摘要:
The method of producing bromine-processed graphite fibers, comprises graphitizing gas phase grown carbon fibers by bringing ultrafine particles of metal catalyst and a hydrocarbon compound suspended in a high temperature zone into contact with each other, to obtain graphite fibers having such a crystal structure that carbon hexagonal network face is substantially in parallel with the axes of fibers and is oriented coaxially, and then bringing the thus obtained graphite fibers and bromine at a temperature lower than 60.degree. C. In this case, the interplanar spacing or the lengths of the repeat distance along the c axis direction in the crystals vary with a plurality of values within a range from 10 to 40 .ANG..
摘要:
Provided herein is a resin composite material containing graphite fiber which has good electrical conductivity and changes only a little in electrical resistance after processing. These desired properties are achieved by incorporating a synthetic resin matrix with a specific type of graphite fiber. The graphite fiber has a structure characterized by that the hexagonal network planes of carbon atoms are oriented substantially parallel to the fiber axis and like the annual ring. It is produced by bringing a hydrocarbon compound into contact, at a high temperature, with a metallic catalyst in the form of ultrafine particles to yield carbon fiber grown in the gas phase, and subsequently graphitizing thus obtained carbon fiber.
摘要:
A polyolefin rubber composition consisting essentially of 100 parts by weight of a polyolefin rubber polymer, 10 to 100 parts by weight of a mono-olefin monomer, 1 to 20 parts by weight of a polyolefin polyfunctional monomer, and 0.1 to 15 parts by weight of an organic peroxide, wherein these components are blended and subjected to heat treatment to form a denaturated polyolefin rubber.The mechanical and electrical characteristics of this denaturated polyolefin rubber do not deteriorate even after long-time subjection to heat treatment, and this material finds application as a rubber for thermally resistant electrical products.
摘要:
The present invention provides a marking ink for a covered electrical conductor utilized for a wire harness of a motor vehicle. The marking ink is printed on the covered conductor formed with polyolefin such as polyethylene and provides a high adherence (coloring), high wear resistance, high productivity, fast drying, and moderate spreading. The marking ink for the covered electrical conductor contains an acrylate resin with molecular weight of 10,500-93,000.
摘要:
A coloring apparatus for coloring an electric wire colors the wire spouts a liquid coloring agent, including a coloring material and a solvent, toward an outer surface of the wire with a specific amount thereof at a time. The coloring apparatus includes a coloring agent supply source for receiving the coloring agent, a coloring nozzle and a heater. The coloring nozzle spouts the coloring agent of the coloring agent supply source. The heater includes a heating bath and a hot air inlet. The heating bath receives the coloring nozzle. The heating bath allows the coloring nozzle to spout the coloring agent. The hot air inlet supplies hot air into the heating bath to heat the coloring agent supply source. The heater heats the coloring agent to a range lower than a boiling point of the solvent by the hot air inlet supplying the hot air into the heating bath.
摘要:
An object of the present invention is to provide an apparatus and a method for injecting assuredly a given amount of a coloring agent to an outer surface of an electric wire and coloring it. An apparatus for coloring an electric wire 1 includes coloring nozzles 31. The coloring nozzles 31 each has a solenoid valve 51 to inject or stop injection of a coloring agent to an outer surface 3a of an electric wire by opening or closing the solenoid valve. A spike voltage is applied to a coil 40 of the solenoid valve 51 when the coloring agent is injected. The spike voltage is a voltage applied to the coil 40 which is necessary to open the solenoid valve 51. The spike voltage is applied to the coil 40 to open the solenoid valve 51 and stopped after a given period of time.
摘要:
An object of the present invention is to provide a method and an apparatus for marking an electric wire at a low cost. An apparatus 1 for marking an electric wire forms a band mark 21 on a part of an outer face 5a of the electric wire 3. The band mark 21 is formed along the entire circumference of the part of the outer face 5a of the electric wire 3. The marking apparatus 1 tightens the electric wire 3 in a state where a tensile force is applied in a longitudinal direction. The marking apparatus 1 includes a nozzle 35 for injecting coloring agent toward an uppermost position 10 of the outer face 5a of the electric wire 3. The nozzle 35 has an open end 42 which is opposed to the electric wire 3 and capable of passing the coloring agent. A straight line L extending between a center C1 of the open end 42 and a center C2 of the electric wire 3 lies along a vertical direction.
摘要:
An object of this invention is to provide a connector housing which can be prevented a terminal-receiving chamber from receiving a wrong metal terminal. A connector housing 1 comprises a plurality of terminal-receiving chambers 20 and a plurality of marks 21. The terminal-receiving chamber 20 receives a male terminal 3. Electric wire 2 is attached to the male terminal 3. A mark 6 is formed on an outer surface 5a of the electric wire 2. A color of the mark 6 of one electric wire 2 is a first color R. A color of the mark 6 of the other electric wire 2 is a second color G. The first color R is different from the second color G. The mark 21 corresponds to each terminal-receiving chamber 20. A color of one mark 21 is the first color R, which is the same as the color of the mark 6 of the one electric wire 2. A color of the other mark 21 is the second color G, which is the same as the color of the mark 6 of the other electric wire 2. By forming the mark 21 in a same color as the mark 6 of the electric wire 2 attached to the male terminal 3 which is to be inserted into the terminal-receiving chamber 20 corresponding to the mark 21, the mark 21 indicates the male terminal 3 to be received by the terminal-receiving chamber 20 corresponding to the mark 21.
摘要:
A compressor has a high-pressure relief valve and a low-pressure relief valve. The high-pressure relief valve in use for a discharge region opens when the pressure of gas in the discharge region is more than a first predetermined pressure. The high-pressure relief valve is provided with a first shim. The low-pressure relief valve in use for a suction region opens when the pressure of gas in the suction region is more than a second predetermined pressure which is lower than the first predetermined pressure. The low-pressure relief valve is provided with a second shim. The high-pressure relief valve and the low-pressure relief valve have similar structure to each other.
摘要:
A heat generating apparatus having a housing assembly in which a working chamber including a heat generating region for heat generation and a fluid storing region for storing a viscous fluid, and a heat receiving chamber for receiving heat from the heat generating region are formed. The heat generating apparatus also having a rotor element mounted on a drive shaft to be rotated within the working chamber to apply a shearing action to the viscous fluid within the heat generating region. The viscous fluid generates heat when the shearing action is applied thereto so that the heat is transmitted to a heat exchanging liquid flowing through the heat receiving chamber. The heat generating region and fluid storing region communicating through an aperture formed in a partition wall formed in the working chamber, and the aperture having a gas-phase portion, a liquid-phase portion and a liquid supply portion.