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To meet the demands for increased integration and multi functions for multilayer electronic components the related materials and process technique for layer-to-layer interconnection have to be developed together. Using nano-, micro-sized metal powders and epoxy resins conductive via pastes have been formulated. Via conductance was measured before and after solder floating(288 °C) to observe the change...
Epoxy resin is a polar thermosetting polymer that is widely employed in different branches of industry and everyday life, due to their stable physical and chemical properties. Of all the polymer materials currently being used in the electrical insulation industry, epoxy resin is the most widely used kind, together with polyethylene and chosen as the base polymer material in the present study. As a...
Recent developments of nanofabrication have enabled the miniaturization of electronic devices, allowing more electronic devices to be combined into a single device with a high performance. However, the complex devices have led to the escalation of power dissipation as well as the increasing heat flux at the interface between devices. Electronic devices were damaged by much heat accumulation, since...
Insulation based on epoxy resin is widely used in high voltage applications. This paper shows the formulation of epoxy based nanocomposites and the influence of the filler material on the DC breakdown strength. Filler materials discussed are SiO2, Al2O3 and AlN with average particle size between 22 and 100 nm. AlN has been chosen because it has shown to considerably increase the thermal conductivity...
The thermal resistance of nanocomposite layers formed by Single Wall Carbon Nanotubes (SWCNT) dispersed in epoxy resins has been measured under conditions similar to the ones used to dissipate heat in microelectronic devices. The variation of thermal conductivity as a function of concentration of SWCNT is reported and discussed with reference to the dispersion state of SWCNT in the layers.
The trend to boost MVA capabilities with smaller machine size of large electrical generators, has concentrated on the reduction of stator coil groundwall insulation thickness to obtain a better heat flow to maintain efficiency. This approach has about reached its limits using the presently commercially available glass backed mica tapes on VPI'ed stator coils. The major limitation that has been reached...
The thermal conductivity λ of polycarbonate (PC) has been measured in the temperature range 3-150 K under hydrostatic pressure up to 1.3 GPa. A strong influence of pressure on λ has been observed over the entire temperature range. Additional measurements of the pressure dependence of the density showed that the density of PC, polystyrene (PS), epoxy resin and PTFE (Teflon) increased considerably...
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