1、BSI Standards PublicationBS ISO 18066:2015Textiles Manmade filamentyarns Determination ofshrinkage in boiling waterBS ISO 18066:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18066:2015.The UK participation in its preparation was entrusted to TechnicalCom
2、mittee TCI/24, Physical testing of textiles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards
3、 Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 79220 5ICS 59.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendment
4、s issued since publicationDate Text affectedBS ISO 18066:2015 ISO 2015Textiles Manmade filament yarns Determination of shrinkage in boiling waterTextiles Fils de filaments synthtiques Dtermination du retrait dans leau bouillanteINTERNATIONAL STANDARDISO18066First edition2015-04-01Reference numberISO
5、 18066:2015(E)BS ISO 18066:2015ISO 18066:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including ph
6、otocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09
7、47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 18066:2015ISO 18066:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus and materials 16 Test specimen 36.1 Sampling . 36.2 Preparation of the test specimen 36.3 Numbers of tes
8、ts 47 Test procedures . 47.1 Preconditioning and conditioning 47.2 Measuring the initial length of the test specimens 47.3 Boiling and drying treatment . 57.4 Measuring the length of the test specimens after treatment 58 Calculation and expression of the results 58.1 Calculation 58.2 Precision . 59
9、Test report . 5Annex A (informative) Precision experiment 7Bibliography 8 ISO 2015 All rights reserved iiiContents PageBS ISO 18066:2015ISO 18066:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo
10、rk 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. International organizations, governmental and non-governm
11、ental, 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.The procedures used to develop this document and those intended for its further maintenance are described in th
12、e ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possi
13、bility 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of
14、 patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as i
15、nformation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 38, Textiles, Subcommittee SC 23, Fibres and yarns.iv ISO 2015 All rights reservedBS ISO 18
16、066:2015Textiles Manmade filament yarns Determination of shrinkage in boiling water1 ScopeThis International Standard specifies a test method for the determination of the boiling water shrinkage of non-textured and textured multifilament yarns (made of polyester, polyamide, polypropylene, cellulose
17、fibre, etc.)Only automatic method is specified in this International Standard.This International Standard is applicable to manmade filament yarns of linear density less than 3 000 dtex.This International Standard is not applicable to partially oriented yarns.2 Normative referencesThe following docum
18、ents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of referenced document (including any amendments) applies.ISO 139, Textiles Standard atmo
19、spheres for conditioning and testingISO 3696, Water for analytical laboratory use Specification and test methods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1shrinkage in boiling waterdecrease in length of a specimen as a result of thermal tre
20、atment in boiling water, expressed as a percentage of its original length, which measured under tension before and after treatment4 PrincipleUnder specific condition, a test specimen is treated in boiling water. Shrinkage is calculated as variation in length, measured before and after treatment.5 Ap
21、paratus and materials5.1 Skein winding reela) Reel with a circumference of (1 000 2,5) mm, driven either automatically or manually.b) A traversing mechanism to avert overlapping while a number of skeins being wound at the same time.c) A tensioning device, to an accuracy of 10 %, maintaining tension
22、within the recommended limits.d) A device to count the turns of the reel, preferably warning or stopping winding automatically, just prior to the specified number of reel revolutions.e) A mechanism to reduce the reel circumference is advisable for easy removal of the skein.INTERNATIONAL STANDARD ISO
23、 18066:2015(E) ISO 2015 All rights reserved 1BS ISO 18066:2015ISO 18066:2015(E)5.2 Automatic shrinkage tester (see Figure 1).a) Automatically application of the specified tension, appliance to measure the length of the specimen and to calculate the shrinkage based on the length values.b) Resolution
24、of the length measurement is 0,05 mm .c) Fitted with a specimen holder, over 600 mm high, in which a number of skeins arranged and tested in succession. Each skein is applied with a 2,5 cN load, which remains throughout the whole testing procedure.1234Key1 specimen holder2 specimen3 2,5 cN load4 loa
25、ding apparatus and length measuring system5 force measuring systemFigure 1 Automatic shrinkage tester5.3 Boiling water containera) The utilizable space shall have a height of at least 600 mm and suitable width and depth to accommodate the specimen holder of the shrinkage tester in an upright positio
26、n, so as to make the specimens completely covered by boiling water during the thermal treatment.b) The temperature shall be adjustable to 100 C. The temperature variation from the set value shall not exceed 3 C.c) The specimen holder of the shrinkage tester should be fixed in boiling water container
27、.5.4 Ventilated oven, which meets the following requirements.a) The interior height shall be at least 600 mm, to accommodate the specimen holder in an upright position. The occupied space is not more than 80 % of the volume.2 ISO 2015 All rights reservedBS ISO 18066:2015ISO 18066:2015(E)b) A thermom
28、eter to measure and record the temperature in the vicinity of the specimens.c) Forced ventilation as to maintain the temperature to an accuracy of 3 C.5.5 Reagenta) Distilled water or grade 3 water in accordance with ISO 3696.b) Surfactant with wetting effect in concentration of 1 g/l.6 Test specime
29、n6.1 SamplingSampling shall be performed as follows:a) bulk laboratory sample shall be taken on demand;b) number of lot sample and laboratory sample are listed in Table 1.Table 1 Number of lot sample and laboratory sampleNumber of contain-ers in the consign-mentNumber of con-tainers in the first sel
