CN103712001A - High-barrier nylon pipeline for automobile and method for manufacturing high-barrier nylon pipeline - Google Patents
High-barrier nylon pipeline for automobile and method for manufacturing high-barrier nylon pipeline Download PDFInfo
- Publication number
- CN103712001A CN103712001A CN201310618447.0A CN201310618447A CN103712001A CN 103712001 A CN103712001 A CN 103712001A CN 201310618447 A CN201310618447 A CN 201310618447A CN 103712001 A CN103712001 A CN 103712001A
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- temperature
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- machine barrel
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- pipeline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a high-barrier nylon pipeline for an automobile and a method for manufacturing the high-barrier nylon pipeline. The high-barrier nylon pipeline is of a three-layer composite structure and sequentially comprises an inner polyethylene-tetrafluoroethylene layer, a middle polyamide 9T layer and an outer nylon-12 layer from the inside to the outside. The thickness of the inner ETFE (ethylene tetrafluoroethylene) layer accounts for 15%-25% of the thickness of the wall of the pipeline, the thickness of the middle PA (polyamide) 9T layer accounts for 10%-20% of the thickness of the wall of the pipeline, and the thickness of the outer PA12 layer accounts for 60%-70% of the thickness of the wall of the pipeline. The high-barrier nylon pipeline and the method have the advantages that the high-barrier nylon pipeline is excellent in fuel oil barrier property and chemical substance resistance, the permeability of the high-barrier nylon pipeline is lower than 0.05g/m<2>/d, and bearable post-chemical burst pressure is higher than 6.8MPa; the high-barrier nylon pipeline is high in fuel oil resistance, fuel oil barrier property, chemical substance resistance and bearing strength, and has an extremely obvious significance on reducing environmental pollution and improving safe driving environments.
Description
Technical field
The present invention relates to automobile fuel oil pipeline field, particularly a kind of Nylon for Automobile class composite fuel pipeline and preparation method who adopts polyamide 9T and ethylene-tetrafluoroethylene copolymer high-obstruction to make.
Background technique
At Fuel Delivery System, by PA11 or PA12, be used as individual layer fuel pipe, through the uses of 50 years, be proved to be safe and reliable.National 863 has clearly proposed in the works methyl alcohol and has used as the alternative energy source of gasoline, and now a lot of automobile factorys all release methanol fuel automobile, but state's five marks follow the appearance of Europe five standards closely, and fuel oil infiltration regulation is 0.05g/m
2/ d, traditional automobile can not meet chemical corrosion resistance and the infiltrative requirement of low fuel oil of automobile fuel oil pipeline with rubber-like fuel pipe and individual layer nylon pipeline.All force people to propose harsher requirement to the application of the material for fuel pipe.
Based on more than, the present invention proposes to adopt polyamide 9T (PA9T), polyethylene-tetrafluoroethylene (ETFE) and nylon 12(PA12) preparation of carrying out high-barrier nylon fuel pipe road meets the performance requirement of fresh fuel oil to the ultra-low penetration of fuel pipe, resistance to chemical attack.
Summary of the invention
The present invention adopts three-layer composite structure direction from inside to outside to comprise: polyethylene-tetrafluoroethylene (ETFE) internal layer, polyamide 9T (PA9T) mesosphere, nylon 12(PA12) skin.
Technological scheme of the present invention is as follows:
Automobile high-barrier nylon pipeline, adopts three-layer composite structure, is followed successively by from the inside to the outside: polyethylene-tetrafluoroethylene internal layer, polyamide 9T mesosphere and nylon 12 skins.
Take pipeline wall thickness as 100%, the thickness 15%～25% of internal layer ETFE, the thickness 10%～20% of mesosphere PA9T, the thickness 60%～70% of outer PA12.
The preparation method of pipeline of the present invention, adopts coextrusion processes to realize the production of three layers of straight type pipeline of nylon tube, and its each layer of extrusion temperature is as follows:
The temperature in each stage of extruder that internal layer ETFE sets is: 270～290 ℃ of machine barrel one district's temperature, 290～310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300～320 ℃, machine barrel four district's temperature are 310～330 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃;
The temperature that mesosphere PA9T sets each stage of extruder is: 270～290 ℃ of machine barrel one district's temperature, 290～310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300～320 ℃, machine barrel four district's temperature are 310～330 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃;
The temperature that outer PA12 sets each stage of extruder is: 220～240 ℃ of machine barrel one district's temperature, machine barrel two district's temperature are 230～250 ℃, machine barrel three district's temperature are 230～250 ℃, machine barrel four district's temperature are 240～260 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃.
Internal layer of the present invention is selected polyethylene-tetrafluoroethylene (ETFE) material that can use in oil-fired system for a long time, no matter all have the excellent dimensional stability of maintenance and excellent fuel oil barrier property in gasoline oil-fired system or in diesel oil oil-fired system.
Intermediate barrier layer material selection polyamide 9T of the present invention (PA9T) material, PA9T has high resistivity to fuel oil and chemical agent, can reach the permeability under strict regulations more.
