ISO-10724-1-1998.pdf
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1、A Reference number ISO 10724-1:1998(E) INTERNATIONAL STANDARD ISO 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 Plastiques Moulage par injection d
2、prouvettes en compositions de poudre mouler (PMC) thermodurcissables Partie 1: Principes gnraux et moulage dprouvettes usages multiples Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19
3、/2007 22:26:16 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10724-1:1998(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 photocopyi
4、ng and microfilm, without permission in writing from the publisher. International Organization 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
5、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. Inte
6、rnational 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. Draft International Standards adopted by the technical co
7、mmittees 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 mate
8、rials. 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 mould for the production of the basic specimen types required for the a
9、cquisition of comparable test data. 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. As far as possible, the wording of this part of ISO 10724 and its definitions corresponds to that in its
10、counterpart 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 multip
11、urpose 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, the designation of the different mould types in this part
12、 of ISO 10724 and in ISO 294 correspond to each other. ISO 10724 consists of the following parts, under 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: Sm
13、all plates Annexes A to D of this part of ISO 10724 are for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 22:26:16 MDTNo reproduction or networking permitted
14、without license from IHS -,-,- ISOISO 10724-1:1998(E) iii Introduction Many factors in the injection-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 propertie
15、s of such specimens are in fact strongly dependent on the conditions of the moulding process used to 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
16、 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 and in curing. Residual (“frozen-in“) stresses in the moulded test specimens may also influ
17、ence properties. Due to the crosslinking of thermosets, molecular orientation is of less influence on mechanical 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 Organ
18、ization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 22:26:16 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS und
19、er license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 22:26:16 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 10724-1:1998(E) 1 Plastics Injection moulding of test specimens of thermosetting powder mould
20、ing compounds (PMCs) Part 1: General principles and moulding of multipurpose test specimens 1 Scope This part of ISO 10724 specifies the general principles to be followed when injection moulding test specimens of thermosetting powder moulding compounds (PMCs) and gives details of mould designs for p
21、reparing one type of specimen for use in establishing reproducible moulding conditions. Its purpose is to promote uniformity in describing the main parameters of the moulding process and also to establish uniform practice in reporting moulding conditions. The particular conditions required for the r
22、eproducible preparation of test specimens which will give comparable results will vary for each material used. These conditions are given in the International Standard for the relevant material or are to be agreed upon between interested parties. NOTE ISO round-robin tests with phenolic (PF), urea-f
23、ormaldehyde (UF), melamine (MF), melamine phenolic (MP) and unsaturated-polyester (UP) injection-moulding materials have shown that mould design is an important factor in the reproducible preparation of test specimens. 2 Normative references The following standards contain provisions which, through
24、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 subject to revision, and parties to agreements based on this part of ISO 10724 are encouraged to investigate the possibility of applying the most
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