ISO-10548-2002.pdf
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1、INTERNATIONAL STANDARD ISO 10548 Second edition 2002-07-15 Reference number ISO 10548:2002(E) ISO 2002 Carbon fibre Determination of size content Fibres de carbone Dtermination du taux densimage ISO 10548:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typef
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4、ized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no
5、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 either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postal
6、e 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ISO 10548:2002(E) ISO 2002 All rights reserved iii Contents Page 1Scope . 1 2Normative reference . 1 3Terms and definitions 1 4Principle 1 5Test specimens . 2 6Conditionin
7、g 2 7Test methods 2 7.1Method A: Solvent extraction . 2 7.2Method B: Digestion with sulfuric acid and hydrogen peroxide . 4 7.3Method C: Decomposition by pyrolysis 7 8Precision . 8 9Test report 8 ISO 10548:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Stand
8、ardization) 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
9、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 (IEC) on all matters of electrotechnical standardization. International St
10、andards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. 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
11、 casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 10548 was prepared by Technical Committee I
12、SO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement fibres. This second edition cancels and replaces the first edition (ISO 10548:1994), which has been technically revised. -,-,- INTERNATIONAL STANDARDISO 10548:2002(E) ISO 2002 All rights reserved 1 Carbon fibre Determination of siz
13、e content 1Scope This International Standard specifies test methods for the determination of the size content of carbon fibre yarn. It is applicable to continuous-filament yarns and staple-fibre yarns. 2Normative reference The following normative document contains provisions which, through reference
14、 in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, this publication do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most
15、recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1886:1990, Reinforcement fibres Sampling plans applicable to r
16、eceived batches 3Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 size any material applied to fibres to facilitate the handling and use of the fibres 3.2 size content mass of the size expressed as a percentage of the sized carbon
17、fibre yarn 4Principle Test specimens are weighed before and after removal of the size by one of the following three methods: method A: size removal by Soxhlet extraction, to be used when the size is completely soluble in a suitable solvent; method B: size removal by chemical digestion using a mixtur
18、e of sulfuric acid and hydrogen peroxide, used when the size is partially hardened and not completely soluble in solvents; method C: size decomposition by pyrolysis at high temperature in an atmosphere of nitrogen, used when the size is completely removed by pyrolysis. Methods A and B require the la
19、st weighing to be made to constant mass by repetition of the final drying and weighing procedure. In those cases where known materials are being tested regularly, it is permitted to define, by experiment, a minimum time for drying which will ensure that constant mass has been reached. Particular car
20、e may be required if the carbon fibre or sizing is water-absorbent. -,-,- ISO 10548:2002(E) 2 ISO 2002 All rights reserved 5Test specimens Two test specimens or more shall be taken from each lot or yarn sample. The size content is taken as the average of the two or more determinations. If the determ
21、ination is carried out for the purpose of lot acceptance, the lot received shall be sampled in accordance with ISO 1886. When handling test specimens, gloves shall be worn or tweezers used to avoid damage to the specimens. NOTEThe specification or the person requiring the test may stipulate that add
22、itional determinations be carried out at different places within the elementary unit. 6Conditioning Elementary units and yarn samples shall be allowed to attain laboratory temperature before testing. Before weighing the yarn, it shall be dried if required. 7Test methods 7.1Method A: Solvent extracti
23、on 7.1.1Apparatus and materials 7.1.1.1Balance, accurate to , readable to . 7.1.1.2Hot-air oven, capable of being controlled to . 7.1.1.3Desiccator, containing a suitable desiccant, for example silica gel, anhydrous calcium chloride or phosphorous pentoxide. 7.1.1.4Soxhlet extractor, capacity, with
24、a flask. 7.1.1.5Soxhlet extraction thimbles, measuring . NOTEThe sizes of the Soxhlet extractor, the flask and the Soxhlet extraction thimbles are given as an indication only and may be varied to suit individual requirements. IMPORTANT The extraction and all handling of organic solvents should be ca
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