Abstract: The invention relates to the use of mineral fibres or filaments and E-glass fibres having a SiO2 part of more than 50 wt. % in the form of a textile fabric, as a biocide-free antifouling agent for protecting submerged structures from damage by adhesion and multiplication of aquatic pests in the sea or in industrial water systems. The surface of the antifouling agent predominantly consists of fine basalt fibres and the fabric is woven, knitted or braided, a fabric formed according to multiaxial technology, or a nonwoven.

Abstract: A method for the repair of a sandwich plate having a core structure, a top surface layer and a bottom surface layer and a plurality of honeycomb-shaped cells includes providing at least one penetrating drill hole in at least one of the top surface layer and the bottom surface layer above one of the plurality of honeycomb-shaped cells in a damaged region of the sandwich plate, injecting a stabilising material into the honeycomb-shaped cell, and filling the damaged region with a filler material.

Abstract: Systems and methods for bonding ceramic materials are disclosed herein. In various embodiments, a process is provided comprising the steps of disposing a bonding material at least partially adjacent to a surface of a first silicon carbide component and at least partially adjacent to a surface of a second silicon carbide component, and bonding said first silicon carbide component to said second silicon carbide component by heating, wherein said bonding material comprises vanadium or titanium.

Abstract: A self-healing composite material comprising a fibre-reinforced polymeric matrix, wherein the polymeric matrix comprises a thermosetting polymer and a thermoplastic polymer.

Abstract: A method for applying and monitoring an application structure comprising a repairing function and device thereof are provided. The method includes arranging automatically a first application structure on the substrate using the application device. The first application structure on the substrate monitored by the at least one camera such that the at least one camera is constantly aligned to the first application structure and the first application structure. The method further includes transmitting the images acquired by the at least one camera to an image processing device that analyzes the images of the first application structure and the image processing device filing partial areas of the first application structure. The method also includes applying, after application of all partial areas of the first application structure, at least a second application structure to the substrate by the application device based on the repair list.

Abstract: Provided is a method for enhancing an adhesive bond between a pile and a resin adhesive by maintaining a constant uniform positive pressure of the entire wrapped region regardless of the shrinkage in the resin adhesive. This invention enhances underwater adhesive bond by ensuring proper contact while curing. In one embodiment, constant inward pressure is created by encapsulating the repair and applying a vacuum. The invention can be used for a variety of underwater applications using different resins and different substrate materials. For instance, the invention could be used to repair damaged critical infrastructure, e.g. Bridges, dams, pipelines and locks. Local, state and federal agencies in US and elsewhere as well as marine and naval contractors would find great utility with the invention. The concept could be extended to all adhesion dependent repairs.

Abstract: A protocol for determining process parameters for debulking composite laminates is established using a standardized a double vacuum debulk (DVD) process. This allows for the development of a rapid fabrication process for thick laminates of toughened carbon/epoxy composite materials. For rework, a single piece multilayer patch is made available for bonding with an adhesive layer to a prepared structural area.

Abstract: Methods, systems and devices for providing a shell cover to cover up an existing motorcycle fuel tank, and methods of installing the cover on the motorcycle fuel tank. The process allows the fuel tank to remain on the motorcycle without being removed. The fuel tank surface can be prepped by filling in indentations on the tank surface. Tank surfaces having only cosmetic damage, only punctures or having combinations of both cosmetic damage and punctures can be fixed. Next, a slurry and/or adhesive can be applied to the exterior tank surface and a cover is then placed over the fuel tank. The cover can be made from a plastic or fiberglass type material and can be painted to resemble the original motorcycle fuel tank.

Abstract: The present invention relates to a recyclable composite having natural (4) and carbon fibres (6) as a reinforcement material and epoxy resin (8) as a matrix. Preferably, the natural fibres are hemp. Furthermore, the present invention relates to a method for producing such a recyclable composite comprising the steps of preparing the composite, vacuum bagging it and then heating it with a heating cable (12). Finally, the present invention relates to a kit having a frame (10), a heating cable (12) and an apparatus box with a thermostat and heat sensors and which can be used for performing the method according to the invention.

