1、March 2009DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.080.20!$VZO“1515544www
2、.din.deDDIN EN ISO 2898-2Plastics Plasticized poly(vinyl chloride) (PVC-P) moulding and extrusionmaterials Part 2: Preparation of test specimens and determination of properties(ISO 2898-2:2008)English version of DIN EN ISO 2898-2:2009-03Kunststoffe Weichmacherhaltige Polyvinylchlorid (PVC-P)-Formmas
3、sen Teil 2: Herstellung von Probekrpern und Bestimmung von Eigenschaften(ISO 2898-2:2008)Englische Fassung DIN EN ISO 2898-2:2009-03SupersedesDIN EN ISO 2898-2:1999-10www.beuth.deDocument comprises 11 pagesDIN EN ISO 2898-2:2009-03 2 National foreword This standard has been prepared by Technical Com
4、mittee ISO/TC 61 “Plastics” in collaboration with Technical Committee CEN/TC 249 “Plastics”, (Secretariat: NBN, Belgium) The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Technical Committee NA 054-02-05 AA PVC-Formmassen. The
5、 DIN Standard corresponding to the International Standard referred to in the EN ISO is as follows: ISO 458-2 DIN ISO 458-2 Amendments This standard differs from DIN EN ISO 2898-2:1999-10 as follows: a) The standard has been editorially revised. b) Normative references have been updated. Previous edi
6、tions DIN 7749-2: 1979-07, 1988-09 DIN EN ISO 2898-2: 1999-10 National Annex NA (informative) Bibliography DIN ISO 458-2, Plastics Determination of stiffness in torsion of flexible materials Part 2: Application to plasticized compounds of homopolymers and copolymers of vinyl chloride EUROPEAN STANDA
7、RDNORME EUROPENNEEUROPISCHE NORMEN ISO 2898-2November 2008ICS 83.080.20 Supersedes EN ISO 2898-2:1999 English VersionPlastics - Plasticized poly(vinyl chloride) (PVC-P) moulding andextrusion materials - Part 2: Preparation of test specimens anddetermination of properties (ISO 2898-2:2008)Plastiques
8、- Matriaux base de poly(chlorure de vinyle)plastifi (PVC-P) pour moulage et extrusion - Partie 2:Prparation des prouvettes et dtermination desproprits (ISO 2898-2:2008)Kunststoffe - Weichmacherhaltige Polyvinylchlorid (PVC-P)-Formmassen - Teil 2: Herstellung von Probekrpern undBestimmung von Eigensc
9、haften (ISO 2898-2:2008)This European Standard was approved by CEN on 6 September 2008.CEN members are bound to 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
10、and bibliographical references concerning such nationalstandards 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 translationunder the responsib
11、ility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland,
12、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart,
13、 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 2898-2:2008: EEN ISO 2898-2:2008 (E) 2Contents Page Foreword. 3 1 Scope . 4 2 Normative references . 4 3 Preparation of test specimens 5 3.1 General. 5 3.2
14、Treatment of the material before moulding .5 3.3 Compression moulding 5 4 Conditioning of test specimens . 6 5 Determination of properties. 6 Annex A (informative) Detailed description of the preparation of test specimens 8 A.1 Principle. 8 A.2 Preparation of preliminary sheets. 8 A.2.1 Apparatus 8
15、A.2.2 Milling conditions . 8 A.2.3 Procedure 8 A.3 Preparation of moulded sheets. 9 A.3.1 Apparatus 9 A.3.2 Moulding conditions. 9 A.3.3 Procedure 9 A.4 Preparation of the test specimens from the moulded sheet 9 DIN EN ISO 2898-2:2009-03 Foreword This document (EN ISO 2898-2:2008) has been prepared
16、by Technical Committee 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
17、 May 2009, and conflicting national standards shall be withdrawn at the latest by May 2009. 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 ri
18、ghts. This document supersedes EN ISO 2898-2:1999. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
19、Germany, 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 2898-2:2008 has been approved by CEN as a EN ISO 2898-2:2
20、008 without any modification. EN ISO 2898-2:2008 (E) 3DIN EN ISO 2898-2:2009-03 1ScopeThis part of ISO 2898 specifies the methods of preparation of test specimens and the test methods to be usedin determining the properties of PVC-P moulding and extrusion materials. Requirements for handling testmat
21、erial and for conditioning both the test material before moulding and the specimens before testing are given.Procedures and conditions for the preparation of test specimens and procedures for measuring properties ofthe materials from which these specimens are made are given. Properties and test meth
22、ods which are suitableand necessary to characterize PVC-P moulding and extrusion materials are listed.The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wideuse for, or of particular significance to, these moulding and extrusion materials are also i
23、ncluded in this part ofISO 2898, as are the designatory properties specified in ISO 2898-1.In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparationand conditioning, the specimen dimensions and the test procedures specified herein. Values determin
24、ed willnot necessarily be identical to those obtained using specimens of different dimensions or prepared usingdifferent procedures.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. Fo
25、r undated references, the latest edition of the referenced document(including any amendments) applies.ISO 176:2005, Plastics Determination of loss of plasticizers Activated carbon methodISO 291, Plastics Standard atmospheres for conditioning and testingISO 293, Plastics Compression moulding of test
