1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1096-2:2012Glass in building CoatedglassPart 2: Requirements and test methods forclass A, B and S coatingsBS EN 1096-2:2012 BRITISH STANDARDNational forewordThis British St
2、andard is the UK implementation of EN 1096-2:2012. Itsupersedes BS EN 1096-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/520/1, Basic and transformed glass products.A list of organizations represented on this committee can beobtained on reque
3、st to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 75085 4ICS 81.040.20Compliance with a British Sta
4、ndard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2012.Amendments issued since publicationDate Text affectedBS EN 1096-2:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1096-2 J
5、anuary 2012 ICS 81.040.20 Supersedes EN 1096-2:2001English Version Glass in building - Coated glass - Part 2: Requirements and test methods for class A, B and S coatings Verre dans la construction - Verre couche - Partie 2: Exigences et mthodes dessai pour les couches de classes A, B et S Glas im Ba
6、uwesen - Beschichtetes Glas - Teil 2: Anforderungen an und Prfverfahren fr Beschichtungen der Klassen A, B und S This European Standard was approved by CEN on 3 December 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
7、opean Standard the status of a national standard 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 versio
8、ns (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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, B
9、elgium, 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, Turkey and United Kingdom. EU
10、ROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1096-2:2012: EBS EN 1096-2
11、:2012EN 1096-2:2012 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53 Terms and definitions .54 Requirements .55 Samples and test pieces .75.1 Preparation .75.1.1 Coated annealed glass 75.1.2 Thermally treated coated glass 75.1.3 Coated toughened or heat strengthened glass 85.2 Storag
12、e 85.3 Marking .86 Initial evaluation of test pieces .86.1 Preparation .86.2 Visual inspection .86.3 Spectrophotometric measurements 86.3.1 Coated annealed glass 86.3.2 Toughened or heat strengthened coated glass 97 Duration of the tests 98 Test methods 98.1 General 98.2 Positioning of test pieces i
13、n the test cabinets 109 Final evaluation of test pieces . 119.1 General . 119.2 Cleaning . 119.3 Visual Inspection 129.4 Spectrophotometric measurements . 129.4.1 Coated annealed glass . 129.4.2 Thermally treated coated glass . 1210 Test report . 13Annex A (normative) Special procedures for thermall
14、y treated coated glass . 15A.1 General . 15A.2 Samples and test pieces for chemical and abrasion tests 15A.3 Spectrophotometric measurements . 15A.3.1 Samples and test pieces for spectrophotometric measurements . 15A.3.2 Procedures 15Annex B (normative) Determination of the condensation resistance .
15、 17B.1 General . 17B.2 Procedure 17B.3 Test cabinet . 17Annex C (normative) Determination of the resistance to acid 19C.1 General . 19C.2 Procedure 19C.3 Test cabinet . 19Annex D (normative) Determination of the resistance to neutral salt spray 21BS EN 1096-2:2012EN 1096-2:2012 (E) 3 D.1 General . 2
16、1D.2 Apparatus . 21D.2.1 Spray cabinet . 21D.2.2 Heater and temperature control . 21D.2.3 Spraying device . 21Annex E (normative) Determination of resistance to abrasion . 22E.1 General . 22E.2 Apparatus . 22E.2.1 General . 22E.2.2 Metal finger 22E.2.3 Abrasive felt . 22E.3 Test piece . 23E.4 Test p
17、rocedure . 23Annex F (normative) Criteria to demonstrate equivalence of coatings 25F.1 General . 25F.2 Composition of coatings 25F.3 Previous test reports . 25F.4 Evaluation. 25F.5 Examples 25Annex G (informative) Summary of test report 27Bibliography 29BS EN 1096-2:2012EN 1096-2:2012 (E) 4 Foreword
18、 This document (EN 1096-2:2012) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by NBN. 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 Ju
19、ly 2012, and conflicting national standards shall be withdrawn at the latest by July 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 shall not be held responsible for identifying any or all such patent rig
20、hts. This document supersedes EN 1096-2:2001. The main changes compared to the previous edition are: reference to the future EN 1096-5, Test method and classification for the Self-cleaning performances of coated glass surfaces; the introduction of a method to deal with toughenable / heat strengthena
21、ble and to be toughened / to be heat strengthened coated glass, see Annex A. 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,
22、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1096-2:2012EN 1096-2:2012 (E) 5 1 Scope Thi
23、s European Standard specifies requirements and test methods related to artificial weathering and abrasion of coatings on glass for use in buildings. These tests are aimed at evaluating the resistance of the coating to attack by simulated natural weathering conditions as well as to abrasion. This att
24、ack can be considered as representative of that which could be found on the external and/or internal face of the glazing. This European Standard applies to Class A, B and S coatings, as described in EN 1096-1. 2 Normative references The following referenced documents are indispensable for the applic
25、ation 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 410, Glass in Building Determination of luminous and solar characteristics of glazing EN 1096-1:2012, Glass in bu
26、ilding Coated glass Part 1: Definitions and classification. EN 12898, Glass in building Determination of emissivity 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1096-1 apply. 4 Requirements The coated glass complying with this European Standard sha
27、ll respect the requirements related to the different characteristics given in Table 1. BS EN 1096-2:2012EN 1096-2:2012 (E) 6 Table 1 Requirements Characteristics Test Method Requirements Visual Inspection Spectrophotometric measurements Condensation resistance Annex B - No defect, as defined in EN 1
28、096-1, greater than 3 mm length - Maximum one defect between 2 mm and 3 mm length - Maximum five defects between 1 mm and 2 mm length In addition, no scratches, staining of the coating or clusters of pinholes greater than 1 mm shall be allowed (see EN 1096-1). When compared with the reference test p
