| 摘要 |
A multi-component composite coating is provided which includes: (a) an elastomeric basecoat formed from a curable basecoat composition deposited up on a surface of a substrate; and (b) a topcoat applied over the basecoat, the topcoat being different from the basecoat and being formed from a curable topcoat composition comprising a polythioether material. The topcoat can hav e a higher tensile strength and percent elongation than the elastomeric baseco at such that when the composite coating is deformed, the basecoat can fracture before the topcoat to permit the topcoat to further deform while maintaining integrity of the topcoat. The composite coating is useful for inhibiting fue l leaks from an aerospace fuel storage container.
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