1、October 2012 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 87.040!$|b“1918963www.din.deDDIN EN ISO 2812-3Paints and varnishes Determination of resistance to liquids Part 3: Method using an absorbent medium (ISO 2812-3:2012);English version EN ISO 2812-3:2012,English translation of DIN EN ISO 2812-3:2012-10Beschichtungsstoffe Bestimmung der Bestndigkeit geg
3、en Flssigkeiten Teil 3: Verfahren mit einem saugfhigen Material (ISO 2812-3:2012);Englische Fassung EN ISO 2812-3:2012,Englische bersetzung von DIN EN ISO 2812-3:2012-10Peintures et vernis Dtermination de la rsistance aux liquides Partie 3: Mthode utilisant un milieu absorbant (ISO 2812-3:2012);Vers
4、ion anglaise EN ISO 2812-3:2012,Traduction anglaise de DIN EN ISO 2812-3:2012-10SupersedesDIN EN ISO 2812-3:2007-05 andDIN EN ISO 2812-3Corrigendum 1:2008-06www.beuth.deDocument comprises 14 pagesIn case of doubt, the German-language original shall be considered authoritative.09.12 DIN EN ISO 2812-3
5、:2012-10 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee
6、CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Bes
7、chichtungsstoffe und Beschichtungen. DIN EN ISO 2812 consists of the following parts, under the general title Paints and varnishes Determination of resistance to liquids: Part 1: Immersion in liquids other than water Part 2: Water immersion method Part 3: Method using an absorbent medium Part 4: Spo
8、tting methods Part 5: Temperature-gradient oven method The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1513 DIN EN ISO 1513 ISO 1514 DIN EN ISO 1514 ISO 2808 DIN EN ISO 2808 ISO 3270 DIN EN 23270 ISO 3696 DIN ISO 3696 ISO 4628-1 DIN EN
9、ISO 4628-1 ISO 4628-2 DIN EN ISO 4628-2 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN EN ISO 2812-3:2007-05 and DIN EN ISO 2812-3 Corrigendum 1:2008-06 as follows: a) the use of filter paper with a diameter of 36 mm is now permitted (see 4.4); b) depth filter sheets and labora
10、tory filter paper have been included as examples of suitable types of filter paper. Previous editions DIN 53168: 1969-02, 1971-04, 1982-03 DIN EN ISO 2812-1: 1994-10 DIN EN ISO 2812-3: 2007-05 DIN EN ISO 2812-3 Corrigendum 1: 2008-06 DIN EN ISO 2812-3:2012-10 3 National Annex NA (informative) Biblio
11、graphy DIN EN 23270, Paints, varnishes and their raw materials Temperatures and humidities for conditioning and testing DIN EN ISO 1513, Paints and varnishes Examination and preparation of test samples DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varn
12、ishes Determination of film thickness DIN EN ISO 4628-1, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation system DIN EN ISO 4628-2, Paints and varnish
13、es Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blistering DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN ISO 3696, Water for analytica
14、l laboratory use Specification and test methods DIN EN ISO 2812-3:2012-10 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2812-3 July 2012 ICS 87.040 Supersedes EN ISO 2812-3:2007English Version Paints and varnishes - Determination of resistance to liquids
15、 - Part 3: Method using an absorbent medium (ISO 2812-3:2012)Peintures et vernis - Dtermination de la rsistance aux liquides - Partie 3: Mthode utilisant un milieu absorbant (ISO 2812-3:2012) Beschichtungsstoffe - Bestimmung der Bestndigkeit gegen Flssigkeiten - Teil 3: Verfahren mit einem saugfhige
16、m Material (ISO 2812-3:2012) This European Standard was approved by CEN on 20 June 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lis
17、ts and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under
18、 the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yu
19、goslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROP
20、EN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2812-3:2012: EContents PageForeword .1 Scope 2 Normative references .3
21、 Principle .4 Apparatus and materials .5 Test substances .6 Sampling 7 Test panels 7.1 Substrate .7.2 Preparation and coating 7.3 Coating thickness .8 Procedure 8.1 Conditioning of the test panels .8.2 Test conditions .8.3 Determination .9 Evaluation 10 Precision 11 Test report .Annex A (informative
22、) Examples of test substances Bibliography .2EN ISO 2812-3:2012 (E) DIN EN ISO 2812-3:2012-10 344445555555555666810Foreword This document (EN ISO 2812-3:2012) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and va
23、rnishes” 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 January 2013, and conflicting national standards shall be withdrawn at the latest by January 2013.
