1、May 2007DEUTSCHE NORM English price group 7No part of this standard 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 87.040!,y-g“9861068www.din.
2、deDDIN EN ISO 2812-2Paints and varnishes Determination of resistance to liquids Part 2: Water immersion method (ISO 2812-2:2007)English version of DIN EN ISO 2812-2:2007-05Beschichtungsstoffe Bestimmung der Bestndigkeit gegen Flssigkeiten Teil 2: Verfahren mit Eintauchen in Wasser (ISO 2812-2:2007)E
3、nglische Fassung DIN EN ISO 2812-2:2007-05SupersedesDIN EN ISO 2812-2:1995-01www.beuth.deDocument comprises 11 pages 08.07DIN EN ISO 2812-2:2007-05 2 National foreword This standard falls within the responsibility of Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany).
4、It is identical with International Standard ISO 2812-2 which was prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Nor
5、menausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Technical Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 2812 consists of the following parts, under the general title Paints and varnish
6、es 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: Spotting methods Part 5: Temperature-gradient oven method The DIN Standards corresponding to the International Standards referred t
7、o in clause 2 of the EN are as follows: ISO 1513 DIN EN ISO 1513 ISO 1514 DIN EN ISO 1514 ISO 2808 DIN EN ISO 2808 ISO 3696 DIN ISO 3696 ISO 4628-2 DIN EN ISO 4628-2 ISO 15528 DIN EN ISO 15528 ISO 15711 DIN EN ISO 15711 ISO 17872 DIN EN ISO 17872 Amendments This standard differs from DIN EN ISO 2812
8、-2:1995-01 as follows: a) Conditioning of the coated test pieces after drying (or stoving) and ageing has been deleted. b) If agreed between the interested parties, a scribe or artificial holiday may now be applied to the coating (see 6.4). c) The number of determinations has been reduced from three
9、 to two. d) The purity of water has been changed from grade 2 to grade 3. e) The standard has been editorially revised to bring it into line with the other parts of the DIN EN ISO 2812 standards series. Previous editions DIN EN ISO 2812-2: 1995-01 DIN EN ISO 2812-2:2007-05 3 National Annex NA (infor
10、mative) Bibliography DIN EN ISO 1513, Paints and varnishes Examination and preparation of samples for testing DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varnishes Determination of film thickness DIN EN ISO 4628-2, Paints and varnishes Evaluation of
11、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 EN ISO 15711, Paints and varnishes Determinati
12、on of resistance to cathodic disbonding of coatings exposed to sea water DIN EN ISO 17872, Paints and varnishes Guidelines for the introduction of scribe marks through coatings on metallic panels for corrosion testing DIN ISO 3696, Water for analytical laboratory use Specification and test methods D
13、IN EN ISO 2812-2:2007-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2812-2 January 2007 ICS 87.040 Supersedes EN ISO 2812-2:1994 English Version Paints and varnishes - Determination of resistance to liquids - Part 2: Water immersion method (ISO 2812-2
14、:2007) Peintures et vernis - Dtermination de la rsistance aux liquides - Partie 2: Mthode par immersion dans leau (ISO 2812-2:2007) Beschichtungsstoffe - Bestimmung der Bestndigkeit gegen Flssigkeiten - Teil 2: Verfahren mit Eintauchen in Wasser (ISO 2812-2:2007) This European Standard was approved
15、by CEN on 23 December 2006. 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 lists and bibliographical references concerning such national st
16、andards may be obtained on application to the CEN 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 the responsibility of a CEN member into its own language and notifie
17、d to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
18、 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of explo
19、itation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2812-2:2007: EContents Page Foreword1 Scope . 2 Normative references . 3 Principle. 4 Apparatus 5 Sampling 6 Test panels 7 Procedure 8 Evaluation 9 Precision 10 Test report . 2 EN ISO 2812-2:2007 (E) 55
20、 66774445. 3Foreword This document (EN ISO 2812-2:2007) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This European Standard shall be given the status of
21、a national standard, either by publication of an identical text or by endorsement, at the latest by July 2007, and conflicting national standards shall be withdrawn at the latest by July 2007. This document supersedes EN ISO 2812-2:1994. According to the CEN/CENELEC Internal Regulations, the nationa
22、l standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
23、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 2812-2:2007 has been approved by CEN as EN ISO 2812-2:2007 without any modifications. 3EN ISO 2812-2:2007 (E) 1 Scope This part of ISO 2812 specifies a method for determining
24、 the resistance of an individual-layer or multi-layer system of coating materials to the effects of water by partial or full immersion. This method enables the determination of the effects of water on the coating and, if necessary, the assessment of the damage to the substrate. 2 Normative reference
25、s 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 1513, Paints and varnishes Examination and
26、preparation of samples for testing ISO 1514, Paints and varnishes Standard panels for testing ISO 2808, Paints and varnishes Determination of film thickness ISO 3696, Water for analytical laboratory use Specification and test methods ISO 4628-2, Paints and varnishes Evaluation of degradation of coat
27、ings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blistering ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling ISO 15711, Paints and varnishes Determination of resistance to cathodic disb
28、onding of coatings exposed to sea water ISO 17872, Paints and varnishes Guidelines for the introduction of scribe marks through coatings on metallic panels for corrosion testing 3 Principle A coated test panel is immersed in water and the effects of immersion are evaluated by criteria agreed in adva
29、nce between the interested parties, these criteria usually being of a subjective nature. 4 EN ISO 2812-2:2007 (E) 4 Apparatus All parts of the apparatus in contact with water shall be made from inert materials. Ordinary laboratory equipment and the following apparatus: 4.1 Tank, of suitable size, fi
