ISO INTERNATIONAL STANDARD 1628-3 Third edition 2010-05-01 Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 3: Polyethylenes and polypropylenes Plastiques Determination de la viscosite des polymeres en solution diluée a I'aide de viscosimetres a capillaires Partie 3: Polyethylenes et polypropylenes Provided by : www.spic.ir Reference number ISO 1628-3:2010(E) @ ISO 2010 ISO 1628-3:2010(E) Contents Page Foreword i 1 Scope 2 Normative referenc 3 Principle. 4 Solvent. 5 Apparatus 6 Test sample 7 Procedure.. 7.1 Cleaning the viscometer.. 7.2 Measurement of efflux time of solvent. 7.3 Choiceofpolymersolutionconcentration 7.4 Preparation of the solution.. 7.5 Measurement of efflux time of solution .. 8 Expression of results 8.1 Reduced viscosity, I... 8.2 Intrinsic viscosity, [n]. 8.3 Precision.. 9 Test repor Provided by : www.spic ii ISO 1628-3:2010(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer 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/lEc Directives, Part 2 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 1628-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This third edition cancels and replaces the second edition (IsO 1628-3:2001), which has been technically revised. The main changes relate to the way in which the solution of the polymer under test is prepared and introduced into the viscometer. 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 Provided by : www.spic.i @ IS0 2010 - All rights reserved