A method of manufacturing at least one structural panel (20) for an engineering structure comprises conveying a layered structure (40) through a roller assembly comprising at least one pair of heating rollers (50) and at least one pair of cooling rollers (52), where the cooling rollers are at a lower temperature than the heating rollers. The layer structure comprises a thermoplastic foam layer 24 and at least one skin layer (22). The heating rollers 0 heat the skin layer (22) to melt at least part of the foam layer (24) adjacent to the skin layer (22) and bond the foam layer (24) to the skin (22). The cooling rollers (52) cool the layered structure (40) so that the thermoplastic resolidifies, retaining its bond with the skin to form the bonded panel (20). This approach greatly reduces manufacturing costs for structural panels.

A composite board is formed from binding a cover layer to a base layer, wherein the base layer has a composition comprising one or more of the following ingredients: magnesium oxide, recycled magnesium oxide, fibrous chips, wood chips, bamboo chips, chemical additive and water. A method of manufacturing the composite board includes providing the base layer, which includes preparing a semi-arid mixture of the above ingredients, and pouring the mixture through a funnel onto a conveyor belt. The conveyor belt passes the mixture through a series of rollers to remove excess liquid. The layer is cut into panels, which are heat before being sprayed with dried magnesium oxide. A binding agent is applied to one side of the base layer. The cover layer has a bottom surface which is then aligned and bonded to one side of the base layer.

Disclosed is a method for producing a prepreg, the prepreg having: a reinforcing fiber layer including reinforcing fibers and a resin composition containing component (A), component (B), and component (C), the reinforcing fibers being impregnated with the resin composition in between the fibers; and a surface fiber layer provided on the surface of the reinforcing fiber layer and including a fabric including polyamide fibers and a resin composition containing component (A), component (B), and component (C), the polyamide fibers being impregnated with the resin composition in between the fibers. The method for producing a prepreg includes a disposition step of disposing the fabric on the surface of a reinforcing fiber base material and an impregnation step of supplying a resin composition to the reinforcing fiber base material and impregnating the reinforcing fibers with the resin composition in between the fibers.

A method of making an aluminum alloy-resin composite and an aluminum alloy-resin composite obtained by the same are provided. The method may comprise: S1: anodizing a surface of an aluminum alloy substrate to form an oxide layer on the surface, in which the oxide layer includes nanopores; S2: immersing the resulting aluminum alloy substrate obtained at step S1 in an alkaline solution having a pH of about 10 to about 13, to form corrosion pores on an outer surface of the oxide layer, wherein the alkaline solution is an aqueous solution including at least one selected from a soluble carbonates, a soluble alkali, a soluble phosphate, a soluble sulfate, and a soluble borate; S3: injection molding a resin onto the surface of the resulting aluminum alloy substrate in step S2 in a mold to obtain the aluminum alloy-resin composite.

A surrogate multilayered material and manufacturing method thereof includes a first fiber reinforced layer, the first reinforced layer including a crosslinked polymer and fibers, and a second fiber reinforced layer, the second reinforced layer including the crosslinked polymer and the fibers. A foam layer is disposed between the first and second fiber reinforced layers. Opposite faces of the foam layer are in direct contact with the first fiber reinforced layer and the second fiber reinforced layer. The foam layer has a compressive strength of about 3.5 to about 4.5 MPa, when measured as per ASTM-D-1621-73, and a shear strength of 1.50 to about 2.15 MPa, when measured as per ASTM-C-273.

An adhesive film with excellent cuttability with respect to both a base layer and a surface layer or layers laminated thereon is provided, without significant formation of adhesive burrs in various shearing processes. The adhesive film includes a support member and an adhesive layer laminated on at least one side of the support member. The adhesive layer has a laminate structure having a base layer made of a resin-based adhesive and laminated on the surface of the support member and a surface layer made of a resin-based adhesive and laminated on the base layer. The base layer is non-directional and has lengthwise and widthwise shearing strengths of 2 g to 2000 g [200 mm/min, 25 mm] in the thickness range of 2 μm to 60 μm. The base layer has a shearing strength of 1.5 to 200 times the shearing strength of the surface layer.

An interlayer structure having a cellulose ester layer for use in structural laminates is described herein. The cellulose ester layer provides rigidity and support to multilayer interlayers comprising an array of different layers. Due to the diverse properties of the cellulose ester layers, the present interlayers can be useful in producing structural laminates having high stiffness and which possess good optical clarity for a variety of applications, including outdoor structural applications.

An interlayer structure having a cellulose ester layer for use in structural laminates is described herein. The cellulose ester layer provides rigidity and support to multilayer interlayers comprising an array of different layers. Due to the diverse properties of the cellulose ester layers, the present interlayers can be useful in producing structural laminates having high stiffness and which possess good optical clarity for a variety of applications, including outdoor structural applications.

An interlayer structure having a cellulose ester layer for use in structural laminates is described herein. The cellulose ester layer provides rigidity and support to multilayer interlayers comprising an array of different layers. Due to the diverse properties of the cellulose ester layers, the present interlayers can be useful in producing structural laminates having high stiffness and which possess good optical clarity for a variety of applications, including outdoor structural applications.

An interlayer structure having a cellulose ester layer for use in structural laminates is described herein. The cellulose ester layer provides rigidity and support to multilayer interlayers comprising an array of different layers. Due to the diverse properties of the cellulose ester layers, the present interlayers can be useful in producing structural laminates having high stiffness and which possess good optical clarity for a variety of applications, including outdoor structural applications.