[특허]Low-permeation flexible fuel hose

[미국특허] Low-permeation flexible fuel hose 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16L-011/14 B32B-001/08 B32B-025/08 B32B-025/10 B32B-025/14 B32B-027/12 B32B-027/34 F16L-011/08 F16L-011/04 F02M-037/00
출원번호	US-0116879 (2011-05-26)
등록번호	US-9592648 (2017-03-14)
발명자 / 주소	Harris, Earl D. Miller, Lance D. Stripe, Dana S.
출원인 / 주소	GATES CORPORATION
대리인 / 주소	Dunlap, Esq., Paul N.
인용정보	피인용 횟수 : 1 인용 특허 : 40

초록 ▼

A flexible hose or a tubing having a barrier layer of polyamide 6 having an impact modifier, and/or branched molecular structure, a flexural modulus of 1 to 2 GPa and/or a tensile elongation of 100% or more. The hose may have additional layers such as an HNBR rubber inner tube, an EVM/CPE rubber blend outer cover, a textile or wire reinforcement, or the like. Permeability to ethanol- and methanol-containing fuels is very low. Permeability to B20 biofuels is very low.

대표청구항 ▼

1. A fuel hose suitable for biofuel or alcohol-containing fuel comprising: an HNBR rubber inner tube wherein said HNBR rubber is zinc free;a rubber outer cover based on an elastomer blend consisting of EVM and CPE;an intermediate barrier layer consisting essentially of an impact-modified polyamide 6 wherein the radial thickness of said barrier layer is in the range of from 0.025 mm to 0.76 mm; anda textile reinforcement disposed between said barrier layer and said outer cover. 2. The fuel hose of claim 1 wherein said polyamide 6 has branched molecular structure. 3. The fuel hose of claim 1 wherein the polyamide 6 has a flexural modulus of from 1 to 2 GPa. 4. The fuel hose of claim 3 wherein the polyamide 6 has a tensile elongation at break of about 100% or more. 5. The fuel hose of claim 1 comprising only non-fluoropolymer-based layers. 6. The fuel hose of claim 1 wherein said barrier layer is a seamless, tubular layer. 7. The fuel hose of claim 1 further comprising an elastomeric tie layer between said barrier layer and at least one of said rubber tube and rubber cover layers. 8. The fuel hose of claim 1 wherein said barrier layer is a seamless, tubular layer. 9. The fuel hose of claim 8 wherein said polyamide 6 exhibits the following physical properties: Tensile modulus according to ISO 527 type 1A of about 1850/1000 MPa;Tensile strength at yield according to ISO 527 type 1A of about 55/45 MPa;Tensile strain at break according to ISO 527 type 1A of about 150/220%;Flexural modulus according to ISO 178 of about 1750/850 MPa;Flexural maximum stress according to ISO 178 of about 70/45 MPa; andEither Charpy notched impact strength according to ISO 179/1eA of about 92/NB kJ/m2, wherein NB signifies No Break, orIzod notched impact strength according to ISO 180/1A of about 90/NB kJ/m2, wherein NB signifies No Break;wherein if two values are listed, the first is for Dry As Molded material, and the second value is for material conditioned according ISO 1110. 10. A hose comprising: an HNBR rubber inner tube wherein said HNBR rubber is zinc free;an EVM/CPE blend rubber outer cover;an intermediate barrier layer consisting essentially of an impact-modified polyamide 6 wherein the radial thickness of said barrier layer is in the range of from 0.025 mm to 0.76 mm; anda textile reinforcement disposed between said barrier layer and said outer cover. 11. The hose of claim 10 further comprising an HNBR rubber tie layer disposed between said barrier layer and said reinforcement. 12. The hose of claim 10 further comprising an EVM/CPE blend rubber tie layer between said barrier layer and said reinforcement. 13. The hose of claim 10 wherein the textile reinforcement comprises aramid fibers. 14. The hose of claim 10 wherein the polyamide 6 has branched molecular structure. 15. The hose of claim 10 wherein said polyamide 6 has a flexural modulus of from about 1 to about 2 GPa and a tensile elongation at break of 100% or more. 16. The hose of claim 10 having at least one of a permeability to gasoline of about 1 g/m2/day or less at 40° C. and a permeability to B20 biofuel of less than 1 g/m2/day at 40° C. when tested according to SAE J1737. 17. A hose system comprising: at least one length of hose according to claim 10 andat least one fitting, clamp, or fluid-handling device. 18. The hose system of claim 17 wherein said polyamide 6 exhibits the physical properties, mechanical properties, and thermal properties: Water absorption according to ISO 62 tested 24 h at 23° C. of about 1.20%;Density according to ISO 1183-A of about 1.05 g/cc;Tensile modulus according to ISO 527 type 1A of about 1850/1000 MPa;Tensile strength at yield according to ISO 527 type 1A of about 55/45 MPa;Tensile strain at break according to ISO 527 type 1A of about 150/220%;Flexural modulus according to ISO 178 of about 1750/850 MPa;Flexural maximum stress according to ISO 178 of about 70/45 MPa;At least one impact property selected from: Charpy notched impact strength according to ISO 179/1eA of about 92/NB kJ/m2, wherein NB signifies No Break;Charpy unnotched impact strength according to ISO 179/1eU NB/NB kJ/m2; andIzod notched impact strength according to ISO 180/1A of about 90/NB kJ/m2;Melting Temperature according to ISO 11357 of about 222° C.; andHeat deflection temperature at 1.8 MPa according to ISO 75/Af of about 55° C.;wherein if two values are listed, the first is for Dry As Molded material, and the second value is for material conditioned according ISO 1110. 19. The hose according to claim 8 wherein said polyamide 6 has branched molecular structure, a flexural modulus of from 1 to 2 GPa, and a tensile elongation at break of about 100% or more.

이 특허에 인용된 특허 (40) 인용/피인용 타임라인 분석

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Joachimi, Detlev; Dietrich, Hans-Jurgen; Morhenn, Heinrich; Scherer, Cliff; Gittinger, Andreas; Bruder, Friedrich-Karl, Method of producing branched polyamides.
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Satoshi Kito JP; Shigetarou Miyano JP, Multi-layer fuel tube.
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Luciano Bertero IT; Donato Dimattia IT, Multilayer fuel pipe.
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Chiles Daniel T. (Springfield MO) Chiles Richard M. (Springfield MO), Multiple layer flexible hose construction incorporating gas barrier.
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Nay,Renato; Hewel,Manfred, Polyamide molding compositions containing prepolymeric polyamides, a method for the preparation thereof and the use thereof.
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Cucinella Antonino,ITX ; Di Silvestro Giuseppe,ITX ; Guaita Cesare,ITX ; Speroni Franco,ITX ; Zhang Haichun,ITX, Polyamide, method for its manufacture and compounds containing it.
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Di Silvestro, Giuseppe; Speroni, Franco; Yuan, Cuiming; Zhang, Haichun, Polyamides with high fluidity, method for making same, compositions said polyamide.
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Haren Doyle V. (Clyde NC) Edwards William M. (Waynesville NC), Polymeric hose.
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Canard Pierre (Versailles FRX) Latourrette Bertrand (Le Raincy FRX) Schorsch Gilbert (Colombes FRX), Polymeric matrices reinforced with highly dispersed synthetic zeolitic particulates.
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Wilson, Reji Paul; Henry, Brian, Refrigerant hose.
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Ito Tomohide (Kasugai JPX), Refrigerant transporting hose.
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Epstein Bennett N. (Wilmington DE), Tough thermoplastic nylon compositions.
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[미국특허] Low-permeation flexible fuel hose 원문보기

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