30、tted with a cover, a heater and thermostatic control. A convenient size of tank is 700 mm 400 mm 400 mm. 4.2 System for circulation and aeration of water, or a means for stirring, used in conjunction with a source of dry, oil-free, pressurized air. If a pump is used, it shall be of a suitable capaci
31、ty to agitate the whole contents of the tank. 4.3 Support for the test panels, made from material that is electrically non-conducting, and arranged so that the panels are maintained at an angle of 15 to 20 to the vertical, with the test surface uppermost, and with their plane parallel to the directi
32、on of flow of water in the tank. The panels shall be at least 30 mm apart, situated at least 30 mm from the bottom of the tank and at least 30 mm from the walls of the tank. Their positions shall be changed periodically, either mechanically or by hand. 5 Sampling Take a representative sample of the
33、coating material to be tested, in accordance with ISO 15528. Pretest each sample in accordance with ISO 1513 and prepare it for further testing. 6 Test panels 6.1 Materials and dimensions Unless otherwise specified or agreed, the test panels shall be of burnished steel complying with ISO 1514, and o
34、f approximate dimensions 150 mm 100 mm and a thickness of 0,7 mm to 1,0 mm. 6.2 Preparation and coating Prepare each test panel as described in ISO 1514, and then coat it by the specified method with the product or system under test. Both sides should preferably be coated and the edges protected. It
35、 should be agreed whether the reverse side of the panel will be protected with a sufficiently resistant coating, or whether both sides of the panel will be coated with the coating material under test. 6.3 Drying and conditioning Dry (or stove) and age (if applicable) each coated test panel for the s
36、pecified time under the specified conditions. The test procedure shall be carried out as soon as possible. 6.4 Artificial damaging If agreed between the interested parties, apply a scribe to the coating, as specified in ISO 17872, or an artificial holiday, as specified in ISO 15711. 5 EN ISO 2812-2:
37、2007 (E) 6.5 Coating thickness Determine the dry film thickness of the coating, in micrometres, using one of the non-destructive methods specified in ISO 2808. 7 Procedure 7.1 Number of determinations Carry out the test in duplicate, unless otherwise agreed. 7.2 Determination Add sufficient water (s
38、ee the following paragraph) to the tank (4.1) such that the test panels, when positioned on the support (4.3), are immersed for three-quarters of their length. If specified, commence the circulation and aeration of the water (4.2) in the tank. Unless otherwise agreed, adjust the temperature of water
39、 to (40 1) C and maintain this temperature throughout the test. Water conforming to the requirements of grade 3 of ISO 3696 should be used. Depending upon the end use of the coating, other grades of water may be used, for example natural or artificial seawater. Test pieces can either be partially or
40、 fully immersed. If partial immersion is required, the test pieces should be immersed for three-quarters of their length. If full immersion is required, the test pieces should be immersed such that the water level is a minimum of 50 mm above the top of the test piece to avoid waterline oxygen concen
41、tration difference effects. Place the test panels in the tank for the specified period, rearranging them at regular intervals of not more than 3 days. If water of grade 3 of ISO 3696 is used, replace the test water if at any time during the test it becomes turbid or coloured or its conductivity exce
42、eds 2 mS/m, or if the oxygen content falls below 5 mg/l. 8 Evaluation 8.1 Interim inspections For interim inspections during the test period, if specified, remove each panel from the tank at the appropriate time(s) and dry the panels by blotting with absorbent paper. Within 1 min of drying, examine
43、the panels for blistering in accordance with ISO 4628-2, or other signs of deterioration, and immediately return them to the tank. 8.2 Final inspection At the end of the specified test period, remove each panel from the tank and dry the panels by blotting with absorbent paper. Within 1 min of drying
44、, examine the whole test surface of each panel for blistering as described in ISO 4628-2, or for other signs of deterioration of the coating. Assessment of the change of adhesion may also be carried out at this stage. Allow the panels to stay at room temperature for 24 h and examine the test surface
45、 again for loss of adhesion, rust staining, change of colour, embrittlement or other characteristics which may be specified. If specified, carefully remove a 150 mm 50 mm strip from the test surface with a non-corrosive paint remover and examine the exposed metal for signs of corrosion. For referenc
46、e purposes, protect the exposed area by a suitable transparent lacquer. 6 EN ISO 2812-2:2007 (E) If the results of the evaluation of the duplicate determinations for blistering or other signs of deterioration differ significantly, repeat the determination, again in duplicate. Report the results of a
47、ll determinations, including any repeat determinations. 9 Precision No details are currently available for the repeatability limit (r) and reproducibility limit (R). 10 Test report The test report shall contain at least the following information: a) all information necessary for identification of th
48、e coating examined, including the manufacturer, trade name, batch number, etc.); b) a reference to this International Standard (ISO 2812-2:2006); c) details of the test panels, including: 1) the material (including thickness) and surface pretreatment of the substrate; 2) the application method for a
49、pplying the sample coating to the substrate, including the drying time and drying conditions for all layers; where applicable, ageing conditions before the test; 3) the dry film thickness of the coating, in micrometres, including the measuring method chosen in ISO 2808; d) details of the method used, including: 1) the duration of the test; 2) whether the test piece was fully or partially immersed and, if partially, the immersion depth; 3) the temperature of the water; 4) the time between judgement
