CN103712001B - Automobile high-barrier nylon pipeline and preparation method - Google Patents

Automobile high-barrier nylon pipeline and preparation method Download PDF

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Publication number
CN103712001B
CN103712001B CN201310618447.0A CN201310618447A CN103712001B CN 103712001 B CN103712001 B CN 103712001B CN 201310618447 A CN201310618447 A CN 201310618447A CN 103712001 B CN103712001 B CN 103712001B
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district temperature
temperature
machine barrel
head
district
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CN201310618447.0A
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CN103712001A (en
Inventor
张洪起
张洪亮
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Tianjin Peng Ling group Limited by Share Ltd
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Tianjin Pengling Rubber Hose Co Ltd
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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
    • 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 present invention relates to automobile high-barrier nylon pipeline and preparation method, adopt three-layer composite structure, be followed successively by from the inside to the outside: polyethylene-tetrafluoroethylene internal layer, polyamide 9T mesosphere and nylon 12 are outer.In pipeline wall thickness for 100%, the thickness 15% ~ 25% of internal layer ETFE, the thickness 10% ~ 20% of mesosphere PA9T, the thickness 60% ~ 70% of outer PA12.The present invention has excellent fuel oil barrier property and chemical species performance, and its permeability is less than 0.05g/m 2bursting pressure after/d, chemically-resistant is greater than 6.8MPa.The present invention has the high barrier property of resistance to fuel oil, chemical species performance, high load performance, has extremely significantly meaning for environmental protect pollution and safe driving environment.

Description

Automobile high-barrier nylon pipeline and preparation method
Technical field
The present invention relates to automobile fuel oil pipeline field, particularly a kind of adopt polyamide 9T and ethylene-tetrafluoroethylene copolymer high-obstruction to make Nylon for Automobile class composite fuel pipeline and preparation method.
Background technique
At Fuel Delivery System, be used as individual layer fuel pipe by PA11 or PA12, be proved to be safe and reliable through the uses of 50 years.National 863 clearly proposes methyl alcohol in the works and uses as the alternative energy source of gasoline, and a lot of automobile factory all releases methanol fuel automobile now, but state five mark follows the appearance of Europe five standard closely, and fuel oil infiltration is defined as 0.05g/m 2/ d, traditional automobile rubber-like fuel pipe and individual layer nylon pipeline can not meet chemical corrosion resistance and the infiltrative requirement of low fuel oil of automobile fuel oil pipeline.The application of people to the material for fuel pipe is all forced to propose harsher requirement.
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 is oily to the ultra-low penetration of fuel pipe, the performance requirement of resistance to chemical attack to meet fresh fuel.
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) outer.
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 are outer.
In pipeline wall thickness for 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, adopt coextrusion processes to realize the production of three layers of straight type pipeline of nylon tube, its each layer extrusion temperature is as follows:
The temperature in extruder each stage that internal layer ETFE sets is: machine barrel one district temperature 270 ~ 290 DEG C, machine barrel two district temperature 290 ~ 310 DEG C, machine barrel three district temperature is 300 ~ 320 DEG C, machine barrel four district temperature is 310 ~ 330 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C;
The temperature that mesosphere PA9T sets extruder each stage is: machine barrel one district temperature 270 ~ 290 DEG C, machine barrel two district temperature 290 ~ 310 DEG C, machine barrel three district temperature is 300 ~ 320 DEG C, machine barrel four district temperature is 310 ~ 330 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C;
The temperature that outer PA12 sets extruder each stage is: machine barrel one district temperature 220 ~ 240 DEG C, machine barrel two district temperature is 230 ~ 250 DEG C, machine barrel three district temperature is 230 ~ 250 DEG C, machine barrel four district temperature is 240 ~ 260 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C.
Internal layer of the present invention selects polyethylene-tetrafluoroethylene (ETFE) material that can use in oil-fired system for a long time, no matter at gasoline oil-fired system or the fuel oil barrier property all in diesel fuel system with dimensional stability and the excellence keeping excellent.
Intermediate barrier layer material selection polyamide 9T (PA9T) material of the present invention, PA9T has high resistivity to fuel oil and chemical agent, can reach the permeability under more strict regulations.
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 trend to wall thickness specifications gradually.
The present invention has excellent fuel oil barrier property and chemical species performance, and its permeability is less than 0.05g/m 2bursting pressure after/d, chemically-resistant is greater than 6.8MPa.
Embodiment
The present invention is further detailed explanation below.
The present invention is divided into three layers: internal layer is ETFE, and mesosphere is PA9T, and skin is PA12.
The needs that nylon tube size of the present invention is different according to automobile factory are selected, and with internal diameter 6mm, wall thickness is 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 in setting extruder each stage is: machine barrel one district temperature 270 DEG C, machine barrel two district temperature 290 DEG C, machine barrel three district temperature is 300 DEG C, machine barrel four district temperature is 310 DEG C, head one district temperature is 310 DEG C, head two district temperature is 310 DEG C, and head three district temperature is 310 DEG C, and die temperature is set as 310 DEG C.
Mesosphere PA9T extrusion temperature is set as: machine barrel one district temperature 270 DEG C, machine barrel two district temperature 290 DEG C, machine barrel three district temperature is 300 DEG C, machine barrel four district temperature is 310 DEG C, head one district temperature is 310 DEG C, head two district temperature is 310 DEG C, and head three district temperature is 310 DEG C, and die temperature is set as 310 DEG C.
Outer PA12 extrusion temperature is set as: machine barrel one district temperature 220 DEG C, machine barrel two district temperature is 230 DEG C, machine barrel three district temperature is 230 DEG C, machine barrel four district temperature is 240 DEG C, head one district temperature is 310 DEG C, head two district temperature is 310 DEG C, and head three district temperature is 310 DEG C, and die temperature is set as 310 DEG C.
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: machine barrel one district temperature 280 DEG C, machine barrel two district temperature 300 DEG C, machine barrel three district temperature is 310 DEG C, machine barrel four district temperature is 320 DEG C, head one district temperature is 320 DEG C, head two district temperature is 320 DEG C, and head three district temperature is 320 DEG C, and die temperature is set as 320 DEG C.
Mesosphere PA9T extrusion temperature is set as: machine barrel one district temperature 280 DEG C, machine barrel two district temperature 300 DEG C, machine barrel three district temperature is 310 DEG C, machine barrel four district temperature is 320 DEG C, head one district temperature is 320 DEG C, head two district temperature is 320 DEG C, and head three district temperature is 320 DEG C, and die temperature is set as 320 DEG C.
Outer PA12 extrusion temperature is set as: machine barrel one district temperature 230 DEG C, machine barrel two district temperature is 240 DEG C, machine barrel three district temperature is 240 DEG C, machine barrel four district temperature is 250 DEG C, head one district temperature is 320 DEG C, head two district temperature is 320 DEG C, and head three district temperature is 320 DEG C, and die temperature is set as 320 DEG C.
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: machine barrel one district temperature 290 DEG C, machine barrel two district temperature 310 DEG C, machine barrel three district temperature is 320 DEG C, machine barrel four district temperature is 330 DEG C, head one district temperature is 330 DEG C, head two district temperature is 330 DEG C, and head three district temperature is 330 DEG C, and die temperature is set as 330 DEG C.
Mesosphere PA9T extrusion temperature is set as: machine barrel one district temperature 290 DEG C, machine barrel two district temperature 310 DEG C, machine barrel three district temperature is 320 DEG C, machine barrel four district temperature is 330 DEG C, head one district temperature is 330 DEG C, head two district temperature is 330 DEG C, and head three district temperature is 330 DEG C, and die temperature is set as 330 DEG C.
Outer PA12 extrusion temperature is set as: machine barrel one district temperature 240 DEG C, machine barrel two district temperature 250 DEG C, machine barrel three district temperature is 250 DEG C, machine barrel four district temperature is 260 DEG C, head one district temperature is 330 DEG C, head two district temperature is 330 DEG C, and head three district temperature is 330 DEG C, and die temperature is set as 330 DEG C.
The testing property of each embodiment is in table 1:
The partial properties of table 1 embodiment product
Present invention accomplishes the development trend of fuel pipe, the high barrier property of resistance to fuel oil, chemical species performance, high load performance, have extremely significantly meaning for environmental protect pollution and safe driving environment.