24、 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2812-3:2007. According to the CEN/CENELEC Internal Re
25、gulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,
26、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 2812-3:2012 has been approved by CEN as a EN ISO 2812-3:2012 without any modification. 3EN I
27、SO 2812-3:2012 (E) DIN EN ISO 2812-3:2012-10 1 ScopeThis part of ISO 2812 specifies a method, using an absorbent medium, for determining the resistance of an individual-layer or multi-layer system of coating materials to the effects of liquids or paste-like products.This method enables the tester to
28、 determine the effects of the test substance on the coating and, if necessary, to assess the damage to the substrate.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe
29、rences, the latest edition of the referenced document (including any amendments) applies.ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 1514, Paints and varnishes Standard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 4628-1, Paint
30、s and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation systemISO 4628-2, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and s
31、ize of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blisteringISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling3 PrincipleA coated test panel is exposed to one or more test substances by using an absorbent medium. The effec
32、ts of the exposure are assessed in accordance with agreed criteria.4 Apparatus and materialsOrdinary laboratory equipment and the following:4.1 Heating cabinet, with artificial ventilation, for carrying out the test at temperatures up to 40 C and capable of maintaining the temperature to within 3 C.
33、WARNING To protect against explosion or fire, products containing volatile flammable substances should be handled with care. National regulations should be followed.4.2 Watch glasses, with a diameter of approximately 40 mm, curved in such a way that, when placed over a test area (see 8.3), the watch
34、 glass will not touch the filter paper or cotton wool swab, impregnated with the test liquid, on the test area.4.3 Petri dishes, with 60 mm diameter and 20 mm rim.4EN ISO 2812-3:2012 (E) DIN EN ISO 2812-3:2012-10 4.4 Filter paper, of a type that will not be affected by the test substance used, with
35、a diameter of approximately 25 mm or 36 mm.NOTE 1 So-called depth filter sheets (e.g. those used for polishing automotive paint coatings in laboratory testing) have been found suitable for this test. These sheets consist of a cellulose matrix containing a mixture of very fine kieselguhr and perlite
36、particles as the filtration-active substances.NOTE 2 For most purposes, laboratory filter paper with a thickness of 1,0 mm to 1,25 mm will be suitable.4.5 Cotton wool, lint-free and of a type that will not be affected by the test substance used. Cotton wool may be used instead of filter paper (4.4)
37、for the test and for cleaning the test panel at the end of the test period (see Clause 9).5 Test substancesOne or more test substances, as agreed between interested parties, shall be used. Examples of test substances are given in Annex A.6 SamplingTake a representative sample of the coating material
38、 to be tested, as described in ISO 15528.Examine and prepare the sample for testing, as described in ISO 1513.7 Test panels7.1 SubstrateUnless otherwise agreed, use test panels conforming to the requirements of ISO 1514, with dimensions of approximately 150 mm 100 mm and a thickness of 0,7 mm to 1,0
39、 mm.7.2 Preparation and coatingPrepare each test panel as described in ISO 1514 and then coat it by the agreed method with the product or system under test. Dry (or stove) and age (if applicable) each coated test panel for the specified time under the specified conditions.7.3 Coating thicknessDeterm
40、ine the dry-film thickness of the coating, in micrometres, using one of the non-destructive methods given in ISO 2808.8 Procedure8.1 Conditioning of the test panelsImmediately before testing, condition the test panels for at least 16 h under standard conditions as specified in ISO 3270, i.e. (23 2)
41、C and (50 5) % relative humidity.8.2 Test conditionsUnless otherwise specified, carry out the test at the standard temperature specified in ISO 3270, i.e. (23 2) C.8.3 DeterminationPerform the test in duplicate.5EN ISO 2812-3:2012 (E) DIN EN ISO 2812-3:2012-10 Place the test panel horizontally. When
42、 using liquid test substances, dip a filter paper or cotton wool swab into one of the test liquids and wait until the filter paper or cotton wool is thoroughly impregnated with the liquid. Take the filter paper or cotton wool swab out of the liquid and let excess liquid run off. Do not compress the
43、filter paper or cotton wool to remove excess liquid. Place the filter paper or cotton wool swab on the test panel.Repeat this procedure for each test liquid, making sure that the filter papers or cotton wool swabs do not touch one another and that the distance between the filter papers or cotton woo
44、l swabs and the edges of the panel is at least 10 mm. Then immediately cover the test areas with watch glasses or Petri dishes.When using highly viscous or paste-like test substances, apply about 0,5 cm3of each substance to the test panel, place a filter paper or cotton wool swab over the substance
45、and cover the test areas with Petri dishes.The test duration shall be agreed between the interested parties and should reflect the end use of the coating.When the test is performed at elevated temperatures, apply the agreed test substances and place the test panel in a heating cabinet for the agreed
46、 test period.9 EvaluationAt the end of the test period, remove the filter papers or cotton wool swabs and wipe the test panel with dry cotton wool. Clean off any dried residue of aqueous test substances under running water, and clean off any dried residue of other test substances with a solvent that
47、 does not attack the coating.Immediately assess the test panel for blistering, as specified in ISO 4628-2, relative to the non-exposed areas of the panel. Evaluate only the areas which have been in direct contact with a test substance. Rate any visible changes as specified in ISO 4628-1.Unless other
48、wise agreed, reassess the exposed areas after 24 h.Further tests on the exposed and non-exposed areas of the test panel may be performed (e.g. a cross-cut test or hardness test) to determine the changes resulting from the effects of the test substances.If the substrate, i.e. the surface of the test panel, is to be examined for visible changes, remove the coating in conformity with the specified procedure.If the results of the evaluation of the duplicate determination
