DK201070481A - Method of manufacturing a flexible tubular structure - Google Patents

Method of manufacturing a flexible tubular structure Download PDF

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Publication number
DK201070481A
DK201070481A DKPA201070481A DKPA201070481A DK201070481A DK 201070481 A DK201070481 A DK 201070481A DK PA201070481 A DKPA201070481 A DK PA201070481A DK PA201070481 A DKPA201070481 A DK PA201070481A DK 201070481 A DK201070481 A DK 201070481A
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DK
Denmark
Prior art keywords
polymer
thermoplastic elastomer
tubular structure
flexible tubular
ethylene
Prior art date
Application number
DKPA201070481A
Inventor
Coutarel Alain
Demanze Frederic
Hardy Jean
Original Assignee
Technip France
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Application filed by Technip France filed Critical Technip France
Publication of DK201070481A publication Critical patent/DK201070481A/en
Application granted granted Critical
Publication of DK178345B1 publication Critical patent/DK178345B1/en

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Classifications

    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • 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
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
    • F16L11/083—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire three or more layers
    • 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
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a flexible tubular pipe (10) intended for offshore oil produotion and to its method of manufaoture, said pipe oomprising an impermeable internal duot and at least one sheet (20) made of a thermoplastio elastomer polymer of defined thiokness around said internal duot (18) Acoording to the invention said thermoplastio elastomer polymer oomprises a polypropylene-based thermoplastio polymer and an elastomer based on an ethylene-propylene-diene terpolymer and it further inoludes a oompatibilizer for inoreasing the misoibility between said polypropylene-based thermoplastio polymer and said elastomer based on an ethylene-propylene-diene terpolymer.

Claims (16)

1. A method of manufacturing a flexible tubular structure (10) intended for offshore oil production, said method being of the type according to which: - an impermeable internal pipe (12, 14, 16, 18) is provided; - a thermoplastic elastomer polymer is provided; - a softened layer (33) of said thermoplastic elastomer polymer is formed by hot extrusion around said impermeable internal pipe (12, 14, 16, 18) ; - said softened layer (33) is cooled in order to obtain at least one polymeric sheath (20) with a determined thickness around said impermeable internal pipe (12, 14, 16, 18); characterized in that said thermoplastic elastomer polymer comprises a thermoplastic polymer based on polypropylene (PP) and an elastomer based on a terpolymer of ethylene-propylene-diene monomers (EPDM), and in that a compatibilizing agent is furthermore provided for mixing together said thermoplastic elastomer polymer and said compatibilizing agent before said hot extrusion, so as to increase the miscibility of said thermoplastic polymer based on polypropylene and said elastomer based on a terpolymer of ethylene-propylene-diene monomers (EPDM) during the extrusion, by means of which the elongation at break of said polymeric sheath (20) is increased.
2. The method as claimed in claim 1, characterized in that a polymer selected from polymers based on polyolefin or styrene-ethylene-butadiene-styrene (SEBS) is provided as the compatibilizing agent.
3. The method as claimed in claim 1 or 2, characterized in that a nucleating agent is furthermore provided, and in that said nucleating agent, said compatibilizing agent, said thermoplastic polymer based on polypropylene and said elastomer based on a terpolymer of ethylene-propylene-diene monomers are mixed together before said hot extrusion.
4. The method as claimed in claim 3, characterized in that a nucleating agent comprising a phosphate salt and/or a dicarboxylate salt is provided.
5. The method as claimed in any one of claims 1 to 4, characterized in that a thermoplastic elastomer polymer comprising between 40% and 70% by weight of said thermoplastic polymer based on polypropylene, between 10% and 20% by weight of said elastomer based on a terpolymer of ethylene-propylene-diene, and between 1% and 20% by weight of said compatibilizing agent, is provided.
6. The method as claimed in claims 3 or 4 and 5, characterized in that a thermoplastic elastomer polymer furthermore comprising between 0.1% and 1% by weight of nucleating agent is provided.
7. The method as claimed in any one of claims 1 to 6, characterized in that said thermoplastic elastomer polymer is obtained according to a dynamic vulcanization method.
8. The method as claimed in any one of claims 1 to 7, characterized in that a softened layer of said thermoplastic elastomer polymer is formed by hot extrusion around said impermeable internal pipe (18) so as to obtain a polymeric sheath with a thickness of more than 10 mm around said impermeable internal pipe (18) .
9. A flexible tubular structure (10) intended for offshore oil production, said flexible tubular structure comprising an impermeable internal pipe (12, 14, 16, 18) and at least one polymeric sheath (20) with a determined thickness around said impermeable internal pipe (12, 14, 16, 18), said sheath (20) being obtained by hot extruding a softened layer (33) of said thermoplastic elastomer polymer around said impermeable internal pipe (12, 14, 16, 18) and by cooling said softened layer (33); characterized in that said thermoplastic elastomer polymer comprises a thermoplastic polymer based on polypropylene and an elastomer based on a terpolymer of ethylene-propylene-diene monomers, and in that it furthermore comprises a compatibilizing agent for mixing together said thermoplastic elastomer polymer and said compatibilizing agent before said hot extrusion, so as to increase the miscibility of said thermoplastic polymer based on polypropylene and said elastomer based on a terpolymer of ethylene-propylene-diene monomers during the extrusion, by means of which the elongation at break of said sheath (20) is increased.
10. The flexible tubular structure as claimed in claim 9, characterized in that said compatibilizing agent is a polymer selected from the group of polymers comprising polymers based on polyolefin or styrene-ethylene-butadiene-styrene (SEBS), or a mixture of these polymers.
11. The flexible tubular structure as claimed in claim 9 or 10, characterized in that said thermoplastic elastomer polymer comprises a nucleating agent intended to induce a homogeneous distribution of crystallites over said determined thickness.
12. The flexible tubular structure as claimed in claim 11, characterized in that said nucleating agent comprises a phosphate salt and/or a dicarboxylate salt.
13. The flexible tubular structure as claimed in any one of claims 9 to 12, characterized in that said thermoplastic elastomer polymer comprises between 40% and 7 0% by weight of said thermoplastic polymer based on polypropylene, between 10% and 20% by weight of said elastomer based on a terpolymer of ethylene-propylene-diene monomers, and between 1% and 2 0% by weight of said compatibilizing agent.
14. The flexible tubular structure as claimed in claims 11 or 12 and 13, characterized in that said thermoplastic elastomer polymer furthermore comprises between 0.1% and 1% by weight of nucleating agent.
15. The flexible tubular structure as claimed in any one of claims 9 to 14, characterized in that said polymeric sheath (20) has a thickness of more than 10 mm around said impermeable internal pipe (12, 14, 16, 18) .
16. The flexible tubular structure as claimed in any one of claims 9 to 15, characterized in that said impermeable internal pipe (12, 14, 16, 18) comprises, from the inside to the outside of said pipe, an internal polymeric sealing sheath (12) and reinforcing filaments wound around said internal polymeric sealing sheath in order to form at least one reinforcing layer (14, 16, 18) .
DK201070481A 2008-05-13 2010-11-11 A flexible tubular structure and a method of manufacturing a flexible tubular structure DK178345B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0802569 2008-05-13
FR0802569A FR2931099B1 (en) 2008-05-13 2008-05-13 PROCESS FOR PRODUCING A FLEXIBLE TUBULAR STRUCTURE
FR2009000552 2009-05-13
PCT/FR2009/000552 WO2009141538A2 (en) 2008-05-13 2009-05-13 Method of manufacturing a flexible tubular structure

