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:
To obtain stable and high conductivity carbon fiber, hydrocarbon is thermodecomposed in vapor phase into carbon fiber with such a crystal structure that carbon hexagonal net planes thereof are arranged substantially in parallel to fiber axis and in annular ring growth fashion around the fiber axis, and then the carbon fiber is pulverized into 10 .mu.m or less long carbon fiber. Since the carbon fiber is pulverized into relatively short length, when mixed with resin or rubber material without damaging the carbon crystal structure, it is possible to obtain stable and high conductivity resin or rubber material. Further, it is also possible to effectively infiltrate reactive substance to between the carbon hexagonal net planes to form further higher conductivity carbon intercalation compound.
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 relates to providing incombustible polyolefin molding compositions having good properties such as electric insulating property, flexibility, heat resisting property, antismoking property and mechanical property. The said superior properties are brought about by adding zirconium oxide to the polyolefin composition.In particular, the superior antismoking property is brought about by the synergistic effect of adding zirconium oxide and aluminum oxide or hydroxide to the polyolefin composition. The polyolefin molding composition of the present invention is suitable for the coating composition of electric wire.
摘要:
A compressor mounted on a vehicle is disclosed. The compressor includes an apparatus for transmitting rotational power from an engine to drive shaft of the compressor via a pulley. The apparatus has a spring coupled to one of the pulley and the drive shaft. A deformable ring is coupled to the other one of the pulley and the drive shaft. The deformable ring is deformed by heat. The spring and the deformable ring are being held in abutment against each other by the force of the spring so as to transmit the rotational power to each other. A contact ring is interposed between the spring and the deformable ring. The contact ring has a rigidity larger than that of the deformable ring. The spring and the contact ring frictionally contact one another to generate the heat that deform the deformable ring when load generated in the drive shaft is in excess of a predetermined value.
摘要:
A viscous fluid type heat generator including a housing assembly in which a heat generating chamber confining therein a heat generative viscous fluid to which a shearing action is applied by a rotor element rotated by a drive shaft, and having inner wall surfaces confronting outer surfaces of the rotor element, the inner wall surfaces of the heat generating chamber and the outer faces of the rotor elements defining a small space in which the heat generative viscous fluid is held, and having fluid movement regulator formed by an elongate recess or ridge formed therein to increase or suppress heat generation of the viscous fluid during the rotation of the rotor element in response to a change in an environmental condition in which the heat generator is used, and a change in an operation condition of the viscous fluid heat generator.
摘要:
A heating apparatus for a vehicle with a simplified piping structure in a fluid pressure operating system, to a heat exchanger while preventing a pulsation of the operating fluid in the system from being directly transmitted to a cabin, thereby suppressing an occurrence of a noise in the cabin. A fluid pressure operating system includes an oil pump 12 rotated by an engine 21 and an actuator 20 operated by the operating fluid issued from the oil pump 12. A heat exchanger 39 is arranged between an outlet of the oil pump 12 and the actuator 20. Heat generated at the oil pump 12 in the fluid pressure operating system 11 is passed to the engine cooling water at the heat emitter and is used for heating the cabin.
摘要:
A viscous heater which can increase the amount of generated heat without any special means of enlarging the heat generating effective region. A heater housing is made up of an intermediate housing (1), a cylindrical stator member (2), a front housing (5) and a rear housing (6). The heater housing defines therein a heat generating chamber (7) and a heat radiating chamber (water jacket) (8) around the heat generating chamber. Front and rear drive shafts (12A), (12B) and a rotor (20) are disposed in the heat generating chamber (7) to be rotatable together, while silicone oil as a viscous fluid is also sealed in the heat generating chamber (7) A plurality of grooves (31, 32) extending in the axial direction of the rotor are formed respectively on an outer circumferential surface of the rotor (20) and an inner circumferential surface of the stator member (2), the grooves serving as shearing force increasing means.
摘要:
A viscous fluid type heat generator including a housing assembly defining a heat generating chamber and an additional chamber communicated through fluid passageway means with the heat generating chamber, these chambers forming a fluid-tight chamber for accommodating a viscous fluid, and a heat receiving chamber for permitting a heat exchanging fluid to circulate therethrough to receive heat from the heat generating chamber. A rotor element is mounted on a drive shaft for rotation together therewith in the heat generating chamber with a gap defined between the inner wall surfaces of the heat generating chamber and the outer faces of the rotor element. The fluid passageway means includes a fluid withdrawing passageway for withdrawing the viscous fluid from the gap into the additional chamber and a fluid supply passageway for supplying the viscous fluid from the additional chamber into the gap. The fluid withdrawing passageway includes a withdrawing channel formed along one of the inner wall surfaces of the heat generating chamber. The withdrawing channel extends up to and opens to an outer peripheral region of the heat generating chamber to communicate the outer peripheral region with the additional chamber.
摘要:
A heating system for a vehicle is provided which does not require a large boarding space in an engine room very much, which can be manufactured at a reduced cost, and which can fully heat a passenger compartment of a vehicle when an engine is started. For instance, in the vehicle heating system, a water pump (WP) and a viscous heater (VH) is incorporated into an installation housing (1), a plate (2) and a cover (3) which are bonded to a cylinder block of an engine. The water pump (WP) and the viscous heater (VH) are driven by a drive shaft (11) which is shared by them. Moreover, the viscous heater (VH) includes an auxiliary water jacket (WJ.sub.2). The auxiliary water jacket (WJ.sub.2) is communicated with a main water jacket (WJ.sub.1) of the engine by way of a pump chamber (4) of the water pump (WP), and is further communicated with a heater core for heating a passenger compartment of a vehicle.