A first stack is formed by stacking a first sheet of metal foil, a first prepreg, and a second sheet of metal foil, one on top of another. The first prepreg is thermally cured by thermally pressing these members to make a double-sided metal-clad laminate. Conductor wiring is formed by partially removing the first sheet of metal foil from the double-sided metal-clad laminate to make a printed wiring board. After a third sheet of metal foil has been preheated, the conductor wiring of the printed wiring board, a second prepreg, and the third sheet of metal foil are stacked one on top of another and thermally pressed together. The first insulating layer has a lower linear expansion coefficient than any of the first sheet of metal foil or the second sheet of metal foil does.

A resin composition is comprised of an epoxy resin comprised of a solid epoxy resin and a liquid polyurethane toughener that is dissolved in the epoxy resin and, upon curing of the liquid epoxy resin, the liquid polyurethane toughener phase separates into particles having a particle size of 50 nm to 2 micrometers, an epoxy hardener; and an epoxy soluble latent catalyst. The resin composition provides a more homogeneous infusion of the resin into a fibrous material for forming a prepreg and ultimately an epoxy fiber reinforced composition with improved toughness without sacrificing speed of impregnation or uniformity of the epoxy matrix within the composite.

Heat sink and method of manufacturing a graphene based heat sink, the method comprising: providing a first and second graphene film; arranging a layer of nanoparticles on a surface of the first and second graphene film to improve an adhesion strength between the graphene films; attaching the second graphene film to the first graphene film by means of an adhesive and the layer of nanoparticles; forming a laminated graphene film comprising a number of graphene film layers by repeating the steps, wherein the laminated graphene film is formed to have an anisotropic thermal conductivity; assembling a plurality of laminated graphene films by applying pressure and heat to cure the adhesive to form a graphene block; and removing selected portions of the graphene block to form a heat sink comprising fins extending from a base plate of the heat sink.

A resin composition, comprising: a thermosetting resin that has a mesogenic group in a molecule and that is capable of forming a smectic structure via a curing reaction; and mica.

This metal-FRP composite body comprises a metal member, an FRP layer and a bonding resin layer that is interposed between the metal member and the FRP layer. The bonding resin layer is a solidified product of a phenoxy resin (A) by itself, or alternatively, a cured product of a bonding resin composition that contains 50 parts by weight or more of the phenoxy resin (A) in 100 parts by weight of the resin components; and the bonding resin layer firmly bonds the metal member and the FRP layer to each other. The bonding resin composition may additionally contain 5-85 parts by weight of an epoxy resin (B) relative to 100 parts by weight of the phenoxy resin (A), and a crosslinking agent (C) that contains an acid dianhydride.

The present invention provides a color migration blocking composition, comprising: 15 parts to 45 parts by weight of a phenoxy resin; 5 parts to 40 parts by weight of an elastomer-modified epoxy resin; 1.5 parts to 7.0 parts by weight of a curing agent; and 30 parts to 65 parts by weight of a solvent, based on the total weight of the color migration blocking composition. The color migration blocking film formed by the color migration blocking composition has a good effect on blocking color migration and a good adhesion strength; therefore, when a color migration blocking laminate comprising the color migration blocking film is applied to a fabric, not only the unnecessary discoloration can be avoided and the softness of the fabric can be maintained, but also the processing cost is reduced, thereby promoting the value of the product.

Coated articles are provided comprising: (a) a substrate that demonstrates electrical conductivity, wherein the substrate is an electronic component of a circuit assembly; (b) a moisture barrier coating layer; and (c) an encapsulating plastic coating layer. The moisture barrier coating layer may be applied to the surface of the substrate with the encapsulating plastic coating layer applied on top of the moisture barrier coating layer, or vice versa.

This disclosure relates to a fire-retardant composite material comprising a fibre-reinforced plastic covered by an aluminium foil and its application in passenger transport industries such as aerospace, railway or marine.

A bonded diamond assembly and a method of forming the assembly. The assembly comprises a polycrystalline diamond wafer having a largest linear dimension of between 25 mm and 200 mm, a substrate and a bonding layer located between the diamond and the substrate and bonding them together. The bonding layer, when inspected using ultrasound using a resolution of 50 m, a focal length selected to inspect the bonding layer, and frequencies of 100 MHz and 30 MHz, comprises low numbers of voids extending either across the thickness of the bonding layer and low numbers of voids that do not extend across the thickness of the bonding layer.

Cards made in accordance with the invention include a specially treated thin decorative layer attached to a thick core layer of metal or ceramic material, where the thin decorative layer is designed to provide selected color(s) and/or selected texture(s) to a surface of the metal cards. Decorative layers for use in practicing the invention include: (a) an anodized metal layer; or (b) a layer of material derived from plant or animal matter (e.g., wood, leather); or (c) an assortment of aggregate binder material (e.g., cement, mortar, epoxies) mixed with laser reactive materials (e.g., finely divided carbon); or (d) a ceramic layer; and (e) a layer of crystal fabric material. The cards may be dual interface smart cards which can be read in a contactless manner and/or via contacts.