Journal of Character/zat/on C/lt 1, Sayı 3, pp. 131-136, October2021 Copyr/ght © 2021 JCHAR ISSN: 2757-9166 Research Art+cle https://jcharacter/zat/on.com https://jcharacter/zat/on.org 131 Surface Modification of PC and PMMA sheet for Enhanced Scratch Resistance Şenay Iskender 1* , Serkan Işmar 1 , Atilla Evcin 2 1* Research & Development Center, Işık Plastic Co. Gebze, Kocaeli, Turkey 2 Department of Materials Science and Engineering, Faculty of Engineering, University of Afyon Kocatepe, Afyonkarahisar, Turkey (Received date: 03.10.2021 and Accepted date: 23.10.2021) (DOI: 10.29228/JCHAR.52837) REFERENCES: Iskender Ş., Işmar S., Evcin A., Surface Modification of PC and PMMA sheet for Enhanced Scratch Resistance, Journal of Characterization, (1)3 , 131-136, 2021. Abstract POLICAM PMMA (polymethylmethacrylate) and polycarbonates (PC) sheet used in many sectors such as furniture, decoration, building materials, lighting have optical properties. They are thermoplastic polymer sheets with a maximum usage temperature of 80 ° C. Thermoplastic polymer with amorphous structure is quite transparent and has the closest permeability to glass. Its density is half the density of glass and it is light. Fabrication applications are very easy. It is preferred instead of glass. Surface scratches are seen in areas of use in the environments where it is exposed. Surface improvement applications can be made with functional coatings. Sol-gel method is one of the most widely used methods because it is easy and useful in functional coating of ceramic, glass and plastic surfaces. In this study, the sol gel method was preferred for coating PMMA and PC plate surfaces. The prepared functional coating is applied to PC and PMMA sheet surface in certain thicknesses by means of an applicator. The improvements seen on the plate surface after the coating has cured have been controlled. Surface scanning with SEM, anti-scratching of the surface with pencil hardness test, and permanent properties on the surface were determined by artificial aging. Keywords: Polycarbonate, Polymethylmethacrylate, Coating, Sol-gel, Silane. Gelişmiş Çizilme Direnci için PC ve PMMA levhaların Yüzey Modifikasyonu Öz Mobilya, dekorasyon, yapı malzemeleri, aydınlatma gibi birçok sektörde kullanılan POLİCAM PMMA (polimetilmetakrilat) ve polikarbonat (PC) levhalar optik özelliklere sahiptir. Maksimum kullanım sıcaklığı 80°C olan termoplastik polimer levhadır. Amorf yapıya sahip termoplastik polimer oldukça şeffaf ve cama en yakın geçirgenliğe sahiptir. Yoğunluğu camın yoğunluğunun yarısıdır ve hafiftir. Fabrikasyon uygulamaları çok kolaydır. Cam yerine tercih edilir. Maruz kaldığı ortamlarda kullanım alanlarında yüzey çizikleri görülür. Fonksiyonel kaplamalar ile yüzey iyileştirme uygulamaları yapılabilmektedir. Sol-jel yöntemi seramik, cam ve plastik yüzeylerin fonksiyonel kaplanmasında kolay ve kullanışlı olması