ISO-10724-2-1998.pdf
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1、A Reference number ISO 10724-2:1998(E) INTERNATIONAL STANDARD ISO 10724-2 First edition 1998-11-15 Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 2: Small plates Plastiques Moulage par injection dprouvettes en compositions de poudre mouler (PMC)
2、thermodurcissables Partie 2: Petites plaques Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 02:31:29 MDTNo reproduction or networking permitted without license from IHS -,-,- IS
3、O 10724-2:1998(E) ISO 1998 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 Organizat
4、ion for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internet isoiso.ch Printed in Switzerland ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standard
5、s 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
6、part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International St
7、andard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 10724-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. Together with part 1, this part of ISO 10724 cancels and replaces ISO 10724:1994, wh
8、ich has been revised to improve the definition of the injection-moulding parameters and has been restructured to specify two types of ISO mould for the production of the basic specimen types required for the acquisition of comparable test data. Care has been taken to ensure that the ISO moulds descr
9、ibed can all be fitted in existing injection-moulding equipment and have interchangeable cavity plates. As far as possible, the wording of this part of ISO 10724 and its definitions corresponds to that in its counterpart for thermoplastic materials, ISO 294:1996, Plastics Injection moulding of test
10、specimens of thermoplastic 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) and the moulding of small tensile bars ( 60 mm 10 mm 3 mm). Therefore
11、the type B and type C ISO moulds specified in ISO 294 were not included in this part of ISO 10724. Regardless of this, and to avoid confusion, the designation of the different mould types in this part of ISO 10724 and in ISO 294 correspond to each other. ISO 10724 consists of the following parts, un
12、der the general title Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs): Part 1: General principles and moulding of multipurpose test specimens Part 2: Small plates Annexes A to D of this part of ISO 10724 are for information only. Copyright Internationa
13、l Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 02:31:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 10724-2:1998(E) iii Introduction Many factors in the injection
14、-moulding process which can influence the properties of moulded test specimens and hence the measured values obtained when the specimens are used in a test method. The thermal and mechanical properties of such specimens are in fact strongly dependent on the conditions of the moulding process used to
15、 prepare the specimens. Exact definition of each of the main parameters of the moulding process is a basic requirement for reproducible and comparable operating conditions. It is important in defining moulding conditions to consider any influence the conditions may have on the properties to be deter
16、mined. Thermosets may show differences in orientation of anisotropic fillers such as short fibres and in curing. Residual (“frozen-in“) stresses in the moulded test specimens may also influence properties. Due to the crosslinking of thermosets, molecular orientation is of less influence on mechanica
17、l properties than it is for thermoplastics. Each of these phenomena must be controlled to avoid fluctuation of the numerical values of the measured properties. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/99725450
18、01 Not for Resale, 04/21/2007 02:31:29 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 02:31:29 MDTNo re
19、production or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 10724-2:1998(E) 1 Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 2: Small plates 1 Scope This part of ISO 10724 specifies two two-cavity moulds, desig
20、nated the type D1 and type D2 ISO moulds, for the injection moulding of small plates measuring 60 mm 60 mm with preferred thicknesses of 1 mm (type D1) or 2 mm (type D2) which can be used for a variety of tests (see annex A). The moulds may additionally be fitted with inserts for studying the effect
21、s of weld lines on the mechanical properties (see annex B). 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 10724. At the time of publication, the editions indicated were valid. All standards are subje
22、ct to revision, and parties to agreements based on this part of ISO 10724 are encouraged to investigate the 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 472:1), Plastics Vo
23、cabulary. ISO 2577:1984, Plastics Thermosetting moulding materials Determination of shrinkage. ISO 6603-1: 2), Plastics Determination of puncture impact behaviour of rigid plastics Part 1: Non- instrumented impact test. ISO 6603-2: 3), Plastics Determination of puncture impact behaviour of rigid pla
24、stics Part 2: Instrumented impact test. ISO 10724-1:1998, Plastics Injection moulding of test specimens of thermosetting materials Part 1: General principles and moulding of multipurpose test specimens. 3 Definitions For the purposes of this part of ISO 10724, the definitions given in ISO 472 as wel
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