External diameter of the present invention is selected according to the different needs of automobile factory, and from 0.85mm to 1.5mm not etc., but the fuel oil nylon tube that wall thickness is 1mm becomes main flow trend to wall thickness specifications gradually.
The present invention has excellent fuel oil barrier property and chemically-resistant material performance, and its permeability is less than 0.05g/m
2bursting pressure after/d, chemically-resistant is greater than 6.8MPa.
Embodiment
Below the present invention is further detailed explanation.
The present invention is divided into three layers: internal layer is ETFE, and mesosphere is PA9T, and skin is PA12.
Nylon tube size of the present invention is selected according to the different needs of automobile factory, and with internal diameter 6mm, wall thickness is that 1mm is example.
Embodiment 1
The thickness of internal layer ETFE is 0.15mm; PA9T intermediate layer thickness is 0.2mm; PA12 outer layer thickness is 0.65mm.
The temperature of setting each stage of extruder is: 270 ℃ of machine barrel one district's temperature, 290 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300 ℃, machine barrel four district's temperature are 310 ℃, head one district's temperature is 310 ℃, head two district's temperature are 310 ℃, and head three district's temperature are 310 ℃, and die temperature is set as 310 ℃.
Mesosphere PA9T extrusion temperature is set as: 270 ℃ of machine barrel one district's temperature, 290 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300 ℃, machine barrel four district's temperature are 310 ℃, head one district's temperature is 310 ℃, head two district's temperature are 310 ℃, and head three district's temperature are 310 ℃, and die temperature is set as 310 ℃.
Outer PA12 extrusion temperature is set as: 220 ℃ of machine barrel one district's temperature, machine barrel two district's temperature are 230 ℃, machine barrel three district's temperature are 230 ℃, machine barrel four district's temperature are 240 ℃, head one district's temperature is 310 ℃, head two district's temperature are 310 ℃, and head three district's temperature are 310 ℃, and die temperature is set as 310 ℃.
Embodiment 2
The thickness of internal layer ETFE is 0.2mm; PA9T intermediate layer thickness is 0.1mm; PA12 outer layer thickness is 0.7mm.
Internal layer ETFE extrusion temperature is set as: 280 ℃ of machine barrel one district's temperature, 300 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 310 ℃, machine barrel four district's temperature are 320 ℃, head one district's temperature is 320 ℃, head two district's temperature are 320 ℃, and head three district's temperature are 320 ℃, and die temperature is set as 320 ℃.
Mesosphere PA9T extrusion temperature is set as: 280 ℃ of machine barrel one district's temperature, 300 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 310 ℃, machine barrel four district's temperature are 320 ℃, head one district's temperature is 320 ℃, head two district's temperature are 320 ℃, and head three district's temperature are 320 ℃, and die temperature is set as 320 ℃.
Outer PA12 extrusion temperature is set as: 230 ℃ of machine barrel one district's temperature, machine barrel two district's temperature are 240 ℃, machine barrel three district's temperature are 240 ℃, machine barrel four district's temperature are 250 ℃, head one district's temperature is 320 ℃, head two district's temperature are 320 ℃, and head three district's temperature are 320 ℃, and die temperature is set as 320 ℃.
Embodiment 3
The thickness of internal layer ETFE is 0.25mm; PA9T intermediate layer thickness is 0.15mm; PA12 outer layer thickness is 0.6mm.
Internal layer ETFE extrusion temperature is set as: 290 ℃ of machine barrel one district's temperature, 310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 320 ℃, machine barrel four district's temperature are 330 ℃, head one district's temperature is 330 ℃, head two district's temperature are 330 ℃, and head three district's temperature are 330 ℃, and die temperature is set as 330 ℃.
Mesosphere PA9T extrusion temperature is set as: 290 ℃ of machine barrel one district's temperature, 310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 320 ℃, machine barrel four district's temperature are 330 ℃, head one district's temperature is 330 ℃, head two district's temperature are 330 ℃, and head three district's temperature are 330 ℃, and die temperature is set as 330 ℃.
Outer PA12 extrusion temperature is set as: 240 ℃ of machine barrel one district's temperature, 250 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 250 ℃, machine barrel four district's temperature are 260 ℃, head one district's temperature is 330 ℃, head two district's temperature are 330 ℃, and head three district's temperature are 330 ℃, and die temperature is set as 330 ℃.
Each embodiment's testing property is in Table 1:
The partial properties of table 1 embodiment product
The present invention has met the development trend of fuel pipe, and the high barrier property of resistance to fuel oil, chemically-resistant material performance, high load performance have extremely significantly meaning for improving environmental pollution and safe driving environment.
Claims (3)
1. an automobile high-barrier nylon pipeline, is characterized in that adopting three-layer composite structure, is followed successively by from the inside to the outside: polyethylene-tetrafluoroethylene internal layer, polyamide 9T mesosphere and nylon 12 skins.
2. nylon pipeline as claimed in claim 1, is characterized in that take that pipeline wall thickness is as 100%, the thickness 15%～25% of internal layer ETFE, the thickness 10%～20% of mesosphere PA9T, the thickness 60%～70% of outer PA12.