29、iece, in both reflection and transmission, there shall be no significant colour change. This observation shall be made within 20 sa. The transmittance measured at 550 nm and 900 nm shall differ by no more than 0,03 from the corresponding measured value on the reference test piece. For a glass claime
30、d to have a low emissivity coating the reflectance at 8 m shall decrease by no more than 0,02. Acid resistance Annex C No requirements Neutral salt spray resistance Annex D - No defect, as defined in EN 1096-1, greater than 3 mm length - Maximum one defect between 2 mm and 3 mm length - Maximum five
31、 defects between 1 mm and 2 mm length In addition, no scratches, staining of the coating or clusters of pinholes greater than 1 mm shall be allowed (see EN 1096-1). When compared with the reference test piece, in both reflection and transmission, there shall be no significant colour change. This obs
32、ervation shall be made within 20 sa. Abrasion resistance Annex E No requirement other than to ensure that the abraded area is uniform Total (diffuse plus direct) transmittance measured at 550 nm and 900 nm shall differ by no more than 0,05 from the corresponding value measured for the reference test
33、 piece. aThe time for observation is fixed to 20 s in order to have a reference period which can influence the visual inspection. BS EN 1096-2:2012EN 1096-2:2012 (E) 7 5 Samples and test pieces 5.1 Preparation 5.1.1 Coated annealed glass A sample of 300 mm x 300 mm is needed for each test. For the t
34、hree chemical durability tests, the test pieces are obtained by cutting the sample as shown in Figure 1. The abrasion test is undertaken on a 300 mm x 300 mm test piece. It is recommended that a spare sample be supplied in the event of one sample not being defect free. Key 1. test pieces 2. referenc
35、e test piece for visual inspection 3. reference test piece for spectrophotometric measurement Figure 1 Plan for cutting a sample into test pieces 5.1.2 Thermally treated coated glass For the thermally treated coated glass, defined in EN 1096-1:2012, 3.1.8 to 3.1.11, as the test pieces cannot be cut
36、from test samples, a special procedure has to be employed to obtain the test pieces (see Annex A). BS EN 1096-2:2012EN 1096-2:2012 (E) 8 5.1.3 Coated toughened or heat strengthened glass Use coated annealed glass samples for testing this type of coated glass. 5.2 Storage The test pieces shall be sto
37、red inside a room at a temperature of (23 5) C with a relative humidity less than 80 %. Storage shall prevent dust, chemicals or condensation reacting with the test pieces. The test pieces shall not be stored for more than three months before performing the test. 5.3 Marking The test pieces shall be
38、 marked on the uncoated glass surface. The following information shall be marked: manufacturers coating reference test pieces number 1 to 4 code for test Glasses with coating on both surfaces shall be marked without damaging the coating. The two reference test pieces shall be marked as the test piec
39、es plus “ref“. 6 Initial evaluation of test pieces 6.1 Preparation All test pieces shall be cleaned with demineralised water and with a soft tissue. Drying shall also be done with a soft tissue. If necessary this cleaning procedure can be repeated. 6.2 Visual inspection The test pieces shall be subj
40、ected to a visual inspection under an artificial sky in accordance with EN 1096-1. The inspection shall take place in both transmission and reflection. The test pieces shall be observed at a distance of 600 mm. All test pieces shall be defect free. No scratches or pinholes shall be observed. If a te
41、st piece contains defects it shall be replaced. NOTE The replacement of test pieces is to avoid any misinterpretation of the testing results. 6.3 Spectrophotometric measurements 6.3.1 Coated annealed glass A measurement sample shall be cut from the centre of the reference test piece. The actual size
42、 shall be dependent on the type of equipment being used for the measurements. The transmittance of the measurement sample shall be measured with radiation of normal incidence at the following wavelengths: 550 nm (representative wavelength for light and solar transmittance); 900 nm (representative wa
43、velength for solar transmittance). For glass claiming to have a low emissivity coating a measurement of the reflectance shall be made at 8 m using radiation of nearly normal incidence. BS EN 1096-2:2012EN 1096-2:2012 (E) 9 6.3.2 Toughened or heat strengthened coated glass As the measurement sample c
44、annot be cut from the reference test piece, a special procedure has to be employed to make the measurement (see Annex A). 7 Duration of the tests The durations of the tests are set out in Table 2. Table 2 Duration of the tests Test Test duration for class A B S Condensation resistance Acid resistanc
45、e Neutral salt spray Abrasion resistance 21 days 5 cycles 21 days 500 strokes 4 days 1 cycle 10 days 50 strokes 14 days 5 cycles a 500 strokes aThe neutral salt spray test is excluded for Class S coatings as they are subject to frequent cleaning in the applications for which theyare used in accordan
46、ce with EN 1096-1. 8 Test methods 8.1 General The coated glass complying to this part of the European Standard shall pass the tests given in Annexes B, C, D and E which are designed to verify the chemical and mechanical characteristics of the coating. The tests are as follows: condensation resistanc
47、e test (see Annex B) acid resistance test (see Annex C) neutral salt spray test (see Annex D) abrasion resistance test (see Annex E) These tests are evaluated by their effect on the visual quality of the product and its spectrophotometric properties. Whilst it would be feasible to evaluate the spect
48、rophotometric properties across the entire spectrum, a number of representative wavelengths have been selected. These wavelengths represent transmission of light and energy, together with reflectance relating to emissivity, where appropriate. BS EN 1096-2:2012EN 1096-2:2012 (E) 10 Each test shall be
49、 carried out without interruption. The only exception is the acid resistance test which can be interrupted after each cycle. However, any interruption shall not exceed three days. Testing shall start as soon as possible after the test pieces have been cleaned. The exception is the abrasion resistance test where testing shall commence within 30 min of the test piece being cleaned. Care shall be take