Abstract: The invention relates to power engineering, in particular to a method for restoring a radial clearance between the stator and rotor parts of a turbogenerating set during reparation of the flow section thereof. The inventive method for restoring a radial clearance between the stator and rotor parts of a turbogenerating set, consists in mounting a temporary shroud, which is made of a sheet material and the thickness of which corresponds to a clearance size, on the rotor blades of a demounted rotor, in fixing a protective cover made of a composite material to said shroud, in applying a polymer sable epoxy resin material to the internal surface of the stator and to the protective cover of the blade shroud, in mounting the rotor in the stator and, said resin being polymerized, in removing the shroud and excess of resin, projected in the axial direction during said mounting, from the rotor Said invention makes it possible to reduce labor input for the turbogenerating set maintenance and repair.

Abstract: A method of reinforcing a thermoplastic part includes softening a portion of the thermoplastic part to form a pool, embedding fibers in the softened pool, and re-solidifying the pool embedded with fibers into a weld that strengthens the thermoplastic part.

Abstract: A process for recycling scrap of shoe stiffener comprising the steps of: 1. Kneading the collected scrap of shoe stiffener, having a core layer of TPU resin material (with filler) sandwiched in between two opposite net fabric layers, to be dense clumps; 2. Freezing the dense clumps to be hard frozen clumps; 3. Crushing the hard frozen clumps to be a crushed product including pellets of resin material, and short fibers; and 4. Extruding the crushed product including pellets and short fibers to produce a regenerated core layer; and covering or laminating two net fabric layers on opposite sides of the regenerated core layer to obtain a regenerated shoe stiffener sheet to enhance environmental protection and prevent from wasting of material resources.

Abstract: A method for reducing cost and weight in paint roller manufacturing processes and other continuous processes for producing tubular goods from polymers. The method may utilize a perforated substrate such as a perforated polypropylene strip or may include a perforating step which removes overage from an unperforated substrate. The perforated substrate is fed onto a mandrel to form a tube. Adhesive is applied upon the outer surface of the perforated substrate. A cover may be applied about the tube, and the resulting product is then cut into finished-size paint rollers. The removal of the overage results in a reduction in the weight of the paint roller. In certain embodiments the overage from a perforation step is collected, and may be reused in a subsequent implementation of the method or resold.

Abstract: In a method for making a window covering the user selects a first segment of cellular material in which there is a top cell having a top surface, at least one glue line on the top surface and a strip of fabric on the at least one glue line. The strip of fabric and at least a portion of the glue line are removed from the top surface of the top cell. and a second glue line is applied to that top surface. A second segment of cellular material is place over the second glue line on the top surface of the top cell of the first segment. The glue line cures and bonds the second segment of cellular material to the first segment of cellular material. If the cellular material has tabbed cells the processes can be used to join the tabs of the two segments together.

Abstract: A patch is used to rework an area of a structure. The patch is bonded to the structure by a layer of adhesive. A spacer placed between the patch and the structure is used to control the thickness of the adhesive and/or a bondline.

Abstract: A patch may be used to rework a composite structure in the filed. The patch is bonded to the structure by a layer of adhesive and includes perforations that allow the escape of air from the adhesive as the patch is compressed against the structure. A spacer may be introduced between the patch and the structure to control the thickness of the adhesive layer.

Abstract: A method for fabricating a repair laminate for a composite part having an exposed surface includes applying a bonding material to the exposed surface and forming an uncured ply stack assembly on the bonding material. The uncured ply stack assembly is formed by forming and compacting a series of uncured ply stacks. The ply stack assembly and bonding material are then cured.