26、specimens of thermoplastic materialsISO 458-2, Plastics Determination of stiffness in torsion of flexible materials Part 2: Application toplasticized compounds of homopolymers and copolymers of vinyl chlorideISO 527-2:1993, Plastics Determination of tensile properties Part 2: Test conditions for mou
27、lding andextrusion plasticsISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shorehardness)ISO 1183-1:2004, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersionmethod, liquid pyknometer method and titration methodISO 2818,
28、 Plastics Preparation of test specimens by machiningEN ISO 2898-2:2008 (E) 4DIN EN ISO 2898-2:2009-03 ISO 2898-1, Plastics Plasticized poly(vinyl chloride) (PVC-P) moulding and extrusion materials Part 1:Designation system and basis for specificationsISO 3167:2002, Plastics Multipurpose test specime
29、nsISO 3451-5:2002, Plastics Determination of ash Part 5: Poly(vinyl chloride)ISO 10350-1, Plastics Acquisition and presentation of comparable single-point data Part 1: MouldingmaterialsIEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials3
30、 Preparation of test specimens3.1 GeneralIt is essential that specimens are always prepared by the same procedure (compression moulding), 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 moul
31、dingBefore processing, no pretreatment of the material sample is normally necessary.3.3 Compression mouldingBefore compression moulding, 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 she
32、et orientation alternating from layer to layer, inthe preheated mould. Compression-moulded sheets shall then be prepared in accordance with ISO 293, usingthe conditions specified in Table 2.Table 1 Conditions for milling of material before compression mouldingShore hardness of materialRoll surface t
33、emperatureMilling timeaRoll surface speedSpeed ratioRoll nip widthRoll diameterRoll lengthUp to A 80 130 to 160 Approx. 5 Approx. 10 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.
34、 1 e.g. 150 e.g. 300aMeasured from the moment when a sheet is formed.C min m/min mm mm mmEN ISO 2898-2:2008 (E) 5DIN EN ISO 2898-2:2009-03 The test specimens required for the determination of the properties shall be machined from the compression-moulded sheets in accordance with ISO 2818 or stamped.
35、For additional details on test specimen preparation, see Annex A.4 Conditioning of test specimensTest specimens 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 presenta
36、tion of data, the standards, supplementary instructions andnotes given in ISO 10350-1 shall be applied. All tests 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 li
37、sted are those which are appropriate to PVC-Pmoulding and extrusion materials. These properties are those considered 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 particularsignif
38、icance in the practical characterization of PVC-P moulding and extrusion materials.Table 2 Conditions for compression moulding of test specimensShore hardness of materialMoulding temperatureAverage cooling rateDemoulding temperatureFull pressureFull-pressure timePreheating pressurePreheating timeUp
39、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 Approx. 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 Genera
40、l properties and test conditions (selected from ISO 10350-1)Property Unit StandardSpecimen type (dimensions in mm)Test conditionsand supplementary instructionsMechanical propertiesTensile stress at strainMPa ISO 527-2ISO 3167:2002type A specimenTest speed Distance between gauge marks Electrical prop
41、ertiesVolume resistivity IEC 60093 Voltage Other propertiesDensityaISO 1183-1:2004 At least Method A or BReport 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
42、/m31gEN ISO 2898-2:2008 (E) 6DIN EN ISO 2898-2:2009-03 Table 4 Additional properties and test conditions of particular utilityto PVC-P moulding and extrusion materialsProperty Unit Standard Specimen typeTest conditionsand supplementary instructionsMechanical propertiesTensile stress at elongationMPa
43、 ISO 527-2:1993Type 1BA specimenThickness Test speed Shore A or D hardnessa ISO 868Disc of diameter 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 458-2Fo
44、r very flexible compounds, use a specimen at high temperatures of test.The values of the torsional 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 propertiesSulfa
45、ted ash(by mass)ISO 3451-5:2002 Pellets Method BLoss of plasticizers(by mass)ISO 176:2005Disc 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 mm1mmEN ISO 2898-2:2008 (E) 7DIN
46、 EN ISO 2898-2:2009-03 Annex A(normative)Detailed description of the preparation 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
47、 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 satisfactorily at temperatures up to and including .The rolls shall be cylindrical; the dimensions may be, for example: diameter , length .A.2.2 Milli
48、ng conditionsA.2.2.1 The surface temperature of the mill rolls and the moulding temperature used subsequently (see A.3.3)shall be based on the Shore hardness value of the material.The temperature of the rolls shall be selected to permit the material to band on the surface of the roll betweenand afte
49、r the commencement of milling. There shall be a maximum difference of between therolls and along the length of each roll.A.2.2.2 Detailed schedules for the milling of individual compositions are not included in this part of ISO 2898,but the following remarks apply to mixes of all types:The surface speed of the rolls shall be approximately .It is customary for there to be a differential speed between the two rolls. The preferred ratio is 1:1,2, the front(working) roll being the s
