1、BS EN ISO 177:2017Plastics Determination of migration of plasticizers(ISO 177:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 177:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 177:2017. It is identical t
2、o ISO 177:2016. It supersedes BS EN ISO 177:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not pur
3、port to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017. Published by BSI Standards Limited 2017ISBN 978 0 580 92667 9 ICS 83.080.01 Compliance with a British Standard cannot confer immunity from legal obli
4、gations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 177 January 2017 ICS 83.080.01 Supersedes EN ISO
5、177:1999English Version Plastics - Determination of migration of plasticizers (ISO 177:2016) Plastiques - Dtermination de la migration des plastifiants (ISO 177:2016) Kunststoffe - Bestimmung der Migration von Weichmachern (ISO 177:2016) This European Standard was approved by CEN on 21 January 2017.
6、 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 concerning such national standards may be obtained on
7、application to the CEN-CENELEC 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 language and notified to the CEN-CENELE
8、C 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
9、 Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre
10、: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 177:2017 EBS EN ISO 177:2017EN ISO 177:2017 (E) 3 European foreword This document (EN ISO 177:2017) has been prepared by Technical Committ
11、ee ISO/TC 61 “Plastics” in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. 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 July 2017 and confl
12、icting national standards shall be withdrawn at the latest by July 2017. 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. This document
13、 supersedes EN ISO 177:1999. 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, Former Yugoslav Repub
14、lic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 177:2016 has be
15、en approved by CEN as EN ISO 177:2017 without any modification. BS EN ISO 177:2017ISO 177:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Apparatus . 26 Test specimens 27 Conditioning 38 Procedure. 39 Expression of results 410 Test report . 4Bibliograph
16、y 5 ISO 2016 All rights reserved iiiContents PageBS EN ISO 177:2017ISO 177:2016(E)ForewordISO (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
17、 ISO technical committees. Each member 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 collaborate
18、s closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval crit
19、eria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of
20、 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name
21、used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) p
22、rinciples in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical and environmental resistance.This third edition cancels and replaces the second edition (ISO
23、 177:1988), of which it constitutes a minor revision with the following change: the normative references have been updated.iv ISO 2016 All rights reservedBS EN ISO 177:2017INTERNATIONAL STANDARD ISO 177:2016(E)Plastics Determination of migration of plasticizers1 ScopeThis document specifies a method
24、 for the determination of the tendency of plasticizers to migrate from plastics in which they are contained into other materials or other plastics when they are brought into close contact.NOTE 1 The surfaces into which the migration can proceed can also consist of organic surface coatings, such as l
25、acquers.This test is suitablea) for evaluating the tendency displayed by plastics, particularly in the form of films and sheets, tolose certain of their liquid constituents when they are brought into contact with materials thathave an affinity for plasticizers, andb) for studying the tendency to mig
26、rate of plasticizers contained in a resin or a series of resins, in oneor more concentrations.In case b), standard compounds are prepared on the basis of a well-characterized resin with well-defined ratios of plasticizer to resin.NOTE 2 When the absorbent sheets themselves contain a substance capabl
27、e of migrating, simultaneous migrations can occur from the test specimens into the absorbent sheets and vice versa.The results may also be affected by the migration of other constituents of the plastic material (for example, oligomers) or by the loss of any volatile constituents other than plasticiz
28、ers from the plastic material or the absorbent layer.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the
29、latest edition of the referenced document (including any amendments) applies.ISO 291, Plastics Standard atmospheres for conditioning and testingISO 293, Plastics Compression moulding of test specimens of thermoplastic materialsISO 294-1, Plastics Injection moulding of test specimens of thermoplastic
30、 materials Part 1: General principles, and moulding of multipurpose and bar test specimensISO 294-3, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO an
31、d IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp ISO 2016 All rights reserved 1BS EN ISO 177:2017ISO 177:2016(E)3.1migration of pl
32、asticizersloss of mass of a sheet of plasticized plastic when placed in close contact between two absorbent sheets of another material, under specified conditions4 PrincipleA test specimen cut from a sheet or plate of the material or from the finished product to be tested is placed in close contact
