Abstract:
A liquid crystalline composite comprising a liquid crystalline polymer, particulate filler, and fibrous web. Further disclosed is a method for forming the liquid crystalline polymer composite. The liquid crystalline polymer composite is useful in circuit materials, circuits, and multi-layer circuits, economical to make, and has excellent flame retardant properties.
Abstract:
A liquid crystalline composite comprising a liquid crystalline polymer, particulate filler, and fibrous web. Further disclosed is a method for forming the liquid crystalline polymer composite. The liquid crystalline polymer composite is useful in circuit materials, circuits, and multi-layer circuits, economical to make, and has excellent flame retardant properties.
Abstract:
A liquid crystalline composite (12) comprising a liquid crystalline polymer (13), particulate filler (16), and fibrous web (18). Further disclosed is a method for forming the liquid crystalline polymer composite (12). The liquid crystalline polymer composite is useful in circuit materials, circuits, and multi-layer circuits, economical to make, and has excellent flame retardant properties.
Abstract:
A liquid crystalline composite comprising a liquid crystalline polymer, particulate filler, and fibrous web. Further disclosed is a method for forming the liquid crystalline polymer composite. The liquid crystalline polymer composite is useful in circuit materials, circuits, and multi-layer circuits, economical to make, and has excellent flame retardant properties.
Abstract:
A multi-layer circuit board (10) comprises a liquid crystalline polymer bond ply (12) disposed between two circuit layers (14, 20) wherein the liquid crystalline polymer bond ply (12) is formed by treating a film comprising a liquid crystalline polymer with an amount of heat and pressure effective to produce a liquid crystalline polymer bond ply (12) with an in-plane coefficient of thermal expansion (CTE) of 0 to about 50 ppm/°C and further wherein the multi-layer circuit (10) is formed by lamination at a temperature of 0°C to about 10°C less than the melt temperature of the liquid crystalline polymer.
Abstract:
A multi-layer circuit comprises a circuit (18) and a resin covered conductive layer (12) disposed on the circuit (18), wherein the resin covered conductive layer (12) comprises a liquid crystalline polymer resin (16) laminated to a conductive layer (14). Such multi-layer circuits are particularly useful for high density circuit applications.
Abstract:
A thermal management circuit material comprises an electrically conductive layer; a dielectric layer comprising a polymer matrix and a thermally conductive, electrically non-conductive particulate filler, wherein the dielectric layer is disposed on and in at least partial contact with the electrically conductive layer, and wherein the circuit material has a thermal conductivity of greater than or equal to about 1 watt per meter-degree Kelvin.
Abstract:
Crosslinkable liquid crystalline polymer compositions (116) for use as dielectric materials (114) in circuit materials, circuits, and multi-layer circuits (100) are disclosed. The crosslinkable liquid crystalline polymer compositions comprise crosslinkable liquid crystalline polymers that preferably comprise end groups selected from the group consisting of phenyl maleimide, nadimide, phenyl acetylene, or combinations of the foregoing. Additionally, the crosslinkable liquid crystalline polymer compositions (116) may further comprise particulate fillers (118) and/or fibrous webs (120). The crosslinkable liquid crystalline polymer compositions provided improved electrical and mechanical properties.