| abstract |
A fiber reinforced resin matrix comprising: first and second layers of a fiber reinforced resin matrix comprising first and second resin matrices; i) at least one viscoelastic layer; and ii) at least one barrier layer. And a viscoelastic structure positioned between the first layer and the second layer and bonded to the first and second resin matrices, a fiber reinforced resin matrix composite laminate is provided. The In some embodiments, the viscoelastic structure includes at least two barrier layers that differ in composition from the at least one viscoelastic layer, the at least two barrier layers being bonded to the first and second resin matrices. ing. In some embodiments, the one or more barrier layers are substantially impermeable to organic solvents and / or substantially impermeable to water and / or substantially impermeable to gas. It may be impermeable. |