Ballistic resistant composite materials having high positive buoyancy in water are provided. More particularly, provided are foam-free, buoyant composite materials fabricated using dry processing techniques. The materials comprise fibrous plies that are partially coated with a particulate binder that is thermopressed to transform a portion of the binder into raised, discontinuous patches bonded to fiber/tape surfaces, while another portion of the particulate binder remains on the fibers/tapes as unmelted particles. The presence of the unmelted binder particles maintains empty spaces within the composite materials which increases the positive buoyancy of the composites in water.

Compositions-of-matter comprising a matrix made of one or more, preferably two or more elastic layers and one or more viscoelastic layer are disclosed. The compositions-of-matter are characterized by high water-impermeability and optionally by self-recovery. Processes of preparing the compositions-of-matter and uses thereof as tissue substitutes or for repairing damaged tissues are also disclosed.

Described herein is a stain and sag resistant acoustic building panel comprising a porous body formed from building material and latex binder, wherein the building material may include fibers and filler and at one of the building materials has been pre-treated with a charge-modifying component, thereby enhancing the sag-resistance of the building panel.

The present invention is directed to an improved gypsum board, such as an improved sound damping gypsum board. The gypsum board comprises a gypsum core including gypsum and a sound damping polymer. The gypsum core includes a first gypsum layer surface and a second gypsum layer surface opposing the first gypsum layer surface. In addition, a first encasing layer is disposed on the first gypsum layer surface and a second encasing layer is disposed on the second gypsum layer surface.

A liquid containment cell includes an inner layer configured to contain a liquid, an outer layer, and a multilayer self-sealing structure disposed between the inner layer and the outer layer, where the multilayer self-sealing structure includes a plurality of sealing liner layers and further includes at least one slip layer disposed between adjacent sealing liner layers of the plurality of sealing liner layers. The at least one slip layer includes a polyethylene (PE) material, and the at least one slip layer is configured to permit at least one sealing liner layer of the plurality of sealing liner layers to move at least partially into a hole created by a projectile.

A pipe-wrapping material or compound, comprising a thermoplastic blend, wherein the thermoplastic blend includes at least one isobutylene-isoprene copolymer; at least one multi-arm polymer based on ethylene/propylene; at least one ethylene copolymer; and at least one polybutene polymer; at least one filler; at least paraffinic oil; and at least one biocide, wherein the at least one biocide is formulated to be effective against anaerobic bacteria, and wherein the anaerobic bacteria include sulfate-reducing bacteria.

A composite storage tank may include a wall structure including at least three regions including an inner region, an outer region, and at least one permeation barrier. Another region may be optionally incorporated for venting potential permeation of fluids. The at least one permeation barrier and/or the venting layer may be strategically positioned between the inner region and the outer region to reduce or at least partially prevent fluid permeation of the inner region or the outer region. A vehicle may include such a composite storage tank. Methods of forming a composite fluid storage tank may include forming an inner composite region, applying a permeation barrier to an outer surface of the inner composite region, forming an outer composite region, and curing the inner composite region and the outer composite region with the permeation barrier to form the composite fluid storage tank.

A multilayer thermal insulation panel for construction and manufacturing method thereof are described. A manufacturing method of a backing layer of a multilayer thermal insulation panel for construction, the method comprising the steps of: providing a reinforcement layer in fibrous material, spreading a first fluid mineral mixture on the reinforcement layer to form a cladding layer of the reinforcement layer; forming a fire-resistant layer comprising expansive graphite on the cladding layer; and drying the backing layer.

Provided are a composite material and a preparation method therefor. The composite material comprises: a base layer; a first plant fibre fabric located on the upper surface of the base layer; optionally, a second plant fibre fabric located on the lower surface of the base layer; and resins present in each layer. The composite material has a decorative performance and an improved mechanical performance.

A multi-layered product having an embossed interior layer is disclosed along with a method of making the product. The multi-layered product has a first layer with an interior surface, a second layer with an interior surface, and a third layer sandwiched between the first and second layers. The third layer has a first surface and a second surface and has a thickness therebetween. The third layer is embossed into a waffle pattern having a plurality of protrusions and a plurality of recesses. Each of the plurality of protrusions and recesses is adjacently aligned and horizontally offset from one another. The plurality of protrusions forms a horizontal plane, at the first surface, which is positioned above a horizontal plane formed by the plurality of recesses, at the first surface. The product also has an adhesive which secures the three layers together.