A composite yarn comprising a continuous multifilament core yarn incorporated in a matrix is characterised in that the matrix comprises at least one polymer material and at least one reinforcing filler, the reinforcing filler being formed from functionalized particles, said particles having a median size (d.sub.v5o) of less than 40 μm. A process for manufacturing such a composite yarn, comprises at least one step of depositing, by coating or extrusion, a matrix comprising a polymer and a reinforcing filler, onto a core yarn. A textile surface comprises at least one such composite yarn.

The disclosure provides basemats for fibrous panels, including a mineral wool present in an amount of at least about 60 wt %, based on the total weight of the basemat, a mineral filler, a cellulose present in an amount of about 1 wt % to about 3 wt %, based on the total weight of the basemat, and a binder. The basemat has a backing side and a facing side. Also provided are fibrous panels including the basemat of the disclosure and a porous veil.

An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition, and the glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less.

An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition, and the glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less.

A perovskite optical element includes a light guiding unit and a luminescent layer. The light guiding unit is configured to conduct light and serves as a resonant cavity. The luminescent layer is a thin film made of perovskite material and clads the light guiding unit. The luminescent layer is configured to be excited by an excitation module to emit light. The light is conducted and output by the light guiding unit. A manufacturing method of a perovskite optical element includes preparing a dip coating solution; dipping a single crystal optical fiber in the dip coating solution for one hour, removing the single crystal optical fiber out of the dip coating solution, and drying the single crystal optical fiber; and placing the single crystal optical fiber into a tube furnace, heating the crystal optical fiber, and introducing synthetic molecules into the tube furnace.

A perovskite optical element includes a light guiding unit and a luminescent layer. The light guiding unit is configured to conduct light and serves as a resonant cavity. The luminescent layer is a thin film made of perovskite material and clads the light guiding unit. The luminescent layer is configured to be excited by an excitation module to emit light. The light is conducted and output by the light guiding unit. A manufacturing method of a perovskite optical element includes preparing a dip coating solution; dipping a single crystal optical fiber in the dip coating solution for one hour, removing the single crystal optical fiber out of the dip coating solution, and drying the single crystal optical fiber; and placing the single crystal optical fiber into a tube furnace, heating the crystal optical fiber, and introducing synthetic molecules into the tube furnace.

A method for thermally protecting a part according to which a protective screen is placed in an in-use position in which the screen physically isolates at least one portion of the part from a heat source. The heat source is configured to bring the temperature of the at least one portion of the part to a temperature between 400° C. and 900° C. in the absence of the protective screen. The protective screen includes a substrate of glass strands at least partially coated with a coating that includes protective particles of a crystalline material that have a melting point above 1000° C. and is composed of one or more oxides in an amount of more than 95 wt. %. The coating covers more than 50% of the outer surfaces of more than 50% of the number of strands of the substrate.

A method for thermally protecting a part according to which a protective screen is placed in an in-use position in which the screen physically isolates at least one portion of the part from a heat source. The heat source is configured to bring the temperature of the at least one portion of the part to a temperature between 400° C. and 900° C. in the absence of the protective screen. The protective screen includes a substrate of glass strands at least partially coated with a coating that includes protective particles of a crystalline material that have a melting point above 1000° C. and is composed of one or more oxides in an amount of more than 95 wt. %. The coating covers more than 50% of the outer surfaces of more than 50% of the number of strands of the substrate.

Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels.

Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels.