Composite panels and methods of preparation are described herein. In some embodiments, the composite panel can include a first fiber reinforcement, a polyurethane composite having a first surface and a second surface opposite the first surface, wherein the first surface is in contact with the first fiber reinforcement; and a cementitious material adjacent the first fiber reinforcement opposite the polyurethane composite. The polyurethane composite can be formed from (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, (ii) one or more polyols, and (iii) a particulate filler. The fiber reinforcement can be formed from a woven or non-woven material, such as glass fibers. The composite panel can further include a material, such as a second fiber reinforcement and a cementitious layer, in contact with the second surface of the polyurethane composite. Articles comprising the composite panels are also disclosed.

This specification presents sheets including graphitic materials, including sandwich structures, thermoformed or wet-formed single layer or multilayer structures of graphitic materials, and methods of forming a layer of graphitic material. In accordance with one aspect, the specification presents a multi-layer structure comprising a core layer having a core density between 0.01 and 1 g/cm.sup.3; and a skin layer covering the core layer, the skin layer having at least 10% by weight of a graphitic material, the graphitic material having one or more of graphene oxide, reduced graphene oxide, graphene, graphite oxide, reduced graphite oxide and graphite, the skin layer having a skin density of between 0.5 and 2 g/cm.sup.3 , a thickness ratio of the skin layer to the core layer being of between 1:1000 and 1:1.

The present disclosure provides a cellular foam composition, a method for producing and using the same. One particular aspect of the disclosure provides a cellular foam composition comprising a plurality of foam layers, where each foam layer is made from a hollow microstructure material. In particular, the density of the hollow microstructure material in each foam layer is different from the density of the hollow microstructure material that forms the adjacent foam layer. In some embodiments, cellular foam compositions of the disclosure further include an interfacial layer comprising interfacial voids in between adjacent layers.

The present disclosure relates to a multilayer composite that may include a first porous layer, and a first barrier layer overlying the first porous layer. The first barrier layer may include a polyaramid material, a polyimide material, or any combination thereof. The multilayer composite may have a flame resistance rating of at least about 180° C. and a 50% strain compression rating of not greater than about 600 kPa.

A structural insulation sheathing (SIS) comprises: a first upper facial member, a second lower facial member and an insulation member in intimate, planar contact with both the first upper member and second lower members. The first and second facial members are made from the same reinforcing fiber material less than about 3/16 inch thick. The insulation member comprises a foam layer, said structural insulation sheathing having at least 10×, preferably 15 to 20 times greater strength than its individual components.

A stitched fabric including a foam core and a yarn stitched through and forming stitch holes in the foam core, where the yarn extends over at least a majority of a width and a length of the stitched fabric. In some cases, the yarn and the foam core are free from contact by another layer on either side of the foam core. In some cases, a barrier layer is disposed over at least one side of the foam core and a melted portion of the barrier layer fills a portion of the stitch holes. In some cases, the foam core is a closed cell aerogel foam core.

A panel for machinery enclosure, particularly for turbomachine enclosures. More specifically, a multilayered panel including several different layers each performing a specific function. In particular, the multilayered panel is capable to provide high levels of jet fire and fire/blast protection together with high performances in term of noise abatement with a lighter structure with respect to the panels of the prior art.

A foam flooring includes a stone-plastic base material structure, which sequentially comprises, from top to bottom, a first stable layer, a foaming layer and a second stable layer. The first stable layer and the second stable layer are both sheets with a PVC resin and filler powder as main components, with 25-40 parts by mass of the PVC resin and 55-75 parts by mass of the filler powder; and the density of the SPC foam flooring is 1.4-1.6 g/cm3. The foaming layer is arranged between the two stable layers, such that the overall density of the flooring is significantly reduced and reaches 1.4-1.6 g/m3; since the foaming layer is arranged inside, the surface strength of the overall flooring is not influenced.

A fiber preform for use in an overmolding process is provide that includes a fiber bundle arranged in a predetermined pattern and attached to itself with thread stitches to form at least one preform layer. At least one intumescent material is associated with the at least one preform layer. A vehicle component having fire resistant characteristics is also provided that includes a housing having a first side and a second side. The housing has a shape that defines the vehicle component. An intumescent material is provided on at least one of the first side and the second side of the housing.

According to some embodiments, a fireproofing system for protecting an elongate member, comprising at least one inner layer configured to at least partially wrap around itself to form an inner passage, the at least one inner layer configured to generally resist heat, and an outer shell or member defining an interior opening, wherein the first layer is configured to be positioned within the interior opening of the outer shell or outer member, wherein an elongate member is configured to pass through the inner passage.