A water-soluble film comprising a mixture of a polyvinyl alcohol (PVOH) resin, a plasticizer, and a metal salt, wherein the metal salt is present in the water-soluble film in an amount sufficient to reduce the enthalpy of melting of the film by at least 20% compared to the enthalpy of melting of an otherwise identical film not comprising the metal salt.

A roofing composite membrane includes a base layer including a first thermoplastic polyolefin. A weight of the base layer is between 5 and 25 grams per square foot. A coating layer at least partially coats the base layer. The coating layer includes at least one inorganic additive, and a second thermoplastic polyolefin including polypropylene and having a melt flow rate between 0.5 grams per 10 minutes and 12 grams per 10 minutes.

A method of manufacturing a composite product includes recovering a wet composite waste from at least one of the manufacturing process or an end-of-life product. The wet composite waste includes a first resin and a plurality of first fibers that are bound together with the first resin. The method also includes grinding the wet composite waste after recovering the wet composite waste. The method also includes mixing the wet composite waste with the second resin into a homogeneous mixture and placing the homogeneous mixture into a cavity. The method includes curing the second resin of the homogeneous mixture such that the homogenous mixture hardens to form a composite product that includes the first resin, the second resin, and the plurality of first fibers.

A method for rapidly fabricating or repairing a fiber reinforced composite may include the use of a covalent adaptable network polymer (CAN) powder for encapsulating reinforcing fibers or welding to a CAN matrix. The fiber reinforced composite may be formed or repaired by applying CAN powder to reinforcing fibers or to a damaged area of a fiber reinforcing composite and compressing the CAN powder with the reinforcing fibers or the damaged area of the fiber reinforced composite at a relatively low temperature, temperature and processing time to form a CAN matrix. The method may be configured for fabricating a fiber reinforced composite having specific desired material properties by varying the arrangement and materials used.

By integration of the laminated composite layers to each other, a PP-FRP member having excellent high strength shape-stability and a manufacturing method thereof are provided. A PP-FRP member 100 comprises a plurality of composite layers 111-114 having sheet-like textiles and polypropylene infiltrated and anchored within mesh of the textiles, wherein the plurality of composite layers 111-114 are laminated, the adjacent textiles are in contact with each other, and the polypropylene is filled and integrated within the mesh of the textiles. Thus, the laminated composite layers 111 to 114 are integrated with each other, whereby a high-strength PP-FRP member having excellent shape-stability can be obtained.

A method for forming a heated thermoplastic composite material into a closed profile using a tooling includes a) forming, during a first forming stage, a heated thermoplastic composite in a first space between a male tooling part and a female tooling part, b) forming, during a second forming stage, the thermoplastic composite material by engaging a first segment and/or second segment of the thermoplastic composite material with at least one auxiliary tooling part to thereby bring the first and second segments closer together, and c) forming, during a third forming stage, the thermoplastic composite material by pressing, using a pressing tooling part, the thermoplastic composite material around the male tooling part thereby creating a seam between the first and second segment.

A modified straw waste composite board and a preparation method thereof. The composite board sequentially comprises a surface layer, a substrate layer, a weight reduction layer, and a protective layer from top to bottom. The invention significantly enhances the comprehensive performance of composite boards by introducing innovative materials such as phosphorus-doped straw-based porous carbon, zinc oxide quantum dots, modified emulsified asphalt, and nano-silicon dioxide. Straw waste has abundant pore structures and excellent mechanical properties, which can improve the flame retardancy and mechanical properties of composite boards; zinc oxide quantum dots can extend the lifespans of composite boards; through scientifically designed components and advanced manufacturing processes, the invention solves the shortcomings of traditional boards, and achieves high-value utilization of agricultural waste, providing new ideas and technical support for the development and application of environmentally friendly composite materials.

The present invention relates to a spar cap for a wind turbine blade and a method for manufacturing said spar cap. The spar cap comprises: a plurality of reinforcing fibre layers comprising unidirectionally oriented reinforcement fibres, wherein the plurality of reinforcing fibre layers are arranged such that the spar cap tapers in thickness towards a first longitudinal end, and a number of first fibre skin layers arranged on a first surface of the plurality of reinforcing fibre layers, and a number of second fibre skin layers arranged on a second surface of the plurality of reinforcing fibre layers, such that the plurality of reinforcing fibre layers are arranged between the number of first fibre skin layers and the number of second fibre skin layers. The number of first fibre skin layers and the number of second fibre skin layers extend beyond the plurality of reinforcing fibre layers towards the first longitudinal end of the spar cap, and the first longitudinal end of the spar cap is serrated along a transverse direction, forming a first serrated section.

An insulation component manufacturing method for manufacturing flow-tight, light-weight, sustainable insulation components for vehicles, the insulation component having at least one tufted textile top cloth, a film as the steam-and air-tight flow-tight layer and an absorber layer from a nonwoven having fibers that run vertically upwards relative to the surface, and is manufactured by means of at least one steam vacuum tool. Also, a flow-tight, light-weight, sustainable insulation component for vehicles.

A multiple layer material (11) comprising an extruded profile (27) and at least one lamination material (28, 29) adhered to at least one surface (32, 33) of the extruded profile (27) to form the multiple layer material (11). The lamination material (28, 29) is formed with a structure with indentations (48), and the multiple layer material (11) comprises a melt bond and a mechanical bond (41) between the extruded profile (27) and the lamination material (28, 29), wherein said melt bond is formed by at least partially melting the material of the surface (32, 33) of the extruded profile (27) and at least partially melting only a part of the thickness of the lamination material (28, 29), wherein said mechanical bond (41) is formed by that the material at the at least partially melted surface (32, 33) of the extruded profile (27) is brought into the indentations of the lamination material (28, 29), and wherein the lamination material, at least before it is adhered to the extruded profile, is permeable to air. Disclosed is also a process for producing the multiple layer material.