Provided is a tubular body containing SiC fibers having high thermal conductivity. The tubular body containing SiC fibers includes a SiC fiber layer wound in a tubular form, an inner SiC coating layer covering an inner surface of the SiC fiber layer, and an outer SiC coating layer covering an outer surface of the SiC fiber layer. The inner and outer SiC coating layers are bound to each other in gaps provided in the SiC fiber layer.

Described herein is an antiviral face mask and methods of use thereof to inactivate a virus in contact with the face mask. The face mask may include a fibrous material with silicon nitride powder impregnated therein and a layer surrounding the fibrous material. In some embodiments, silicon nitride is present in the fibrous material at a concentration of about 1 wt. % to about 15 wt. %.

Described herein is an antiviral face mask and methods of use thereof to inactivate a virus in contact with the face mask. The face mask may include a fibrous material with silicon nitride powder impregnated therein and a layer surrounding the fibrous material. In some embodiments, silicon nitride is present in the fibrous material at a concentration of about 1 wt. % to about 15 wt. %.

Low molecular weight silicone copolymers prepared by reacting an oxamido ester-terminated silicone with a polyetheramine and a primary or secondary amine are useful in treating fabrics to obtain a soft hand and also hydrophilicity, and can be prepared without the use of highly toxic reagents.

Used is a method for producing a thermal insulation sheet, including: composite-forming including impregnating a nonwoven fabric with a basic sol prepared by adding a carbonate ester to a water glass composition to form a hydrogel-nonwoven fabric composite; surface-modifying including mixing the composite with a silylating agent for surface modification; and drying including removing liquid contained in the composite through drying at a temperature lower than the critical temperature of the liquid under a pressure lower than the critical pressure of the liquid. Used is a thermal insulation sheet including an aerogel and a nonwoven fabric, where the thermal insulation sheet exhibits a compressibility of 40% or lower at 0.30 to 5.0 MPa.

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.

Used is a method for producing a thermal insulation sheet, including: composite-forming including impregnating a nonwoven fabric with a basic sol prepared by adding a carbonate ester to a water glass composition to form a hydrogel-nonwoven fabric composite; surface-modifying including mixing the composite with a silylating agent for surface modification; and drying including removing liquid contained in the composite through drying at a temperature lower than the critical temperature of the liquid under a pressure lower than the critical pressure of the liquid. Used is a thermal insulation sheet including an aerogel and a nonwoven fabric, where the thermal insulation sheet exhibits a compressibility of 40% or lower at 0.30 to 5.0 MPa.

Dimensionally-stable fibrous structures including ceramic-coated melt-blown nonwoven fibers made of a flame-retarding polymer and processes for producing such fire-resistant nonwoven fibrous structures. The melt-blown fibers include poly(phenylene sulfide) in an amount sufficient for the nonwoven fibrous structures to pass one or more fire-resistance test, e.g. UL 94 V0, FAR 25.853 (a), FAR 25.856 (a), and CA Title 19, without any halogenated flame-retardant additive, and have a ceramic coating. The melt-blown fibers are subjected to a controlled in-flight heat treatment at a temperature below a melting temperature of the poly(phenylene sulfide) immediately upon exiting from at least one orifice of a melt-blowing die, in order to impart dimensional stability to the fibers. The nonwoven fibrous structures including the in-flight heat-treated melt-blown fibers exhibit a Shrinkage less than a Shrinkage measured on a nonwoven fibrous structure including only fibers not subjected to the controlled in-flight heat treatment operation, generally less than 15%.

The present invention relates to improved bentonite barrier compositions, and more particularly, to the use of geosynthetic clay liners including these improved bentonite barrier compositions having enhanced low permeability over time in containment applications. A geosynthetic clay liner comprises at least one geosynthetic layer; and a bentonite barrier composition comprising bentonite and a polyanionic starch, wherein the polyanionic starch is carboxymethyl starch.

The present invention relates to improved bentonite barrier compositions, and more particularly, to the use of geosynthetic clay liners including these improved bentonite barrier compositions having enhanced low permeability over time in containment applications. A geosynthetic clay liner comprises at least one geosynthetic layer; and a bentonite barrier composition comprising bentonite and a polyanionic starch, wherein the polyanionic starch is carboxymethyl starch.