WO2018142079A1 - Conduite de circulation de fluide pour vehicule automobile, son procede de fabrication et son utilisation en tant que tuyau de refroidissement de fluide moteur de vehicule automobile - Google Patents
Conduite de circulation de fluide pour vehicule automobile, son procede de fabrication et son utilisation en tant que tuyau de refroidissement de fluide moteur de vehicule automobile Download PDFInfo
- Publication number
- WO2018142079A1 WO2018142079A1 PCT/FR2018/050242 FR2018050242W WO2018142079A1 WO 2018142079 A1 WO2018142079 A1 WO 2018142079A1 FR 2018050242 W FR2018050242 W FR 2018050242W WO 2018142079 A1 WO2018142079 A1 WO 2018142079A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyolefin
- tpe
- pipe
- polymer
- mixture
- Prior art date
Links
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
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/025—Copolymers of unspecified olefins with monomers other than olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Definitions
- FLUID CIRCULATION PIPE FOR A MOTOR VEHICLE, METHOD FOR MANUFACTURING THE SAME AND USE THEREOF AS MOTOR VEHICLE MOTOR FLUID COOLING PIPE
- the present invention relates to the field of fluid circulation conduits. More particularly, the invention relates to fluid circulation lines for a motor vehicle, such as engine fluid cooling pipe, as well as their manufacturing process.
- Fluid circulation lines such as pipes used in the automotive industry, are particularly used to convey a coolant, such as a mixture of water / ethylene glycol, in the engine cooling circuit.
- a coolant such as a mixture of water / ethylene glycol
- the main constraints of these pipes concern the resistance to high temperatures and the pressure during engine operation, as well as their resistance to aggression of the transported liquid. In particular, it is avoided the use of polyurethane incompatible with the contact of the fluids containing a glycol.
- these fluid circulation lines such as engine coolant pipes, are generally made of one or more layers of elastomeric polymer material (such as rubber), reinforced by knitting or braiding of textile material or aramid or polyester fibers.
- elastomeric polymer material such as rubber
- the inner layer is made of polyethylene, preferably high density, grafted with a silane, and the outer layer is polypropylene.
- a pipe for a cooling circuit especially a heat engine, formed of at least three distinct layers.
- These layers consist, from the inside to the outside, of a cross-linked polyethylene inner layer, a polypropylene intermediate layer and an outer layer of thermoplastic elastomer material based on polyolefinic material, for example an EPDIW elastomeric alloy. polypropylene.
- the polyethylene of the inner layer is, for example, crosslinked with silanes.
- Such a multilayer structure involving a multiplicity of different polymer materials, is still too complex to give rise to economically interesting production.
- these multilayer structures comprise materials which are difficult to separate with a view to their recycling.
- a first object of the invention is therefore to overcome the drawbacks described above and to propose a fluid circulation duct whose wall thickness is further reduced, while maintaining the strength required for its use, particularly as a motor vehicle fluid coolant pipe.
- Another object of the invention is to reduce the weight of cooling to further lighten the vehicles.
- Another object of the invention is to provide a fluid circulation conduit comprising a reduced number of polymer materials, for simpler manufacturing and therefore faster and more economical.
- Another object of the invention is to provide a fluid circulation pipe that can be easily recycled.
- the present invention relates to a cooling fluid circulation line for a motor vehicle, such as a motor fluid cooling pipe, characterized in that the wall of the pipe consists of a single layer made of a polymeric material. comprising the mixture of at least two polymeric materials of different nature, one referred to as the first material being a polyolefin and the other referred to as the second material being a thermoplastic elastomeric polymer (TPE).
- the wall of the pipe consists of a single layer made of a polymeric material consisting exclusively of the mixture of said first material and said second material.
- conduit are hereinafter referred to throughout the text any tube, tubing, pipe, pipe, and therefore including the engine fluid cooling pipes.
- the inventors have been able, surprisingly, to carry out a monolayer wall pipe satisfying the criteria presented in the introduction, by means of a mixture of polyolefin and a thermoplastic elastomer polymer, whereas these two types of polymers are used, in the FR2797673, an outer layer of the engine fluid cooling pipes, in addition to other inner layers or and / or intermediate.
- the layer formed of polyolefin and an elastomeric polymer thermoplastic is therefore not in contact with the glycol-based heat transfer fluid.
- the thickness of the single-layer wall is reduced, which makes it easier to insert this pipe in restricted spaces, as are the current engine compartments of motor vehicles or battery packs.
- the polymeric material of said pipe contains a polyolefin content of at least 30% by weight, preferably at least 40% by mass.
- this polymeric material may contain a polyolefin content of between 30% and 70% by weight, preferably between 40 and 60% by weight.
