摘要:
Provided is an electromagnetic wave shielding material including a multilayer structure in which at least one metal foil and at least two resin layers are closely laminated, wherein both surfaces of each metal foil are closely laminated to the resin layers; wherein each metal foil satisfies the following relationship with each of the two resin layers adjacent to the metal foil: 0.02 ≤ V M / V M' ≤ 1.2, in which: V M is a volume fraction of the metal foil relative to a total volume of the metal foil and the resin layer; V M' is (σ R - σ R' ) / (σ M + σ R - σ R' ); σ M is a true stress (MPa) of the metal foil at breakage when a tensile stress is applied to the metal foil; σ R is a true stress (MPa) of the resin layer at breakage when a tensile stress is applied to the resin layer; and σ R' is a true stress (MPa) of the resin layer when a logarithmic strain same as a logarithmic strain at breakage of the metal foil is applied to the resin layer.
摘要:
The present invention is an integral composite structural (ICS) material (10) comprising an open metal structure (20) having at least one external side and internal surfaces defining a plurality of open shapes (40) with a ceramic matrix composite (50) bonded to at least one external side and the surfaces of at least a substantial portion of the plurality of open shapes (40) and occupying at least a substantial portion of the plurality of open shapes (40). The open metal structure (10), independent of the ceramic matrix composite (50), has a total metal volume percent in the range of about 10% to about 90%, with no dimension of any open shape (40) being greater than about 3/4 inch. The ceramic matrix layer (50) covers a substantial portion of at least one external side of the open metal structure (20). At least one external side of the metal portion (20) of the ICS material is bonded with a ceramic matrix composite (50) such that the ceramic layer (50) occupies at least a significant portion of the open pores (40) of the metal portion and is bonded to a significant portion of at least one external side of the metal element (20). The present invention is also a method of manufacturing such an ICS material.
摘要:
A method of making a light weight component (28) is provided. The method including the steps of: forming a metallic foam core (11) into a desired configuration; applying an external metallic shell (20) to an exterior surface of the metallic foam core after it has been formed into the desired configuration; and attenuating the component to a desired frequency by forming a plurality of openings (34) in the external metallic shell.
摘要:
Disclosed is a digital information media having an adhesion promotion layer supported on a dummy (L1) substrate that enables secure bonding of the L1 layer, directly or indirectly, to the rest of the stack of layers in the digital information media. Certain materials including metals, metal alloys, or metalloids enhance adhesion between the adhesive layer and the L1. By applying an adhesion promotion layer of such materials on an inner surface of the L1, the bond between the adhesive and the adhesion promotion layer improves bonding and reduces a tendency for the L1 to delaminate from the rest of the stack. The tendency for breakage of the media at the juncture between the adhesion promotion layer and the adhesive is reduced, and incursion of moisture or oxygen through the interface between the adhesion promotion layer and the adhesive is inhibited.
摘要:
A method of transporting precision equipment materials without absorption of thermal energy through the heat sensitive material or device such as flat panel displays. The transfer member has a carbon fiber reinforced composite material body with a layer of metal film on the top and bottom surfaces of the transfer member that provides a reflective surface. Flat panel displays, for example, release radiant thermal energy that is absorbed by the carbon fiber reinforced composite which is detrimental to the flat panel display. The reflective surface created by the metal film prevents the energy absorption by the carbon fiber reinforced composite. A glass fiber and epoxy layer on the metal film surface protects the metal film.