Disclosed herein are methods for making asymmetric laminate structures and methods for reducing bow in asymmetric laminate structures, the methods comprising subjecting the laminate structures to at least one thermal cycle comprising cooling the laminate structures to a first temperature near or below room temperature and heating the laminate structures to a second temperature near or below the lamination temperature. Also disclosed herein are laminate structures made according to such methods.

A light-modulating material of which the light transmittance can be controlled over a wide region from visible light to infrared light by voltage application is provided. The light-modulating material comprises a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less.

A system and method of a modular floor assembly and installation on an aircraft is presented in embodiments herein. A floor assembly comprising an underlayment layer and a decorative layer may be assembled to provide an aircraft floor that meets Federal Aviation Regulations. The floor assembly may comprise structural, adhesive, and magnetic layers creating a floor assembly that may be quickly and easily removable for maintenance and access to compartments below the floor assembly.

A method for creating a honeycomb core having venting pathways includes controlling where a resin is applied to sheets to form the venting pathways. A honeycomb substrate is then formed from the sheets.

A laminate comprises a wicking fabric and a polymeric film adhered to both sides of the wicking fabric, wherein the wicking fabric comprises a plurality of holes, the polymeric films on both sides of the wicking fabric are fused together at each hole, and the laminate functions as an air barrier when measured in accordance with ASTM E2178-13, and allows the passage of liquid water as per ASTM E2273-18.

To provide a waterproof sheet for civil engineering, having sufficient strength and elongation even at a low temperature of about −10° C. and having excellent adhesiveness to a structure such as a tunnel. Disclosed is a waterproof sheet for civil engineering, which has a layer (A) including a composition containing an ethylene-vinyl acetate copolymer (a1) and a thermoplastic resin (a2) other than the ethylene-vinyl acetate copolymer (a1), and a silica-containing layer containing silica, wherein the content of the ethylene-vinyl acetate copolymer (a1) in the composition is 30 to 95% by mass, the content of the thermoplastic resin (a2) is 5 to 70% by mass, and the absolute value of the difference between the SP value of the ethylene-vinyl acetate copolymer (a1) and the SP value of the thermoplastic resin (a2) is less than 0.70 (cal/cm.sup.3).sup.1/2.

A structural member including a lightweight core, one or more skins, and a crosslinking nanolayer interposed therebetween that results in significant mechanical strength in the structure. The core is a polymer of reduced density by way of included voids, such as an open or closed cell foam, honeycomb, or corrugated structure. The core polymer has a lower density and may have a higher softening or melting temperature than the polymer skin materials. The core may be discontinuous at the interface with the skin such that only a small percentage of the core surface is actually in contact with the skin compared to the overall area of the interface. The skin may be a thermoplastic layer that attaches to the core material. The skin may be a composite material including non-thermoplastic reinforcements. The crosslinking nanolayer is covalently bonded to the surface of the core material and provides molecular compatibility with the skin material.

A sandwich component comprising: (i) a first main surface with a first cover layer and a second main surface with a second cover layer, the first cover layer and/or second cover layer having an opening, weakening, or marking in a lateral region and/or is provided with the same, (ii) at least one intermediate layer positioned between the first and second cover layers, and (iii) a polymer composition which is arranged between the first and the second cover layers substantially within the intermediate layer and/or in the region of the opening, weakening, or marking. A mechanical connection mechanism is fixed, or can be fixed, directly in the polymer composition through the first cover layer and/or the second cover layer and/or in the lateral region in the region of the opening, weakening, or marking so as to pass through the first cover layer and/or the second cover layer and/or the lateral region.

A method for producing a planar composite component having a core layer (B), which is arranged between and integrally bonded to two cover layers (A, A′), wherein the cover layers contain a cover-layer thermoplastic and wherein the core layer contains a core-layer thermoplastic, comprises the following steps: a) a heated stack with layer sequence A-B-A′ is provided; b) the heated stack (A-B-A′) is pressed; c) the pressed stack is cooled, whereby the planar composite component with consolidated layers integrally bonded to each other is formed. To improve the production method including the producibility of planar 3D components, it is proposed, that at least one of the cover layers (A, A′) in unconsolidated form comprises a fibrous nonwoven layer of 10 to 100 wt.-% thermoplastic fibers of the cover-layer thermo-plastic and 0 to 90 wt.-% of reinforcing fibers having an areal weight of 300 to 3,000 g/m.sup.2; the core layer (B) in unconsolidated form comprises at least one randomly-oriented-fiber nonwoven layer (D) formed from reinforcing fibers and thermoplastic fibers of the core-layer thermoplastic,
and that after the pressing the consolidated core layer(s) has/have an air pore content of <5 vol.-% and the consolidated core layer has an air pore content of 20 to 80 vol-%.

Described herein is an stain and sag resistant acoustic building panel comprising a porous body formed from building material and latex binder, wherein the building material may include fibers and filler and at one of the building materials has been pre-treated with a charge-modifying component, thereby enhancing the sag-resistance of the building panel.