1、BSI Standards PublicationBS EN 1096-5:2016Glass in building CoatedglassPart 5: Test method and classification for the self-cleaning performances of coated glass surfacesBS EN 1096-5:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1096-5:2016.The UK particip
2、ation in its preparation was entrusted to Technical Committee B/520/1, Basic and transformed glass products.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users
3、 are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89845 7 ICS 81.040.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of
4、 the Standards Policy and Strategy Committee on 29 February 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1096-5:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1096-5 January 2016 ICS 81.040.20 English Version Glass in building - Coated glass - Part 5
5、 - Test method and classification for the self-cleaning performances of coated glass surfaces Verre dans la construction - Verre couche - Partie 5: Mthode dessai et classification des performances autonettoyantes des surfaces de verre couche Glas im Bauwesen - Beschichtetes Glas - Teil 5: Prfverfahr
6、en und Klasseneinteilung fr das Selbstreinigungsverhalten von beschichteten Glasoberflchen This European Standard was approved by CEN on 30 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st
7、atus 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 versions (English, French,
8、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, Belgium, Bulgaria, Cro
9、atia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andU
10、nited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
11、EN 1096-5:2016 EBS EN 1096-5:2016EN 1096-5:2016 (E) 2 Contents PageEuropean foreword . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Symbols and abbreviations . 6 5 Principle of the test 6 6 Instrumentation 7 6.1 UVA-Illumination chamber 7 6.2 Sample support 7 6.3 Spraying nozzl
12、e 8 6.4 Dirt mixture pressure tank 8 6.5 Water pressure tank 8 6.6 Timer for spray 8 6.7 Furnace used to dry the glasses . 8 7 Preparation of the glass samples. 9 7.1 General 9 7.2 Tested sample. 9 7.3 Control sample 10 8 Haze measurement 11 8.1 Unexposed surface cleaning . 11 8.2 Position of haze m
13、easurements on the samples . 11 8.3 Measurement of transmission haze 12 9 Preparation of dirt mixture 12 9.1 General . 12 9.2 Stearic acid solution 12 9.3 Adipic acid solution . 12 9.4 Solid compound suspension . 13 9.5 Final dirt mixture . 13 10 Test procedure 14 10.1 General . 14 10.2 Initial acti
14、vation . 14 10.2.1 Glass samples cleaning . 14 10.2.2 UV irradiation 14 10.2.3 Initial haze measurement . 14 10.3 First cycle 15 10.3.1 General . 15 10.3.2 Dirt mixture spraying . 15 10.3.3 Drying . 15 10.3.4 Haze measurement after dirt spray 16 10.3.5 UV-A irradiation . 16 10.3.6 Haze measurement a
15、fter UV irradiation . 16 10.3.7 Deionized water spraying . 16 BS EN 1096-5:2016EN 1096-5:2016 (E) 3 10.3.8 Drying . 17 10.3.9 Haze measurement after deionized water spray 17 10.4 Second cycle 17 10.5 Collection of the results 17 11 Classification 18 12 Test report 18 Annex A (normative) Sample suppo
16、rt and spray installation . 19 A.1 Spray rig . 19 A.2 Spray system . 20 Annex B (normative) Haze measurement method 22 B.1 General . 22 B.2 The instrument 22 B.3 Calculation. 23 B.4 Values 24 B.5 Short cut procedures . 24 Annex C (normative) Contamination checking procedure . 25 C.1 General . 25 C.2
17、 Evaluation of the contamination of the test environment . 25 C.3 Irregular contamination of the sample. 25 Annex D (normative) Statistical analysis of test results Calculation of statistical numbers to obtain a self-cleaning functionality used for classification of coated glass 26 Annex E (informat
18、ive) Round Robin tests. 27 E.1 General . 27 E.2 Typical results . 27 E.3 Results interpretation. 29 Bibliography . 31 BS EN 1096-5:2016EN 1096-5:2016 (E) 4 European foreword This document (EN 1096-5:2016) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of whi
19、ch 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 July 2016, and conflicting national standards shall be withdrawn at the latest by July 2016. Attention is drawn to the possibilit
20、y 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 rights. This part of the standard is published to allow the test methodology to be used. As stated in the scope, at the present ti
21、me, the test procedure does not specifically address the durability of the coatings self-cleaning functionality. Work is on-going to develop applicable testing. EN 1096, Glass in building Coated glass, is composed of the following parts: Part 1: Definitions and classification; Part 2: Requirements a
22、nd test methods for A, B and S coatings; Part 3: Requirements and test methods for C and D coatings; Part 4: Evaluation of conformity/Product standard; Part 5: Test method and classification for the self-cleaning performances of coated glass surfaces. According to the CEN-CENELEC Internal Regulation
23、s, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
24、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1096-5:2016EN 1096-5:2016 (E) 5 1 Scope This European Standard defines a test method to establish the self-cleaning performances
25、for coatings on glass which utilize sun, rain or a combination of sun and rain to enhance the cleanliness of the glass. The European Standard applies to class A coated glass as defined in EN 1096-1 and EN 1096-2 for use in outdoor building applications. The test is designed to be applicable for coat
26、ings on glass which use hydrophilic or photocatalytic active functionalities to enhance the cleanliness of the glass. The test procedure does not specifically address the durability of the coatings self-cleaning functionality. 2 Normative references The following referenced documents, in whole or in
27、 part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1096-1, Glass in building - Coated glass -
28、Part 1: Definitions and classification EN ISO 4892-3:2013, Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 4892-3:2013) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1096-1 and the following apply. 3.1
29、glass substrate basic glass, special basic glass, chemically strengthened basic glass, thermally treated basic and special basic glass, laminated glass or laminated safety glass 3.2 coating one or more thin solid layers of inorganic materials applied onto the surface of a glass substrate by various
