摘要:
The present invention provides a short-fiber containing composition inhibited from electrostatic charging and having practical insulating properties. This composition has a volume resistivity of 10⁵ - 10¹³ Ωcm and comprises 10-40 parts by weight of at least one kind of short fibers having a volume resistivity of 10⁻¹ - 10³ Ωcm and 90-60 parts by weight of a polymer or comprises 10-40 parts by weight of a mixture comprising at least one kind of short fibers having a volume resistivity of less than 10⁻¹ Ωcm and at least one kind of short fibers having a volume resistivity of 10⁻¹ Ωcm or more and 90-60 parts by weight of a polymer. A method for controlling the polymer composition to 10⁵ - 10¹³ Ωcm in volume resistivity is also provided.
摘要:
The present invention provides a method for surface treatment of carbon fibers which comprises allowing an alkali metal nitrate to adhere to carbon fibers in an amount of 0.01-5% by weight based on the weight of the carbon fibers and then heat treating the carbon fibers in the air at a temperature between at least the melting point or at least the decomposition temperature of the alkali metal nitrate and lower than 500°C.
摘要:
The present invention provides resin-coated carbon fiber chopped strands which can be suitably used for direct injection molding and which comprise carbon fiber chopped strands coated with 5-50 parts by weight of a thermosetting resin and 0.5-30 parts by weight of an urethane resin based on 100 parts by weight of the carbon fiber chopped strands, and the molding obtained from the resin-coated carbon fiber chopped strands.
摘要:
The present invention provides a short-fiber containing composition inhibited from electrostatic charging and having practical insulating properties. This composition has a volume resistivity of 10⁵ - 10¹³ Ωcm and comprises 10-40 parts by weight of at least one kind of short fibers having a volume resistivity of 10⁻¹ - 10³ Ωcm and 90-60 parts by weight of a polymer or comprises 10-40 parts by weight of a mixture comprising at least one kind of short fibers having a volume resistivity of less than 10⁻¹ Ωcm and at least one kind of short fibers having a volume resistivity of 10⁻¹ Ωcm or more and 90-60 parts by weight of a polymer. A method for controlling the polymer composition to 10⁵ - 10¹³ Ωcm in volume resistivity is also provided.