1、BS ISO23232:2009ICS 59.080.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTextiles Aqueousliquid repellency Water/alcohol solutionresistance testThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2
2、009. BSI 2009ISBN 978 0 580 64034 6Amendments/corrigenda issued since publicationDate CommentsBS ISO 23232:2009National forewordThis British Standard is the UK implementation of ISO 23232:2009.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/24, Physical testing of tex
3、tiles.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfr
4、om legal obligations.BS ISO 23232:2009Reference numberISO 23232:2009(E)ISO 2009INTERNATIONAL STANDARD ISO23232First edition2009-08-01Textiles Aqueous liquid repellency Water/alcohol solution resistance test Textiles Caractre hydrophobe Essai avec une solution eau/alcoolBS ISO 23232:2009ISO 23232:200
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8、OPYRIGHT PROTECTED DOCUMENT ISO 2009 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 be
9、low or ISOs member body in the country 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 ii ISO 2009 All rights reservedBS ISO 23232:2009ISO 23232:2009(E) ISO 2009 All
10、 rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 2 5 Uses and limitations. 2 6 Safety precautions 2 7 Reagents 2 8 Apparatus and materials 3 9 Test specimens . 3 10 Test procedure 3 11 Evaluation 4 12 Evaluation of results.
11、5 13 Test report . 5 Annex A (informative) Precision and bias . 6 Annex B (informative) Interlaboratory results. 8 Bibliography . 10 BS ISO 23232:2009ISO 23232:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of nation
12、al 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. Internatio
13、nal 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 are drafted in accordance with the rule
14、s 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 International Standard requires approval by at l
15、east 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 23232 was prepared by Technical Committee ISO/TC 3
16、8, Textiles, Subcommittee SC 2, Cleansing, finishing and water resistance tests. BS ISO 23232:2009INTERNATIONAL STANDARD ISO 23232:2009(E) ISO 2009 All rights reserved 1Textiles Aqueous liquid repellency Water/alcohol solution resistance test 1 Scope This International Standard provides a guide for
17、aqueous stain resistance. It can provide a rough index of aqueous stain resistance as, generally, the higher the aqueous liquid repellency grade, the better the resistance to staining by water/alcohol-based materials, especially water/alcohol-based liquids. This is particularly true when comparing v
18、arious finishes for a given substrate. This International Standard can also be utilized for determining if washing and/or dry-cleaning treatments have any adverse effects on the aqueous liquid repellency characteristics of a substrate. It is recommended that the washing and/or dry-cleaning treatment
19、 procedures described in ISO 6330 or ISO 3175 be used for this purpose. This International Standard is not intended to give an absolute measure of the resistance of the substrate to staining by water/alcohol-based substances. Other factors, such as the composition and viscosity of the water/alcohol-
20、based substances, substrate construction, fibre type, dyes and other finishing agents also influence stain resistance. This International Standard is not intended to estimate the resistance to penetration of the substrate by water/alcohol-based chemicals; for this evaluation, see ISO 6530. 2 Normati
21、ve references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 139, Textiles Standard atmosphe
22、res for conditioning and testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 grade textile testing symbol for any step of a multi-step standard reference scale for a quality characteristic NOTE A grade is assigned to test specimens exhibi
23、ting a degree of the quality comparable to that step of the standard reference scale. 3.2 aqueous repellency textiles characteristic of a fibre, yarn or fabric whereby it resists absorption by aqueous liquids BS ISO 23232:2009ISO 23232:2009(E) 2 ISO 2009 All rights reserved4 Principle Drops of stand
24、ard test liquids, consisting of a selected series of water/alcohol solutions with varying surface tensions, are placed on the substrate surface and then observed for absorption, wicking and contact angle. The aqueous repellency grade is the highest numbered test liquid which is not absorbed by the s
25、ubstrate surface. 5 Uses and limitations This test method is not intended to give an absolute measure of the resistance of the substrate to staining by all aqueous materials. Other factors, such as composition and viscosity of the aqueous substances, fabric construction, fibre type, dyes, other fini
26、shing agents, etc., also influence stain resistance. This test can, however, provide a rough index of aqueous stain resistance, in that, generally, the higher the Aqueous Solution Repellency Grade, the better the resistance to staining by aqueous materials, especially liquid aqueous substances. This
27、 is particularly true when comparing various finishes for a given substrate. 6 Safety precautions SAFETY PRECAUTIONS Good laboratory practices should be followed. Wear safety glasses and impervious gloves when handling test liquids in all laboratory areas. The alcohol specified in this method is fla
28、mmable. Keep it away from heat, sparks and open flame. Use it with adequate ventilation. Avoid prolonged inhalation of vapour or contact with skin. Do not take internally. Exposure to chemicals used in this procedure must be controlled at or below levels set by governmental authorities. These safety
29、 precautions are for information purposes only. The precautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the users responsibility to use safe and proper techniques in handling materials in this International Standard. Manufacturers should be consulted f
