Abstract:
The present invention relates to a composite for manufacturing a fiber-reinforced polymer composite for a strength member of an overhead electric cable and a method for manufacturing a fiber-reinforced polymer composite for a strength member of an overhead electric cable using the same. The composite for manufacturing a fiber-reinforced polymer composite for a strength member of an overhead electric cable, provided in the present invention, comprises a thermosetting resin of an epoxy-based resin; a liquid curing agent of an acid anhydride-based or an amine-based compound; an accelerating agent of an imidazole-based compound or a boron- trifluoride ethylamine-based compound; a release agent of zinc stearate; and a filler of a nanoclay or a short glass fiber.
Abstract:
Disclosed is a fiber reinforced plastic wire used as the overhead transmission cable. The fiber reinforced plastic wire for a strength member of an overhead transmission cable according to the present invention includes a wire having a predetermined diameter and composed of thermoset matrix resin; and a plurality of high strength fibers dispersed parallel to a longitudinal direction in an inside of the wire, the high strength fibers being surface-treated with a coupling agent to improve interfacial adhesion to the matrix resin. The fiber reinforced plastic wire of the present invention has the high tensile strength at the room temperature and the high temperature since its high strength fiber is surface-treated with a coupling agent. The fiber reinforced plastic wire can be also effectively used as the strength member in the overhead transmission cable since it has the excellent low coefficient of thermal expansion, etc. and is light-weight.
Abstract:
Disclosed are a polypropylene-based flame-retardant insulating resin composition and an insulating cable equipped with an insulation layer formed using the same. The insulating resin composition comprises a polypropylene resin, and 50 to 200 parts by weight of an inorganic flame-retardant based on 100 parts by weight of the polypropylene resin. The insulating resin composition has the controlled polarity and hydrophilicity of the flame-retardant or the optimized particle distribution of the flame-retardant, and consequently uniform dispersion of the flame-retardant and maxim compatibility with the resin. Thus, the composition has the improved properties as an insulating material of an electric cable.
Abstract:
Provided are an apparatus and a method of depositing films capable of controlling deposition rate and film properties using the charging behavior of nanoparticles formed in gas phase. The apparatus includes a chamber in which a substrate is loaded, a gas supply system configured to introduce a reaction gas into the chamber, a filament configured to emit heat for dissociating the introduced reaction gas, a power supply configured to apply a constant alternate current or direct current voltage, and a bias supply unit configured to apply a bias to at least one of a top, a side and a bottom of the substrate using a voltage applied from the power supply while a film is deposited on the substrate from the dissociated reaction gas, the bias supply unit being separated from the substrate.