ISO INTERNATIONAL STANDARD 11468 First edition 1997-12-15 Plastics --- Preparation of PvC pastes for test purposes - Dissolver method Plastiques Preparation des pates PvC pour essai Methode utilisant un dispositifpourdissolution This material is reproduced from Iso documents under International Organization for Standardization (IsO) Copyright License number IHS/lCc/1996.Notforresale.NopartoftheseISOdocumentsmaybe reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior written consent of IsO (Case postale 56, 1211 Geneva 20, Switzerland, Fax +41 22 734 10 79), iHs or the Iso Licensor's members. ISO Reference number ISO 11468:1997(E) Copyright Intermational Organization for Standardization IHS icense with IS No reproduction or networking permitted without license from IHS Not for Resale ISO 11468:1997(E) 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 (lEC)onallmattersofelectrotechnicalstandardization. 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: International Standard ISO 11468 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. @SO1997 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. International Organization for Standardization Case postale 56 : CH-1211 Geneve 20 . Switzerland Internet [email protected] X.400 c=ch; a=4oonet; p=iso; o=isocs; S=central Printed in Switzerland ht international Organization for Standardization ced without license from IHS Not for Resale ISO 11468:1997(E) INTERNATIONAL STANDARD ISO Plastics -- Preparation of PvC pastes for test purposes : Dissolver method 1 Scope This International Standard specifies a method, using a dissolver, for the preparation of PvC pastes made from polymerized vinyl chiloride (VC). Such PVC pastes are used to characterize the various VC polymers with reference to their rheological properties, as well as being a means of establishing consistency between various defiveries. cannotbeusedforresindesignationpurposes. 2 Normative references International Standard. At the time of publication, the editions indicated were valid. All standards are subject to possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISo maintain registers of currently valid International Standards. Iso 291:1997, Plastics - Standard atmospheres for conditioning and testing. Iso 1060-2:—-1), Plastics Homopolymer and copolymer resins of vinyl chloride -- Part 2: Preparation of test specimens and determination of properties. 3Principle A PvC paste is prepared by mixing a PvC resin and a plasticizer in a dissolver. For the purposes of this international Standard, a plastisol is defined as a liquid PvC composition consisting of a suspension of PvC resin in a liquid plasticizer. 4 Apparatus and materials2) 4.1 Dissolver, consisting of a cylindrical mixing vessel, preferably double-walled, and a motor-driven spindle to which is attached a horizontal coarsely toothed mixing disc (dissolver disc). The dissoiver disc transfers energy to the PvC paste, causing the paste ingredients to be driven centrall