30、or specific details, such as material safety sheets and other manufacturers recommendations. 7 Reagents 7.1 Test liquids, prepared and numbered according to Table 1.1)The ratio of test liquids does affect the surface tension of the liquid. Use only analytical grades of test liquids. The surface tens
31、ion of the liquids should be checked every month or the liquids in the dropper bottles should be replaced every month from a sealed stock solution bottle, since the isopropyl alcohol concentration decreases due to evaporation. 1) Test liquids are available from CBM Group of N.C. Inc., 1308 N. Ellis
32、Ave., Dunn NC 28334 (Tel: +1 910-892-5701) or Textile Innovators Corp., Div. of SDL Atlas, 3934 Airway Dr., Rock Hill, SC 29732, USA; (Tel: +1 803-329-2110; Fax: +1 803-329-2133; ). This information is given for the convenience of the users of this document and does not constitute an endorsement by
33、ISO of the product named. Equivalent products may be used if they can be shown to lead to the same results. BS ISO 23232:2009ISO 23232:2009(E) ISO 2009 All rights reserved 3Table 1 Standard test liquids Aqueous Solution Repellency Grade Number Composition Surface tension at 25 C dyn/cm 0 None (fails
34、 98 % water solution test liquid) 1 98:2/Water:isopropyl alcohol (by volume) 59,0 2 95:5/Water:isopropyl alcohol (by volume) 50,0 3 90:10/Water:isopropyl alcohol (by volume) 42,0 4 80:20/Water:isopropyl alcohol (by volume) 33,0 5 70:30/Water:isopropyl alcohol (by volume) 27,5 6 60:40/Water:isopropyl
35、 alcohol (by volume) 25,4 7 50:50/Water:isopropyl alcohol (by volume) 24,5 8 40:60/Water:isopropyl alcohol (by volume) 24,0 8 Apparatus and materials 8.1 Dropping bottles. For convenience, it is desirable to transfer the test liquids from stock solutions to dropping bottles; each marked with the app
36、ropriate Aqueous Solution Repellency Grade Number. A typical system that is found to be useful consists of 60 ml dropping bottles with ground-in pipettes and neoprene bulbs. Standard dropping-bottle pipettes (medicine droppers) should deliver about 20 drops/ml. Prior to use, the bulbs should be soak
37、ed in heptane for several hours and then rinsed in fresh heptane to remove soluble substances. It has been found helpful to place the test liquids in sequential order in a wooden platform on the grading table. 8.2 White textile blotting paper 2), approximately (0,71 0,1) mm in thickness, (370 5%) g/
38、m2, and with an absorbent capacity of (220 30) %. 8.3 Laboratory gloves, general purpose. 9 Test specimens Test two specimens from each sample, approximately no smaller than 20 cm 20 cm and no larger than 20 cm 40 cm. The test specimen size should be chosen to represent all physical and colour chara
39、cteristics of the substrate and allow ample room for testing. Condition the test specimens for a minimum of 4 h prior to testing in accordance with ISO 139. 10 Test procedure 10.1 Place the first test specimen flat on the white textile blotting paper (8.2) on a smooth, horizontal surface with the fa
40、ce-side on top. Testing should be conducted in a standard atmosphere for testing in accordance with ISO 139. Testing should be completed within 30 min if test specimens are removed from a conditioning chamber. 2) White Textile Blotting Paper is the trade name of a suitable product supplied by AATCC,
41、 P.O. Box 12215, Research Triangle Park, NC 27709-2215, USA; (Tel: +1 919-549-8141; Fax: +1 919-549-8933; www.aatcc.org). This information is given for the convenience of the users of this International Standard and does not constitute an endorsement by ISO of the product named. Equivalent products
42、may be used if they can be shown to lead to the same results. BS ISO 23232:2009ISO 23232:2009(E) 4 ISO 2009 All rights reserved10.1.1 When evaluating open weave of “thin” substrates, place the test specimen on at least two layers of the substrate; otherwise, the test liquid may wet the underlying su
43、rface, not the actual test substrate, and thereby cause confusion in the reading of the results. 10.1.2 Equipment, benches and gloves should be free of silicon. 10.2 Wearing clean laboratory gloves (8.3), brush the pile of napped or pile substrates lightly with your hand in the direction giving the
44、greatest lay of the surface prior to depositing the drops of the test liquid. (This is the direction giving the lowest pile.) 10.3 Beginning with the lowest-numbered test liquid (Aqueous Solution Repellency Grade No. 1), carefully place small drops (approximately 5 mm in diameter or 0,05 ml volume)
45、on the test specimen in a minimum of three locations representing all physical and colour characteristics of the fabric. The drops should be approximately 4,0 cm apart. The dropper tip should be held at a height of approximately 0,6 cm from the substrate surface while depositing drops. Do not touch
46、the substrate with the dropper tip. Observe the drops for (10 2) s, from approximately a 45 angle. Assess each drop in accordance with Figure 1. 10.4 If no penetration or wetting of the substrate at the liquid-substrate interface and no wicking around the drops occur, place drops of the next higher-
47、numbered test liquid at an adjacent site on the substrate, so as not to interfere with the previous test, and again observe for (10 2) s. Assess each drop in accordance with Figure 1. 10.5 Continue this procedure until one of the test liquids shows obvious wetting or wicking of the substrate under o
48、r around the drop within (10 2) s. 10.6 Repeat the procedure with the second specimen. A third specimen may be required (see Clause 12). 11 Evaluation 11.1 The Aqueous Solution Repellency Grade of a substrate is the numerical value of the highest-numbered test liquid which will not wet the substrate
49、 within a period of (10 2) s. A grade of zero (0) is assigned when the substrate fails the 98 % water solution test liquid. Wetting of the substrate is normally evidenced by a darkening (greying/shadowing) of the substrate at the liquid-substrate interface or wicking and/or loss of the contact angle of the drop. On black or dark substrates, wetting can be detected by loss of “sparkle” within the drop. 11.2 Different types of wetting may be encountered depending on the finish, fibre, constr
