieces in accordance with ISO 2286-3 or ISO 23529, as appropriate. 5.3 Number of test pieces Use at least three test pieces for
42、each test. 6 Time-interval between vulcanization and testing The requirements of ISO 23529 shall apply. BS EN ISO 6179:2010ISO 6179:2010(E) 4 ISO 2010 All rights reserved7 Conditioning Before the test, condition the test pieces in accordance with ISO 23529 (or in the case of coated fabrics ISO 2231)
43、, i.e. at 23 C 2 C and (50 5) % relative humidity or 27 C 2 C and (65 5) % relative humidity, depending on national practice. 8 Test conditions 8.1 Temperature The normal test temperature is 23 C 2 C or 27 C 2 C (see Clause 7). If, for technical reasons, an elevated temperature is required, choose i
44、t from the following list of temperatures: 40 C 1 C 55 C 1 C 70 C 1 C 85 C 1 C 100 C 1 C If an elevated test temperature is used, a pressure will be generated within the container, which might have some effect on the results of the determination. Irrespective of the test temperature, carry out all w
45、eighing operations at 23 C 2 C or 27 C 2 C. 8.2 Length of test The preferred test period is 24 h 2 h. Alternatively, for materials having high transmission rates, a shorter test period of 8 h or 16 h is recommended. For materials having low transmission rates, a test period of 3 days or 7 days is re
46、commended. NOTE In the case of mixtures of liquids, the test period can be limited by a component with a low concentration and high partial transmission rate. This can cause a rapid change in the composition of the liquid and therefore of the transmission rate. Each test period commences immediately
47、 after the container has been weighed and placed so that the liquid is in contact with the inner surface of the test piece. If the test is carried out at elevated temperature, the test period commences immediately after placing the apparatus in the oven, which shall be not more than 30 min after wei
48、ghing, and the container shall be allowed to cool to standard laboratory temperature (23 C 2 C or 27 C 2 C) at the end of each test period before it is weighed. This cooling period (which is not included in the test period) shall not exceed 1 h. 9 Procedure 9.1 Preliminary operations Measure the thi
49、ckness of a test piece, with an accuracy of 0,01 mm, at four points along the circumference of the area exposed to the test liquid and at the centre as specified in ISO 2286-3 or ISO 23529, as appropriate. If any two measurements differ by more than 0,05 mm, discard the test piece. Report the mean value. Put the test piece on the open end of the container, together with the stainless-steel wire mesh if necessary (see 4.1), and close the container with the clamping