- the choice of the mass proportions, within these ranges, is a function, in particular, of the desired mechanical strength for driving, and its destination.
- the properties of the pipe can be altered: below 30% by mass, the performances, in particular the resistance to pressure, are degraded, and beyond 70% by mass, the material becomes too rigid, so more difficult to install on the vehicle and the driving system transmits too much effort to the interfaces.
- thermoplastic elastomer polymer which in particular gives said pipe a certain flexibility, is preferably a polyolefinic elastomer polymer, for example a vulcanized elastomer.
- Said polyolefinically based thermoplastic elastomer polymer advantageously has a Shore A hardness of between 30 and 70, preferably between 35 and 65, more preferably between 40 and 65.
- Said first material is a polyolefin chosen from polypropylene (PP), polyethylene (PE), preferably high density polyethylene (HDPE), a crosslinked polyethylene (PER) or a mixture thereof.
- PP polypropylene
- PE polyethylene
- HDPE high density polyethylene
- PER crosslinked polyethylene
- the present invention also relates to the method of manufacturing a fluid circulation line as described above.
- This method comprises an operation of mixing at least one polyolefin and the thermoplastic elastomer polymer (TPE), a step of extruding said mixture in a screw extruder, followed by a step of forming the pipe, the operation of mixing the polyolefin and the thermoplastic elastomeric polymer (TPE) being carried out upstream of the extruder or at the inlet thereof.
- This is a step of extruding the mixture of the two polymers polyolefin and thermoplastic elastomer polymer leading to a single-layer structure, not a co-extrusion of two polymers leading to a two-layer structure.
- the plant for carrying out this process therefore comprises either a feed hopper for each of the polymers, with a mixing zone upstream of the screw extruder, or at the inlet of the latter, or a single hopper. feed receiving the two polymers in the desired proportions (in the form of a premix).
- the extrusion of said mixture comprising the polyolefin and the thermoplastic elastomer polymer is advantageously carried out at a temperature of between 180 and 240 ° C., preferably between 200 and 220 ° C. Such a temperature allows a good homogenization of the two different materials in the cylinder of the extruder during the extrusion step.
- the forming is carried out in a heating chamber.
- the present invention also relates to the use of said fluid circulation line as described above, as a coolant pipe, such as for a heat engine, electric motor, electric converter or vehicle battery.
- the mixture in proportions by weight 40/60 of polypropylene (PP) and a thermoplastic elastomer polymer based on vulcanized polyolefinic base (TPV), for example of the brand Santoprene®
- PP polypropylene
- TSV thermoplastic elastomer polymer based on vulcanized polyolefinic base
- connection elements - ...
- the tubular pipe has a monolayer wall with a thickness of between 2 and 4 mm. This reduced thickness and its density close to 0.95 makes it possible to reduce, with equivalent mechanical properties, the weight of the pipe of the order of 40% compared to a pipe having the same mechanical performance, made of vulcanized rubber (the density is generally between 1, 15 and 1, 20) with a textile reinforcement, 3 to 5 mm thick.
- the pipe according to the invention can withstand temperatures ranging from -40 ° C to 125 ° C, and simultaneously at pressures of the order of 1 to 4 bars relative.
- thermoplastic elastomer polymer in the polymer material forming the wall of the pipe has several advantages, among which:
- this single-layer wall formed of polypropylene (PP) and thermoplastic elastomer polymer based on a vulcanized polyolefinic base (TPV) is able to withstand the chemical attack of the transported heat transfer fluid, especially when it contains glycol, and to withstand the pressures and high temperatures especially during engine operation.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112019013481-6A BR112019013481A2 (pt) | 2017-02-02 | 2018-02-01 | Tubo de fluxo de fluido para um veículo motor, seu método de produção, e seu uso como um tubo de fluido de resfriamento de motor de veículo motor |
US16/480,099 US11092263B2 (en) | 2017-02-02 | 2018-02-01 | Fluid circulation pipe for motor vehicle, method for manufacturing same and use thereof as motor vehicle engine coolant hose |
