Weatherability of hybrid organic-inorganic silica protective coatings on glass. Progress in Organic Coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43900747" target="_blank" >RIV/60461373:22310/15:43900747 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0300944015300448" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0300944015300448</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.porgcoat.2015.07.001" target="_blank" >10.1016/j.porgcoat.2015.07.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Weatherability of hybrid organic-inorganic silica protective coatings on glass. Progress in Organic Coatings

Popis výsledku v původním jazyce

Currently, there is a growing interest in the application of silicon-based technologies for the development of advanced hybrid organic-inorganic coatings with strong weatherability. In this study, the sol-gel process is used to prepare such coatings on glass and their resistance to weathering effects is assessed afterwards. Various sols were prepared by mixing a silica-based inorganic matrix (tetraethyl orthosilicate) with different quantities of silica alkoxides functionalised with various organic groups. Subsequently, the sols were dip-coated onto glass samples at low temperatures without any heat treatment. The coatings prepared were analysed before and after three model ageing tests simulating various weathering parameters. After ageing, the best performing coatings showed good overall homogeneity and transparency (optical microscopy, SEM), improved water repellency and adhesion to the glass substrate (static contact angle measurements, cross-cut tape tests) and no colour or chemical composition changes (UV-VIS, FTIR). Compared with commercial hybrid silica products, the alkyl- and methacryloxy-functionalised silica coatings particularly displayed improved homogeneity, elasticity and barrier properties. Thus, these low temperature coatings, easily applicable to thin films, appear to fulfil the main requirements for the protection of the glass exposed to weathering phenomena.

Název v anglickém jazyce

Weatherability of hybrid organic-inorganic silica protective coatings on glass. Progress in Organic Coatings

Popis výsledku anglicky

Currently, there is a growing interest in the application of silicon-based technologies for the development of advanced hybrid organic-inorganic coatings with strong weatherability. In this study, the sol-gel process is used to prepare such coatings on glass and their resistance to weathering effects is assessed afterwards. Various sols were prepared by mixing a silica-based inorganic matrix (tetraethyl orthosilicate) with different quantities of silica alkoxides functionalised with various organic groups. Subsequently, the sols were dip-coated onto glass samples at low temperatures without any heat treatment. The coatings prepared were analysed before and after three model ageing tests simulating various weathering parameters. After ageing, the best performing coatings showed good overall homogeneity and transparency (optical microscopy, SEM), improved water repellency and adhesion to the glass substrate (static contact angle measurements, cross-cut tape tests) and no colour or chemical composition changes (UV-VIS, FTIR). Compared with commercial hybrid silica products, the alkyl- and methacryloxy-functionalised silica coatings particularly displayed improved homogeneity, elasticity and barrier properties. Thus, these low temperature coatings, easily applicable to thin films, appear to fulfil the main requirements for the protection of the glass exposed to weathering phenomena.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JK - Koroze a povrchové úpravy materiálu

OECD FORD obor

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Projekt

<a href="/cs/project/DF12P01OVV017" target="_blank" >DF12P01OVV017: Technologie údržby a konzervace mozaiky Posledního soudu a metody restaurování-konzervování středověkého a archeologického skla.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Progress in Organic Coating

ISSN

0300-9440

e-ISSN

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Svazek periodika

88

Číslo periodika v rámci svazku

November 2015

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

172-180

Kód UT WoS článku

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EID výsledku v databázi Scopus

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