- Email: [email protected]
4489132 Spherical bodies of carbon or graphite
II
New Patents
4487880 METHOD FOR IMPARTING IMPROVED SURFACE PROPERTIES TO CARBON FIBERS AND COMPOSITE
voltage between electrodes is 4000 volts or higher. The composition of the atmospheric inorganic gas is also important and the gas is preferably oxygen gas or a gaseous mixture containing at least 10% by volume of oxygen.
4489132
Susumu Ueno, Hideaki Kamata, Ibaraki, Japan assigned to Shin-Etsu Chemical Co Ltd
SPmRICAL BODIES OF CARBON OR GRAPHITE Tatsu Shimoyama, Hitachi, Japan assigned to Hitachi Chemical Company Ltd
The invention provides a means for solving the problem of poor affinity between the surface of carbon fibers and a synthetic resin in a resinbased composite material reinforced with the carbon fibers. The method comprises subjecting the surface of the carbon fibers in advance to exposure to low temperature plasma in a low pressure atomosphere of an inorganic gas generated by applying an electric voltage between electrodes. It was unexpectedly discovered that the discharge voltage between the electrodes is very critical and satisfactory results can be obtained when the p~k-to-peg value of the discharge
A spherical body of baked or graphitized carbon having a thermal conductivity at 25 degrees C. of 0.03 cal/cm.sec. degrees C. or more and an anisotropy of thermal expansion coefficient of 40% or less has an excellent service life under severe thermal conditions without causing pitting or cracking and can be used as industrial machine parts such as ball bearings.
For information about
Pergamon InfoLine Inc. 1340 Old Chain Bridge Road McLean, Virginia 22101
USA Telephone (703) 442-0900 Telex: 90-1811
PATSEARCH*
Pergamon InfoLine Limited 12 Vandy Street London ECZA 2DE England Telephone (01) 377-4650 Telex: 8814614
Pergamon Press Canada Ltd 150 Consumers Road, Suite 104 Willowdale, Ontario Canada M2J lP9 Telephone (416) 497-8337
New Patents
4487880 METHOD FOR IMPARTING IMPROVED SURFACE PROPERTIES TO CARBON FIBERS AND COMPOSITE
voltage between electrodes is 4000 volts or higher. The composition of the atmospheric inorganic gas is also important and the gas is preferably oxygen gas or a gaseous mixture containing at least 10% by volume of oxygen.
4489132
Susumu Ueno, Hideaki Kamata, Ibaraki, Japan assigned to Shin-Etsu Chemical Co Ltd
SPmRICAL BODIES OF CARBON OR GRAPHITE Tatsu Shimoyama, Hitachi, Japan assigned to Hitachi Chemical Company Ltd
The invention provides a means for solving the problem of poor affinity between the surface of carbon fibers and a synthetic resin in a resinbased composite material reinforced with the carbon fibers. The method comprises subjecting the surface of the carbon fibers in advance to exposure to low temperature plasma in a low pressure atomosphere of an inorganic gas generated by applying an electric voltage between electrodes. It was unexpectedly discovered that the discharge voltage between the electrodes is very critical and satisfactory results can be obtained when the p~k-to-peg value of the discharge
A spherical body of baked or graphitized carbon having a thermal conductivity at 25 degrees C. of 0.03 cal/cm.sec. degrees C. or more and an anisotropy of thermal expansion coefficient of 40% or less has an excellent service life under severe thermal conditions without causing pitting or cracking and can be used as industrial machine parts such as ball bearings.
For information about
Pergamon InfoLine Inc. 1340 Old Chain Bridge Road McLean, Virginia 22101
USA Telephone (703) 442-0900 Telex: 90-1811
PATSEARCH*
Pergamon InfoLine Limited 12 Vandy Street London ECZA 2DE England Telephone (01) 377-4650 Telex: 8814614
Pergamon Press Canada Ltd 150 Consumers Road, Suite 104 Willowdale, Ontario Canada M2J lP9 Telephone (416) 497-8337