Claims (1)

1. an automobile preparation method for 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 are outer; In pipeline wall thickness for 100%, the thickness 15% ~ 25% of internal layer ETFE, the thickness 10% ~ 20% of mesosphere PA9T, the thickness 60% ~ 70% of outer PA12; Adopt coextrusion processes to realize the production of three layers of straight type pipeline of nylon tube, its each layer extrusion temperature is as follows:
The temperature in extruder each stage of inner layer polyethylene-tetrafluoroethylene setting is: machine barrel one district temperature 270 ~ 290 DEG C, machine barrel two district temperature 290 ~ 310 DEG C, machine barrel three district temperature is 300 ~ 320 DEG C, machine barrel four district temperature is 310 ~ 330 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C;
The temperature in mesosphere polyamide 9T setting extruder each stage is: machine barrel one district temperature 270 ~ 290 DEG C, machine barrel two district temperature 290 ~ 310 DEG C, machine barrel three district temperature is 300 ~ 320 DEG C, machine barrel four district temperature is 310 ~ 330 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C;
Outer nylon 12 sets the temperature in extruder each stage and is: machine barrel one district temperature 220 ~ 240 DEG C, machine barrel two district temperature is 230 ~ 250 DEG C, machine barrel three district temperature is 230 ~ 250 DEG C, machine barrel four district temperature is 240 ~ 260 DEG C, head one district temperature is 310 ~ 330 DEG C, head two district temperature is 310 ~ 330 DEG C, and head three district temperature is 310 ~ 330 DEG C, and die temperature is set as 310 ~ 330 DEG C.
CN201310618447.0A 2013-11-27 2013-11-27 Automobile high-barrier nylon pipeline and preparation method Active CN103712001B (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019040551A1 (en) * 2017-08-25 2019-02-28 Lubrizol Advanced Materials, Inc. Multi-layer, flexible tubular article for fuel line applications

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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
WO2001081077A1 (en) * 2000-04-24 2001-11-01 Asahi Glass Company, Limited Hose for fuel
JP2009127631A (en) * 2007-11-19 2009-06-11 Kurashiki Kako Co Ltd Fuel tube
JP5624387B2 (en) * 2010-06-30 2014-11-12 三桜工業株式会社 Multilayer resin tubular body for automobile engine room

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

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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.

CP03 Change of name, title or address