30、ectionNumber of contain-ers taken for con-signment sampleNumber of pack-ages sampled from each containerNumber of pack-ages chosen for laboratory sample10 or less all all see note below 20 approx11 to 20 10 10 2 2021 to 40 20 10 2 20more than 40 40 20 1 20NOTE Take an equal number of packages from e
31、ach container. The number of packages for laboratory sample should be at least 20. If the consignment includes less than 20 packages, sample all of them. Packages that have been dampened, bruised, or opened during the transportation shall not be sampled.6.2 Preparation of the test specimen6.2.1 Disc
32、ard yarns on outer layer of the package in the laboratory samples. If test specimens are sampled from the same package, at least 5 m yarn should be discarded between each specimen.6.2.2 Lead the yarn through the tension device and fix the end on the clip of the reel. Smoothly reel the skein using a
33、uniform tension lower than the specific tension (calculated as ,Formula 2) and reel the specific turns (calculated as Formula 1). Cut the yarn close to the clip and tie two yarn ends together, without stretch. Remove the skein from the reel carefully and avoid tangling.nTTt=2(1)wheren number of turn
34、s, rounded to nearest whole number;Ttset linear density of the skein, expressed in dtex;T nominal linear density of the specimen, expressed in dtex. ISO 2015 All rights reserved 3BS ISO 18066:2015ISO 18066:2015(E)Table 2 Set linear density of the skeinNominal linear density of the speci-menSet linea
35、r density of the skein400 dtex 2 500 dtex400 dtex 3000 dtex 10 000 dtex6.3 Numbers of tests6.3.1 For bulk laboratory sample, the minimum number of specimens shall be 2 from each package and the total number of tests shall not be less than 20 for one lot.6.3.2 Batch laboratory sample shall contain at
36、 least 20 packages and each package is tested twice.7 Test procedures7.1 Preconditioning and conditioning7.1.1 The standard atmosphere for preconditioning, conditioning, and testing shall be as specified in ISO 139.7.1.2 Time for specimens to reach moisture equilibrium should be more than 2 h before
37、 treatment, and more than 4 h after treatment.7.2 Measuring the initial length of the test specimens7.2.1 Hang the skeins sequentially on the specimen holder of automatic shrinkage tester (see 5.2, Figure 1), while knots placed at the hook. Attach a tension load of 2,5 cN to the bottom of each skein
38、 so as to avoid entanglement and keep skein vertically downwards.7.2.2 Place the holder into the automatic shrinkage tester and set the tension according to Formula 2. After automatically applying and maintaining the tension for (30 1) s, auto-measure the straightened length L0of a skein, to an accu
39、racy of 0,1 mm.FPTt= (2)whereF tension, expressed in cN;P tension per unit linear density, expressed in cN/dtex; not-textured yarns, (0,05 0,005) cN/dtex, textured yarns, (0,20 0,02) cN/dtex.Ttset linear density of the skein, expressed in dtex. (see 6.2.2, Table 2)7.2.3 Repeat auto-loading and auto-
40、measuring procedures in sequence, until all skeins in the specimen holder have been tested.4 ISO 2015 All rights reservedBS ISO 18066:2015ISO 18066:2015(E)7.3 Boiling and drying treatment7.3.1 Fill the container with reagent specified in 5.5. The quantity of reagent shall be sufficient to make the s
41、pecimen holder completely immersed.7.3.2 Place the specimen holder with the specimens and tensioning weights into the boiling water container preheated to the required temperature. Maintain it vertically, immerse it completely in water and keep it there for (30 5) min.7.3.3 After treatment, take the
42、 specimen holder out carefully and let the water drip away for 10 min. Then place the specimen holder into the oven (specified in 5.4) at a temperature of (55 3) C for 30 min. If the specimens are not completely dry, extend the drying time accordingly. Afterwards, expose the specimens in standard at
43、mosphere to reach moisture equilibrium. Alternatively, the specimens may be just exposed in standard atmosphere, without oven-drying, to reach moisture equilibrium.NOTE Since the boiling point of water depends on the air pressure, the shrinkage in boiling water would change subject to air pressure.7
44、.4 Measuring the length of the test specimens after treatmentFollowing similar procedure in 7.2 to place the specimen holder into the automatic shrinkage tester and measure the straightened length L1of each skein to an accuracy of 0,1 mm.8 Calculation and expression of the results8.1 CalculationThe
45、shrinkage in boiling water is calculated according to Formula 3, be accurate to the first decimal place.BWSLLL=010100 (3)whereBWS shrinkage in boiling water, expressed in %;L0length before treatment, expressed in mm;L1length after treatment, expressed in mm.8.2 PrecisionSee Annex A.9 Test reportThe
46、test report shall include the following information:a) a reference to this International Standard, ISO 18066;b) all details necessary for the identification of the sample tested (including method of preparation, if applicable);c) testing conditions (temperature, boiling point of water, treatment tim
47、e, loading speed and tension);d) air pressure; ISO 2015 All rights reserved 5BS ISO 18066:2015ISO 18066:2015(E)e) test results (length of the test specimen before treatment, length of the test specimen after treatment and shrinkage in boiling water);f) any deviation, by agreement or otherwise, of th
48、e procedure specified;g) any unusual phenomenon observed.6 ISO 2015 All rights reservedBS ISO 18066:2015ISO 18066:2015(E)Annex A (informative) Precision experimentA.1 DescriptionEight laboratories participated in precision experiment, providing test results for five materials and each one tested twi
49、ce. Results are analysed according to ISO 5725-2:1994.A.2 RepeatabilityFollowing the test method specified in this International Standard, one operator tests identical specimens using the same apparatus in an appropriate short time.Calculate the difference of two test results of the same test specimen. The difference which is greater than repeatability as listed in Table A.1 shall not exceed once among 20 tests.A.3 ReproducibilityFollowing the test method specified in this International Standar
