1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1874-2:2012Plastics Polyamide (PA)moulding and extrusionmaterialsPart 2: Preparation of test specimensand determination of properties (ISO1874-2:2012)Copyright European
2、 Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1874-2:2012. It supersedes BS EN ISO
3、1874-2:2006+A1:2010 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/82, Thermoplastic materials.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the nece
4、ssaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 69437 0ICS 83.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was
5、published under the authority of theStandards Policy and Strategy Committee on 31 December 2012.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without li
6、cense from IHS-,-,-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1874-2 November 2012 ICS 83.080.20 Supersedes EN ISO 1874-2:2006English Version Plastics - Polyamide (PA) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties (ISO 1874-2:2
7、012) Plastiques - Matriaux polyamides (PA) pour moulage et extrusion - Partie 2: Prparation des prouvettes et dtermination des proprits (ISO 1874-2:2012) Kunststoffe - Polyamid (PA)-Formmassen fr das Spritzgieen und die Extrusion - Teil 2: Herstellung von Probekrpern und Bestimmung von Eigenschaften
8、 (ISO 1874-2:2012) This European Standard was approved by CEN on 14 November 2012. 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
9、 bibliographical references concerning such national standards may be obtained on 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 r
10、esponsibility of a CEN member into its own language and notified to the CEN-CENELEC 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
11、 Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE
12、NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1874-2:2012: ECopyright European Committee for Standardization Provided by I
13、HS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012EN ISO 1874-2:2012 (E) 3 Foreword This document (EN ISO 1874-2:2012) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committe
14、e 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 May 2013, and conflicting national standards shall be withdrawn at the latest by Ma
15、y 2013. 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 supersedes EN ISO 1874-2:2006. According to the CEN/CENELEC Inte
16、rnal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, I
17、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1874-2:2012 has been approved by CEN as a EN ISO 1874-2:2012 without any modification
18、. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012ISO 1874-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references
19、. 13 Preparation of test specimens . 23.1 Treatment of the material before moulding 23.2 Injection moulding 33.3 Laser sintering . 34 Conditioning of test specimens 54.1 Conditioning states of the test specimen . 54.2 Dry-as-moulded (DAM) state 54.3 Moist state . 65 Determination of properties . 6An
20、nex A (normative) Specimen preparation using laser sintering . 9Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012ISO 1874-2:2012(E)ForewordISO (the Internatio
21、nal 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 body interested in a subject for which a technical committee has been
22、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 Electrotechnical Commission (IEC) on all matters of electrotechnical standar
23、dization.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 by the technical committees are circulated to the member bodies for vot
24、ing. 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 rights. ISO shall not be held responsible for identifying any or all such
25、 patent rights.ISO 1874-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials.This fourth edition cancels and replaces the third edition (ISO 1874-2:2006), which has been technically revised. It also incorporates the Amendment ISO 1874-2:2006/Amd.1:201
26、0.ISO 1874 consists of the following parts, under the general title Plastics Polyamide (PA) moulding and extrusion materials: Part 1: Designation system and basis for specification Part 2: Preparation of test specimens and determination of propertiesiv ISO 2012 All rights reservedCopyright European
27、Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012INTERNATIONAL STANDARD ISO 1874-2:2012(E)Plastics Polyamide (PA) moulding and extrusion materials Part 2: Preparation of test sp
28、ecimens and determination of properties1 ScopeThis part of ISO 1874 specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of polyamide moulding and extrusion materials. Requirements for handling test material and for conditioning both th
29、e 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 of the materials from which these specimens are made are given. Properties and test methods that are suitable and necessa
30、ry to characterize polyamide moulding and extrusion materials are listed.The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for, or of particular significance to, these moulding and extrusion materials are also included in this part of ISO