33、with two sheets, capable of absorbing plasticizers. It is then subjected to heating under defined conditions. The loss in mass of the test specimen, theoretically equal to the increase in mass of the sheets, is a measure of the migration of the plasticizer.5 Apparatus5.1 Analytical balance, accurate
34、 to 0,001 g.5.2 Micrometer, accurate to 0,01 mm.5.3 Air circulating oven, capable of maintaining the temperature to within 2 C, in the range 50 C to 100 C.5.4 Glass plates, with plane surfaces, of sufficient size to cover the absorbent backing discs (5.6).5.5 Weights, of 5 kg.5.6 Absorbent backing d
35、iscs, with an affinity for plasticizers, 60 mm 1 mm in diameter and at least 0,5 mm in thickness.The materials recommended for the test are: a standard rubber (according to ISO 4649), or polyethylene without additive, or polyvinyl acetate without plasticizer.In the case of a particular application,
36、an absorbent backing disc of the material with which the plastic under test will be in contact when in service shall be used. The surface of the absorbent backing disc shall be sufficiently smooth to ensure continuous contact with the test specimen.6 Test specimens6.1 The test specimens shall be in
37、the form of discs 50 mm 1 mm in diameter and at least 0,5 mm in thickness, cut from a compression-moulded (in accordance with ISO 293) or injection-moulded (in accordance with ISO 294-1 and ISO 294-3) sheet of suitable thickness.The surface of the test specimens shall be sufficiently smooth to ensur
38、e continuous contact with the absorbent backing discs (5.6).6.2 In the case of films, the test specimen of not less than 0,5 mm thickness shall be produced by pressing an adequate number of films at a suitable temperature for about 1 min.6.3 If the test is intended to determine the migration from a
39、finished product, the latter shall be tested at a uniform thickness.2 ISO 2016 All rights reservedBS EN ISO 177:2017ISO 177:2016(E)6.4 If the product to be tested consists of a support (fabric, paper or other suitable material), coated on one face only by the spreading or calendering of a plasticize
40、d resin (such as fabrics coated with vinyl resins or with similar products), the test specimens shall consist of two discs cut from the material itself and superposed in such a way that the uncoated surfaces of the support are touching and the plastic is situated on the other faces of the sandwich s
41、o formed.6.5 Three test specimens shall be tested for each material.7 ConditioningUnless otherwise specified, the test specimens and absorbent backing discs (5.6) shall be conditioned in one of the atmospheres specified in ISO 291.8 Procedure8.1 After conditioning, weigh the test specimens (see Clau
42、se 6) and the discs (5.6) to the nearest 0,001 g and determine their mean thickness to the nearest 0,01 mm.8.2 Place a test specimen of the material under test between two absorbent backing discs, in such a way that their axes coincide and the assembly forms a sandwich. Place the latter between two
43、glass plates (5.4).8.3 If the test is intended to determine the characteristics of particular plasticizers, standard compounds of a specified composition shall be used, as agreed between the interested parties.8.4 To equalize the distribution of pressure between the absorbent backing disc and the te
44、st specimen, a sheet of rubber shall be inserted between the absorbent backing disc and the glass plate. The absorbent backing disc shall be separated from the sheet of rubber by aluminium foil.8.5 Place one of the 5 kg weights (5.5) on the assembly of discs and plates to be tested and place the ass
45、embly in the oven (5.3), maintained at a temperature of 70 C 2 C.It is permissible to superimpose several assemblies, but five at most, separated by glass plates, thus forming a column loaded with a single 5 kg weight. In this event, the temperature shall be measured directly at the interior of the
46、stack, for example, between an absorbent backing disc and the sheet of rubber inserted to equalize the pressure.When it is required to take account of the service temperature of the material, the test should be conducted at the temperature recommended in the specification for the application of the
47、material. In the absence of any particular specification, if it is desired to perform a test at a temperature either lower or higher than 70 C, 50 C or 85 C, respectively, should be used.8.6 Fresh absorbent backing discs shall be used for each test.8.7 After 24 h, remove the assemblies from the oven
48、. Separate the test specimens from the absorbent backing discs and recondition all of them under the same conditions as those applied prior to the initial weighing. Reweigh the test specimens and the absorbent backing discs.8.8 In order to determine the progress of migration as a function of time, i
49、t is suggested that measurements be effected after test periods of 1 d, 2 d, 5 d, 10 d, 15 d and 30 d. In such cases, three test specimens shall be used for each test duration. ISO 2016 All rights reserved 3BS EN ISO 177:2017ISO 177:2016(E)9 Expression of resultsCalculate the arithmetic means of the changes in mass in grams:a) of the three test specimens;b) of the three sets of two discs.If the maximum spread of the results relating to a series of three test specimens or to a series of three pairs of discs differs by 10 %
