1、BRITISH STANDARDBS EN ISO 7391-2:2006Plastics Polycarbonate (PC) moulding and extrusion materials Part 2: Preparation of test specimens and determination of propertiesThe European Standard EN ISO 7391-2:2006 has the status of a British StandardICS 83.080.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43
2、g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 7391-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2006 BS
3、I 2006ISBN 0 580 48057 7National forewordThis British Standard is the official English language version of EN ISO 7391-2:2006. It is identical with ISO 7391-2:2006. It supersedes BS EN ISO 7391-2:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI
4、/82, Thermoplastic materials, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in t
5、he BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible
6、for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK inter
7、ests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 6, an inside back cover a
8、nd a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 7391-2March 2006ICS 83.080.20 Supersedes EN ISO 7391-2:1999 English VersionPl
9、astics Polycarbonate (PC) moulding and extrusion materials Part 2: Preparation of test specimens and determination ofproperties (ISO 7391-2:2006)Plastiques Polycarbonate (PC) pour moulage et extrusion Partie 2: Prparation des prouvettes et dterminationdes proprits (ISO 7391-2:2006)Kunststoffe Polyca
10、rbonat (PC)-Formmassen Teil 2:Herstellung von Probekrpern und Bestimmung vonEigenschaften (ISO 7391-2:2006)This European Standard was approved by CEN on 9 February 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanSt
11、andard 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 Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French,
12、 German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, D
13、enmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, 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 NORMALISAT
14、IONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 7391-2:2006: EForeword This document (EN ISO 7391-2:2006) has been prepared by Technical
15、 Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. 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
16、2006, and conflicting national standards shall be withdrawn at the latest by September 2006. This document supersedes EN ISO 7391-2:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
17、Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice
18、The text of ISO 7391-2:2006 has been approved by CEN as EN ISO 7391-2:2006 without any modifications. EN ISO 7391-2:2006Reference numberISO 7391-2:2006(E)INTERNATIONAL STANDARD ISO7391-2Third edition2006-03-01Plastics Polycarbonate (PC) moulding and extrusion materials Part 2: Preparation of test sp
19、ecimens and determination of properties Plastiques Polycarbonate (PC) pour moulage et extrusion Partie 2: Prparation des prouvettes et dtermination des proprits EN ISO 7391-2:2006ii iiiContents Page Foreword iv 1 Scope . 1 2 Conformance. 1 3 Normative references . 1 4 Preparation of test specimens 3
20、 4.1 General. 3 4.2 Treatment of the material before moulding .3 4.3 Injection moulding 3 4.4 Compression moulding 3 5 Conditioning of test specimens 4 6 Determination of properties. 4 EN ISO 7391-2:2006iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of
21、 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 established has the right to be represented on that committee. Int
22、ernational 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 standardization. International Standards are drafted in accordance with t
23、he 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 voting. Publication as an International Standard requires approval
24、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 patent rights. ISO 7391-2 was prepared by Technical Committee
25、ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This third edition cancels and replaces the second edition (ISO 7391-2:1996), which has been technically revised. ISO 7391 consists of the following parts, under the general title Plastics Polycarbonate (PC) moulding and extrusion mate
26、rials: Part 1: Designation system and basis for specifications Part 2: Preparation of test specimens and determination of properties EN ISO 7391-2:20061Plastics Polycarbonate (PC) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties 1 Scope This part
27、 of ISO 7391 specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of polycarbonate moulding and extrusion materials. Requirements for handling test material and for conditioning both the test material before moulding and the specimens b
28、efore testing are given here. 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 which are suitable and necessary to characterize polycarbonate moulding an
29、d 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 7391, as are the designatory properties s
30、pecified in Part 1. In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and conditioning, the specimen dimensions and the test procedures specified herein. Values determined will not necessarily be identical to those obtained using specimens
