[특허]Composite core for electrical transmission cables

Ticona LLC

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특허 상세정보

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Composite core for electrical transmission cables

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01B-005/00 H01B-001/04 B29C-070/52 H01B-005/10 H01B-001/02 H01R-043/00 B29B-015/12 H01B-009/00 H01B-009/04 H01B-007/18 H01B-013/00 H01B-007/29 H01B-013/30
출원번호	US-0883769 (2015-10-15)
등록번호	US-9659680 (2017-05-23)
발명자 / 주소	Nelson, Sherri M. Eastep, David W. Tibor, Timothy L. Regan, Timothy A. Wesley, Michael L. Steihm, Richard
출원인 / 주소	Ticona LLC
대리인 / 주소	Dority & Manning, P.A.
인용정보	피인용 횟수 : 1 인용 특허 : 221

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A composite core for use in electrical cables, such as high voltage transmission cables is provided. The composite core contains at least one rod that includes a continuous fiber component surrounded by a capping layer. The continuous fiber component is formed from a plurality of unidirectionally aligned fiber rovings embedded within a thermoplastic polymer matrix. The present inventors have discovered that the degree to which the rovings are impregnated with the thermoplastic polymer matrix can be significantly improved through selective control over the impregnation process, and also through control over the degree of compression imparted to the rovings during formation and shaping of the rod, as well as the calibration of the final rod geometry. Such a well impregnated rod has a very small void fraction, which leads to excellent strength properties. Notably, the desired strength properties may be achieved without the need for different fiber types in the rod.

