DIN EN 16105-2011 Paints and varnishes - Laboratory method for determination of release of substances from coatings in intermittent contact with water German version EN 16105 2011《.pdf

1、December 2011 Translation by DIN-Sprachendienst.English price group 11No 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).I

2、CS 87.040!$xY“1855491www.din.deDDIN EN 16105Paints and varnishes Laboratory method for determination of release of substances fromcoatings in intermittent contact with waterEnglish translation of DIN EN 16105:2011-12Beschichtungsstoffe Laborverfahren zur Bestimmung der Freisetzung von Substanzen aus

3、 Beschichtungen inintermittierendem Kontakt mit WasserEnglische bersetzung von DIN EN 16105:2011-12Peintures et vernis Mthode de laboratoire pour la dtermination de la libration de substances provenant derevtements en contact avec leau par intermittenceTraduction anglaise de DIN EN 16105:2011-12www.

4、beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises pages11.1118DIN EN 16105:2011-12 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, Working Grou

5、p WG 10 “Leaching of substances from coatings” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committees NA 002-00-15 AA Bautenbeschichtu

6、ngen and NA 002-00-15-01 AK Auswaschung von Substanzen aus Beschichtungen. 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16105 September 2011 ICS 87.040 English Version Paints and varnishes - Laboratory method for determination of release of substances from coatings in intermittent contact

7、with water Peintures et vernis - Mthode de laboratoire pour la dtermination de la libration de substances provenant de revtements en contact avec leau par intermittence Beschichtungsstoffe - Laborverfahren zur Bestimmung der Freisetzung von Substanzen aus Beschichtungen in intermittierenden Kontakt

8、mit Wasser This European Standard was approved by CEN on 13 August 2011. 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 bibliogra

9、phical 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 the responsibil

10、ity 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, France, Germany, Greece,

11、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any m

12、eans reserved worldwide for CEN national Members. Ref. No. EN 16105:2011: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG EN 16105:2011 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 Reag

13、ents .74.1 Standard leachant. .75 Apparatus .75.1 General 75.2 Equipment 75.2.1 Immersion container .75.2.2 Analytical balance75.2.3 Device for measuring 85.2.4 Measuring cylinders for volume determination 85.2.5 pH meter .85.2.6 Glass or plastic bottles .86 Test procedure .86.1 General consideratio

14、ns .86.2 Sample preparation .86.2.1 Substrate 86.2.2 Sampling .86.2.3 Number and size of test specimens.86.2.4 Preparation of the test specimens .96.2.5 Conditioning .96.3 Immersion method .96.3.1 Test procedure .96.3.2 Analysis . 107 Results . 107.1 Results in concentrations 107.2 Results in terms

15、of specific emissions 108 Test report . 11Annex A (informative) Forms for recording . 12Annex B (informative) Examples of data: Leaching of biocides . 14B.1 General . 14B.2 Sample preparation 14B.3 Test procedure 14B.4 Analytical Methods . 14B.5 Test results 14B.6 Assessment of the uncertainty . 15B

16、ibliography . 16DIN EN 16105:2011-12 EN 16105:2011 (E) 3 Foreword This document (EN 16105:2011) 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 publ

17、ication of an identical text or by endorsement, at the latest by March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. 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 sha

18、ll not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Den

19、mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 16105:2011-12 EN 16105:2011 (E) 4 Introduction Leachi

20、ng of substances from coatings into water needs to be quantified to enable an environmental risk assessment for the use of substances in coating materials. Substances can be leached from coatings, particularly by driving rain, and transferred into the environment. DIN EN 16105:2011-12 EN 16105:2011

21、(E) 5 1 Scope This European Standard specifies a laboratory method to determine the leaching behaviour of substances from coatings into water over defined time intervals. The release of substances from coatings under natural conditions cannot be determined with this method. 2 Normative references Th

22、e 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. EN 23270, Paints and varnishes and their raw materi

23、als Temperatures and humidities for conditioning and testing (ISO 3270:1984) EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling (ISO 15528:2000) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 substance single

24、 chemical element or compound, or a complex structure of compounds, that is contained in the coating and can potentially be extracted from the coating via water contact 3.2 target substance substances to be tested according to 6.3.2 NOTE One or more target substances may be defined. For example, bio

25、cides can be the target substances (see Annex B). 3.3 biocide additive added to a coating material to prevent organisms responsible for microbiological degradation from attacking a coating material or a film thereof EN ISO 4618:2006 NOTE A list of biocides is given in Annex I and IA of the Biocidal

26、Products Directive 98/8/EC (Directive 98/8/EC of the European Parliament and of the Council of 16 February 1998 concerning the placing of biocidal products on the market BPD). 3.4 coating continuous layer formed from a single or multiple application of a coating material to a substrate EN ISO 4618:2

27、006 DIN EN 16105:2011-12 EN 16105:2011 (E) 6 3.5 coating material product, in liquid, paste or powder form, that, when applied to a substrate, forms a film possessing protective, decorative and/or other specific properties EN ISO 4618:2006 3.6 test specimen body to be tested consisting of substrate

28、with coating 3.7 emission release of substances from a coating, which pass through the external surface of the coating under specific conditions into the environment NOTE The emission is expressed in units of released mass per surface area, i.e. milligrams per square metre. 3.8 leaching release of s

29、ubstances from a coating, which pass through the external surface of the coating under specific conditions into water NOTE The leaching is expressed in units of released mass per surface area, i.e. milligrams per square metre. 3.9 immersion exposure of test specimen to the leachant 3.10 immersion cy

