A multilayer material for use as a thermal insulation barrier and/or flame barrier in a rechargeable electrical energy storage system is provided. The multilayer material comprises at least one inorganic fabric layer bonded to a nonwoven layer comprising inorganic particles and inorganic fibers by an inorganic adhesive, wherein the inorganic adhesive. The inorganic adhesive can be a modified inorganic adhesive comprising at least 99 wt. % inorganic constituents and an organic additive of at least 0.01 wt. % and less than 1 wt. % based on a total solids content of the inorganic adhesive.

Described herein is an acoustic building panel comprising: a body comprising a fibrous material and having a first major surface opposite a second major surface and a side surface extending there-between, the fibrous material comprising polyester fiber in an amount of at least 70 wt. % based on the total weight of the fibrous material; wherein the body has a bulk density as measured between the first major surface, the second major surface, and the side surface, the bulk density ranging from about 4.8 lb./ft.sup.3 to about 6.0 lb./ft.sup.3.

A multilayer material for use as a thermal insulation barrier and/or flame barrier in a rechargeable electrical energy storage system is provided. The multilayer material comprises at least one inorganic fabric layer bonded to a nonwoven layer comprising inorganic particles and inorganic fibers by an inorganic adhesive, wherein the inorganic adhesive. The inorganic adhesive can be a modified inorganic adhesive comprising at least 99 wt. % inorganic constituents and an organic additive of at least 0.01 wt. % and less than 1 wt. % based on a total solids content of the inorganic adhesive.

A thermal insulation and fire protection felt product is provided. The felt product includes a first layer including a first plurality of nonwoven mechanically entangled oxidized polyacrylonitrile (PAN) precursor fibers bonded together by a first plurality of melted thermoplastic polyphenylene sulfide (PPS) fibers homogeneously mixed with the first plurality of mechanically entangled PAN precursor fibers. The first plurality of melted thermoplastic PPS fibers form a matrix of bond points between individual fibers of the first plurality of mechanically entangled PAN fibers. A second layer includes a second plurality of nonwoven mechanically entangled oxidized PAN precursor fibers bonded together by a second plurality of melted thermoplastic PPS fibers homogeneously mixed with the second plurality of mechanically entangled PAN precursor fibers. The second plurality of melted thermoplastic PPS fibers form a matrix of bond points between individual fibers of the second plurality of mechanically entangled PAN fibers.

A radon gas and/or moisture abatement system (or method) is located under the concrete slab of a building. The system (or method) includes a multilayered mat having a first layer, a second layer, and a third layer sandwiched between the first layer and the second layer. The first layer is non-permeable and faces the concrete slab. The third (or sandwiched) layer is an entangled net. The second layer is permeable layer. The layers are bonded together. Whereby radon gas and/or moisture are inhibited from entering the building by passing through and collecting in the multilayer product.

A depth filter with excellent filtration accuracy and pressure resistance performance even for fluids containing high density and high viscosity powder fine particles. A depth filter having a base material layer, a filtration layer, and a skin layer, in that order, wherein: the substrate layer and the skin layer are layers made by a nonwoven fabric being wound and thermally fused; the filtration layer is a laminate in which at least a nonwoven fabric and a net are laminated, being wound twice or more; and the nonwoven fabric contained in the filtration layer contains a mixed-fiber nonwoven fabric containing two or more types of fibers with mutually different average fiber diameters.

A multilayer material for use as a thermal insulation barrier and/or flame barrier in a rechargeable electrical energy storage system is provided. The multilayer material comprises at least one inorganic fabric layer bonded to a nonwoven layer comprising inorganic particles and inorganic fibers by an inorganic adhesive, wherein the inorganic adhesive. The inorganic adhesive can be a modified inorganic adhesive comprising at least 99 wt. % inorganic constituents and an organic additive of at least 0.01 wt. % and less than 1 wt. % based on a total solids content of the inorganic adhesive.

A safety garment material is designed to be used in high temperature environments where aluminized personal protection equipment is required gear to protect workers from high radiant heat as well as accidental molten metal splashing or spills. The material includes a plurality of layers of nonwoven fire-resistant oxidized polyacrylonitrile (OPAN) arranged in a wicking configuration to wick moisture away from the wearer's body and layer of perforated aluminized film to allow escape of moisture from the wearer's body.

A fire protection article is provided that includes a fire barrier comprising a plurality of non-combustible fibers, and a passive thermal insulator coupled to the fire barrier and comprising a plurality of non-meltable fibers. Optionally, the fire protection article displays a time to break in the 1100° C. Break Strength Test of at least 10 seconds or a minimum tensile strength at 150° C. of at least 5 kPa. Optionally, the fire barrier comprises substantially continuous fibers that are mutually entangled. The fire barrier and passive thermal insulator can be mutually secured using a suitable polymeric binder, such a thermoplastic fluoropolymer binder. The combination of a relatively thin fire barrier with a comparatively thicker passive thermal insulator can provide thermal runaway protection in lithium-ion battery applications, structural integrity and a high degree of thermal insulation in the event of fire exposure.

Described herein is an acoustic building panel comprising: a body comprising a fibrous material and having a first major surface opposite a second major surface and a side surface extending there-between, the fibrous material comprising polyester fiber in an amount of at least 70 wt. % based on the total weight of the fibrous material; wherein the body has a bulk density as measured between the first major surface, the second major surface, and the side surface, the bulk density ranging from about 4.8 lb./ft.sup.3 to about 6.0 lb./ft.sup.3.