30、methods of deposition Note 1 to entry: Methods of deposition are described in EN 10961. 3.3 glass with dual coating glass substrates to which coatings have been applied on both sides Note 1 to entry: The second coating should not necessarily be a self-cleaning coating. 3.4 coated glass glass substra
31、te to which has been applied a coating, in order to modify one or more of its properties BS EN 1096-5:2016EN 1096-5:2016 (E) 6 3.5 self-cleaning coating coating on glass substrates allowing obtaining or maintaining in time a cleaner surface as compared to untreated glass 3.6 hydrophilic coating coat
32、ing allowing maintaining a water contact angle of less than 20 3.7 photocatalytic coating coating containing a substance that performs one or more functions based on oxidation and reduction reactions under photo irradiation, inducing decomposition and removal of contaminants 3.8 secondary coating co
33、ating deposited on the opposite side of a self-cleaning coating, in case of dual coatings 3.9 haze wide angle scattering of light expressed as the percentage of the total transmitted light which, in passing through the glass, deviates from the incident beam by more than 2,5 4 Symbols and abbreviatio
34、ns For the purpose of this document, the following symbols and abbreviations apply. RH Relative humidity SglobalGlobal standard deviation TtTotal light transmittance TdDiffuse light transmittance H Haze GlobalHMean global change of haze HinitialHaze after initial preparation of the sample (cleaning
35、/ activation) Hcycle1dirtHaze after cycle 1 dirt application Hcycle1sunHaze after cycle 1 UV exposure Hcycle1rainHaze after cycle 1 water spray Hcycle2dirtHaze after cycle 2 dirt application Hcycle2sunHaze after cycle 2 UV exposure Hcycle2rain= HfinalHaze after cycle 2 water spray H = Hfinal- Hiniti
36、al Haze variation between initial cleaning stage and end of cycle 2 5 Principle of the test Standardized glass samples shall be submitted to a spray of a standardized dirt mixture, followed by a simulation of natural weathering action by applying UV irradiation (to simulate sun) and water spray (to
37、simulate rain). This cycle shall be repeated twice to ensure better stability of results. BS EN 1096-5:2016EN 1096-5:2016 (E) 7 The haze shall be measured at initial preparation (after cleaning) and final stage (at the end of the second cycle). The evaluation criteria shall be the haze variation (H)
38、 between the sample after initial preparation (Hinitial) and the sample at the final stage of the test (Hfinal), see Formula (1). = final initialHH H (1) NOTE The incident light on glass samples with dirt deposit is diffused scattered and the effect in transmission is seen as reduction of contrast o
39、f objects observed through the glass. It is strongly recommended to measure haze at each step of the test (as explained in Clause 10) in order to check that there is no deviation of the test. The test and all handling of the product to be tested shall be performed in a clean environment, i.e. exempt
40、 from any source of contamination (organics, silicones, dust) which could modify the surface, affect the functionality, the test conditions or the haze measurements. An example of contamination checking procedure is given in Annex C. 6 Instrumentation 6.1 UVA-Illumination chamber A UV illumination c
41、hamber1)shall be equipped with UVA-340 lamps, such as described in EN ISO 4892-3:2013, Table 1 (“type I” lamps). A closed chamber is recommended. The irradiation power shall be set to 0,68 Wm2nm1at 340 nm on the surface of the samples, which is the maximal irradiance of solar light according to CIE
42、85 Table 4. The irradiation level shall be maintained constant and uniformly distributed such as to ensure a same level of irradiation on all the samples. NOTE The irradiation level can be monitored with a radiometer. The intensity of the lamp can be controlled continuously and adjusted to balance a
43、ging of the lamps. Relative Humidity (RH) shall be maintained between 15 % and 50 % inside the chamber during the irradiation period. The air temperature in the illumination chamber shall remain between 25C and 40C. The UVA cabinet shall be placed in a well-ventilated area and its vents shall be ful
44、ly opened, to ensure that the temperature inside the cabinet remains in the indicated values. The temperature and RH shall be monitored and given in the test report. The cabinet shall be clean and exempt of any contamination source, especially silicone source, see Annex C. 6.2 Sample support For the
45、 spraying steps, the sample shall be installed on a support, with an inclination of 10 from vertical. The description of the support is given in Annex A. 1) Equipment UV2000 or UVCon from Atlas or QUV from QPannel have been used during the Round Robin tests and found to be suitable. This equipment i
46、s an example of a suitable product available commercially. This information is given for the convenience of users of this European Standard and does not constitute an endorsement by CEN of this product. BS EN 1096-5:2016EN 1096-5:2016 (E) 8 6.3 Spraying nozzle The spraying nozzle2)shall be fixed hor
47、izontally and aligned with the centre of the haze measurement area on the glass samples. The distance between the nozzle tip and the glass sample shall be 300 mm, as described in Annex A. The nozzle shall be a full cone airless nozzle with a large spray angle (120). 6.4 Dirt mixture pressure tank Th
48、e dirt mixture shall be placed in a dedicated pressure vessel equipped with a mechanical stirrer. The turning velocity of the stirrer shall be adapted to avoid particles precipitation. Pressure vessel and mechanical stirrer shall be made of inert material resistant to acid corrosion and shall not co
49、ntain any silicone contamination source3).Attention shall be paid to ensure sufficient height of liquid (at least 5 cm) in the container in order to avoid air bubbles in the pulverization system, which could affect final results. The section of container may be lowered by using a narrower container inside the pressure tank to reduce the necessary solution volume. 6.5 Water pressure tank The same precautions against air bubbles as described in 6.4. shall be taken. The water pressure tank may be a simple clean pressurized tank. 6.6 Timer for
