EN ISO 1628-1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoffe - Bestimmung der Viskosität von Polymeren in verdünnter Lösung durch ein Kapillarviskosimeter - Teil 1: Allgemeine Grundlagen (ISO 1628-1:2009)Plastiques - Détermination de la viscosité des polymères en solution diluée à l'aide de viscosimètres à capillaires - Partie 1: Principes généraux (ISO 1628-1:2009)Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 1: General principles (ISO 1628-1:2009)83.080.01Polimerni materiali na splošnoPlastics in generalICS:Ta slovenski standard je istoveten z:EN ISO 1628-1:2009SIST EN ISO 1628-1:2009en,fr,de01-maj-2009SIST EN ISO 1628-1:2009SLOVENSKI
STANDARDSIST EN ISO 1628-1:20001DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 1628-1February 2009ICS 83.080.01Supersedes EN ISO 1628-1:1998
English VersionPlastics - Determination of the viscosity of polymers in dilutesolution using capillary viscometers - Part 1: General principles(ISO 1628-1:2009)Plastiques - Détermination de la viscosité des polymèresen solution diluée à l'aide de viscosimètres à capillaires -Partie 1: Principes généraux (ISO 1628-1:2009)Kunststoffe - Bestimmung der Viskosität von Polymeren inverdünnter Lösung durch ein Kapillarviskosimeter - Teil 1:Allgemeine Grundlagen (ISO 1628-1:2009)This European Standard was approved by CEN on 12 January 2009.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 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 responsibility 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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 1628-1:2009: ESIST EN ISO 1628-1:2009

Reference numberISO 1628-1:2009(E)© ISO 2009
INTERNATIONAL STANDARD ISO1628-1Third edition2009-02-01Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles Plastiques — Détermination de la viscosité des polymères en solution diluée à l'aide de viscosimètres à capillaires —
Partie 1: Principes généraux
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ii © ISO 2009 – All rights reserved
ISO 1628-1:2009(E) © ISO 2009 – All rights reserved iiiContents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Definitions.1 4 Principle.5 5 Apparatus.5 6 Solutions.8 7 Temperature of measurement.9 8 Procedure.9 9 Expression of results.10 10 Test report.11 Annex A (normative)
Cleaning of apparatus.12 Annex B (normative)
Notes on sources of error.13 Bibliography.16
ISO 1628-1:2009(E) iv © ISO 2009 – All rights reserved Foreword ISO (the International 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 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 standardization. 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 voting. 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 patent rights. ISO 1628-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties. This third edition cancels and replaces the second edition (ISO 1628-1:1998), of which it constitutes a minor revision intended primarily to correct an error in Subclause 9.1, paragraph 4 (starting: “The intrinsic viscosity shall be calculated from”), where, in line 2, “intrinsic-viscosity values” has been replaced by “inherent-viscosity” values. 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 principles ⎯ 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
INTERNATIONAL STANDARD ISO 1628-1:2009(E) © ISO 2009 – All rights reserved 1Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles 1 Scope This part of ISO 1628 defines the general conditions for the determination of the reduced viscosity, intrinsic viscosity and K-value of organic polymers in dilute solution. It defines the standard parameters that are applied to viscosity measurement, and can be used to develop standards for measuring the viscosities in solution of individual types of polymer. It can also be used to measure and report the viscosities of polymers in solution for which no separate standards exist. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3105:1994, Glass capillary kinematic viscometers — Specifications and operating instructions ISO 3205, Preferred test temperatures ISO 80000-1, Quantities and units — Part 1: General1) ISO 80000-4, Quantities and units — Part 4: Mechanics 3 Definitions 3.1 Dimensions and units The dimensions of properties defined in this part of ISO 1628 are expressed in terms of L for length, M for mass and T for time in accordance with ISO 80000-1, while the units appropriate to the properties are given in ISO 80000-1 and ISO 80000-4. 3.2 Definitions applicable to any liquid 3.2.1 viscosity viscosity of a fluid sheared between two parallel plates, one of which moves relative to the other in uniform rectilinear motion in its own plane, defined by the Newton equation
1) To be published. (Revision of ISO 31-0:1992) SIST EN ISO 1628-1:2009

ISO 1628-1:2009(E) 2 © ISO 2009 – All rights reserved τηγ= (1) where t is the shear stress; η is the viscosity; γ is the velocity gradient or rate of shear, given by ddzV where V is the velocity of one plane relative to the other and z the coordinate perpendicular to the two planes NOTE 1 The dimensions of viscosity are ML-1T-1. NOTE 2 The units of viscosity are Pa.s. NOTE 3 For practical use, the sub-multiple 10-3 Pa.s is more convenient. NOTE 4 Viscosity is usually taken to mean “Newtonian viscosity”, in which case the ratio of shearing stress to velocity gradient is constant. In non-Newtonian behaviour, which is the usual case with high-polymer solutions, the ratio varies with the shear rate. Such ratios are often called “apparent viscosities” at the corresponding shear rate. 3.2.2 viscosity/density ratio kinematic viscosity v ratio defined by the equation vηρ= (2) where r is the density of the fluid at the temperature at which the viscosity is measured NOTE 1 The dimensions of kinematic viscosity are L2T-1. NOTE 2 The units of kinematic viscosity are m2.s-1. NOTE 3 For practical use, the sub-multiple 10-6 m2.s-1, i.e. mm2.s-1, is more convenient. 3.3 Definitions applicable to polymer solutions 3.3.1 relative viscosity hr ratio of the viscosity of the polymer solution (of stated concentration) η and the viscosity of the pure solvent η0, at the same temperature: r0ηηη= (3) NOTE 1 Also known as viscosity ratio. NOTE 2 The ratio has no dimensions. SIST EN ISO 1628-1:2009

ISO 1628-1:2009(E) © ISO 2009 – All rights reserved 33.3.2 relative viscosity increment viscosity ratio minus one: 0001ηηηηη⎛⎞−−=⎜⎟⎝⎠ (4) NOTE 1 Also known as viscosity ratio increment and specific viscosity. NOTE 2 The increment has no dimensions. 3.3.3 reduced viscosity I ratio of the viscosity ratio increment to the polymer concentration c in the solution: 00cηηΙη−= (5) NOTE 1 Also known as viscosity number. NOTE 2 The dimensions of reduced viscosity are L3M-1. NOTE 3 The units of reduced viscosity are m3/kg. NOTE 4 For practical use, the sub-multiple 10-3 m3/kg, i.e. cm3/g, is more convenient and the commonly quoted numerical values for reduced viscosity (viscosity number) use these practical units. NOTE 5 The reduced viscosity is usually determined at low concentration (less than 5 kg/m3, i.e. 0,005 g/cm3), except in the case of polymers of low molar mass, for which h
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