ISO-1888-2006.pdf
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1、INTERNATIONAL STANDARD ISO 1888 Third edition 2006-07-01 Reference number ISO 1888:2006(E) ISO 2006 Textile glass Staple fibres or filaments Determination of average diameter Verre textile Fibres discontinues et filaments Dtermination du diamtre moyen ISO 1888:2006(E) ii ISO 2006 All rights reserved
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5、006 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 either ISO at the address below or ISOs member body in the co
6、untry of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 1888:2006(E) ISO 2006 All rights reserved iii Foreword ISO (the International Organization for Standardizat
7、ion) 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 r
8、epresented 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 Standards
9、 are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internat
10、ional Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1888 was p
11、repared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement fibres. This third edition cancels and replaces the second edition (ISO 1888:1996), in which the minimum overall magnification required for the microscope specified in 2.2.1 and 3.2.1 has been reduce
12、d from to .500400 . iv -,-,- INTERNATIONAL STANDARDISO 1888:2006(E) ISO 2006 All rights reserved 1 Textile glass Staple fibres or filaments Determination of average diameter 1Scope This International Standard specifies longitudinal-profile and transverse-section methods for determining the average d
13、iameter (i.e. the average value of actual diameters) of staple fibres or filaments in a textile glass product. This diameter must not be confused with the nominal diameter which is used in the designation of yarns and materials manufactured from these yarns and corresponds to the average diameter bu
14、t rounded to the nearest whole number. 2Method A: Longitudinal profile 2.1Principle Fibres or filaments placed in a liquid medium having a refractive index differing from that of the textile glass are viewed in profile under a microscope and the diameter measured. 2.2Apparatus 2.2.1Microscope, equip
15、ped with the following: An eye-piece with a built-in micrometer graticule, the eye-piece and objective together giving an overall magnification of at least and preferably . The resolution of the microscope shall permit measurement to the nearest or better (see the Note). A system permitting lateral
16、and rotational movement of the microscope stage. An illumination system. NOTEThis system may be replaced by or used in conjunction with a microprojector on which specimens can be measured using a transparent scale (preferably a curved scale). The recommended type of microscope is one using plane-pol
17、arized light, and an illumination system with a Kohler light source and an Abbe condenser. A green filter may also be used to give better reading accuracy. 2.2.2Micrometer scale, with divisions, for calibration of the optical system. 2.2.3Glass slide (thickness: to ), and cover glass (thickness: to
18、). The thickness of the cover glass shall be verified periodically. 2.2.4Mounting fluid, with a refractive index different (but not too different) from that of the glass under examination. Benzyl alcohol, methyl salicylate, a mixture of one part glycerol and two parts water are adequate media. 2.2.5
19、Razor blade or scissors. 2.2.6Muffle furnace, capable of maintaining a temperature of . 4001 000 0,5m 0,01 mm 1,10 mm1,35 mm0,16 mm0,19 mm 625 C 25 C ISO 1888:2006(E) 2 ISO 2006 All rights reserved 2.3Procedure 2.3.1It is not always necessary to remove the size from the yarns under examination. Neve
20、rtheless, yarns in which the fibres or filaments do not separate from each other in the mounting fluid shall have the size removed by burning off to bare glass at in a muffle furnace (2.2.6). 2.3.2Set up the microscope (2.2.1) with the appropriate optical system and the moving stage. Calibrate the o
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