Abstract: A method of restoring a section of a composite having a honeycomb bonded to a perforated skin includes the steps of separating a first honeycomb from the perforated skin to expose a portion of the perforated skin, inserting pins through perforations in the perforated skin, extending the pins through a repair material, attaching the repair material to the exposed portion of the perforated skin, and attaching a second honeycomb to the repair material. The method may include removing material from the exposed portion of the perforated skin, prior to inserting pins through the perforations, to create a more even bonding surface for attaching the repair material.

Abstract: A method for recovery of polymer, comprising contacting a polarizing plate comprising a polarizing element and first and second polymer films on its both surfaces, with at least an aqueous liquid, and then applying shear force to the polarizing plate to thereby separate the polarizing element and at least the first polymer film, is disclosed.

Abstract: In a pipeline lining method, a tubular lining material impregnated with a thermosetting resin is inserted in an everted state into a pipeline and expanded and pressed against an inner peripheral surface of the pipeline. A vapor mist and water at normal temperature are sprayed toward the tubular lining material and mixed together to cool the vapor mist. The cooled vapor mist is directed onto the tubular lining material to cure the thermosetting resin impregnated in the tubular lining material to line the pipeline with the tubular lining material.

Abstract: A patch for reworking an inconsistent area of a composite structure comprises a composite laminate patch and a bond joint between the patch and the structure. The bond joint including at least first and second regions respectively having differing properties for releasing strain energy around the inconsistent area at different rates.

Abstract: A patch for reworking an inconsistent area in a composite structure includes a composite laminate patch adapted to cover the inconsistent area and bonded to the structure by a layer of adhesive. The patch includes a plurality of composite plies having a tapered cross section, and at least first and second regions respectively having differing fracture toughnesses.

Abstract: A patch for reworking an inconsistent area in a composite structure includes a composite laminate patch and a layer of adhesive for bonding the laminate patch to the composite structure. The laminate patch has at least first and second regions for releasing strain energy around the inconsistent area respectively at different rates.

Abstract: A method for repairing a pipeline by means of at least one shell that is adapted to the outer contour of the pipeline, wherein the at least one shell is attached to the outer wall of the pipeline using an intermediate layer between the interior of the shell and the outer wall of the pipeline. The intermediate layer is made of an adhesive that can be activated, which is used to substantially completely coat the interior of the at least one shell. The attachment of the shell is carried out by applying a force acting at least in the radial direction, and the activation of the adhesive. A shell that is coated in this manner is also disclosed.

Abstract: Process of masking cooling holes of a gas turbine component with an external surface, comprising a cavity and a plurality of cooling holes before coating the gas turbine component, comprising the steps of first applying a mask material to the cooling holes so that the cooling holes are filled at least closest to the external surface, whereby the mask material contains a substance which fluoresces under ultraviolet light and a filler material. Then the mask material within the cooling holes is thickening. An inspection using ultraviolet light to locate any unwanted residual mask material on the external surface is carried out and unwanted residual mask material is removed before the coating is applied to the external surface of the component and the masked cooling holes. In the end the mask material is removed from the cooling holes.

Abstract: A novel method for refurbishing a rubber disc used in a recycle machine comprises the steps of cleaning and sanding the surface of the disc; priming at least the surface of the disc with a liquid primer or interfacing agent (adhesive); placing the disc in a portion of a mold; charging or filling the mold with a polymer (synthetic rubber or elastomer) mixed with a suitable catalyst, hardener or activator; allowing the synthetic rubber polymer to exothermally cure inside the mold; and withdrawing the disc from the mold. The resulting refurbished disc is characterized by a new outer surface layer (synthetic rubber) adhered to the original rubber disc. In an alternatively preferred method, one or more relatively small holes are formed in the surface of the disc prior to molding the new outer surface layer on the disc whereupon the strength of the bond between the new outer layer and the original disc is enhanced.

Abstract: A method for a repair of materials used in the manufacture of non-structural aircraft interior components includes the steps of laying fiberglass over a damaged surface and adhering the fiberglass with a fast-adhering glue, that includes at least one of cyanoacrylate and a cyanoacrylate activator for repairing the surface, to the damaged surface. A related method that includes applying a cyanoacrylate activator is used for removing pen and pencil marks for a synthetic leather material.

