Provided are an electroosmotic pump, including: a membrane; a first electrode which is provided on one surface of the membrane, including a porous support including an insulator and an electrochemical reaction material formed on the porous support; and a second electrode which is provided on the other surface of the membrane, including a porous support including an insulator and an electrochemical reaction material formed on the porous support, and a fluid-pumping system including the electroosmotic pump.

Latent epoxy resin formulations are suitable for liquid impregnation processes for production of fiber composite materials.

The present disclosure is directed to a method of manufacturing a rotor blade for a wind turbine. The method includes providing a blade mold of the rotor blade. Another step includes placing an outer skin layer in the blade mold. The method also includes placing one or more structural inserts in the blade mold atop the outer skin layer as a function of a load of the rotor blade. Further, each of the structural inserts includes a plurality of cells arranged in a predetermined pattern. Further, the cells have varying cell sizes. The method also includes placing an inner skin layer atop the one or more structural inserts and securing the outer skin layer, the one or more structural inserts, and the inner skin layer together to form the rotor blade.

Wind turbine rotor blade components including pultruded rods and methods of manufacturing the same are disclosed. More specifically, the rotor blade component includes a plurality of pultruded rods housed within an enclosed primary outer casing. The enclosed primary outer casing includes a hollow interior, a root end, and an opposing tip. As such, each of the plurality of pultruded rods is received within the enclosed primary outer casing and secured therein via a first resin material. Further, an arrangement of the plurality of pultruded rods within the primary outer casing and a relationship of a maximum dimension of each of the plurality of pultruded rods and a maximum dimension of the enclosed primary outer casing are configured to maximize flexibility of the rotor blade component.

The invention relates to structural adhesive compositions and more particularly to two-component (2K) structural adhesive compositions. The two components chemically react to bond structural surfaces. N-(3-Aminopropyl)cyclohexylamine (APCHA) has been found to be an improved curing agent for use with epoxy resins in 2K adhesive compositions. APHCA exhibits favorable features including viscosity, pot life and reactivity, and adhesive and thermal performance after curing with epoxy resin. These features and its unique chemistry allow the use of APCHA in curing agent formulations for structural adhesives, in particular wind turbine blade adhesives. APCHA solves issues with viscosity build-up, working time, through-cure, compatibility and adhesive performance that cannot be addressed with the commonly used amine formulations.

A rotor blade for a wind turbine may generally include a first blade component formed from a first fiber-reinforced composite including a first thermoplastic resin material and a second blade component configured to be coupled to the first blade component at a joint interface. The second blade component may be formed from a second fiber-reinforced composite including a second thermoplastic resin material, wherein the second thermoplastic resin material differs from the first thermoplastic resin material. The rotor blade may also include an additional layer(s) of thermoplastic resin material positioned on or integrated into the second fiber-reinforced composite at the joint interface that differs from the second thermoplastic resin material. Moreover, the first thermoplastic resin material of the first fiber-reinforced composite may be welded to the additional layer(s) of the thermoplastic resin material to form a welded joint at the joint interface between the first and second blade components.

A spar cap for a rotor blade of a wind power installation, having a longitudinal extent from a first end to a second end, a transverse extent orthogonal to the longitudinal extent, and a thickness orthogonal to the longitudinal extent and to the transverse extent. A method for producing a spar cap as mentioned at the outset. The spar cap has a longitudinal extent from a first end to a second end, a transverse extent orthogonal to the longitudinal extent, and a thickness orthogonal to the longitudinal extent and to the transverse extent, at least two tiers of a first fiber composite material, and at least one tier of a second fiber composite material, wherein the first fiber composite material has a matrix material and/or fibers which is/are different from that/those of the second fiber composite material, the second fiber composite material is disposed in a portion adjacent to the second end, in the direction of the thickness between the at least two tiers of the first fiber composite material, and the at least one tier of the second fiber composite material terminates ahead of the second end.

A wind turbine blade, extending longitudinally root end to tip end, having a load carrying structure, a shell body and a lightning protection system is described. The load carrying structure is fiber-reinforced polymer in a plurality of stacked layers comprising electrically conductive fibers. The lightning protection system comprises a lightning receptor arranged freely accessible in or on the shell body and a lightning down-conductor electrically connected to the lightning receptor and is configured to be electrically connected to a ground connection. The blade further comprises a potential equalisation system providing a potential equalising connection between a number of the electrically conductive fibers of the load carrying structure and the lightning protection system. The system comprises a dissipating element made of an electrically conductive material which in turn comprises at least one transverse connector arranged to extend transverse through a thickness of the stacked fiber layers and configured to dissipate.

A method of making a wind turbine blade in a blade mould is described. The wind turbine blade comprises a plurality of elongate reinforcing structures each comprising a stack of strips of fibre-reinforced polymeric material, and the method comprises: stacking strips of fibre-reinforced polymeric material to form a plurality of stacks (40), each defining a longitudinal axis; aligning the stacks relative to one another in an alignment zone outside the blade mould; supporting the stacks to maintain their relative alignment; transferring the plurality of stacks into the blade mould simultaneously while maintaining the relative alignment of stacks as the stacks are transferred; and integrating the stacks with other blade materials forming the blade in the blade mould. An apparatus for use in the method is also described.

A method of making a wind turbine blade is described. The blade comprises an outer shell having a laminate structure. The method comprises providing a blade mould (82) defining a shape of at least part of the outer shell of the blade. The mould extends in a spanwise direction between a root end (94) and a tip end (96), and extends in a chordwise direction between a leading edge (90) and a trailing edge (92). The method further includes providing a plurality of dry plies (66) comprising dry structural fibrous material and a plurality of prepreg (68) plies comprising structural fibrous material impregnated with resin. The plurality of dry plies and the plurality of prepreg plies are arranged in the mould to form a plurality of layers of the laminate structure of the outer shell of the blade. The plies are arranged in the mould such that the dry plies are interleaved with the prepreg plies to form a hybrid shell structure in which the plies are arranged in a staggered relationship such that corresponding edges of the dry plies are offset from one another in the spanwise and/or chordwise direction of the mould and/or corresponding edges of the prepreg plies are offset from one another in the span-wise and/or chordwise direction of the mould.