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1、BRITISH STANDARD BS EN ISO 11998:2001 BS 3900-F17: 1998 Incorporating Amendment No. 1 to BS 3900-F17:1998 (renumbers the BS as BS EN ISO 11998:2001) and Incorporating Corrigendum No. 1 Paints and varnishes Determination of wet-scrub resistance and cleanability of coatings The European Standard EN IS
2、O 11998:2001 has the status of a British Standard ICS 87.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11998:2001 This British Standard, having been prepa
3、red under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 October 1998 BSI 18 January 2002 ISBN 0 580 30576 7 National foreword This British Standard is the official English language version of EN ISO
4、 11998:2001. It is identical with ISO 11998:1998. The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enqui
5、ries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The Brit
6、ish Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A Britis
7、h Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front
8、cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 9, the annex ZA page, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issue
9、d since publication Amd. No.DateComments 1328101 October 2001 Implementation of the European Standard 13580 Incorp. Corr. No. 1 18 January 2002 Incorporating annex ZA Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EU
10、ROPENNE EUROPISCHE NORM EN ISO 11998 August 2001 ICS 87.040 English version Paints and varnishes Determination of wet-scrub resistance and cleanability of coatings (ISO 11998:1998) Peintures et vernis Dtermination de la rsistance au frottement humide et de laptitude au nettoyage des revtements (ISO
11、11998:1998) Beschichtungsstoffe Bestimmung der Naabriebbestndigkeit und der Reinigungsfhigkeit von Beschichtungen (ISO 11998:1998) This European Standard was approved by CEN on 29 June 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
12、giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member This European Standard exists in three official vers
13、ions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cz
14、ech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Management Centre:
15、Rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national MembersRef. No. EN ISO 11998:2001 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11998:2001 BS
16、I 18 January 2002 CORRECTED 2001-09-19 Foreword The text of the International Standard from Technical Committee ISO/TC 35, Paints and varnishes, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 139, Paints and varnis
17、hes, the Secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2002, and conflicting national standards shall be withdrawn at the latest by February 2002. A
18、ccording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Port
19、ugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 11998:1998 has been approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). Licens
20、ed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11998:2001 ii BSI 18 January 2002 Contents Page Foreword iii 1 Scope 1 2 Normative re
21、ferences 1 3 Definitions 1 4 Principle 1 5 Reagents 2 6 Apparatus 2 7 Sampling 2 8 Procedure 2 9 Expression of results 3 10 Precision 4 11 Test report 5 Annex A (normative) Determination of non-volatile density of coating 8 Figure 1 Scrub pad holder 6 Figure 2 Test panel clamping arrangement 7 Figur
22、e 3 Mounting of abrasive-pad holder 7 Figure A.1 Location of test areas 9 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11998:2001 BSI 18 January 2002 iii Foreword ISO (the International Organization for Standardization) is a worldw
23、ide 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 represented on th
24、at 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. Draft International Standards adopted b
25、y 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 casting a vote. International Standard ISO 11998 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommitt
26、ee SC 9, General test methods for paints and varnishes. Annex A forms an integral part of this International Standard. Descriptors: Paints, varnishes, coatings, washing, cleaning, scrubbing, tests, determination, wear resistance, test equipment. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20
27、 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11998:2001 BSI 18 January 2002 1 1 Scope The ability of coatings to withstand wear caused by repeated cleaning operations an
28、d to resist permanent blemishing by stains is an important consideration both from a practical point of view and when comparing and rating such coatings. This International Standard specifies an accelerated method for the determination of wet-scrub resistance. With regard to the cleanability of coat
29、ings, only the method itself and not the soiling agents are specified. NOTESince these properties depend not only on the quality of a coating but also on the substrate, the method of application, the drying conditions and other factors, the results obtained are not directly transferable to actual pr