3. the preparation method of the nylon pipeline described in claim 1 or 2, is characterized in that adopting coextrusion processes to realize the production of three layers of straight type pipeline of nylon tube, and its each layer of extrusion temperature is as follows:
The temperature in each stage of extruder that inner layer polyethylene-tetrafluoroethylene is set is: 270～290 ℃ of machine barrel one district's temperature, 290～310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300～320 ℃, machine barrel four district's temperature are 310～330 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃;
The temperature that mesosphere polyamide 9T is set each stage of extruder is: 270～290 ℃ of machine barrel one district's temperature, 290～310 ℃ of machine barrel two district's temperature, machine barrel three district's temperature are 300～320 ℃, machine barrel four district's temperature are 310～330 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃;
The temperature that outer nylon 12 is set each stage of extruder is: 220～240 ℃ of machine barrel one district's temperature, machine barrel two district's temperature are 230～250 ℃, machine barrel three district's temperature are 230～250 ℃, machine barrel four district's temperature are 240～260 ℃, head one district's temperature is 310～330 ℃, head two district's temperature are 310～330 ℃, and head three district's temperature are 310～330 ℃, and die temperature is set as 310～330 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618447.0A CN103712001B (en) | 2013-11-27 | 2013-11-27 | Automobile high-barrier nylon pipeline and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618447.0A CN103712001B (en) | 2013-11-27 | 2013-11-27 | Automobile high-barrier nylon pipeline and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103712001A true CN103712001A (en) | 2014-04-09 |
| CN103712001B CN103712001B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310618447.0A Active CN103712001B (en) | 2013-11-27 | 2013-11-27 | Automobile high-barrier nylon pipeline and preparation method |
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| Country | Link |
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| CN (1) | CN103712001B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111132829A (en) * | 2017-08-25 | 2020-05-08 | 路博润先进材料公司 | Multilayer flexible tubular article in fuel line applications |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0724964A (en) * | 1993-07-09 | 1995-01-27 | Asahi Glass Co Ltd | Laminate consisting of fluororesin and epichlorohydrin rubber |
| EP1223030A2 (en) * | 2001-01-12 | 2002-07-17 | Tokai Rubber Industries, Ltd. | Fuel hose of low fuel permeability |
| US20030035914A1 (en) * | 2000-04-24 | 2003-02-20 | Asahi Glass Company Limited | Hose for fuel |
| CN100402911C (en) * | 2004-12-17 | 2008-07-16 | 东海橡胶工业株式会社 | Piping unit for transporting fuel |
| JP2009127631A (en) * | 2007-11-19 | 2009-06-11 | Kurashiki Kako Co Ltd | Fuel tube |
| CN202032198U (en) * | 2011-04-20 | 2011-11-09 | 上海亚大汽车塑料制品有限公司 | Double blocking nylon pipeline |
| WO2012002442A1 (en) * | 2010-06-30 | 2012-01-05 | 三桜工業株式会社 | Multilayered resin tube-shaped body |
| CN202152884U (en) * | 2011-07-20 | 2012-02-29 | 晋州市安达汽车配件有限公司 | Low-seepage double-layered composite oil transportation hose |
-
2013
- 2013-11-27 CN CN201310618447.0A patent/CN103712001B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0724964A (en) * | 1993-07-09 | 1995-01-27 | Asahi Glass Co Ltd | Laminate consisting of fluororesin and epichlorohydrin rubber |
| US20030035914A1 (en) * | 2000-04-24 | 2003-02-20 | Asahi Glass Company Limited | Hose for fuel |
| EP1223030A2 (en) * | 2001-01-12 | 2002-07-17 | Tokai Rubber Industries, Ltd. | Fuel hose of low fuel permeability |
| CN100402911C (en) * | 2004-12-17 | 2008-07-16 | 东海橡胶工业株式会社 | Piping unit for transporting fuel |
| JP2009127631A (en) * | 2007-11-19 | 2009-06-11 | Kurashiki Kako Co Ltd | Fuel tube |
| WO2012002442A1 (en) * | 2010-06-30 | 2012-01-05 | 三桜工業株式会社 | Multilayered resin tube-shaped body |
| CN202032198U (en) * | 2011-04-20 | 2011-11-09 | 上海亚大汽车塑料制品有限公司 | Double blocking nylon pipeline |
| CN202152884U (en) * | 2011-07-20 | 2012-02-29 | 晋州市安达汽车配件有限公司 | Low-seepage double-layered composite oil transportation hose |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111132829A (en) * | 2017-08-25 | 2020-05-08 | 路博润先进材料公司 | Multilayer flexible tubular article in fuel line applications |
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| Publication number | Publication date |
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| CN103712001B (en) | 2016-01-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Address after: 300270 No. 1703, Ge Wan Road, Zhong Tang Industrial Zone, Binhai New Area, Tianjin Patentee after: Tianjin Peng Ling group Limited by Share Ltd Address before: 300277 No. 1703, Ge Wan Road, Grand Port, Tianjin Patentee before: Tianjin Pengling Rubber Tube Co., Ltd. |