1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16105:2011Paints and varnishes Laboratory method fordetermination of release ofsubstances from coatings inintermittent contact withwaterBS EN 16105:2011 BRITISH STANDARDNat
2、ional forewordThis British Standard is the UK implementation of EN 16105:2011.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobtained on request to its secretary.This publication
3、does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 70903 6ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、theStandards Policy and Strategy Committee on 31 October 2011.Amendments issued since publicationDate Text affectedBS EN 16105:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16105 September 2011 ICS 87.040 English Version Paints and varnishes - Laboratory method for determination of releas
5、e of substances from coatings in intermittent contact 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 Subst
6、anzen aus Beschichtungen in intermittierenden Kontakt 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
7、without any alteration. Up-to-date lists 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 ot
8、her language made by translation under 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
9、, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NOR
10、MALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16105:2011: EBS EN 16105:2011EN 16105:2011 (E) 2 Contents Page Foreword 3Introducti
11、on .41 Scope 52 Normative references 53 Terms and definitions .54 Reagents .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
12、Glass or plastic bottles .86 Test procedure .86.1 General considerations .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 .
13、 107 Results . 107.1 Results in concentrations 107.2 Results in terms 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
14、Methods . 14B.5 Test results 14B.6 Assessment of the uncertainty . 15Bibliography . 16BS EN 16105:2011EN 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
15、 shall be given the status of a national standard, either by publication 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 doc
16、ument may be the subject of patent rights. CEN and/or CENELEC shall 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:
17、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, 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 King
18、dom. BS EN 16105:2011EN 16105:2011 (E) 4 Introduction Leaching 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 transferr
19、ed into the environment. BS EN 16105:2011EN 16105:2011 (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
20、 determined with this method. 2 Normative references 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) appli
21、es. EN 23270, Paints and varnishes and their raw materials 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 foll
22、owing terms and definitions apply. 3.1 substance single 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
23、more target substances may be defined. For example, biocides 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
24、of biocides is given in Annex I and IA of the Biocidal 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 applica
25、tion of a coating material to a substrate EN ISO 4618:2006 BS EN 16105:2011EN 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 s
26、pecimen body to be tested consisting of substrate 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. mill
27、igrams per square metre. 3.8 leaching release of substances 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
28、of test specimen to the leachant 3.10 immersion cycle 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
29、 the eluates of the two immersions 3.13 specific emission 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 te
30、st specimen in the leaching procedure NOTE Standard leachant as specified in 4.1. BS EN 16105:2011EN 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 equipmen
31、t specified in 5.2.1 to 5.2.6 before use for 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 mate
32、rial inert to the target substances in the eluates (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
33、 above (see Figure 1 b) the test surface shall 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 speci
34、men in the immersion container during the immersion process 5.2.2 Analytical balance Analytical balance, with an accuracy of 0,1 g. BS EN 16105:2011EN 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 de
35、termination Measuring cylinders for volume 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 elu
36、ate collection and preservation of merged 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 met
37、hod is described in this European Standard. 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 substra
38、te used to carry the coating shall have 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 substra
39、tes might influence the leaching (e.g. concrete, 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 Numbe
40、r and size of test specimens The tests shall 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
41、be used as control test specimen. BS EN 16105:2011EN 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 t
42、o identify it throughout the test. 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.
43、Absorptive substrates shall be sealed 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
44、 is recommended. 6.2.5 Conditioning 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 Per
45、form nine immersion cycles i, e.g. 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
46、 and dried prior to the first test. 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 b
47、e positioned in the containers (each 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
48、 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 eluates. BS EN 16105:2011EN 16105:2011 (E) 10 If the analysis cannot be achieved on the same day, store the merged eluates in a re
49、frigerator (+4 C) in the dark to reduce microbial activity, but not longer than 7 days. Alternatively, the merged eluates may be stored in a freezer at -10 C, but not longer than 30 days. NOTE The analysis of the merged eluates should be done depending on the stability of the individual substance and depending on the storage conditions which can be applied. Store the test specimens between the immersion cycles for a minimum of 42 h according to