CN201880008280.7A CN110268015A (zh) | 2017-02-02 | 2018-02-01 | 机动车用流体循环管、其制造方法及其作为机动车发动机冷却液软管的用途 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1750869 | 2017-02-02 | ||
FR1750869A FR3062446B1 (fr) | 2017-02-02 | 2017-02-02 | Conduite de circulation de fluide pour vehicule automobile, son procede de fabrication et son utilisation en tant que tuyau de refroidissement de fluide moteur de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018142079A1 true WO2018142079A1 (fr) | 2018-08-09 |
Family
ID=58992978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2018/050242 WO2018142079A1 (fr) | 2017-02-02 | 2018-02-01 | Conduite de circulation de fluide pour vehicule automobile, son procede de fabrication et son utilisation en tant que tuyau de refroidissement de fluide moteur de vehicule automobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US11092263B2 (fr) |
CN (1) | CN110268015A (fr) |
BR (1) | BR112019013481A2 (fr) |
FR (1) | FR3062446B1 (fr) |
WO (1) | WO2018142079A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111022779A (zh) * | 2019-12-25 | 2020-04-17 | 天津鹏翎集团股份有限公司 | 塑料冷却液水管及其制备方法 |
WO2024044734A1 (fr) | 2022-08-26 | 2024-02-29 | Martinrea International US Inc. | Tube de gestion thermique en plastique multicouche tel que pour application automobile |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1522236A (en) | 1975-12-06 | 1978-08-23 | Kabel Metallwerke Ghh | Tubular structure for conveying fluids |
FR2797673A1 (fr) | 1999-08-19 | 2001-02-23 | Coutier Moulage Gen Ind | Canalisation pour circuit de refroidissement |
US20100055367A1 (en) * | 2008-08-29 | 2010-03-04 | Tyco Healthcare Group Lp | Multilayer Tube for Medical Use |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6451915B1 (en) * | 2000-12-29 | 2002-09-17 | Advanced Elastomer Systems, L.P. | Thermoplastic elastomers having improved processing and physical property balance |
ES2250736T3 (es) * | 2002-01-15 | 2006-04-16 | Advanced Elastomer Systems | Elastomeros termoplasticos y procedimiento para fabricarlos. |
AU2003281801A1 (en) * | 2002-05-31 | 2004-02-23 | Federal-Mogul Powertrain, Inc. | Monolayer foamed corrugated sleeve |
ATE449132T1 (de) * | 2003-09-17 | 2009-12-15 | Exxonmobil Chem Patents Inc | Verbesserte thermoplastische vulkanisate und herstellungsverfahren dafür |
EP2001674A1 (fr) * | 2006-03-31 | 2008-12-17 | DSMIP Assets B.V. | Article comprenant un substrat polymère et un revêtement polymère co-extrudé |
FR2918380B1 (fr) * | 2007-07-02 | 2009-09-04 | Arkema France | Melanges et compositions elastomeres thermoplastiques a proprietes ameliorees, procede de fabrication des compositions et applications |
CN101260954A (zh) | 2007-08-10 | 2008-09-10 | 天津鹏翎胶管股份有限公司 | 三元乙丙/聚丙烯热塑性动态硫化橡胶软管及制备方法 |
US8709608B2 (en) * | 2008-01-24 | 2014-04-29 | Exxonmobil Chemical Patents Inc. | Elastic polypropylene-based film compositions |
EP2254737B1 (fr) * | 2008-03-14 | 2014-04-23 | Dow Global Technologies LLC | Procédé de fabrication d'un objet polymère |
US8877867B2 (en) * | 2008-11-06 | 2014-11-04 | Exxonmobil Chemical Patents Inc. | Process for forming thermoplastic vulcanizates and extruded articles therefrom |
DE102009012311A1 (de) * | 2009-03-09 | 2010-09-16 | Veritas Ag | Kraftstoffleitung |
CN105367913A (zh) * | 2015-11-18 | 2016-03-02 | 安徽雄亚塑胶科技有限公司 | 汽车波纹管料用tpv及其制备方法 |
-
2017
- 2017-02-02 FR FR1750869A patent/FR3062446B1/fr active Active
-
2018
- 2018-02-01 WO PCT/FR2018/050242 patent/WO2018142079A1/fr active Application Filing
- 2018-02-01 US US16/480,099 patent/US11092263B2/en active Active
- 2018-02-01 CN CN201880008280.7A patent/CN110268015A/zh active Pending
- 2018-02-01 BR BR112019013481-6A patent/BR112019013481A2/pt not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1522236A (en) | 1975-12-06 | 1978-08-23 | Kabel Metallwerke Ghh | Tubular structure for conveying fluids |
FR2797673A1 (fr) | 1999-08-19 | 2001-02-23 | Coutier Moulage Gen Ind | Canalisation pour circuit de refroidissement |
US20100055367A1 (en) * | 2008-08-29 | 2010-03-04 | Tyco Healthcare Group Lp | Multilayer Tube for Medical Use |
Also Published As
Publication number | Publication date |
---|---|
FR3062446B1 (fr) | 2020-07-31 |
BR112019013481A2 (pt) | 2020-02-27 |
US20190376629A1 (en) | 2019-12-12 |
CN110268015A (zh) | 2019-09-20 |
FR3062446A1 (fr) | 2018-08-03 |
US11092263B2 (en) | 2021-08-17 |
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