The disclosure relates to a thin layer comprising a catechol containing polymer or oligomer, as well as methods of making and using the thin layer comprising the catechol containing polymer or oligomer. The disclosure also relates to a thin layer comprising a catechol containing polymer or oligomer adjacent to and in contact with a bulk adhesive layer. The layers demonstrate improved adhesion between coral and coral-like materials.

There is provided a conductive adhesive which can suppress erosion of polycarbonate and form a cured product exhibiting excellent conductivity at a low temperature. There is also provided a conductive adhesive which can form a cured product exhibiting excellent adhesive property to plastics (particularly carbonate) at a low temperature. The conductive adhesive according to the present invention is a conductive adhesive which contains the following components (A) to (C) and is liquid at 25° C.: component (A): an alicyclic epoxy resin; component (B): a boron-based thermal cationic initiator; and component (C): a conductive filler.

A method for nano-depth surface activation of a PTFE-based membrane and relates to the technical field of polymer composites is disclosed. The method comprises the following steps: covering a functional surface of a PTFE-based nano functional composite membrane, performing surface activation treatment on a single surface of the membrane to which a bonding adhesive is applied, and migrating and complexing a high-toughness cold bonding adhesive tape on the membrane surface, with an activated structure layer, of the PTFE-based nano functional composite membrane through a mechanical adhesive applying device to form an adhesive-membrane complex. An extremely strong affinity and a high-strength bonding performance are generated between the membrane and the adhesive, and the adhesive-membrane complex is formed. Integration of membrane/adhesive bonding complexing, membrane/membrane bonding complexing and membrane/adhesive layer bonding is realized.

Described are self-cleaning films that can be removably attached to passenger cabin furnishings to prevent the spread of pathogens. A self-cleaning film can include an adherable element having an adhesive layer (407, 507), an antimicrobial material connected with the adhesive layer (407, 507) to sanitize the adhesive self-cleaning antimicrobial element (627), and an abrasion-resistant surface that resists damage to the self-cleaning film during repeated washings. The self-cleaning element is sized to conform to a exposed surface of a passenger seat (101).

A method for analysing a bonding between two aeronautical parts. The method includes the steps of a) applying a release agent to a first surface to be bonded of a first part and to a second surface to be bonded of a second part, b) applying an adhesive to at least one of the first and second surfaces and positioning these surfaces on top of each other, the adhesive forming an adhesive film after polymerisation, c) separating the parts from each other and removing the adhesive film in one piece, d) analysing the adhesive film. The invention also relates to a method for bonding two aeronautical parts.

An airfoil is provided that includes an exterior substrate surface, and a coating layer adjacent to the exterior substrate surface. The coating layer has an icephobic coating composition that includes a first polymer, a second polymer that is a fluoropolymer, an isocyanate, and a curative. The coating layer is bonded to the airfoil via an intermediate adhesive layer. The coating layer has a bottom surface, and at least one of the exterior substrate surface and the bottom surface has an RMS surface roughness of at least about 1 micron or greater before the coating layer is bonded to the exterior substrate surface.

Adhesive formulations for forming a fluorinated poly(imide-phthalonitrile) thermoset polymer are provided. Such an adhesive formulation may comprise a fluorinated imide-phthalonitrile oligomer having Formula IV

##STR00001##

wherein R.sub.1 is an unsubstituted or substituted aryl group and does not comprise an ether group; R.sub.2 is an unsubstituted or substituted aryl group and does not comprise an ether group; at least one of R.sub.1 and R.sub.2 comprises a fluorine substituent; and n has a value of from 1 to 30.

Conventional aquatic organism adherence preventive films are designed for an underwater structure (mainly, a boat/ship or the like) capable of moving through water at relatively high speeds. That is, there has been no film capable of adequately preventing adherence of aquatic organisms to a sensor over a long period of time, and capable of being easily peeled off from a submersible sensor unit while preventing a pressure-sensitive adhesive from remaining on a housing of the submersible sensor unit. The present invention provides an aquatic organism adherence preventive film capable of preventing adherence of aquatic organisms even when used in an underwater structure receiving almost no a water flow resistance, e.g., an underwater structure involving almost no underwater movement, for about half a year, and capable of being easily peeled off from a submersible sensor unit while preventing a pressure-sensitive adhesive from remaining on a housing of the submersible sensor unit.

Provided is a curable composition containing a reactive mixture of components including an polyethersulfone having a chemical group reactive with an epoxide, a cycloaliphatic polyepoxide resin, a polyepoxide having a functionality greater than two, a liquid diepoxide resin, a first curative containing 9,9-bis(aminophenyl)fluorene or a derivative therefrom and having a curing onset temperature of from 150° C. to 200° C. The components can further comprise a second curative having a curing onset temperature of from 60° C. to 180° C. When thermally curing this composition, the second epoxy curative starts to cure before the first epoxy curative, thereby inhibiting vertical flow of the adhesive during the curing process.

A method and apparatus for forming a tool. A film is applied to a reference part. A vacuum is applied to cause the film to conform to a surface of the reference part such that an adhesive side of the film faces outward from the reference part and a release side of the film conforms to and contacts the reference part. A plurality of composite plates is adhered to the adhesive side of the film over a plurality of flat portions of the reference part. An adhesive material is applied to fill in a plurality of gaps between the plurality of composite plates. The adhesive material is cured to form the tool.