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Silicon-acrylic sol-gel modified automotive clear topcoats for etch and scratch resistance

Finitions claires pour automobiles à base des résines sol-gel modifiées de silicon-acrylique pour de bonne résistance au mordançage et à la rayure

Sol-gelmodifizierte Silicium-Acrylklarautodecklacke für Ätz- und Kratzfestigkeit

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Surface Coatings International Part B: Coatings Transactions

Summaries

Automotive clear topcoats must provide superior resistance against mechanical and chemical damage to guarantee long-term aesthetic appearance. Vehicle manufacturers have extended coating warraties while the performance demands have increased. Reported here are etch and scratch resistant clear topcoat formulations of silicon-acrylic sol-gels with acrylic-melamine and acrylic-isocyanate systems. These one and two-part thermally-cured formulations were applied to typical automotive melamine basecoats. Industry standard performance testing and micro and nanoscratch evaluations are compared, and contrasted with non sol-gel-containing formulations.

Résumé

Les finitions claires pour automobiles doivent assurer de meilleure résistance à des dégâts et mécaniques et chimiques afin d’assurer à long terme l’aspectes ésthétiques. Les fabricants de véhicules ont prolongé des garanties concernant la peinture, tandis que les exigences à l’égard du rendement ont augmentées. Ici on donne un compte rendu de la résistance au mordançage et à la rayure des finitions à base des sol-gel modifiées résines de silicon-acrylique avec des systèmes acrylique-mélamines et acrylique-isocyanates. Les revêtements mono ou à deux composants thermodurscissables ont été appliqués aux usuelles peintures de fond de mélamine pour automobiles. Des méthodes d’essai normalisées en l’industrie et également les évaluations de la rayure et micro et nano sont comparées et contrastées auprès des finitions exemptes des constituants sol-gel.

Zusammenfassung

Klarautodecklacke müssen bessere Fähigkeit gengen mechanische und chemishe Shaden, um langfristig ästhetisches Aussehen zu garantieren, liefern. Fahrzeughersteller haben Lackgarantien verlängert, indem Leistungsbedürfnisse haben zugenommen. Hier wurden ätz-und kratzfestige Klarautodecklacke basiert auf sol-gelmodifizierte Silicium-Acrylmelamin und Acryl-Isocryanatsysteme berechtet. Diese thermohartenden Ein- und Zweikomponentenlacke wurden auf typische Melamin-Autobasislack angewandt. Die Normprüfungsmethoden für die Autoindustrie und Mikro-und Nanokratzauswertungen wurden mit den sol-gelfreien Beschichtungen verglichen und kontrastiert.

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References

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Authors and Affiliations

  1. Dow Corning Corporation, Mail # C043D1, PO Box 994, 48686-0994, Midland, MI, USA

    JD Blizzard, SV Perz, PJ Popa, JL Stasser & JS Tonge

Authors
  1. JD Blizzard
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  2. SV Perz
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  3. PJ Popa
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  4. JL Stasser
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  5. JS Tonge
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Corresponding author

Correspondence to PJ Popa.

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Blizzard, J., Perz, S., Popa, P. et al. Silicon-acrylic sol-gel modified automotive clear topcoats for etch and scratch resistance. Surface Coatings International Part B: Coatings Transactions 84, 205–211 (2001). https://doi.org/10.1007/BF02700399

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  • DOI: https://doi.org/10.1007/BF02700399

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