Exterior panels for motor vehicles

Details Exterior panels for motor vehicles Exterior panels for motor vehicles

B - Operations, Transporting

60

R

B60R 13/00 (2006.01) B32B 5/16 (2006.01) B32B 9/04 (2006.01) B32B 27/00 (2006.01) B32B 27/20 (2006.01) B60R 13/04 (2006.01) B62D 29/04 (2006.01)

Patent

CA 2332987

An exterior panel (10) for a motor vehicle has a coefficient of linear thermal expansion of less than 20 × 10 -6 inches of expansion per inch material per degree Fahrenheit. The exterior panel (10) comprises a rigid structure (14) formed from at least one thermoplastic material and reinforcement particles dispersed within the at least one thermoplastic. The reinforcement particles comprise less than 15 % of a total volume of the rigid structure. At least 40 % of the reinforcement particles have a thickness less than about 50 nanometers. A decorative coating layer (12) having at least one coloring agent is disposed on the rigid structure (14).

L'invention concerne un panneau extérieur (10) destiné à un véhicule à moteur. Ce panneau extérieur (10) présente un coefficient de dilatation thermique linéaire inférieur à 20 x 10<-6> pouces de dilatation par pouce de matériau et par degré Fahrenheit. Le panneau extérieur (10) est constitué d'une structure rigide (14) formée d'au moins un matériau thermoplastique et par des particules de renfort dispersées dans le ou les matériaux thermoplastiques. Les particules de renfort constituent moins de 15 % du volume total de la structure rigide. Au moins 40 % des particules de renfort présentent une épaisseur inférieure à environ 50 nanomètres. Une couche de revêtement (12) décorative contenant au moins un colorant est appliquée sur la structure rigide (14).

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