BS EN ISO 2898-2-2008 Plastics - Plasticized poly(vinyl chloride) (PVC-P) moulding and nextrusion materials - Part 2 Preparation of test specimens and ndetermination of properties《.pdf

1、BS EN ISO2898-2:2008ICS 83.080.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPlastics Plasticizedpoly(vinyl chloride)(PVC-P) moulding andextrusion materialsPart 2: Preparation of test specimensand determination of properties (ISO2898-2:2008)This British Stan

2、dardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 63454 3Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 2898-2:2008National forewordThis British Standard is the UK implementation of EN ISO 2898-2:2008.It

3、supersedes BS EN ISO 2898-2:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/82, Thermoplastic materials.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to includ

4、e all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 2898-2November 2008ICS 83.080.20 Supersedes EN ISO 2898-2:1999 English

5、VersionPlastics - Plasticized poly(vinyl chloride) (PVC-P) moulding andextrusion materials - Part 2: Preparation of test specimens anddetermination of properties (ISO 2898-2:2008)Plastiques - Matriaux base de poly(chlorure de vinyle)plastifi (PVC-P) pour moulage et extrusion - Partie 2:Prparation de

6、s prouvettes et dtermination desproprits (ISO 2898-2:2008)Kunststoffe - Weichmacherhaltige Polyvinylchlorid (PVC-P)-Formmassen - Teil 2: Herstellung von Probekrpern undBestimmung von Eigenschaften (ISO 2898-2:2008)This European Standard was approved by CEN on 6 September 2008.CEN members are bound t

7、o comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Man

8、agement 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as t

9、heofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia,

10、 Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN

11、 national Members.Ref. No. EN ISO 2898-2:2008: EBS EN ISO 2898-2:2008EN ISO 2898-2:2008 (E) 3 Foreword This document (EN ISO 2898-2:2008) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by

12、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 May 2009, and conflicting national standards shall be withdrawn at the latest by May 2009. Attention is drawn to the possibility that some of t

13、he 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 supersedes EN ISO 2898-2:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of th

14、e following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki

15、a, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 2898-2:2008 has been approved by CEN as a EN ISO 2898-2:2008 without any modification. BS EN ISO 2898-2:2008ISO 2898-2:2008(E) ISO 2008 All rights reserved iiiForewordISO (the International Organizatio

16、n for Standardization) is a worldwide federation of national standards bodies(ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee has beenestablished has th

17、e right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization.Internation

18、al 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 Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as a

19、nInternational 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 patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 2898

20、-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplasticmaterials.This fourth edition cancels and replaces the third edition (ISO 2898-2:1997), of which it constitutes a minorrevision, the main purpose of which was to update the normative references.ISO 2898 consi

21、sts of the following parts, under the general title Plastics Plasticized poly(vinyl chloride)(PVC-P) moulding and extrusion materials: Part 1: Designation system and basis for specifications Part 2: Preparation of test specimens and determination of propertiesBS EN ISO 2898-2:2008.iv BS EN ISO 2898-

22、2:2008INTERNATIONAL STANDARD ISO 2898-2:2008(E) ISO 2008 All rights reserved 1Plastics Plasticized poly(vinyl chloride) (PVC-P) moulding and extrusion materials Part 2:Preparation of test specimens and determination of properties1ScopeThis part of ISO 2898 specifies the methods of preparation of tes

23、t specimens and the test methods to be usedin determining the properties of PVC-P moulding and extrusion materials. Requirements for handling testmaterial and for conditioning both the test material before moulding and the specimens before testing are given.Procedures and conditions for the preparat

24、ion of test specimens and procedures for measuring properties ofthe materials from which these specimens are made are given. Properties and test methods which are suitableand necessary to characterize PVC-P moulding and extrusion materials are listed.The properties have been selected from the genera

25、l test methods in ISO 10350-1. Other test methods in wideuse for, or of particular significance to, these moulding and extrusion materials are also included in this part ofISO 2898, as are the designatory properties specified in ISO 2898-1.In order to obtain reproducible and comparable test results,

26、 it is necessary to use the methods of preparationand conditioning, the specimen dimensions and the test procedures specified herein. Values determined willnot necessarily be identical to those obtained using specimens of different dimensions or prepared usingdifferent procedures.2 Normative referen

27、cesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 176:2005, Plastics Determination of loss of p

28、lasticizers Activated carbon methodISO 291, Plastics Standard atmospheres for conditioning and testingISO 293, Plastics Compression moulding of test specimens of thermoplastic materialsISO 458-2, Plastics Determination of stiffness in torsion of flexible materials Part 2: Application toplasticized c

29、ompounds of homopolymers and copolymers of vinyl chlorideISO 527-2:1993, Plastics Determination of tensile properties Part 2: Test conditions for moulding andextrusion plasticsISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shorehardness)ISO 1183-1:2004,

30、Plastics Methods for determining the density of non-cellular plastics Part 1: Immersionmethod, liquid pyknometer method and titration methodISO 2818, Plastics Preparation of test specimens by machiningBS EN ISO 2898-2:2008ISO 2898-2:2008(E)2 ISO 2008 All rights reservedISO 2898-1, Plastics Plasticiz

31、ed poly(vinyl chloride) (PVC-P) moulding and extrusion materials Part 1:Designation system and basis for specificationsISO 3167:2002, Plastics Multipurpose test specimensISO 3451-5:2002, Plastics Determination of ash Part 5: Poly(vinyl chloride)ISO 10350-1, Plastics Acquisition and presentation of c

32、omparable single-point data Part 1: MouldingmaterialsIEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials3 Preparation of test specimens3.1 GeneralIt is essential that specimens are always prepared by the same procedure (compression mould