30、actice. In this standard the evaluation of the coating is based on a defined substrate, a fixed application method, specified drying conditions and a defined method of wet scrubbing. 2 Normative references The following standards contain provisions which, through reference in this text, constitute p
31、rovisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the sta
32、ndards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1512:1991, Paints and varnishes Sampling of products in liquid and paste form. ISO 1513:1992, Paints and varnishes Examination and preparation of samples for testing. ISO 2808:1997, Pain
33、ts and varnishes Determination of film thickness. ISO 3270:1984, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing. ISO 3696:1987, Water for analytical laboratory use Specification and test methods. 3 Definitions For the purposes of this Internatio
34、nal Standard, the following definitions apply. 3.1 cleanability the ability of a dry coating film to withstand penetration by soiling agents and to be freed from them through the cleaning process without removing more than a defined film thickness 3.2 scrub cycle one reciprocal movement of the scrub
35、 pad over the full stroke length in both directions 3.3 stroke length the total distance, end to end, traversed by the scrub pad in a scrub testing machine 3.4 wet-scrub resistance the ability of a dry coating film to sustain less than a specified loss in film thickness, averaged over a defined area
36、, when exposed to 200 wet-scrub cycles 4 Principle The test coating is applied to a test panel using a film applicator at the specified gap clearance. After drying and conditioning, the coated panel is weighed and subjected to 200 wet-scrub cycles in a scrub testing machine. It is then washed, dried
37、 and weighed again to determine its loss in mass, from which the mean loss in film thickness is calculated. For the determination of cleanability, soiling agents are applied to similarly prepared coated panels. The soiling agents specified are left in contact with the coating film for a specified ti
38、me. The coated, soiled panels are then subjected to 200 wet-scrub cycles. Through comparison of the mean loss in film thickness with a specified value, as agreed between interested parties, the coating can be rated in wet-scrub resistance classes. When the applied soiling agent is observed to be rem
39、oved and the coating is wet-scrub resistant, the coating is said to be cleanable in terms of the soiling agent used. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:01:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11998:2001 2 BSI 18 January 2002 5 Reagents 5.1 Washing liquid Use a
40、2,5 g/l solution of sodium n-dodecylbenzenesulfonate in water of grade 3 purity as defined in ISO 3696. The solution shall be allowed to stand before use until all air-bubbles and foam have dissipated. 5.2 Soiling agents The soiling agents and manner of application shall be agreed between the intere
41、sted parties. 6 Apparatus 6.1 Test panel,1) made of PVC film free of migration-susceptible chemical plasticizers, of sufficient rigidity to ensure a flat surface, impervious to and unaffected by water or aliphatic organic solvents and of nominal thickness 0,25 mm, 430 mm long and not less than 80 mm
42、 wide. Other types of plastic film may be used where the coating contains solvent which may adversely affect the PVC film. If the coating delaminates before or during the test, another, more suitable substrate shall be used. 6.2 Film applicator (preferably an automatic film applicator), used at an a
43、pplication speed of 10 mm/s to 15 mm/s and fitted with a doctor blade with an appropriate gap clearance and a gap width of at least 60 mm. 6.3 Wet-scrub tester apparatus: a reciprocating scrub testing machine with an effective stroke length of (300?5) mm and operating at approximately (37?2) scrub c
44、ycles per minute shall be used. A counter for recording the number of scrub cycles shall be provided. 6.4 Scrub pad holder,2) consisting of a metal plate fitted with pins to hold the abrasive pad. A mounting device with elongated holes is loosely fitted on the top of the plate (see Figure 1). The ma
45、ss of the scrub pad holder and the supporting mechanism which exerts a downward force on the test panel shall be (135?1) g. 6.5 Abrasive pad,3) of non-woven plastic material, with embedded abrasive, measuring (90?0,5) mm ? (39?0,5) mm. A new abrasive pad shall be used for every test. 6.6 Analytical
46、balance, shielded from draughts, capable of weighing the test panel with applied coating to an accuracy of 1 mg. 6.7 Straight-edge ruler, with 0,5 mm divisions. 7 Sampling Take a representative sample of the coating to be tested, as described in ISO 1512. Examine and prepare the sample, as described in ISO 1513. 8 Procedure 8.1 Film application 8.1.1 Using the film applicator, make a draw-down of the prepared sample of coating material on the test panel to achieve an even film at least 10 mm longer than the stroke length (see 3.3). Ensure the gap clearance is sufficient that the resultin