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 Itsupersedes BS EN 1096-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/520/1, Basic and transformed glass products.A list of organizations represented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 4g31 Scope 5g32 Normative references 5g33 Terms and definitions .5g34 Requirements .5g35 Samples and test pieces .7g35.1 Preparation .7g35.1.1 Coated annealed glass 7g35.1.2 Thermally treated coated glass 7g35.1.3 Coated toughened or heat strengthened
12、 glass 8g35.2 Storage 8g35.3 Marking .8g36 Initial evaluation of test pieces .8g36.1 Preparation .8g36.2 Visual inspection .8g36.3 Spectrophotometric measurements 8g36.3.1 Coated annealed glass 8g36.3.2 Toughened or heat strengthened coated glass 9g37 Duration of the tests 9g38 Test methods 9g38.1 G
13、eneral 9g38.2 Positioning of test pieces in the test cabinets 10g39 Final evaluation of test pieces . 11g39.1 General . 11g39.2 Cleaning . 11g39.3 Visual Inspection 12g39.4 Spectrophotometric measurements . 12g39.4.1 Coated annealed glass . 12g39.4.2 Thermally treated coated glass . 12g310 Test repo
14、rt . 13g3Annex A (normative) Special procedures for thermally treated coated glass . 15g3A.1 General . 15g3A.2 Samples and test pieces for chemical and abrasion tests 15g3A.3 Spectrophotometric measurements . 15g3A.3.1 Samples and test pieces for spectrophotometric measurements . 15g3A.3.2 Procedure
15、s 15g3Annex B (normative) Determination of the condensation resistance . 17g3B.1 General . 17g3B.2 Procedure 17g3B.3 Test cabinet . 17g3Annex C (normative) Determination of the resistance to acid 19g3C.1 General . 19g3C.2 Procedure 19g3C.3 Test cabinet . 19g3Annex D (normative) Determination of the
16、resistance to neutral salt spray 21g3BS EN 1096-2:2012EN 1096-2:2012 (E) 3 D.1 General . 21g3D.2 Apparatus . 21g3D.2.1 Spray cabinet . 21g3D.2.2 Heater and temperature control . 21g3D.2.3 Spraying device . 21g3Annex E (normative) Determination of resistance to abrasion . 22g3E.1 General . 22g3E.2 Ap
17、paratus . 22g3E.2.1 General . 22g3E.2.2 Metal finger 22g3E.2.3 Abrasive felt . 22g3E.3 Test piece . 23g3E.4 Test procedure . 23g3Annex F (normative) Criteria to demonstrate equivalence of coatings 25g3F.1 General . 25g3F.2 Composition of coatings 25g3F.3 Previous test reports . 25g3F.4 Evaluation. 2
18、5g3F.5 Examples 25g3Annex G (informative) Summary of test report 27g3Bibliography 29g3BS EN 1096-2:2012EN 1096-2:2012 (E) 4 Foreword 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
19、 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 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 docum
20、ent may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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 f
21、or the Self-cleaning performances of coated glass surfaces; the introduction of a method to deal with toughenable / heat strengthenable 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
22、the following countries are bound to implement this European Standard: 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, Roman
23、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1096-2:2012EN 1096-2:2012 (E) 5 1 Scope This European Standard specifies requirements and test methods related to artificial weathering and abrasion of coatings on glass for use in buildings. These tests are aim
24、ed at evaluating the resistance of the coating to attack by simulated natural weathering conditions as well as to abrasion. This attack 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 a
25、nd S coatings, as described in EN 1096-1. 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 amend
26、ments) applies. EN 410, Glass in Building Determination of luminous and solar characteristics of glazing EN 1096-1:2012, Glass in building Coated glass Part 1: Definitions and classification. EN 12898, Glass in building Determination of emissivity 3 Terms and definitions For the purposes of this doc
27、ument, the terms and definitions given in EN 1096-1 apply. 4 Requirements The coated glass complying with this European Standard shall 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 M
28、ethod Requirements Visual Inspection Spectrophotometric measurements Condensation resistance Annex B - 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 defects between 1 mm and 2 mm length In addition, no scratches, stainin
29、g 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 observation shall be made within 20 sa. The transmittance measured at 550 n
30、m and 900 nm shall differ by no more than 0,03 from the corresponding measured value on the reference test piece. For a glass claimed 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 Ann
31、ex 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 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). Whe
32、n compared with the reference test piece, in both reflection and transmission, there shall be no significant colour change. This observation 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) transm
33、ittance measured at 550 nm and 900 nm shall differ by no more than 0,05 from the corresponding value measured for the reference test 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
34、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 three 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
35、. It is recommended that a spare sample be supplied in the event of one sample not being defect free. Key 1. test pieces 2. reference 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 treate
36、d 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 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
37、strengthened glass Use coated annealed glass samples for testing this type of coated glass. 5.2 Storage The test pieces shall be stored 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 pie
38、ces. The test pieces shall not be stored for more than three months before performing the test. 5.3 Marking The test pieces shall be 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 c
39、oating on both surfaces shall be marked without damaging the coating. The two reference test pieces shall be marked as the test pieces 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 b
40、e done with a soft tissue. If necessary this cleaning procedure can be repeated. 6.2 Visual inspection The test pieces shall be subjected 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
41、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 test 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 mea
42、surements 6.3.1 Coated annealed glass A measurement sample shall be cut from the centre of the reference test piece. The actual size 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 inc
43、idence at the following wavelengths: 550 nm (representative wavelength for light and solar transmittance); 900 nm (representative wavelength 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 n
44、ormal incidence. BS EN 1096-2:2012EN 1096-2:2012 (E) 9 6.3.2 Toughened or heat strengthened coated glass As the measurement sample cannot 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 t
45、ests are set out in Table 2. Table 2 Duration of the tests Test Test duration for class A B S Condensation resistance Acid resistance 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 t
46、est is excluded for Class S coatings as they are subject to frequent cleaning in the applications for which theyare used in accordance 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
47、 are designed to verify the chemical and mechanical characteristics of the coating. The tests are as follows: condensation resistance 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
48、effect on the visual quality of the product and its spectrophotometric properties. Whilst it would be feasible to evaluate the spectrophotometric properties across the entire spectrum, a number of representative wavelengths have been selected. These wavelengths represent transmission of light and en
49、ergy, together with reflectance relating to emissivity, where appropriate. BS EN 1096-2:2012EN 1096-2:2012 (E) 10 Each test shall be 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
