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US 2006/0131051 A1Published application
Abrasion resistant electrical wire
AssigneeGeneral Electric Company
InventorsVijay Mhetar, Vijay Rajamani, Kristopher Rexius, Sho Sato, Xiangyang Tai
Life of this patent
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Abstract
An electrical wire comprising a conductor and a covering disposed over the conductor wherein the conductor comprises a thermoplastic composition. The thermoplastic composition comprises a poly(arylene ether); a polyolefin, a block copolymer; and flame retardant. The thermoplastic composition demonstrates desirable abrasion resistance, tensile elongation and flexural modulus.
Claims27
An electrical wire comprising:
- a conductor;
- and
- a covering disposed over the conductor wherein the conductor comprises a thermoplastic composition and the thermoplastic composition comprises:
- (i) a poly(arylene ether);
- (ii) a polyolefin;
- (iii) a block copolymer;
- and
- (iv) a flame retardant
- wherein the electrical wire has an abrasion resistance of greater than 100 cycles, as determined by the scrape abrasion specification of ISO 6722 using a 7 Newton load, a needle having a 0.45 millimeter diameters, and an electrical wire having a conductor with a cross sectional area of 0.22 square millimeters and a covering with a thickness of 0.2 millimeters, and
- wherein the thermoplastic composition has a tensile elongation at break greater than 30% as determined by ASTM D638-03 using a Type I specimen and a speed of 50 millimeters per minute, and a flexural modulus less than 1800 Megapascals (Mpa) as determined by ASTM D790-03 using a speed of 1.27 millimeters per minute.
7 more elements
The electrical wire of claim I wherein the thermoplastic composition is essentially free of an alkenyl aromatic resin.
An electrical wire comprising:
- a conductor;
- and
- a covering disposed over the conductor wherein the conductor comprises a thermoplastic composition and the thermoplastic composition consists essentially of:
- (i) poly(arylene ether) having an initial intrinsic viscosity greater than 0.35 dl/g, as measured in chloroform at 25° C.;
- (ii) a polypropylene having a melting temperature greater than or equal to 145° C. and a melt flow rate of 0.4 to 15;
- (iii) a bis-aryl phosphate and
- (iv) a combination of two block copolymers having different aryl alkylene contents wherein a first block copolymer has an aryl alkylene content greater than or equal to 50 weight percent based on the total weight of the first block copolymer and a second block copolymer has an aryl alkylene content less than 50 weight percent based on the total weight of the second block copolymer
- wherein the electrical wire has an abrasion resistance of greater than 100 cycles, as determined by the scrape abrasion specification of ISO 6722 using a 7 Newton load, a needle having a 0.45 millimeter diameters, and an electrical wire having a conductor with a cross sectional area of 0.22 square millimeters and a covering with a thickness of 0.2 millimeters, and
- wherein the thermoplastic composition has a tensile elongation at break greater than 30%, as determined by ASTM D638-03 using a Type I specimen and a speed of 50 millimeters per minute, and a flexural modulus less than 1800 Megapascals (Mpa) as determined by ASTM D790-03 using a speed of 1.27 millimeters per minute.
6 more elements
An electrical wire comprising:
- a conductor;
- and
- a covering disposed over the conductor wherein the conductor comprises a thermoplastic composition and the thermoplastic composition consists essentially of:
- (i) 40 to 55 weight percent of a poly(arylene ether);
- (ii) 25 to 35 weight percent of a polyolefin;
- (iii) 7 to 12 weight percent of a block copolymer;
- and
- (iv) 8 to 12 weight percent of a flame retardant wherein the weight percents are based on the combined weight of the poly(arylene ether), the polyolefin, the block copolymer, and the flame retardant
- wherein the electrical wire has an abrasion resistance of greater than 100 cycles, as determined by the scrape abrasion specification of ISO 6722 using a 7 Newton load, a needle having a 0.45 millimeter diameters, and an electrical wire having a conductor with a cross sectional area of 0.22 square millimeters and a covering with a thickness of 0.2 millimeters, and
- wherein the thermoplastic composition has a tensile elongation at break greater than 30%, as determined by ASTM D638-03 using a Type I specimen and a speed of 50 millimeters per minute, and a flexural modulus less than 1800 Megapascals (Mpa) as determined by ASTM D790-03 using a speed of 1.27 millimeters per minute.
7 more elements
Dependencies are inferred from the claim text.