30、cle i sequence consisting of 1 h immersion, 4 h drying and 1 h immersion NOTE i is the running number of immersion cycles.3.11 eluate solution obtained by one immersion 3.12 merged eluate solution obtained at a specific immersion cycle, consisting of the eluates of the two immersions 3.13 specific e

31、mission E released mass of a target substance from a coating through the surface during a specific immersion cycle NOTE The unit is mass per surface area, i.e. milligrams per square metre. 3.14 leachant liquid that is brought into contact with the test specimen in the leaching procedure NOTE Standar

32、d leachant as specified in 4.1. DIN EN 16105:2011-12 EN 16105:2011 (E) 7 4 Reagents 4.1 Standard leachant. Deionised water with a pH-value of (6 1) and a water temperature of (23 2) C shall be used. 5 Apparatus 5.1 General Check the materials and equipment specified in 5.2.1 to 5.2.6 before use for

33、proper operation and absence of interfering elements that might affect the results of the test. The equipment specified in 5.2.2 to 5.2.5 shall also be calibrated. 5.2 Equipment 5.2.1 Immersion container The container for immersion shall be made of a material inert to the target substances in the el

34、uates (e.g. glass, PTFE coated). The immersion container shall be large enough to allow the test specimens to have the coated face completely exposed to water and contain 25 l water per square metre exposed face. The water column below (see Figure 1 a) or above (see Figure 1 b) the test surface shal

35、l be 10 mm. NOTE For example, a test specimen of 100 cm2requires 250 ml water. Dimensions in millimetresa) water column below b) water column above Key 1 substrate 2 coating 3 immersion container 4 leachant Figure 1 Possible orientations of the test specimen in the immersion container during the imm

36、ersion process 5.2.2 Analytical balance Analytical balance, with an accuracy of 0,1 g. DIN EN 16105:2011-12 EN 16105:2011 (E) 8 5.2.3 Device for measuring Device for measuring sample dimensions, with an accuracy of 1 mm. 5.2.4 Measuring cylinders for volume determination Measuring cylinders for volu

37、me determination, with 1 % accuracy. 5.2.5 pH meter pH meter, with an accuracy of 0,05. 5.2.6 Glass or plastic bottles Glass or plastic bottles, e.g. glass, HDPE, PMMA, PTFE, PE, PET, PP, PVC. Use bottles with an appropriate volume, and with screw cap, for eluate collection and preservation of merge

38、d eluates. 6 Test procedure 6.1 General considerations Coatings are exposed under natural weather conditions to intermittent cycles of wetting (rainfall, thaw, condensate) and drying. To assess the leaching of substances from coatings, a wetting and drying method is described in this European Standa

39、rd. For this purpose, samples with coatings are immersed into water and dried in time intervals. The water from each immersion cycle i is analysed to determine the concentration ciof leached target substances. 6.2 Sample preparation 6.2.1 Substrate The substrate used to carry the coating shall have

40、a homogeneous planar surface, shall be inert and coatings shall adhere well to it during the immersion in water. As the substrate can influence the results, it shall be stated in the test report. NOTE Examples of inert substrates are XPS and EPS. Other substrates might influence the leaching (e.g. c

41、oncrete, mineral renders and fibre cement board and wood substrates). 6.2.2 Sampling Take a representative sample of the coating material, as described in EN ISO 15528. The sampling and conditioning procedure should be recorded in a sampling report 6.2.3 Number and size of test specimens The tests s

42、hall be performed with at least two replicate test specimens containing target substances and with one control test specimen with the same coating, but without target substances. If the coating without target substances is not available only the substrate can be used as control test specimen. DIN EN

43、 16105:2011-12 EN 16105:2011 (E) 9 The test with the control test specimen may be stopped if no background signal has been determined after the second immersion cycle. Test specimens shall have a minimum surface area of 100 cm2. Each test specimen shall be marked to identify it throughout the test.

44、6.2.4 Preparation of the test specimens The substrate shall be clean and dry. The substrate shall be coated with the coating material in the specified quantity in accordance with the recommendations of the manufacturer. Determine and record the total mass applied. Absorptive substrates shall be seal

45、ed on the reverse side and the edges against penetration of water. For example, two coats of a two-component coating material based on epoxy resin, overlapping the test surface by 5 mm but not more than 10 mm may be applied. A thixotropic coating system for sealing is recommended. 6.2.5 Conditioning

46、 Condition the test specimens at minimum for 7 days with freely circulating air at (23 2) C and (50 5) % relative humidity according to EN 23270 without UV influence or according to the requirements of the manufacturer. 6.3 Immersion method 6.3.1 Test procedure Perform nine immersion cycles i, e.g.

47、on day 1, 3, 5, 8, 10, 12, 15, 17 and 19. Each immersion cycle i consists of: 1 h immersion, 4 h drying at (23 2) C and (50 5) % relative humidity and 1 h immersion. Carry out the immersion at a water temperature of (23 2) C. The immersion container shall be washed and dried prior to the first test.

48、 The required volume of water (e.g. 250 ml per 100 cm2) shall be added. Fresh deionised water shall be used for each immersion. Determine and record the pH-value. Determine and record the mass of each specimen before each immersion cycle. The test specimens shall be positioned in the containers (eac

49、h test specimen in a separate container) in a way that free contact of water to the coated surface is allowed. The immersion container shall be covered to avoid evaporation of water during the immersion. Test specimens shall be removed from the immersion containers for drying. Merge the eluates of the two immersions of one immersion cycle i for the analysis of the target substances. Determine and record the pH-values of the merged eluate