| Résumé : |
The main objective of most coatings is to both protect and decorate. The balance that must be achieved between decoration and durability depends on application. Even so, the durability of paints and coatings continues to be a key performance characteristic. Therefore, improving durability is always an important goal of new product development efforts. The challenge is to provide performance over the longer term without increasing cost. On the other hand, significant cost savings can be obtained over the life of an asset by increasing coating durability, particularly for applications where the surfaces to be painted are difficult to access and coating application is more complex (monumental building exteriors, bridges, and offshore structures), for assets that must remain in service (trains and airport terminals), and where extensive surface preparation is required prior to coating. In most cases, the cost of the coating itself is relatively small compared to the costs of application, failure of the coating, and down time.
Specialty coatings specifically designed to address the environmental conditions within which an asset exists will provide protection much more effectively than commodity-type coating solutions. Whether on a car, house, ship, bridge, tractor, or home appliance, reducing the rate of applied coating failure and the interval between repainting benefits all users. By extending asset lifetimes, coatings technology can be a significant contributor to facilitating resource, energy, and ultimately global sustainability. The key for coating manufacturers is to understand customer expectations before selecting their final formulations. |
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Durability improvement underlies much coating innovation in COATINGS TECH, Vol. 16, N° 6 (06/2019)