31、1874, as are the designatory properties viscosity number and tensile modulus of elasticity given in ISO 1874-1.2 Normative referencesThe following normative documents are indispensable for the application of this document. For dated references, only the edition cited applies For undated references,
32、the latest edition of the referenced document (including any amendments) applies.ISO 62, Plastics Determination of water absorptionISO 75-2, Plastics Determination of temperature of deflection under load Part 2: Plastics and eboniteISO 179-1, Plastics Determination of Charpy impact properties Part 1
33、: Non-instrumented impact testISO 179-2, Plastics Determination of Charpy impact properties Part 2: Instrumented impact testISO 291, Plastics Standard atmospheres for conditioning and testingISO 294-1, Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principle
34、s, and moulding of multipurpose and bar test specimensISO 294-3, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small platesISO 294-4, Plastics Injection moulding of test specimens of thermoplastic materials Part 4: Determination of moulding shrinkageISO 307, Plasti
35、cs Polyamides Determination of viscosity numberISO 472, Plastics VocabularyISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plasticsISO 1110, Plastics Polyamides Accelerated conditioning of test specimensISO 1133-2, Plastics Determination of
36、the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics Part 2: Method for materials sensitive to time-temperature history and/or moisture ISO 2012 All rights reserved 1Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo rep
37、roduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012ISO 1874-2:2012(E)ISO 1183-1, Plastics Methods for determining the density and relative density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration methodISO 1183-2, Plastics Met
38、hods for determining the density and relative density of non-cellular plastics Part 2: Density gradient column methodISO 1183-3, Plastics Methods for determining the density and relative density of non-cellular plastics Part 3: Gas pyknometer methodISO 1874-1, Plastics Polyamide (PA) moulding and ex
39、trusion materials Part 1: Designation system and basis for specificationISO 3167, Plastics Multipurpose test specimensISO 3451-4, Plastics Determination of ash Part 4: PolyamidesISO 8256, Plastics Determination of tensile-impact strengthISO 10350-1, Plastics Acquisition and presentation of comparabl
40、e single-point data Part 1: Moulding materialsISO 11357-3, Plastics Differential scanning calorimetry (DSC) Part 3: Determination of temperature and enthalpy of melting and crystallizationISO 15512, Plastics Determination of water contentISO 27547-1, Plastics Preparation of test specimens of thermop
41、lastic materials using mouldless technologies Part 1: General principles, and laser sintering of test specimensIEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materialsIEC 60112, Method for the determination of the proof and the comparative tr
42、acking indices of solid insulating materialsIEC 60243-1, Electric strength of insulating materials Test methods Part 1: Tests at power frequenciesIEC 60250, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, au
43、dio and radio frequencies including metre wavelengthsIEC 60296, Fluids for electrotechnical applications Unused mineral insulating oils for transformers and switchgearIEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods3 Preparation of test spe
44、cimens3.1 Treatment of the material before mouldingBefore processing, the material sample shall have reached room temperature.Before processing, the moisture content of the material sample shall not exceed 0,2 % (mass fraction) in the case of PAs having a viscosity number 200 ml/g, and not exceed 0,
45、1 % (mass fraction) in the case of PAs having a viscosity number 200 ml/g. For PA46, PA6T/66, PA6T/XT, PA6T/6I/66, PA6T/6I, PA6I/6T and PA NDT/INDT, the moisture content shall be less than 0,1 % (mass fraction).The moisture content of filled or reinforced materials shall be expressed as a percentage
46、 of the total mass of the compound. The moisture content shall be determined in accordance with ISO 15512 and the viscosity number in accordance with ISO 307.To ensure that the moisture content remains low, it is recommended that the sample material in the feed hopper of the injection-moulding machi
47、ne be blanketed with a suitable gas (dried air, nitrogen or argon, for example). Better results may be obtained using a dehumidifier hopper drier.If test specimens are to be prepared by laser sintering (see 3.3 and Annex A), follow the instructions given in Annex A for treatment of the material befo
48、re processing.2 ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 1874-2:2012ISO 1874-2:2012(E)3.2 Injection mouldingFor the acquisition and presentation of comparable data, injection-moulded specimens are used so that valid comparisons between materials can be made. These data represent the most basic approach to the designation of the properties of materials.Injection-
