1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Coil coated metals Test methodsPart 27: Resistance to humid poultice (Cataplasm test)BS EN 1352327:2017National forewordThis British Standard is the UK implementation of BS EN 1352327:2017. It supersedes BS EN 1352327:2
2、009, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purpo
3、rt to include all the necessary provisions of a contract. Users are responsible for its correct application.ISBN 978 0 580 91550 5ICS 25.220.60Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Po
4、licy and Strategy Committee on 31 May 2017.Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARDBS EN 1352327:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1352327April 2017ICS 25.220.60 Supersedes EN 1352327:2009EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN
5、 DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCENCENELEC Management Centre: Avenue Marnix 17, B1000 Brussels 2017 CEN Ref. No. EN 1352327:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersCoil coated metals Test methods Part 27: Resistance to
6、humid poultice (Cataplasm test) Tles prlaques Mthodes dessai Partie 27 : Rsistance la corrosion sous cataplasme (essai au cataplasme) Bandbeschichtete Metalle Prfverfahren Teil 27: Bestndigkeit gegen feuchte Verpackung (KataplasmaTest) This European Standard was approved by CEN on 18 December 2016.C
7、EN 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. Uptodate lists and bibliographical references concerning such national standards may be obtained on appl
8、ication to the CENCENELEC 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 notified to the CEN-CENELEC Mana
9、gement 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 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia
10、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 1352327:2017 (E)European foreword 31 Scope . 52 Normative references 53 Terms and definitions . 54 Principle 55 Apparatu
11、s and materials 55.3 Specific solution. 56 Sample preparation . 67 Procedure. 77.1 Exposure . 77.2 Evaluation 78 Expression of results 78.1 Overall surface (flat test surface) 78.2 Edges 79 Test report . 7Bibliography 92Contents PageBS EN 1352327:2017EN 1352327:2017 (E)European forewordThis document
12、 (EN 1352327:2017) has been prepared by 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 a national standard, either by publication of an identical text or by endorsement, at the latest by October 2017,
13、 and conflicting national standards shall be withdrawn at the latest by October 2017.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document sup
14、ersedes EN 1352327:2009.The main changes are:a) the description of the buffer solution was amended;b) the text has been revised editorially and the normative references have been updated.The EN 13523 series, Coil coated metals Test methods, consists of the following parts: Part 0: General introducti
15、on Part 1: Film thickness Part 2: Gloss Part 3: Colour difference Instrumental comparison Part 4: Pencil hardness Part 5: Resistance to rapid deformation (impact test) Part 6: Adhesion after indentation (cupping test) Part 7: Resistance to cracking on bending (T-bend test) Part 8: Resistance to salt
16、 spray (fog) Part 9: Resistance to water immersion Part 10: Resistance to fluorescent UV radiation and water condensation Part 11: Resistance to solvents (rubbing test) Part 12: Resistance to scratching Part 13: Resistance to accelerated ageing by the use of heat Part 14: Chalking (Helmen method) Pa
17、rt 15: Metamerism Part 16: Resistance to abrasion Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam adhesion3BS EN 1352327:2017EN 1352327:2017 (E) Part 21: Evaluation of outdoor exposed panels Part 22:
18、 Colour difference Visual comparison Part 23: Resistance to humid atmospheres containing sulfur dioxide Part 24: Resistance to blocking and pressure marking Part 25: Resistance to humidity Part 26: Resistance to condensation of water Part 27: Resistance to humid poultice (Cataplasm test) Part 29: Re
19、sistance to environmental soiling (Dirt pick-up and striping)According to the CENCENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
20、 Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.4BS EN 1352327:2017E
21、N 1352327:2017 (E)1 ScopeThis part of the EN 13523 series specifies a procedure for evaluating the resistance of an organic coating on a metallic substrate (coil coating) in conditions of extreme humidity (acid, alkaline and/or neutral).2 Normative referencesThe following documents, in whole or in p
22、art, 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 the referenced document (including any amendments) applies.EN 135230, Coil coated metals Test methods Part 0
