1、BRITISH STANDARD BS EN 1062-6:2002 Paints and varnishes Coating materials and coating systems for exterior masonry and concrete Part 6: Determination of carbon dioxide permeability The European Standard EN 1062-6:2002 has the status of a British Standard ICS 87.040 BS EN 1062-6:2002 This British Sta
2、ndard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 5 August 2002 BSI 5 August 2002 ISBN 0 580 40210 X National foreword This British Standard is the o
3、fficial English language version of EN 1062-6:2002. The UK participation in its preparation was entrusted by Technical Committee STI/28, Paint systems for non-metallic substrates, to Subcommittee STI/28/1, Masonry and emulsion paints, which has the responsibility to: A list of organizations represen
4、ted on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”
5、, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer
6、 immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate
7、 them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments
8、EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10626 July2002 ICS87.040 Englishversion PaintsandvarnishesCoatingmaterialsandcoatingsystems forexteriormasonryandconcretePart6:Determinationof carbondioxidepermeability PeinturesetvernisProduitsdepeintureetsystmesde revtementpourmaonnerieetbtonextrieu
9、rPartie6: Dterminationdelapermabilitaudioxydedecarbone BeschichtungsstoffeBeschichtungsstoffeund BeschichtungssystemefrmineralischeUntergrndeund BetonimAuenbereichTeil6:Bestimmungder KohlenstoffdioxidDiffusionsstromdichte(Permeabilitt) ThisEuropeanStandardwasapprovedbyCENon26March2002. CENmembersare
10、boundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. This
11、EuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Czec
12、hRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 200
13、2CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN10626:2002EEN 1062-6:2002 (E) Foreword This document EN 1062-6:2002 has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes“, the secretariat of which is held by DIN. This European S
14、tandard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2003, and conflicting national standards shall be withdrawn at the latest by January 2003. This European Standard was prepared jointly by CEN/TC 139, Paint
15、s and varnishes (Secretariat: DIN Deutsches Institut fr Normung e. V.) and CEN/TC 104/SC 8, Protection and repairs of concrete structures (Secretariat: DIN Deutsches Institut fr Normung e. V.), after considerable preparatory work by CEN/TC 139/WG 1 “Coating systems for masonry“ (Convenor: R. Michel,
16、 France) which had formed a Joint Group with CEN/TC 104/SC 8/WG 1 “Surface protection“ (Convenor: Dr. R. Stenner, Germany). EN 1062 consists of the following parts under the general title Paints and varnishes Coating materials and coating systems for exterior masonry and concrete: Part 1: Classifica
17、tion Part 2: Determination and classification of water-vapour transmission rate (permeability) 1) Part 3: Determination and classification of liquid-water transmission rate (permeability) Part 6: Determination of carbon dioxide permeability Part 7: Determination of crack-bridging properties Test met
18、hods and classification Part 11: Methods of conditioning before testing The annex A, B and C of this European Standard are normative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aust
19、ria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Introduction This is one of a number of Parts of EN 1062 dealing with test methods for coating materi
20、als and coating systems for exterior masonry and concrete. It should be read in conjunction with EN 1062-1. 1 Scope This European Standard specifies two methods for determining the carbon dioxide permeability of coatings, coating systems and related products, intended for exterior masonry and concre
21、te. The methods are applicable to coatings and coating systems on porous substrates such as plaster, concrete etc. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate pl
22、aces in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication re
23、ferred to applies (including amendments). EN 1062-1:1996, Paints and varnishes Coating materials and coating systems for exterior masonry - Part 1: Classification. EN 1062-11, Paints and varnishes Coating materials and coating systems for exterior masonry and concrete Part 11: Methods of conditionin
24、g before testing. EN ISO 15528, Paints and varnishes and raw materials for paints and varnishes Sampling (ISO 15528:2000). EN 23270:1991, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing (ISO 3270:1984). EN ISO 1513, Paints and varnishes Examinati
25、on and preparation of samples for testing (ISO 1513:1992). EN ISO 2808:1999, Paints and varnishes Determination of film thickness (ISO 2808:1997). 1) Published as EN ISO 7783-2. 2EN 1062-6:2002 (E) EN ISO 7783-1:1999, Paints and varnishes Determination of water-vapour transmission rate Part 1: Dish
26、method for free films (ISO 7783-1:1996, including Technical Corrigendum 1:1998). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 carbon dioxide permeability i amount of carbon dioxide in grams (g) that will diffuse in one day (d) thr
27、ough one square metre of the coating under the action of a defined partial pressure or difference in concentration. It is expressed in g/(m 2 d) 3.2 diffusion-equivalent air layer thickness s D thickness of a static air layer that possesses, under the same conditions, the same carbon dioxide permeab
28、ility as the coating. It is expressed in m 3.3 diffusion resistance number number indicating how many times more a coating is impermeable to carbon dioxide than a static air layer of the same thickness under the same conditions 4 Principle 4.1 Method A: Gravimetric method The coated side of a test p
29、iece is exposed to the measuring gas, and the diffused carbon dioxide is determined quantitatively. The test piece seals a test cell containing an absorbant for carbon dioxide so that the cell is gas-tight to the surroundings. The test cell is kept in a dry carbon dioxide/air atmosphere at (23 2) C