Abstract: A decorative inlay repair method is disclosed. An illustrative embodiment of the method includes providing a decorative inlay having a base, a plurality of adjacent bricks carried by the base and at least one decorative stone carried by the base; providing a structure having an inlay opening; and seating the decorative inlay in the inlay opening.

Abstract: A printhead assembly includes a molded ink manifold, a plurality of printhead integrated circuits, and an adhesive film sandwiched between the ink manifold and the printhead integrated circuits. A manifold bonding surface of the molded ink manifold includes a polymer coating. The polymer coating plugs fissures resulting from a molding process used to mold the ink manifold.

Abstract: A method for repairing/strengthening and crack arrest of pipe, especially metal pipe, in which, first, to cover an insulated material on the position needing repairing/strengthening and crack arrest, then to lay a high strength fiber composite material. The modulus of elasticity of the material used in the invention is close to the metal pipe's, it can be integrated with the pipe and bear the internal pressure with the pipe, thus the final composite pipe reaches required bear capacity, such as, the original most operation pressure of pipe can be recovered; and it can take effect for crack arrest of pipes when pipes happen burst accident. Otherwise, because of the insulated material is used on the bottom layer, it prevent thoroughly from galvanic corrosion between pipe and strengthening material.

Abstract: A process for recycling scrap of shoe stiffener comprising the steps of: 1. Kneading the collected scrap of shoe stiffener, having a core layer of TPU resin material (with filler) sandwiched in between two opposite net fabric layers, to be dense clumps; 2. Freezing the dense clumps to be hard frozen clumps; 3. Crushing the hard frozen clumps to be a crushed product including pellets of resin material, and short fibers; and 4. Extruding the crushed product including pellets and short fibers to produce a regenerated core layer; and covering or laminating two net fabric layers on opposite sides of the regenerated core layer to obtain a regenerated shoe stiffener sheet to enhance environmental protection and prevent from wasting of material resources.

Abstract: A method, in which a damaged site of a composite material structure, for example a wing skin on an aircraft, is repaired, includes the steps of repairing the damaged site with repair material, including adhesive, and at the same time bonding a test fixture, for example a button, at a test site next to the repair, by means of material that is the same as the repair material. The conditions to which the damaged site and the test site are subjected are substantially the same. After repair, the strength of the repair bond may be indirectly assessed by applying a torque to the test fixture, so as to assess the bond strength of the test fixture to the structure.

Abstract: A cushion gum of having a diene rubber and between 5 and 60 phr of a plasticizing hydrocarbon resin having a glass transition temperature greater than about 20° C., 60° C. or even greater than 70° C. and a number average molecular weight less than 2000. The cushion gum may comprise between 10 and 30 phr of the resin in particular embodiments. The plasticizing resin may be a terpene resin comprising units resulting from the polymerization of limonene, alpha pinene, beta pinene or combinations thereof; homopolymers or copolymers of cyclopentadiene (CPD) or dicyclopentadiene (DCPD), homopolymers or copolymers of terpene, homopolymers or copolymers of a C5 cut and mixtures thereof; and/or copolymers of (D)CPD/vinyl-aromatic, of (D)CPD/terpene, of (D)CPD/C5 cut, of terpene/vinyl-aromatic, of C5 cut/vinyl-aromatic and of combinations thereof.

Abstract: A wind blade spar cap laminate repair for wind turbine rotor blades, a repair kit to repair spar cap laminate damage, and a method of repairing damage on wind turbine rotor blades is provided. The wind blade spar cap laminate repair includes a prepared surface, an adhesive region disposed on the prepared surface, and a repair disposed on the adhesive region, wherein the adhesive region sufficiently bonds the repair to the prepared surface to substantially match the mechanical properties of the bulk of the wind turbine rotor blade.