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1. An electrical transmission cable core, wherein the core extends in a longitudinal direction and comprises: at least one rod that contains a continuous fiber component comprising a plurality of consolidated thermoplastic impregnated rovings, the rovings containing continuous carbon fibers oriented in the longitudinal direction and a thermoplastic matrix that embeds the fibers, wherein the continuous carbon fibers constitute from about 25 wt. % to about 80 wt. % of the rod and the thermoplastic matrix constitutes from about 20 wt. % to about 75 wt. % of the rod; anda capping layer surrounding the continuous fiber component, wherein the capping layer has about 1 wt. % or less of continuous carbon fibers;wherein the rod has a minimum flexural modulus of about 10 Gigapascals, and wherein the rod has a tensile modulus of elasticity of about 50 Gigapascals or more. 2. The core of claim 1, wherein the continuous fibers have a ratio of ultimate tensile strength to mass per unit length of greater than about 1,000 Megapascals per gram per meter. 3. The core of claim 1, wherein the thermoplastic matrix includes a polyarylene sulfide. 4. The core of claim 3, wherein the polyarylene sulfide is polyphenylene sulfide. 5. The core of claim 1, wherein the capping layer comprises a polyether ether ketone. 6. The core of claim 1, wherein the continuous fibers constitute from about 30 wt. % to about 75 wt. % of the rod. 7. The core of claim 1, wherein the rod has a void fraction of about 3% or less. 8. The core of claim 1, wherein the rod has a flexural modulus of from about 15 to about 200 Gigapascals. 9. The core of claim 1, wherein the rod has a flexural modulus of from about 20 to about 150 Gigapascals. 10. The core of claim 1, wherein the rod has an ultimate tensile strength of about 300 Megapascals or more. 11. The core of claim 1, wherein the rod has an ultimate tensile strength of from about 400 Megapascals to about 5,000 Megapascals. 12. The core of claim 1, wherein the rod has a linear thermal expansion coefficient in the longitudinal direction in a range from about −0.25 to about 5 ppm per ° C. 13. The core of claim 1, wherein the capping layer contains a thermoplastic polymer having a dielectric strength of at least about 2 KV/mm. 14. The core of claim 1, wherein the capping layer comprises at least one additive comprising one of a mineral reinforcing agent, a lubricant, a flame retardant, a blowing agent, a foaming agent, an ultraviolet light resistant agent, a thermal stabilizer, or a pigment. 15. An electrical transmission cable core, wherein the core extends in a longitudinal direction and comprises: at least one rod that contains a continuous fiber component comprising a plurality of consolidated thermoplastic impregnated rovings, the rovings containing continuous fibers oriented in the longitudinal direction and a thermoplastic matrix that embeds the fibers, the thermoplastic matrix including a polyarylene sulfide, wherein the continuous fibers constitute from about 25 wt. % to about 80 wt. % of the rod and the thermoplastic matrix constitutes from about 20 wt. % to about 75 wt. % of the rod; anda capping layer surrounding the continuous fiber component, wherein the capping layer has about 1 wt. % or less of continuous fibers;wherein the rod has a flexural modulus of from about 15 to about 200 Gigapascals, and wherein the rod has a void fraction of about 3% or less. 16. The core of claim 15, wherein the continuous fibers have a ratio of ultimate tensile strength to mass per unit length of greater than about 1,000 Megapascals per gram per meter. 17. The core of claim 15, wherein the continuous fibers are carbon fibers. 18. The core of claim 15, wherein the polyarylene sulfide is polyphenylene sulfide. 19. The core of claim 15, wherein the capping layer comprises a polyether ether ketone. 20. The core of claim 15, wherein the continuous fibers constitute from about 30 wt. % to about 75 wt. % of the rod. 21. The core of claim 15, wherein the rod has a flexural modulus of from about 20 to about 150 Gigapascals. 22. The core of claim 15, wherein the rod has an ultimate tensile strength of about 300 Megapascals or more. 23. The core of claim 15, wherein the rod has an ultimate tensile strength of from about 400 Megapascals to about 5,000 Megapascals. 24. The core of claim 15, wherein the rod has a tensile modulus of elasticity of about 50 Gigapascals or more. 25. The core of claim 15, wherein the rod has a linear thermal expansion coefficient in the longitudinal direction in a range from about −0.25 to about 5 ppm per ° C. 26. The core of claim 15, wherein the rod has a diameter of from about 0.1 to about 50 millimeters. 27. The core of claim 15, wherein the capping layer contains a thermoplastic polymer having a dielectric strength of at least about 2 KV/mm. 28. The core of claim 15, wherein the capping layer comprises at least one additive comprising one of a mineral reinforcing agent, a lubricant, a flame retardant, a blowing agent, a foaming agent, an ultraviolet light resistant agent, a thermal stabilizer, or a pigment. 29. An electrical transmission cable core, wherein the core extends in a longitudinal direction and comprises: at least one rod that contains a continuous fiber component comprising a plurality of consolidated thermoplastic impregnated rovings, the rovings containing continuous fibers oriented in the longitudinal direction and a thermoplastic matrix that embeds the fibers, wherein the continuous fibers constitute from 30 wt. % to 75 wt. % of the rod and the thermoplastic matrix constitutes from 25 wt. % to 70 wt. % of the rod; anda capping layer surrounding the continuous fiber component, wherein the capping layer has 1 wt. % or less of continuous fibers;wherein the rod has a flexural modulus of from 15 to 200 Gigapascals and an ultimate tensile strength of 300 Megapascals or more;wherein the rod has a diameter of from 0.1 to 50 millimeters. 30. The core of claim 29, wherein the continuous fibers have a ratio of ultimate tensile strength to mass per unit length of greater than 1,000 Megapascals per gram per meter. 31. The core of claim 29, wherein the thermoplastic matrix includes a polyarylene sulfide. 32. The core of claim 31, wherein the polyarylene sulfide is polyphenylene sulfide. 33. The core of claim 29, wherein the capping layer comprises a polyether ether ketone. 34. The core of claim 29, wherein the rod has a void fraction of 3% or less. 35. The core of claim 29, wherein the rod has a flexural modulus of from 20 to 150 Gigapascals. 36. The core of claim 29, wherein the rod has an ultimate tensile strength of from 400 Megapascals to 5,000 Megapascals. 37. The core of claim 29, wherein the rod has a tensile modulus of elasticity of 50 Gigapascals or more. 38. The core of claim 29, wherein the rod has a linear thermal expansion coefficient in the longitudinal direction in a range from −0.25 to 5 ppm per ° C. 39. The core of claim 29, wherein the capping layer contains a thermoplastic polymer having a dielectric strength of at least 2 KV/mm. 40. The core of claim 29, wherein the capping layer comprises at least one additive comprising one of a mineral reinforcing agent, a lubricant, a flame retardant, a blowing agent, a foaming agent, an ultraviolet light resistant agent, a thermal stabilizer, or a pigment.

이 특허에 인용된 특허 (221)

이 특허를 인용한 특허 피인용횟수: 1

Faul, Kevin. Overbraided electrical cord with X pattern. USP201810D830311.

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Composite core for electrical transmission cables

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Composite core for electrical transmission cables

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