Retroreflective sheet coated with silica layer

作者: Tzuli J. C O Minnesota Mining And Huang

DOI:

关键词: Layer (electronics)Dispersion (chemistry)Materials sciencePolyurethaneComonomerPolyvinyl chlorideCoatingWettingPolymerComposite material

摘要: Retroreflective sheeting has been improved by a coating comprising silica and transparent polymer selected from aliphatic polyurethanes, polyvinyl chloride copolymers having minor amount of comonomer containing at least one carboxylic acid or hydroxyl moiety, acrylic polymers. Silica comprises 10-80 weight percent (10-70% in the case polyacrylates) protective coating. For example, solution dispersion polyurethane is mixed with sol possibly other ingredients (e.g. wetting agent, UV light absorber adhesion promoter), composition coated onto retroreflective sheet dried. The superior soil dew repellancy, retaining higher percentage original brightness after exposure to dirt and/or conditions.

参考文章(39)
Paul Chao, Non-glare coating ,(1984)
William John Chambers, Soil-repellent coating compositions ,(1974)
Christopher L Wilson, Wettable polyurethane sponge ,(1961)
Vito J. Colangelo, Peter A. Thornton, Fundamentals of engineering materials Prentice-Hall. ,(1985)
Terry R. C O Minnesota Mining And Bailey, High-angularity retroreflective sheeting and method for manufacture ,(1984)
Roger W. C O Minnesota Mining And Lange, Transparent non-vitreous ceramic particulate ,(1985)
Martin Simon Swerdlow, Surface-modifying coating compositions ,(1981)