30、and weighed at regular intervals. The carbon dioxide permeability is calculated from the increase of mass. The determination is completed when a steady state is reached, i.e. when the increase of mass no longer changes with time. For control purposes, a reference film (standard) of known carbon diox
31、ide permeability is measured in each series of determinations. 4.2 Method B: Carrier gas method A coated test piece is clamped between two halves of a permeation cell and the two halves are made gas-tight to each other and to the surroundings. Through one half of the permeation cell the measuring ga
32、s passes, whilst through the other half a carrier gas stream (preferably nitrogen or air, free from carbon dioxide) passes. This carrier gas stream transports the diffused carbon dioxide to a detection system, based on infrared spectrometry or gas chromatography. The determination is carried out at
33、(23 2) C and is completed when a steady state is reached, i.e. when the carbon dioxide permeability no longer changes with time. Both gases (measuring gas and carrier gas) can be humidified as required. For control purposes, a reference film (standard) of known carbon dioxide permeability is measure
34、d in each series of determinations. Both methods are carried out isostatically, i.e. the test piece is not subjected to a difference in absolute pressure but to a difference in partial pressure. NOTE When using method A, only a dry carbon dioxide/air mixture can be used because the absorbent would r
35、eact with humidity from the measuring gas. Therefore, if the carbon dioxide permeability is to be known at a different humidity level, for example at 50 % relative humidity, only method B is suitable. 5 Apparatus and materials 5.1 For methods A and B 5.1.1 Carbon dioxide gas analyzer, for measuring
36、the carbon dioxide concentration of the measuring and carrier gases in the range 0 % to 20 % (V/V) carbon dioxide. 5.1.2 Device for measuring film thickness, suitable for measurements to a limit deviation of at least 3 % of the thickness of the substrate. 5.1.3 Barometer, for measuring the atmospher
37、ic pressure to a limit deviation of 400 Pa. 5.1.4 Measuring gas, containing (10 0,5) % (V/V) carbon dioxide, prepared by mixing 1 part by volume of carbon dioxide and 9 parts by volume of dry air. 5.1.5 Reference film (standard), of thickness (50 5) m, for use as a calibration film for the measureme
38、nt device.EN 1062-6:2002 (E) NOTE For the diffusion resistance number of the reference film which is commercially available by Polymer-Institut, Quellenstrae 3, D-65439 Flrsheim-Wicker, a value of = 1,75 10 6has been found, as a result of a comparative testing programme. 5.1.6 Sealing material. A wa
39、x material complying with the requirements of EN ISO 7783-1:1999, D.1.3 (see annex A) or two-component adhesives have been found suitable. 5.1.7 Substrate. For coatings not requiring a reaction with the substrate, any substrate is suitable which has a water-vapour transmission rate of not more than
40、240 g/(m d), for instance glass frites, unglazed ceramic tiles. The area shall be at least 60 cm for one side. 5.2 For method A only 5.2.1 Test chamber, consisting of a gas-tight vessel, equipped with a suitable device for circulating the measuring gas. A desiccator of volume about 20 l or a gas-tig
41、ht oven is suitable. 5.2.2 Test cells Dishes complying with the requirements of EN ISO 7783-1:1999, 7.1, are suitable. The dishes shall be resistant under the test conditions. A suitable test cell is shown in Figure 1. Dimensions in millimetres Key 1 Test piece 2 Absorbent Figure 1 Example of test c
42、ell 5.2.3 Balance, capable of weighing up to 400 g to 1 mg. 5.2.4 Absorbents a) Desiccant: Phophorus pentoxide with moisture indicator or a molecular sieve with indicator are suitable. b) Carbon dioxide absorbent: Sodium hydroxide on a support, granulated for elemental analysis, is suitable. 5.3 For
43、 method B only 5.3.1 Metal templates, for holding the test pieces, fitting to the permeation cell (5.3.2). Templates made of stainless steel sheet of thickness 1 mm, having a circular opening of diameter 90,5 mm, have been found suitable. 5.3.2 Permeation cell, made of impermeable material, preferab
44、ly of metal or glass, and consisting of two halves (schematic diagram see Figure 2). The two halves are each provided with an inlet and an outlet for the measuring gas and the carrier gas respectively. Permeation cells with a volume of 150 cm 3of each of the two halves are suitable. 4EN 1062-6:2002
45、(E) Key 1 Test specimen on template 2 Measuring gas: 10 % (V/V) CO 2 /90 % (V/V) N 2 3 Carrier gas: N 2or air a) Gas input b) Gas output Figure 2 Schematic diagram of permeation cell 5.3.3 System for gas analysis. Any measurement method that quantitatively determines carbon dioxide in nitrogen or ai
46、r is suitable. Recognized methods comprise infrared detection or gas-chromatographic methods. 5.3.4 Carrier gas. Nitrogen or air, dry and free from carbon dioxide, are suitable. 6 Sampling Take a representative sample of the product to be tested (or of each product in the case of a multi-coat system
47、), as described in EN ISO 15528. Examine and prepare each sample for testing, as described in EN ISO 1513. 7 Test pieces 7.1 Substrate If not otherwise agreed, use the substrate specified in 5.1.7. 7.2 Number and dimensions Prepare three test pieces for each determination. The diameter of the test p
48、iece shall be at least four times the thickness of the test piece. The surface area of the coating to be exposed shall be circular and shall be at least 60 cm 2 . 7.3 Preparation Coat the substrate and dry the coating in accordance with the manufacturers instructions. Condition the test pieces in accordance with EN 1062-11 prior to testing. The conditioning method shall be agreed between the interested parties and stated in the test report. Afterwards, either dry over desiccant (5.2