Abstract: A doubler assembly repairs at least one damaged aperture of a composite flange. The doubler assembly includes an insert, an adhesive, and a support. The insert is positioned in the damaged aperture to provide compressive load transfer through the composite flange. The adhesive is positioned directly on at least a portion of the composite flange proximate the damaged aperture. The support is positioned over the adhesive.

Abstract: A wall resurfacing kit for allowing users to quickly and easily resurface a damaged wallpapered surface includes a plurality of rectangular mesh screen sheets. The plurality of mesh screen sheets are made of fiberglass and are directly attachable to the wallpapered surface. The wall resurfacing kit further includes a reinforcing member. The reinforcing member is applied directly onto the mesh screen sheets such that the reinforcing member penetrates through the mesh screen sheets. The reinforcing member directly couples the plurality of mesh screen sheets to the wallpapered surface. The wall resurfacing kit further includes a set of instructions indicating a decoration mode. The decoration mode is used to decorate the wallpapered surface.

Abstract: Compositions and methods of their use to adhere a variety of materials together are disclosed herein. The compositions include at least tetra calcium phosphate, an effective amount of a compound that is structurally similar to phosphoserine, and can be mixed with an aqueous solution. The compositions provide adhesive and cohesive strength in both wet and dry environments and exhibit significant bond strength upon curing.

Abstract: A method and an apparatus impregnate a lining module for repairing a pipe. An end area of the lining module provided with a resin-absorbing layer and an air-tight, outer coating, is introduced into an air-tight sleeve, and an auxiliary introduction device is fixed at an introduction area of the lining module. The transitions between the lining module and the sleeve and between the introduction area and the auxiliary introduction device are closed off in an air-tight manner by at least one sealing device. The auxiliary introduction device is closed off with respect to the ambient by a releasable blocking device in an air-tight manner in such a way that the chamber, formed by the sleeve and the auxiliary introduction device and optionally also the lining module, is closed in an air-tight manner and an introduction chamber accessible from the outside is provided for filling with resin.

Abstract: An apparatus and method for lining sewer pipes that utilize an adjustable form configured to conform to the shape and dimensions of the interior of a man-entry sized pipe line. The adjustable form can be used to position a sheet of liner material immediately adjacent the inner sewer walls. An air cushion system is utilized to reduce friction and drag between the sheet of liner material and form so that the liner sheet can be easily adjusted prior to bonding to the inner walls of the pipe line.

Abstract: A method for forming a ceramic layer on the surface of a turbine component. This method comprises the following steps: (a) providing a turbine component having a surface; (b) providing at least one ceramic tape overlaying the component surface; and (c) manually pressing the at least one ceramic tape against the component surface at a temperature of from about 150° to about 700° F. (from about 66° to about 371° C.) so as to cause the at least one ceramic tape to adhere to the component surface.

Abstract: A method and system for repairing an insulation blanket having a metallized fabric that becomes disbanded from an underlying layer of the insulation blanket. The method includes cutting a first slit in the metallized fabric near a disbanded portion of the fabric, inserting a repair material through the first slit such that the repair material is between the disbanded portion of the fabric and the underlying layer, and adhering the disbonded fabric and the underlying layer to the repair material to restore the functionality of the metallized fabric.

Abstract: A method is disclosed for repairing or strengthening a damaged portion of a pipe. A patch of required dimensions is prepared from a composite laminate having a fabric layer with a plurality of fibers embedded into a cured resin. The pipe is then prepared to receive the patch and the epoxy resin is applied to an outside surface of the patch. The patch is then coiled and secured around a mandrel and transported thereby to the damaged portion of the pipe through an open end thereof, such that during transport through the pipe the patch does not contact the inside surface of the pipe. A bladder inside the coiled patch is pressurized to force the unrolling of the patch to contact the inside surface of the patch. The pressure is maintained against the patch until the epoxy resin is substantially cured, whereupon the bladder is deflated and removed with the mandrel from the pipe. A method of repairing such a pipe while fluid flows therethrough, and a method of repairing a corrugated steel pipe, is also disclosed.

