A cover window includes a glass fiber composite layer including a first glass fiber layer and a first glass disposed on a first surface of the glass fiber composite layer. The first glass fiber layer includes unidirectional glass fibers apart from each other and each extending in a first direction, and a modulus of the first glass fiber layer in the first direction is greater than a modulus of the first glass fiber layer in a second direction perpendicular to the first direction.

The present invention relates to the field of a protection system based on composite material used in ballistics. The application relates to a two-steps light and heat curable resin composition, a process of forming in a first step a prepreg using said resin and in a second step a protection system comprising the laminated composite of the invention.

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 instrument having a vacuum chamber, wherein a wall of the vacuum chamber includes a layer of carbon fiber reinforced thermoset having a thickness in a range of 1-10 mm, a first and a second layer of ceramic material having a thickness in a range of 40-60 μm, and a layer of aluminum having a thickness in a range of 0.5-10 mm. The first layer of ceramic material is positioned between the layer of carbon fiber reinforced thermoset and the layer of aluminum. The layer of aluminum is positioned between the first layer of ceramic material and the second layer of ceramic material. The second layer of ceramic material is positioned most to a side of an interior surface of the wall of the vacuum chamber.

A shear pin assembly for securing to a face sheet of a honeycomb core sandwich panel structure and to engage a support structure, which includes a head member having a first width dimension and a neck section secured to the head member with the neck section having a second width dimension less than the first width dimension. Further included is a flange secured to the neck section with the flange extending in a direction away from the neck section and a pin member which extends from the flange in a direction away from the head member.

A resin composition includes 100 parts by weight of a prepolymer and 100 parts by weight to 250 parts by weight of a spherical silica prepared by vaporized metal combustion, wherein: the prepolymer is prepared by subjecting a reaction mixture to a prepolymerization reaction; the reaction mixture includes a maleimide resin, an amino-modified silicone and cyclohexanone, and relative to a total of 100 parts by weight of the maleimide resin, the amino-modified silicone and the cyclohexanone, the reaction mixture includes 60 parts by weight to 80 parts by weight of the maleimide resin, 15 parts by weight to 30 parts by weight of the amino-modified silicone and 2 parts by weight to 15 parts by weight of the cyclohexanone; the reaction mixture does not include m-aminophenol or p-aminophenol; and the amino-modified silicone has an amino equivalent of 750 g/mol to 2500 g/mol. The resin composition may be used to make various articles, such as a prepreg, a resin film, a laminate or a printed circuit board, and at least one of the following improvements can be achieved, including varnish transparency, varnish sedimentation property, glass transition temperature, X-axis coefficient of thermal expansion, T300 thermal resistance, resin cluster and resin filling property.

The present disclosure relates generally to roofing elements and methods for making them. In one embodiment, the disclosure provides a roofing element in the form of a roofing shingle that includes a body of a foamed cured cross-linked polymer, the body having a top surface and a bottom surface, the body extending substantially in a plane and having a thickness in the range of 0.5 mm to 35 mm; and a layer of weather-resistant roofing granules disposed on and adhered at the top surface of roofing element. The roofing element can be made by providing a body of wet foamed curable composition, and allowing the curable composition to cure to provide the body of foamed cured cross-linked polymer.

A vehicle trim component according to various implementations comprises a first layer and a second layer. The first layer comprises a first surface and a second surface, the second surface coupled to a surface of the second layer. The first layer is formed from carbon fiber and thermoset resin and defines a plurality of holes and/or gaps. The first layer further comprises a color pattern and the second layer comprises a different color pattern, the color pattern of the second layer being visible through the holes and/or gaps in the first layer when viewed from the first surface of the first layer.

A leather-like sheet includes: a fiber base material; an intermediate resin layer stacked on one surface of the fiber base material; and a surface resin layer stacked on the intermediate resin layer. The surface resin layer contains a polyether-based polyurethane and spherical fine particles having a heat resistance at 200° C., and has a content ratio of the spherical fine particles of 5 to 40 mass %. The spherical fine particles have a specific heat of 0.95 kJ/(kg.Math.K) or more, a particle size D.sub.50 (median diameter) at a cumulative distribution of 50 vol %, of 2.5 to 10 μm, and a particle size D.sub.10 at a cumulative distribution of 10 vol % of the spherical fine particles which satisfies a condition that a particle size dispersity D.sub.50/D.sub.10≤3.

A reinforcing material that includes a resin layer and a constraining layer disposed on the resin layer. The resin layer contains a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent. The thermosetting resin contains a flexible epoxy resin. The tackifier resin has a softening temperature of 75° C. or more and 100° C. or less. The tackifier resin has a bromine value of 30 gBr.sub.2/100 g or more.