Abstract: A one-component epoxy-modified polyurethane and/or urea adhesive includes very high levels of reactive urethane group- and/or urea group-containing tougheners, an epoxy resin and epoxy hardener. These adhesives are formulated to cure at high temperatures and surprisingly provide high elongations, excellent thermal stability and good adhesive properties.

Abstract: An apparatus for infusing a composite structure includes a reservoir configured to receive a volume of resin, a base, a membrane configured to be sealed upon the base, and a flow medium in fluid communication with the reservoir. The flow medium includes a first flow medium portion disposed in contact with at least a portion of the base and a second flow medium portion disposed in contact with at least a portion of the membrane.

Abstract: A system for forming stacked material includes a housing defining an interior space. The housing includes a bottom wall and a side wall coupled to the bottom wall. At least one tool is configured to shape the stacked material. The at least one tool is disposed within the interior space. A membrane extends at least partially over the bottom wall and is spaced a distance from the bottom wall. The membrane is configured to move towards the bottom wall. At least one intensifier mechanism is disposed in the interior space and is configured to induce a force against a portion of the stacked material and against the at least one tool as the membrane is moved towards the bottom wall.

Abstract: An epoxy-based crash durable adhesive composition including: (I) a liquid resin system comprising: (a) at least one epoxy resin; and (b) at least one toughener; wherein the viscosity of the above liquid resin system is less than about 800 Pa s at a temperature of 15° C.; and wherein the viscosity of the above liquid resin system is greater than about 5 Pa-s at a temperature of 60° C.; (II) a solid material comprising: (c) at least one hydrophobic fumed silica, wherein the fumed silica is present in the adhesive composition at a concentration of greater than 5 weight percent; and (III) a curative material comprising: (d) at least one latent heat-activated curing agent; wherein the rheology of the epoxy-based crash durable adhesive composition is such that the adhesive composition is pumpable at a temperature of 15° C.

Abstract: A one component epoxy adhesive composition is comprised of an epoxy resin, a polyurethane based toughener, an epoxy capped toughener comprised of a polymer backbone capped with an epoxy, wherein the polymer backbone is at least partially immiscible in the epoxy resin; and an epoxy curing agent. The one component adhesive composition may have improved impact resistance at low temperatures, such as ?40° C. or less. The epoxy based toughener may be formed by reacting the hydroxyls of a polyol with a stoichiometric excess of cyclic anhydride to form a carboxylic acid capped polymer. The carboxylic acid capped polymer is then reacted with a stoichiometric excess of an epoxy resin having at least two epoxides to form the epoxy capped toughener having epoxide end groups.

Abstract: The invention is directed to a toughener for epoxy adhesives, the toughener comprising both soft and rubber units, and may be described as a capped soft-rubber PU toughener. The invention includes the tougheners and methods of making them, as well as adhesives comprising the inventive tougheners, methods of using the tougheners and adhesives comprising them, and cured inventive adhesives and products comprising them.

Abstract: Room temperature curing, two-component epoxy adhesives useful in bonding oily substrates include a resin side A and a curative side B. The resin side A includes an epoxy resin, a toughening component, a plasticizer and filler, and the curative side B includes a polyetheramine, amine-terminated butadiene rubber and a curing catalyst.

Abstract: A method and an automatic layup system for making a stack of a plurality of composite plies are presented. The automatic layup system includes a stacking assembly located in a first plane and a layup tool located in a second plane parallel to the first plane. The stacking assembly and the layup tool are movable towards each other. The method includes the steps of (a) providing one or more composite sheets between the layup tool and the stacking assembly, (b) generating a first composite ply from the one or more composite sheets, (c) placing the first composite ply on the layup tool by the stacking assembly by bringing the stacking assembly and the layup tool close to each other, and (d) repeating the steps (b) and (c) for generating and placing a second composite ply on the first composite ply, which is placed on the layup tool.

Abstract: A wind turbine is presented. The wind turbine includes a tower, a rotor coupled to the tower, and a plurality of blades coupled to the rotor, wherein each of the plurality of blades comprises a root and a plurality of root inserts positioned circumferentially along the root. Each of the root inserts includes a metal bushing including an outer surface and a plurality of grooves formed at least on the outer surface, a core coupled to the metal bushing, and a plurality of layers wrapped around the metal bushing and the core, wherein a layer of the plurality of layers comprises a different fiber orientation from a fiber orientation of another layer of the plurality of layers.

Abstract: A one-component toughened epoxy-modified polyurethane and/or urea adhesive includes a mixture of dicyandiamide and a dihdyrazide as curing agents. The mixture of curing agents permits the adhesive to be cured at lower temperatures while developing good adhesive and mechanical properties in the cured adhesive.

Abstract: A novel primerless adhesive composition with unique properties in automotive related applications, particularly in glass bonding applications; the process of making thereof.

Abstract: A new polyurethane (PU) adhesive composition with encapsulated hardeners having unique properties in automotive related applications.

Abstract: An epoxy adhesive composition is provided that has superior wash-off resistance after pre-gelling, and may be used, for example, in manufacturing processes, for example, in the automobile industry. The composition also provides unique viscosity profile after pre-gelling to significantly reduce failure mode in subsequent processing steps. In preferred embodiments the adhesive composition comprises an epoxy type resin and a gelling agent selected from polyesterdiols and polyvinyl butyrals.

Abstract: Plant (1) comprising at least one apparatus (2-4) for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy source, which plant (1) comprises at least one module (5) separably connected or connectable with the apparatus (2-4), wherein the plant (1) comprises at least one tunnel structure (7) through which the at least one module (5) is moveable in a tunnel transport direction (10).

Abstract: Aspects of the present invention provide a one component epoxy adhesive composition having improved impact resistance at low temperatures, such as ?40° C. or less. In a first aspect, the adhesive includes one or more epoxy resins; at least one polyurethane based toughener; at least one amphipathic block copolymer; and one or more epoxy curing agents. In a further, aspect epoxy adhesive compositions having improved wash off resistance are also provided.

Abstract: The present invention relates to an apparatus for flow tempering medical irrigation fluids and to a method carried out with the aid of this apparatus.

Abstract: Provided is a waveguide arrangement, comprising a diffractive input coupling element (11), in particular a volume hologram, a diffractive output coupling element (13), in particular a volume hologram, and optionally a beam expansion element (12), in particular a volume hologram. The expansion element (12) and the output coupling element (13) expand a light beam in different directions.

Abstract: The invention relates to resin compositions for epoxy adhesives, comprising a di-functional aromatic epoxy compound. The resin compositions and/or uncured adhesive compositions having low viscosity at low temperatures. Adhesives made therefrom have good strength and bulk properties. The invention includes methods of making and using the compositions, as well as adhesives made from the compositions.

Abstract: A one-component epoxy-modified polyurethane and/or urea adhesive includes very high levels of reactive urethane group- and/or urea group-containing tougheners, an epoxy resin and epoxy hardener. These adhesives are formulated to cure at high temperatures and surprisingly provide high elongations, excellent thermal stability and good adhesive properties.

Abstract: A layup system for use in forming a composite layup structure from a plurality of plies of composite material, wherein an outermost ply of composite material has a removable film adhered thereto. The system includes a robotic device and an end effector coupled to the robotic device. The end effector includes a layer of compressible material configured to compress the plurality of plies of composite material together when positioned over the composite layup structure. The end effector further includes a first suction device configured to grip the removable film adhered to the outermost ply of composite material. The robotic device is configured to translate the end effector relative to the composite layup structure such that the removable film is peeled from the outermost ply of composite material while the first suction device grips the removable film.