Abstract:
An electric wire for an in-vehicle network cable, including a conductor and a covering that covers a periphery of the conductor. The electric wire has a diameter of 0.5 to 1.5 mm. The covering contains a fluororesin that is a tetrafluoroethylene/hexafluoropropylene/perfluoro(alkyl vinyl ether) copolymer. The fluororesin has a melt flow rate of 20 to 40 g/10 min measured at 372° C. under a 5-kg load, a relative permittivity of 2.2 or lower measured at 25° C. and 6 GHz, a melting point of 250° C. or higher, an MIT folding endurance of 2000 times or more, and a tensile elongation at 150° C. of 300% or higher. Also disclosed is an in-vehicle network cable including the electric wire and an in-vehicle network cable including a twisted pair of electric wires, at least one of which is the above-described electric wire for an in-vehicle network cable.
Abstract:
A fluorine-containing copolymer including tetrafluoroethylene units (a), ethylene units (b), and hexafluoropropylene units (c), a content of the tetrafluoroethylene units (a) in the total monomer units being 36.0 to 45.0% by mole; a content of the hexafluoropropylene units (c) in the total monomer units being 6 to 21% by mole; a mole ratio of the tetrafluoroethylene units (a) to the sum of the tetrafluoroethylene units (a) and the ethylene units (b), (a)/((a)+(b)), being 0.40 to 0.54; and a melt flow rate measured under the conditions of 230° C. and a load of 5 kg being 12 to 100 g/10 minutes.
Abstract:
A method of producing a fluororesin composition includes copolymerizing at least tetrafluoroethylene with hexafluoropropylene so that a melt flow rate at 372 degree C. of the copolymer formed in the copolymerization changes from 0.05-5.0 grams/10 minutes to 10-60 grams/10 minutes. The tetrafluoroethylene/hexafluoropropylene copolymer can be used as a coating on an electrical wire.
Abstract:
There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 3.7 to 4.4% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 28.0 to 34.0 g/10 min, and the number of functional groups of 20 or less per 106 main-chain carbon atoms.
Abstract:
There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.5 to 11.4% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.8 to 1.7% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 9.0 to 14.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 100 or less.
Abstract:
There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.0 to 12.4% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 0.3 to 0.7% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 7.6 to 13.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.
Abstract:
There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 5.5 to 6.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 36.1 to 49.9 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.
Abstract:
There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 6.2 to 7.1% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 28.0 to 35.9 g/10 min, and the number of functional groups of 20 or less per 106 main-chain carbon atoms.
Abstract:
There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.5 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.5 to 1.4% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.8 to 4.0 g/10 min, and a number of —CF2H of more than 50 per 106 main-chain carbon atoms.
Abstract:
There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 6.0 to 7.6% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 1.2 to 1.9% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 2.8 to 4.4 g/10 min.