31、 of different dimensions or prepared using different procedures. 2 Conformance In Clause 3, the year of publication of each normative reference has been specifically stated. In order to be able to claim conformity with this part of ISO 7391, it is essential that the user use only those editions give
32、n, and not earlier or more recent editions. 3 Normative references ISO 62:1999, Plastics Determination of water absorption ISO 75-2:2004, Plastics Determination of temperature of deflection under load Part 2: Plastics and ebonite ISO 178:2001, Plastics Determination of flexural properties ISO 179-1:
33、2000, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test ISO 180:2000, Plastics Determination of Izod impact strength ISO 291:2005, Plastics Standard atmospheres for conditioning and testing EN ISO 7391-2:20062 ISO 293:2004, Plastics Compression moulding of test
34、specimens of thermoplastic materials ISO 294-1:1996, Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens ISO 306:2004, Plastics Thermoplastic materials Determination of Vicat softening temperature (V
35、ST) ISO 527-2:1993, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics ISO 899-1:2003, Plastics Determination of creep behaviour Part 1: Tensile creep ISO 1133:1997, Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow
36、 rate (MVR) of thermoplastics ISO 1183-1:2004, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method ISO 1628-4:1999, Plastics Determination of the viscosity of polymers in dilute solution using capillary viscome
37、ters Part 4: Polycarbonate (PC) moulding and extrusion materials ISO 2818:1994, Plastics Preparation of test specimens by machining ISO 3167:2002, Plastics Multipurpose test specimens ISO 4589-2:1996, Plastics Determination of burning behaviour by oxygen index Part 2: Ambient-temperature test ISO 73
38、91-1, Plastics Polycarbonate (PC) moulding and extrusion materials Part 1: Designation system and basis for specifications ISO 10350-1:1998, Plastics Acquisition and presentation of comparable single-point data Part 1: Moulding materials ISO 11357-2:1999, Plastics Differential scanning colorimetry (
39、DSC) Part 2: Determination of glass transition temperature ISO 11359-2:1999, Plastics Thermomechanical analysis (TMA) Part 2: Determination of coefficient of linear thermal expansion and glass transition temperature IEC 60093:1980, Methods of test for volume resistivity and surface resistivity of so
40、lid electrical insulating materials IEC 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid insulating materials IEC 60243-1:1998, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60250:1969, Recommended m
41、ethods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60296:2003, Fluids for electrotechnical applications Unused mineral insulating oils for transformers and switchg
42、ear IEC 60695-11-10:2003, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods EN ISO 7391-2:200634 Preparation of test specimens 4.1 General It is essential that specimens are always prepared by the same procedure (either injection moulding or compression moul
43、ding), using the same processing conditions. The procedure to be used for each test method is indicated in Tables 3 and 4 (M = injection moulding, Q = compression moulding). The material shall be kept in moisture-proof containers until it is required for use. Moisture content of filled or reinforced
44、 materials shall be expressed as a percentage of the total mass of the compound. 4.2 Treatment of the material before moulding Before processing, the material sample shall be dried for (5 1) h at (120 3) C. The moisture content shall not exceed 0,02 %. To ensure that the moisture content remains low
45、, it is recommended that the sample material in the feed hopper of the injection-moulding machine be blanketed with dried air or nitrogen at a temperature of (110 10) C. Better results may be obtained using a dehumidifier hopper drier. 4.3 Injection moulding Injection-moulded specimens shall be prep
46、ared in accordance with ISO 294-1, using the conditions specified in Table 1. Table 1 Conditions for injection moulding of test specimens Melt temperature Mould temperature Average injection velocity Material C C mm/sNon-reinforced grades: MVR 14,2 cm3/10 min 280 80 200 100 9,5 cm3/10 min MVR u 14,2
47、 cm3/10 min 290 80 200 100 4,7 cm3/10 min MVR u 9,5 cm3/10 min 300 80 200 100 MVR u 4,7 cm3/10 min 310 90 200 100 Glass-fibre-reinforced grades 300 110 200 100 4.4 Compression moulding Compression-moulded sheets shall be prepared in accordance with ISO 293, using the conditions specified in Table 2.
48、 Table 2 Conditions for compression moulding of test specimens Moulding temperature Full pressure Full-pressure time Material C MPa min All grades 300 5 2 EN ISO 7391-2:20064 After moulding, cool the specimens for 4 min by putting a water-cooled board between the core and the removable bottom plate
49、at a (moulding) pressure of 1 MPa. 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. 5 Conditioning of test specimens Test specimens for the determination of electrical properties shall be conditioned in accordance with ISO 291 for at least 24 h at (23 2) C and (50 10) % relative humidity. Test specimens for the determi
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1