Abstract: An article is reinforced by applying to it a thermally curable composition of a resin mixture of 10% to 60% by weight of a diglycidyl ether of bisphenol-A, 5% to 25% by weight of an epoxy novolac, and 5% to 25% by weight of a reinforcement material comprising carbon fibers. Following application, the composition is cured. In some instances, at least a portion of the diglycidyl ether of bisphenol-A and/or the epoxy phenyl novolac resin may be adducted with an elastomer.

Abstract: An article is reinforced by applying to it a thermally curable composition of a resin mixture of 10% to 60% by weight of a diglycidyl ether of bisphenol-A, 5% to 25% by weight of an epoxy novolac, and 5% to 25% by weight of a reinforcement material comprising carbon fibers. Following application, the composition is cured. In some instances, at least a portion of the diglycidyl ether of bisphenol-A and/or the epoxy phenyl novolac resin may be adducted with an elastomer.

Abstract: A constrained layer, composite structure for damping acoustic vibrations includes an extensional layer comprised of a first polymeric material, and a constraining layer of a second polymeric material. The modulus of elasticity of the constraining layer is greater than that of the extensional layer. In use, the structure is disposed on the surface of an article in which acoustic vibrations are to be damped so that the extension layer overlies the surface. Also disclosed are methods for preparing the structure, including automated methods.

Abstract: Thermal insulation is provided to a subsea pipeline by disposing a thermally insulating tape on the pipeline. The insulating tape has a layer of a syntactic foam composition disposed between layers of a thermoplastic polymer. The syntactic foam composition may be a curable composition, and this composition may be cured either before or after the tape is applied to the pipeline. Application of the tape may be made prior to the deployment of the pipeline in a subsea location or after the pipeline is disposed. The tape may be configured to include attachment features which aid in retaining the tape on the pipeline. Also disclosed are specific tape compositions for insulating subsea pipelines.

Abstract: A constrained layer, composite structure for damping acoustic vibrations includes an extensional layer comprised of a first polymeric material, and a constraining layer of a second polymeric material. The modulus of elasticity of the constraining layer is greater than that of the extensional layer. In use, the structure is disposed on the surface of an article in which acoustic vibrations are to be damped so that the extension layer overlies the surface. Also disclosed are methods for preparing the structure, including automated methods.