A macro-molecular leakage-free self-adhering aluminum foil has two layers of aluminum foil compounded using a PET film, and the other surfaces of each layer coated with a modified PE adhesive layer respectively; or air gaps in one surface or two surfaces are filled with nano-aluminum to form a permeable air gap-free surface. The foil has advantages: 1, high folding resistance, fatigue resistance and strength 2, wrapping self-adhering performance is good, and stripping strength formed after adhesion is several times as high as that of the prior art; 3, air gaps in the surface of the aluminum foil filled with nano-aluminum powder result in improved compactness; manufacture from low-grade aluminum foil, and so that rolling precision requirements are lowered, and manufacturing cost reduced; 4, insulating strength is high, shielding effect is good, the return loss phenomenon is avoided, and tensile strength is good.

A macro-molecular leakage-free self-adhering aluminum foil has two layers of aluminum foil compounded using a PET film, and the other surfaces of each layer coated with a modified PE adhesive layer respectively; or air gaps in one surface or two surfaces are filled with nano-aluminum to form a permeable air gap-free surface. The foil has advantages: 1, high folding resistance, fatigue resistance and strength 2, wrapping self-adhering performance is good, and stripping strength formed after adhesion is several times as high as that of the prior art; 3, air gaps in the surface of the aluminum foil filled with nano-aluminum powder result in improved compactness; manufacture from low-grade aluminum foil, and so that rolling precision requirements are lowered, and manufacturing cost reduced; 4, insulating strength is high, shielding effect is good, the return loss phenomenon is avoided, and tensile strength is good.

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.

The present invention discloses an artificial graphite flake manufacturing method, which uses the PI (polyimide) films as the material; via a stacking step, a first heating step and a second heating step, the PI films are processed to form the artificial graphite flakes so as to increase the lubrication and the hardness, improve the heat conduction for balancing temperature increase and better the smoothness; in addition, via a perforation step, a hole structure is formed on the artificial graphite flakes so as to increase the heat diffusion area and the air permeability of the artificial graphite flakes, and then increase the defect-free rate and the smoothness thereof.

A thermoplastic surfacer for providing lightning strike protection to a composite component of an aircraft, methods of manufacturing the surfacer, and methods of applying the surfacer to a composite part. The thermoplastic surfacer includes a broadgood having a thermoplastic resin, one or more fillers embedded into the broadgood, and a lightning strike protection mesh or foil embedded into the broadgood. When applying the surfacer to a composite part of an aircraft, the method includes draping the surfacer on an at least partially unconsolidated composite part, consolidating the at least partially unconsolidated composite part by heating the part to a temperature at or above a melt temperature of a resins used in the part and in the surfacer, and filling at least one surface defect in the consolidated part using the thermoplastic polymer resin and milled fibers provided in the thermoplastic surfacer.

A thermoplastic surfacer for providing lightning strike protection to a composite component of an aircraft, methods of manufacturing the surfacer, and methods of applying the surfacer to a composite part. The thermoplastic surfacer includes a broadgood having a thermoplastic resin, one or more fillers embedded into the broadgood, and a lightning strike protection mesh or foil embedded into the broadgood. When applying the surfacer to a composite part of an aircraft, the method includes draping the surfacer on an at least partially unconsolidated composite part, consolidating the at least partially unconsolidated composite part by heating the part to a temperature at or above a melt temperature of a resins used in the part and in the surfacer, and filling at least one surface defect in the consolidated part using the thermoplastic polymer resin and milled fibers provided in the thermoplastic surfacer.

One aspect of the present disclosure provides a composite body including: a nitride sintered body having a porous structure; and a semi-cured product of a thermosetting composition impregnated into the above-described nitride sintered body, in which dielectric breakdown voltage is 4.5 kV or higher.

A wet friction material includes a base including a matrix of fibers and filler particles embedded in the matrix of fibers; a binder embedded in an interior of the base; and a quaternary ammonium salt containing coating on an outer surface of the base. The quaternary ammonium salt containing coating can include a quaternary ammonium salt and a solution binder.

A method of making a crystallographically-oriented metallic film with a two-dimensional crystal layer, comprising the steps of providing a metal film on a substrate, transferring a two-dimensional crystal layer onto the metal film and forming a two-dimensional crystal layer on metal film complex, heating the two-dimensional crystal layer on metal film complex, and forming a crystallographically-oriented metallic film with a two-dimensional crystal layer. A crystallographically-oriented metallic film with a two-dimensional crystal layer, comprising a substrate, a metal film on the substrate, a two-dimensional crystal layer on the metal film on the substrate, and a tunable microstructure within the porous metal/two-dimensional crystal layer on the substrate, wherein the metal film has crystallographic registry to the two-dimensional crystal layer.

A method of making a crystallographically-oriented metallic film with a two-dimensional crystal layer, comprising the steps of providing a metal film on a substrate, transferring a two-dimensional crystal layer onto the metal film and forming a two-dimensional crystal layer on metal film complex, heating the two-dimensional crystal layer on metal film complex, and forming a crystallographically-oriented metallic film with a two-dimensional crystal layer. A crystallographically-oriented metallic film with a two-dimensional crystal layer, comprising a substrate, a metal film on the substrate, a two-dimensional crystal layer on the metal film on the substrate, and a tunable microstructure within the porous metal/two-dimensional crystal layer on the substrate, wherein the metal film has crystallographic registry to the two-dimensional crystal layer.