High scratch and etch resistance by optimized cross-linking chemistry and density |
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Authors: | Carmen Flosbach |
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Institution: | DuPont Performance Coatings, D-42271, Wuppertal, Germany |
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Abstract: | Target of development in the field of modern automotive clear coats is the combination of high etch and high scratch resistance. For high etch resistance the cross-linking chemistry is the key factor. The property scratch resistance is mainly influenced by the cross-linking density and the flexibility of chains between netpoints. By combining these parameters high etch and scratch resistant clear coats can be formulated. As a representative example an optimized clear coat based on epoxy/acid cross-linking chemistry is discussed. The ways to achieve high cross-linking density are shown. |
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Keywords: | etch resistance scratch resistance coatings crosslinking epoxy/acid |
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