A non woven web including a multiplicity of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive mat, the polycrystalline, aluminosilicate ceramic filaments having an average mullite percent of at least 75 wt %. The cohesive mat preferably exhibits a compression resilience after 1,000 cycles at 900° C. when measured according to the Fatigue Test, of at least 30 kPa. Insulation articles including the cohesive mats or formed by chopping the ceramic mats into ceramic fibers, pollution control devices including the insulation articles, and methods of making the non-respirable, polycrystalline, aluminosilicate ceramic filaments and fibers, nonwoven webs, insulation articles, and pollution control devices, are also described.

A component of an electrical system that includes an electrical system component structure and a thermal insulating structure for thermally insulating at least a portion of the electrical system component structure. The thermal insulating structure includes a mixture with an inorganic binder, inorganic filler particles, and water. The thermal insulating structure also includes a fabric with inorganic fibers in the form of a fiber structure. The fabric is impregnated with the mixture so as to form a pliable binder structure. The pliable binder structure is positioned on at least a portion of the electrical system component structure, and the pliable binder structure becomes a rigid binder structure in response to being dried, cured or otherwise hardened.

A component of an electrical system that includes an electrical system component structure and a thermal insulating structure for thermally insulating at least a portion of the electrical system component structure. The thermal insulating structure includes a mixture with an inorganic binder, inorganic filler particles, and water. The thermal insulating structure also includes a fabric with inorganic fibers in the form of a fiber structure. The fabric is impregnated with the mixture so as to form a pliable binder structure. The pliable binder structure is positioned on at least a portion of the electrical system component structure, and the pliable binder structure becomes a rigid binder structure in response to being dried, cured or otherwise hardened.

Method for producing a fibrous mat, which can be installed in a component of a vehicle provided with an internal combustion engine for acoustically and thermally insulating the component. The method comprises the steps of: providing a fibrous core consisting of at least one fibrous bundle that extends along a direction that is approximately parallel to a longitudinal axis; wrapping the outer surface of the fibrous core by means of a fibrous bundle that extends along a direction that is approximately transverse to the bundle of the fibrous core, thus providing at least one outer tubular fibrous containment sleeve that extends, in turn, along the longitudinal axis and covers the outer surface of the fibrous core to trap the fibrous core therein.

Method for producing a fibrous mat, which can be installed in a component of a vehicle provided with an internal combustion engine for acoustically and thermally insulating the component. The method comprises the steps of: providing a fibrous core consisting of at least one fibrous bundle that extends along a direction that is approximately parallel to a longitudinal axis; wrapping the outer surface of the fibrous core by means of a fibrous bundle that extends along a direction that is approximately transverse to the bundle of the fibrous core, thus providing at least one outer tubular fibrous containment sleeve that extends, in turn, along the longitudinal axis and covers the outer surface of the fibrous core to trap the fibrous core therein.

Disclosed are a carbon substrate for a gas diffusion layer of a fuel cell, a gas diffusion layer employing the same, an electrode for a fuel cell, a membrane electrode assembly for a fuel cell, and a fuel cell, wherein the carbon substrate includes a plate-shaped substrate having an upper surface and a lower surface opposite the upper surface, and the plate-shaped substrate includes carbon fibers arranged to extend in one direction (extend unidirectionally) and a carbide of an organic polymer located between the carbon fibers to bind the carbon fibers to each other. Since the carbon substrate according to the present disclosure includes carbon fibers aligned in at least one direction selected from a machine direction (MD) and a cross-machine direction (CMD) by controlling the alignment of carbon fibers, the carbon substrate has excellent mechanical strength, particularly, bending strength, even if its thickness is thin, and thus it is possible to effectively prevent the intrusion phenomenon of the gas diffusion layer into the flow path of the metal separator, and has excellent gas flow characteristics.

The present invention aims to provide a sheet-shaped reinforcing fiber substrate having shear deformability to conform to a three dimensional shape and restraining the generation of waste pieces to realize a large improve in the yield of reinforcing fibers and a reduction in production cost, and also provide a production method therefor.

The sheet-shaped reinforcing fiber substrate has a layered structure containing N layers (N being an integer of 3 or more) produced by arranging a plurality of reinforcing fiber bundles with appropriate lengths and meets the requirements (1) to (5) given below: (1) in each layer, mutually adjacent reinforcing fiber bundles are aligned parallel to each other in such a manner that the clearance between mutually adjacent reinforcing fiber bundles is not smaller than the width of the reinforcing fiber bundles, (2) the reinforcing fiber bundles in a layer and those in the layer located immediately above or below and in contact therewith are aligned in different directions, (3) the length direction of the reinforcing fiber bundles in a randomly selected odd-numbered no'th layer (no being an odd number not less than 3 and not more than N) and the length direction of the reinforcing fiber bundles in the (no-2)'th layer are parallel to each other and the reinforcing fiber bundles in each layer do not overlap each other, (4) in the case where N is 4 or more, the length direction of the reinforcing fiber bundles in a randomly selected even-numbered ne'th layer (ne being an even number not less than 4 and not more than N) and the length direction of the reinforcing fiber bundles in the (ne-2)'th layer are parallel to each other and the reinforcing fiber bundles in each layer do not overlap each other, and (5) mutually intersecting reinforcing fiber bundles are joined together in at least part of the intersection regions where a reinforcing fiber bundles in any of the odd-numbered layers directly overlaps a reinforcing fiber bundle in any of the even-numbered layers.

A method of bonding together surfaces of two or more elements. The method includes the steps of providing two or more elements, applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other, and curing the adhesive, wherein the adhesive comprises at least one hydrocolloid.

A method of bonding together surfaces of two or more elements. The method includes the steps of providing two or more elements, applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other, and curing the adhesive, wherein the adhesive comprises at least one hydrocolloid.

A protective device, in particular an anti-erosion protective device, preferably a geotextile, is at least configured to be planarly spread over a surface, in particular an earth surface, that is to be protected, and which is at least largely implemented of a plurality of synthetic fibers interconnected via force-fit connection and/or substance-to-substance bond and arranged in such a way that they form an essentially three-dimensional structuring, wherein at least a large portion of the synthetic fibers are at least largely biodegradable.