Composite article having protective coating

摘要

A composite article includes a substrate and a protective coating on at least a portion of the substrate. The protective coating includes reinforcement particles dispersed within an elastomeric matrix that is modified with a silicon-containing modifier selected from polysilsesquioxane, polyhedral oligomeric silicate and polyhedral oligomeric silsesquioxane (POSS).

主权项

1. A composite article comprising:
a substrate; and a protective coating on at least a portion of the substrate, the protective coating comprising reinforcement particles dispersed within an elastomeric matrix that is modified with a polyhedral oligomeric silsesquioxane (POSS) selected from the group consisting of trisnorbornenylisobutyl-POSS, trisilanolisooctyl-POSS, trisilanolphenyl-POSS, trisilanolisobutyl-POSS, trisilanolcyclopentyl-POSS, trisilanolcyclohexyl-POSS, vinyl-containing-POSS and combinations thereof, wherein the protective coating is multi-layered and includes a first layer having a first composition, and a second layer having a second, different composition and that is arranged adjacent to the first layer such that both the first layer and the second layer have an environmentally exposed outer surface and an opposed inner surface in direct contact with the substrate, and wherein the first composition is selected with respect to resisting erosion at a first angle of incidence and the second composition is selected with respect to resisting erosion at a second, different angle of incidence.