Publications (2)

Publication Number Publication Date
DK201070481A true DK201070481A (en) 2010-11-11
DK178345B1 DK178345B1 (en) 2015-12-21

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DK201070481A DK178345B1 (en) 2008-05-13 2010-11-11 A flexible tubular structure and a method of manufacturing a flexible tubular structure

Country Status (8)

Country Link
AU (1) AU2009248601B2 (en)
BR (1) BRPI0912199A2 (en)
DK (1) DK178345B1 (en)
FR (2) FR2931099B1 (en)
GB (1) GB2473357B (en)
MY (1) MY150383A (en)
NO (1) NO342067B1 (en)
WO (1) WO2009141538A2 (en)

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FR2957293B1 (en) * 2010-03-09 2012-03-09 Technip France EXTRUSION SYSTEM FOR A PLASTIC SHEATH
EP3371502B1 (en) 2015-11-03 2020-09-02 National Oilwell Varco Denmark I/S An unbonded flexible pipe
FR3068104B1 (en) 2017-06-22 2019-07-19 Technip France INSTALLATION FOR MANUFACTURING A REINFORCING STRUCTURE OF A FLEXIBLE CONDUIT, ASSOCIATED METHOD AND SYSTEM COMPRISING SAID INSTALLATION
US11725098B2 (en) 2017-12-18 2023-08-15 Celanese International Corporation Thermoplastic vulcanizate conduits for transporting hydrocarbon fluids
CN113166504B (en) * 2018-09-24 2024-02-06 埃克森美孚化学专利公司 Thermoplastic blends and composites for flexible pipe

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WO2009141538A3 (en) 2010-01-14
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AU2009248601B2 (en) 2013-08-22
FR2931099B1 (en) 2010-05-21
WO2009141538A2 (en) 2009-11-26
FR2931098A1 (en) 2009-11-20
BRPI0912199A2 (en) 2015-10-06
GB201018411D0 (en) 2010-12-15
FR2931098B1 (en) 2010-08-20
NO20101538A1 (en) 2011-01-27
GB2473357B (en) 2012-08-15
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DK178345B1 (en) 2015-12-21
AU2009248601A1 (en) 2009-11-26

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