23、: General introductionEN ISO 46282, Paints and varnishes 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 (ISO 4628-2)EN ISO 46283, Paints and varnishes Evaluation of degrad
24、ation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Assessment of degree of rusting (ISO 4628-3)EN ISO 46285, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity
25、of uniform changes in appearance Part 5: Assessment of degree of flaking (ISO 4628-5)EN ISO 462810, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 10: Assessment of degree of filiform corr
26、osion (ISO 4628-10, Corrected version 2016-06-01)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN 13523-0 apply.4 PrincipleA test specimen is exposed to an enclosed humid environment for a pre-determined time, at a specified temperature. The test panel
27、is evaluated for any uniform or local change such as blistering or corrosion (e.g. red rust, white rust).5 Apparatus and materials5.1 Purified absorbent cotton-wool, single layer, of rectangular shape of about 250 mm 650 mm and weighing (22,5 2,5) g.5.2 Heat resistant and thermally sealable waterpro
28、of plastics bag and the relevant sealing equipment.The plastics bag can be made of polyethylene, for example, and should be at least 0,22 mm thick.5.3 Specific solution. For a neutral humid environment, deionised water with an electrical conductivity less than 0,5 mS/m (see also EN ISO 3696); for an
29、 acid humid environment, a standard buffer solution of pH 4; for an alkaline humid environment, a standard buffer solution of pH 9.5BS EN 1352327:2017EN 1352327:2017 (E)The composition of the standard buffer solutions shall be agreed prior to testing, because it may influence the test result. It sha
30、ll be stated in the test report.5.4 Oven, capable of maintaining a temperature of (70 3) C.6 Sample preparationFour test specimens, typically 75 mm 150 mm, are necessary for the material under test in each humid environment. They shall be flat and free from contamination. Sampling shall be performed
31、 according to EN 13523-0. If not otherwise specified, the edges of exposed panels shall be sheared with the burrs away from the test surface.Wrap the test specimens in the cottonwool as follows:Place the first two test specimens on the cotton-wool, with the test surface facing down (see Figure 1):Ke
32、y1 test specimens2 cottonwoolFigure 1 1st layerFold the cottonwool and place the last two test specimens, with the test surface facing up (see Figure 2):Figure 2 2nd layerFold the cottonwool over the last test specimens (see Figure 3):6 BS EN 1352327:2017EN 1352327:2017 (E)a) Top view b) Side viewKe
33、y1 test specimens2 coating to be testedFigure 3 3rd layerPlace the test specimens wrapped in the cottonwool in the plastics bag and add (270 5) g (i.e. 12 the mass of the cotton wool) of the solution (5.3). Carefully flatten the bag manually and seal it thermally in order to minimize losses.7 Proced
34、ure7.1 ExposurePreheat the oven to (70 3) C. Place the plastic bag with specimens horizontally inside the oven. Maintain the oven temperature at (70 3) C for the duration of the test (7 or 14 days, as agreed or specified), during which time the bag shall not be opened.7.2 EvaluationRemove the bag fr
35、om the oven and allow it to cool down to ambient temperature. Once cooled, open the bag as soon as possible. Remove the specimens and wipe away surface moisture with a soft tissue. Evaluate the specimens without further delay.8 Expression of results8.1 Overall surface (flat test surface)Inspect the
36、overall surface for blistering in accordance with EN ISO 46282.8.2 EdgesDescribe and measure the type of defect (blistering, white or red rust, flaking, filiform corrosion) in accordance with EN ISO 46282, EN ISO 46283, EN ISO 46285 and EN ISO 462810.9 Test reportThe test report shall contain at lea
37、st the following information:a) all details necessary to identify the product tested;b) a reference to this part of the EN 13523 series (EN 1352327);c) the applied test conditions (composition of standard buffer solutions);7BS EN 1352327:2017EN 1352327:2017 (E)d) the test duration;e) the results of
38、the test, as indicated in Clause 8;f) any deviation from the test procedure described;g) the date of the test.8 BS EN 1352327:2017EN 1352327:2017 (E)Bibliography1 EN 1396, Aluminium and aluminium alloys Coil coated sheet and strip for general applications Specifications2 EN 10169, Continuously organ
39、ic coated (coil coated) steel flat products Technical delivery conditions3 EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696)9BS EN 1352327:2017This page deliberately left blankBSI is the national body responsible for preparing British Standards and other stan
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