Co-curable epoxy-based composite materials coated with co-curable polyurethane-based coating materials to form co-curable and co-cured polyurethane coated epoxy-based composite materials, with the polyurethane-based coating materials comprising UV-stabilizer agents and cure control agents are disclosed, along with components and large structures comprising the co-cured materials.

A multilayer film includes pluralities of first layers and polymeric second layers arranged along a thickness direction of the multilayer film. The first and second layers having different compositions. At least one layer of the multilayer film includes at least one polymer and metal oxide nanoparticles dispersed in the at least one polymer. The at least one polymer includes a first polymer including (meth)acrylic acid monomer units. The metal oxide nanoparticles are surface modified with a carboxylic acid silane surface modifying agent.

A rearview system may comprise a light sensor assembly having: a photosensor operable to detect light and generate a signal based, at least in part, on the detected light; a dichroic filter in optical communication with the photosensor and operable to filter light; and a rearview assembly having an electro-optic element may comprise an electro-optic medium and operable to variably change the amount of light passing through the electro-optic medium based, at least in part, on the signal. The dichroic filter may be configured to substantially inhibit light having a wavelength of less than 400 nm or greater than 650 nm from transmitting therethrough.

Described herein are UV reflective particles, and methods of forming UV reflective particles, comprising extruding a film having a plurality of alternating layers of polycarbonate (PC) and poly(methyl methacrylate) (PMMA), wherein each layer is less than 150 nm thick, and grinding the film into particles having a median particle size less than 200 microns.

A hybrid metal composite (HMC) structure comprises tiers comprising fiber composite material structures, and additional tiers longitudinally adjacent one or more of the tiers and comprising perforated metallic structures and additional fiber composite material structures laterally adjacent the perforated metallic structures. Methods of forming an HMC structure, and related rocket motors and multi-stage rocket motor assemblies are also disclosed.

A concrete construction made by 3D concrete printing having two or more layers of cementitious material extruded one above the other, and a reinforcing structure reinforcing the two or more layers. The reinforcing structure has at least two flexible longitudinal elongated steel elements running in lengthwise direction, and one or more flexible transverse steel elements forming an angle with the lengthwise direction so that these flexible transverse steel elements are present in the two or more layers. The structure also has a positioning element for positioning the at least two flexible longitudinal elongated elements and the flexible transverse steel elements, a polymer coating or yarns making stitches. The polymer coating or the stitches are applied on the at least two flexible longitudinal elongated steel elements, on the flexible transverse steel elements and on the positioning element thereby making a bond.

An engineered wood product with at least one engineered-wood substrate or core layer (such as, but not limited to, OSB), with a connectivity layer configured to reflect RF signals (e.g., wifi and/or cellular signals), thereby enhancing connectivity in adjacent or proximate spaces or areas. The connectivity layer may be a metallic material, such as, but not limited to, aluminum or copper. The layer may be a sheet or film or foil of the metallic material applied to the surface(s), or integrated into the interior, of the substrate or core layer. The layer also may be a coating or deposited layer. A connectivity layer may be “sandwiched” between two or more engineered-wood substrates, thereby forming a composite panel or product. The surface of the connectivity layer may be embossed or patterned.

A glass stack structure includes: a carrier plate having a width in a first direction and a length in a second direction; a stack glass on the carrier plate and including mother glasses sequentially stacked therein; adhesive lines including a high viscous material and arranged at peripheral portions of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, and the adhesive lines includes wave lines extending in the second direction and spaced apart from each other in the first direction and linear lines extending in the first direction and spaced apart from each other in the second direction; and an adhesive layer including a low viscous material and covering a cell area of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, where the cell area is defined by the wave lines and the linear lines.

A multi-layer structure includes a glass layer having a thickness of greater than or equal to 10 μm and less than or equal to 200 μm; and a resin layer. A number of unit lamination structures in a thickness direction of the multi-layer structure is greater than or equal to 5 and less than or equal to 20,000, the unit lamination structure being a lamination structure composed of the glass layer and the resin layer.

In an embodiment, an adhesive sheet has an expandable adhesive layer 2 on one side or both sides of a base 1, wherein the expandable adhesive layer 2 contains an epoxy resin including a polyfunctional epoxy resin, a phenol resin as a curing agent, an imidazole-based compound as a curing catalyst, and a temperature-sensitive foaming agent. The adhesive sheet has properties in good balance, such as fast curability, heat resistance, and adhesiveness, and also excellent properties such as thermal conductivity attributed to a good filling property.