ISO INTERNATIONAL STANDARD 10724-1 First edition 1998-11-15 Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) - Part 1: General principles and moulding of multipurpose test specimens a mouler (PMC) thermodurcissables Partie 1: Principes généraux et moulage d'eprouvettes a usages multiples Tso Referencenumber ISO 10724-1:1998(E) national Organization for Standardization Not for Resale ISO 10724-1:1998(E) Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(iSC 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 therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in 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. International Standard ISO 10724-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. Together with part 2, this part of ISO 10724 cancels and replaces ISO 10724:1994, which has been revised to improve the definition of the injection-moulding parameters and has been restructured to specify two types of isO Care has been taken to ensure that the iso moulds described can all be fitted in existing injection-moulding equipment and have interchangeable cavity plates. for thermoplastic materials, isO 294:1996, Plastics - Injection moulding of test specimens of thermoplastics materials. Unlike the latter, however, there is no need for the separate moulding of rectangular bars (80 mm × 10 mm × 4 mm, which should be taken from the central portion of the multipurpose test specimen) or for the moulding of small tensile bars (≥ 60 mm × 10 mm × 3 mm). Therefore the type B and type C iSO moulds specified in IsO 294 have not been included in this part of IsO 10724. Regardless of this, and to avoid confusion Iso 10724 consists of the following parts, under the general title Plastics - Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs): Part1:General principles and mouldingofmultipurposetest specimens Part 2: Small plates Annexes A to D of this part of ISO 10724 are for information only. @ISO1998 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 OrganizationforStandardization Case postale 56· CH-1211 Geneve 20 · Switzerland Internet [email protected] Printed in Switzerland @ ISO ISO 10724-1:1998(E) Introduction hence the measured values obtained when the specimens are used in a test method. The thermal and mechanical prepare the specimens. Exact definition of each of the main parameters of the moulding process is a basic It is important in defining moulding conditions to consider any influence the conditions may have on the properties to be determined. Thermosets may show differences in orientation and length of anisotropic fillers such as short fibres thermoplastics. Each of these phenomena must be controlled to avoid fluctuation of the numerical values of the measured properties. ili Copyright International Organization for Standardization Not for Resale