Abstract: A method for reestablishing the electrical continuity of an electrically conductive layer of a composite aircraft wing damaged by a lightning strike or other mechanical event is disclosed in which a copper patch replaced the damaged section of the electrically conductive layer contained. The repair is performed by first removing any surfacers, fasteners, and damaged electrically conductive layer to expose a portion of the underlying composite skin. A copper patch having a copper foil section coupled to an unsupported film adhesive is then introduced onto an underlying composite skin opening contained within an undamaged section of a copper foil grid and covered with resin-impregnated fiberglass material. The film adhesive and resin-impregnated fiberglass material are then cured and fasteners are then reinserted within the fiberglass material, copper patch and underlying composite skin. The surface of the composite wing is then reprimed and repainted to complete the repair.

Abstract: A polyurethaneurea system that includes in some embodiments Parts A and B reaction components for a polyurethaneurea, wherein an exemplary embodiment provides a Part A that comprises between 55 and 75 wt. % of an oligomeric polyol, between 3 and 7 wt. % of an aromatic diamine chain extender, and between 0.1 and 1.5% of a reactivity catalyst; Part B includes between 1 and 15 wt. % of a short aromatic diisocyanate and between 5 and 35 wt. % of an aromatic diisocyanate prepolymer that is the reaction product of a short aromatic diisocyanate and a diol. The polyurethaneurea system may further comprise an elastomer-surface activator comprising a second short aromatic diisocyanate and a second aromatic diisocyanate prepolymer, wherein at least one of the second diisocyanates may be the same as at least one of the diisocyanates of Part B.

Abstract: Paint replacement films of the invention comprise at least one adhesive layer; at least one pigmented layer; and at least one polymer layer that is essentially free of low surface energy materials. In addition, paint replacement composite articles and related methods of the invention comprise a paint replacement film and a topcoat on a surface of the paint replacement film opposite the adhesive layer. Paint replacement films and composite articles of the invention are useful when applied to a variety of articles (e.g., a motorized vehicle such as an aircraft).

Abstract: The invention is a method of using a waterborne acrylic latex roof membrane component as a universal primer to adhere virtually any epoxy or cementitious polymer-modified product or overlay to virtually any substrate without the need for physical preparation of the substrate surface. The present method now makes it possible to cleanly and simply adhere hundreds of coatings from various manufacturers to dozens of various substrates.

Abstract: A repaired composite material component 24 comprises parent composite material 12, a primary region 14 of replacement composite material and a secondary region 26 of replacement composite material which has a greater tendency to debond under loading of the repaired composite material component 24 than the primary region 14.

Abstract: The present application is directed to methods of preparing a wet composite patch for use in various applications, such as, for example, reworking a composite part of an aircraft. The method comprises heating the composite patch to a temperature that causes resin containing gaseous components to flow from the patch through a flow path. The gaseous components are vented from the resin while restricting the flow of resin from the composite patch by restricting the flow of resin through the flow path. Systems for performing the methods of the present application are also disclosed.

Abstract: A method of repairing and renewing a manhole chimney utilizes a circumferentially stretchable liner sleeve which is inserted into the manhole and pressed by an inflatable bladder into engagement with the walls of the manhole chimney. The sleeve is coated with an uncured resin, which is allowed to cure as the sleeve is pressed against the chimney walls, thereby attaching the sleeve to the walls of the manhole chimney. The stretchable sleeve eliminates air spaces between the sleeve and the chimney walls, and precludes formation of undesirable folds in the sleeve. The sleeve stretches circumferentially up to 150% of its unstretched diameter, while having a substantially unstretchable length.

Abstract: A method to join a substrate to an object is disclosed using a curable one or two part adhesive composition comprising an effective amount of a stabilized organoborane amine complex initiator and one or more monomers, oligomers, polymers or mixtures thereof having olefinic unsaturation which is capable of polymerization by free radical polymerization.