ISO INTERNATIONAL STANDARD 1628-4 Second edition 1999-03-01 Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 4: Polycarbonate (PC) moulding and extrusion materials Plastiques -Détermination de la viscosite des polymeres en solution diluée a Iaide de viscosimetres a capillaires Partie 4: Matériaux polycarbonates (PC) pour moulage et extrusion Tso Reference number ISO 1628-4:1999(E) Not for Resale ISO 1628-4:1999(E) Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(iSC member bodies). The work of preparing International Standards is normally carried out through isO technical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,ir liaison with isO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Thermoplastic materials. This second edition cancels and replaces the first edition (IsO 1628-4:1986), which has been technically revised. Iso 1628 consists of the following parts under the general title Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers: Part 1: General conditions Part 2: Poly(vinyl chloride) resins - Part 3: Polyethylenes and polypropylenes Part 4: Polycarbonate (PC) moulding and extrusion materials Part 5: Thermoplastic polyester (TP) homopolymers and copolymers -Part 6: Methyl methacrylate polymers Annex A forms an integral part of this part of ISO 1628. ?ISO1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. InternationalOrganizationforStandardizatior Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland INTERNATIONAL STANDARD @ ISO ISO 1628-4:1999(E) Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 4: Polycarbonate (PC) moulding and extrusion materials 1 Scope This part of Iso 1628 describes the conditions necessary for the determination of the viscosity number (also known as the reduced viscosity) and the relative viscosity of polycarbonates in dilute solution. It can be used for pure polycarbonates and blends with other polymers, as well as mixtures of both, with or without fillers, as defined in ISO 7391-1. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IsO 1628. At the time of publication, the editions indicated were valid. All standards are subject to revision, and most recent editions of the standards indicated below. Members of IEC and isO maintain registers of currently valid International Standards. ISO 1628-1:1998,Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles Iso 3105:1994, Glass capillary kinematic viscometers Specifications and operating instructions. IsO 4793:1980, Laboratory sintered (fritted) filters Porosity grading, classification and designation Iso 7391-1:1996, Plastics - Polycarbonate (PC) moulding and extrusion materials - Part 1: Designation system and basis for specifications. Iso 7391-2:1996, Plastics - Polycarbonate (PC) moulding and extrusion materials — Part 2: Preparation of test specimensanddeterminationofproperties. Copyright Int lal Organization for Standardizatior