Summaries
Silicate coatings are reactive inorganic coatings. These provide weather-, chemical- and temperature-resistance coatings with lasting decoration and protection of steel against corrosion. Properties of these coatings depend on the ratio of silica to alkali metal oxide. The drying rate and chemical resistance properties of the film increase with increasing ratio of silica to alkali metal oxide. However, water miscibility of the system decreases. Their curing mechanism shows an explicit difference between the curing on masonry and iron substrates. These coatings exhibit a unique property, namely their chemical reaction with the substrate, which accounts for their excellent abrasion resistance, thus making them a permanent part of the system.
Résumé
Les revêtements au silicate sont des revêtements inorganiques réactifs. Ils sont résistants aux intempéries, aux attaques chimiques et aux températures nuisibles tout en fournissant une décoration durable et en protégeant l’acier contre la corrosion. Les propriétés de ces revètements dépendent du rapport de leur silice à leur oxide métallique alcalin. La vitesse de séchage et les propriétés de résistance aux attaques chimiques du film augment au fur et à mesure qu’augmente le rapport silice sur oxide métallique alcalin. Cependant, la miscibilité avec l’eau diminue dans le système. Leur méchanisme de séchage montre une différence explicite entre le séchage du revêtement sur les substrats de maconnerie et sur les substrats de fer. Ces revêtements montrent une propriété unique, c’est à dire leur réaction chimique avec le substrat, ce qui explique leur excellente résistance à l’abrasion. Grace à cette propriété ils font partie permanente du système.
Zusammenfassung
Silikatlacke sind reaktive anorganische Lacke. Sie verleihen Resistenz zu Witterungseinflüssen, Temperaturschwangkungen und aggressiven Chemikalien, und sind gleichzeitig eine dekorative und korrosionshemmende Anstrichfarbe für Stahl. die Eigenschaften dieser Lacke hängen stark von ihrem Verhältnis von Silikat zu Alkalimetalloxid ab. Allerdings geht das einher mit einer geringere Mischbarkeit mit Wasser. Der Härteprozeß zeigt einen deutlichen Unterschied zwischen der Härtung auf Stuck und Stein, und der Härtung auf Eisensubstraten. Die Lacke reagieren mit den Substraten und werden ein dauerhafter Teil des Systemes, was ihnen ihre hervorragende Abrasionsresistenz verleiht.
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Parashar, G., Bajpayee, M. & Kamani, P. Water-borne non-toxic high-performance inorganic silicate coatings. Surface Coatings International Part B: Coatings Transactions 86, 209–216 (2003). https://doi.org/10.1007/BF02699655
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DOI: https://doi.org/10.1007/BF02699655