Materiali Energia Innovazione Rev. -- Execution Drafting Approval Page 2 of 9 _Eng. Mattia Santandrea, PhD_ _Eng. Mattia Santandrea, PhD_ _Eng. Luca Laghi_ |SQM_348_2020| Soci Fondatori 1 Introduction The following report presents test results and other relevant information for the: - Evaluation of the colorimetric coordinates and ΔE CIELAB; - Evaluation of the chromatic variation between “reference specimens” and “conditioned specimens”; performed on 2 types of laminated glass delivered to CertiMaC laboratory of Faenza by the Customer as reported in Ref. 2-a, 2-b. 2 References a. Quote: prot. 20299/lab of 08/09/2020. b. Order confirmation: e-mail of 08/09/2020. c. UNI EN 1062-11 Standard. Paints and varnishes – Coating materials and coating systems for exterior masonry and concrete – Part 11: Methods of conditioning before testing. d. ASTM D 2244 – 16: Standard practice for calculation of color tolerances and color differences from instrumentally measured color coordinates. e. ISO 3668:2020. Paints and varnishes – Visual comparison of color of paints. 3 Test object Tests were executed on the specimens delivered by the Customer to CertiMaC laboratory on 04/06/2020 in the form of: - Laminated Glass specimens with dimensions equal to 10 x 10 cm; Each specimen consists of 25 squares (5 rows x 5 columns) with a different chroma. Each row differs for the color employed (white, black, yellow, magenta, cyan), while each column differs for the chromatic percentage used (100%, 50%, 30%, 15%, 0%). For each type of product, 1 specimen was maintained “as it is” and used as reference, while 1 specimen was conditioned to 1000h of UV radiation, following the procedure described at Ref. 2-c. In this way, it was possible to perform the colorimetric measures and the evaluation of the chromatic variation between the conditioned specimen and the reference specimen. “Type 3” and “Type 4” reference specimens are shown in Figure 1.
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