BS-EN-ISO-307-2007.pdf
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1、BRITISH STANDARD BS EN ISO 307:2007 Plastics Polyamides Determination of viscosity number The European Standard EN ISO 307:2007 has the status of a British Standard ICS 83.080.20 ? Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontro
2、lled Copy, (c) BSI BS EN ISO 307:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007 ISBN 978 0 580 52924 5 National foreword This British Standard was published by BSI. It is the UK implementation of EN ISO 307:2007. I
3、t supersedes BS EN ISO 307:2003 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/82, Thermoplastic materials. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to in
4、clude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South B
5、ank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 307 May 2007 ICS 83.080.20Supersedes EN ISO 307:2003 English Version Plastics - Polyamides - Determination of viscosity number (ISO 307:2007) Plastiques - Polyamide
6、s - Dtermination de lindice de viscosit (ISO 307:2007) Kunststoffe - Polyamide - Bestimmung der Viskosittszahl (ISO 307:2007) This European Standard was approved by CEN on 14 May 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
7、 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 application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versi
8、ons (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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium,
9、 Bulgaria, 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. EUROPEAN COMMITTEE FOR STA
10、NDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 307:2007: E Licensed Copy: London South Bank
11、University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword This document (EN ISO 307:2007) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is
12、 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 November 2007, and conflicting national standards shall be withdrawn at the latest by November 2007. This document supersedes EN ISO 3
13、07:2003. 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, Germany, Greece, Hungary, Iceland, Ireland
14、, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 307:2007 has been approved by CEN as EN ISO 307:2007 without any modifications. EN ISO 307:2007 License
15、d Copy: London South Bank University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 307:2007(E) INTERNATIONAL STANDARD ISO 307 Fifth edition 2007-05-15 Plastics Polyamides Determination of viscosity number Plastiques Polyamides Dter
16、mination de lindice de viscosit EN ISO 307:2007 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007,
17、Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Principle. 3 5 Reagents and materials . 3 5.1 Solvents and reagents 3 5.2 Cleaning liquids 4 6 Apparatus 4 7 Preparation of test samples. 5 7.1 General. 5 7.2 Sa
18、mples containing less than 98 % (by mass) polyamide. 5 8 Calculation of test portion . 6 9 Selection of solvent 6 10 Procedure 7 10.1 Cleaning of the viscometer 7 10.2 Preparation of test solution. 7 10.3 Measurement of flow times 9 11 Expression of results . 10 12 Repeatability and reproducibility
19、10 13 Relationship between the viscosity number determined in 96 % (by mass) sulfuric acid solution and the viscosity determined in various solvents . 11 14 Test report . 11 Annex A (informative) Determination of the concentration of commercial sulfuric acid (95 % to 98 %) and adjustment to 96 % by
20、titration . 13 Annex B (informative) Determination of the concentration of sulfuric acid (95 % to 98 %) and adjustment to 96 % by flow time measurement in a small capillary viscometer . 16 Annex C (informative) Determination of the concentration of commercial formic acid and adjustment to 90 % by ti
21、tration . 18 Annex D (informative) Determination of the concentration of commercial formic acid and adjustment to 90 % by density measurement 20 Annex E (informative) Relationship between the viscosity number determined in 96 % (by mass) sulfuric acid solution and the viscosity determined in various
22、 solvents. 23 Bibliography. 33 EN ISO 307:2007 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:16:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standard
23、s 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. International organiz
24、ations, 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 the rules given in
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