33、ing), using thesame processing conditions.The material shall be kept in moisture-proof containers until it is required for use.3.2 Treatment of the material before mouldingBefore processing, no pretreatment of the material sample is normally necessary.3.3 Compression mouldingBefore compression mould

34、ing, the material shall be plasticized using a two-roll mill under the conditionsspecified in Table 1.Sheet material from the mill shall be stacked, preferably with sheet orientation alternating from layer to layer, inthe preheated mould. Compression-moulded sheets shall then be prepared in accordan

35、ce with ISO 293, usingthe conditions specified in Table 2.Table 1 Conditions for milling of material before compression mouldingShore hardness of materialRoll surface temperatureMilling timeaRoll surface speedSpeed ratioRoll nip widthRoll diameterRoll lengthUp to A 80 130 to 160 Approx. 5 Approx. 10

36、 1:1,2 Approx. 1 e.g. 150 e.g. 300D 35 to D 50 145 to 170 Approx. 5 Approx. 10 1:1,2 Approx. 1 e.g. 150 e.g. 300Above D 50 160 to 175 Approx. 5 Approx. 10 1:1,2 Approx. 1 e.g. 150 e.g. 300aMeasured from the moment when a sheet is formed.C min m/min mm mm mmBS EN ISO 2898-2:2008ISO 2898-2:2008(E) ISO

37、 2008 All rights reserved 3The test specimens required for the determination of the properties shall be machined from the compression-moulded sheets in accordance with ISO 2818 or stamped.For additional details on test specimen preparation, see Annex A.4 Conditioning of test specimensTest specimens

38、for all determinations shall be conditioned in accordance with ISO 291 for at least atand relative humidity.5 Determination of propertiesIn the determination of properties and the presentation of data, the standards, supplementary instructions andnotes given in ISO 10350-1 shall be applied. All test

39、s shall be carried out in the standard atmosphere ofand relative humidity unless specifically stated otherwise in Tables 3 and 4.Table 3 is compiled from ISO 10350-1, and the properties listed are those which are appropriate to PVC-Pmoulding and extrusion materials. These properties are those consid

40、ered useful for comparisons of datagenerated for different thermoplastics.Table 4 contains those properties, not found specifically in Table 3, which are in wide use or of particularsignificance in the practical characterization of PVC-P moulding and extrusion materials.Table 2 Conditions for compre

41、ssion moulding of test specimensShore hardness of materialMoulding temperatureAverage cooling rateDemoulding temperatureFull pressureFull-pressure timePreheating pressurePreheating timeUp to A 80 135 to 165 Not defined Approx. 40a2 to 10 2 to 5 Approx. 0,3 Max. 5D 35 to D 50 145 to 175 Not defined A

42、pprox. 40a2 to 10 2 to 5 Approx. 0,3 Max. 5Above D 50 170 to 180 Not defined Approx. 40a2 to 10 2 to 5 Approx. 0,3 Max. 5aVery soft materials may require a lower temperature.Table 3 General properties and test conditions (selected from ISO 10350-1)Property Unit StandardSpecimen type (dimensions in m

43、m)Test conditionsand supplementary instructionsMechanical propertiesTensile stress at strainMPa ISO 527-2ISO 3167:2002type A specimenTest speed Distance between gauge marks Electrical propertiesVolume resistivity IEC 60093 Voltage Other propertiesDensityaISO 1183-1:2004 At least Method A or BReport

44、the result to two decimal placesaDesignatory property.CC/minC MPa min MPa min48 h23C 2C (50 10) %23C 2C (50 10) %50 % 50 mm/min70 mm m greaterorequalslant80 greaterorequalslant80 1 100 Vkg/m31gBS EN ISO 2898-2:2008ISO 2898-2:2008(E)4 ISO 2008 All rights reservedTable 4 Additional properties and test

45、 conditions of particular utilityto PVC-P moulding and extrusion materialsProperty Unit Standard Specimen typeTest conditionsand supplementary instructionsMechanical propertiesTensile stress at elongationMPa ISO 527-2:1993Type 1BA specimenThickness Test speed Shore A or D hardnessa ISO 868Disc of di

46、ameter or square specimenThickness or (type A: only)Force applied to specimen Take reading after Use Shore D if Shore A hardness Thermal propertiesTorsional stiffness as a function of temperatureaISO 458-2For very flexible compounds, use a specimen at high temperatures of test.The values of the tors

47、ional stiffness are plotted as a function of temperature.The two temperatures at which the stiffness in torsion has values of and are TST 300 and TST 4,1, respectively. For ISO 2898-1, .Other propertiesSulfated ash(by mass)ISO 3451-5:2002 Pellets Method BLoss of plasticizers(by mass)ISO 176:2005Disc

48、 of diameter and thickness Method BaDesignatory property.100 %2mm500 mm/min50 mm50 mm 50 mm4mm 6mm6mm50 N15 s 1s 85C60 mm 60 mm 2mm60 mm 60 mm 4mm300 MPa 4,1 MPaTST = 300% 50 mm1mmBS EN ISO 2898-2:2008ISO 2898-2:2008(E) ISO 2008 All rights reserved 5Annex A(normative)Detailed description of the prep

49、aration of test specimensA.1 PrincipleA rough sheet of the material to be tested is prepared using a heated two-roll mill. This sheet is thencompression moulded into sheets of uniform thickness. Test specimens are prepared from the moulded sheetsby machining or die-cutting.A.2 Preparation of preliminary sheetsA.2.1 ApparatusA.2.1.1 Two-roll mixing mill, capable of operating satisfac