JPH07276523A - Pvf3-made flexible sheath and application thereof to flexible metallic tube - Google Patents

Pvf3-made flexible sheath and application thereof to flexible metallic tube

Info

Publication number
JPH07276523A
JPH07276523A JP6313351A JP31335194A JPH07276523A JP H07276523 A JPH07276523 A JP H07276523A JP 6313351 A JP6313351 A JP 6313351A JP 31335194 A JP31335194 A JP 31335194A JP H07276523 A JPH07276523 A JP H07276523A
Authority
JP
Japan
Prior art keywords
sheath
flexible
units
pvdf
pvf3
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6313351A
Other languages
Japanese (ja)
Other versions
JP2803584B2 (en
Inventor
Albert Strassel
アルベール ストラッセル
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Elf Atochem SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elf Atochem SA filed Critical Elf Atochem SA
Publication of JPH07276523A publication Critical patent/JPH07276523A/en
Application granted granted Critical
Publication of JP2803584B2 publication Critical patent/JP2803584B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/14—PVF, i.e. polyvinyl fluoride

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Insulated Conductors (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

PURPOSE: To apply a temperature considerably higher than that of a PVDF sheath with excellent flexibility by using a polymer containing trifluoroethylene units as a base material in a flexible metal pipe comprising an internal flexible steel pipe, a flexible sheath, and a metal exterior material. CONSTITUTION: A flexible sheath obtains a service temperature higher than that of a PVDF sheath by using a polymer containing trifluoroethylene units and excellent flexibility. The polymer may contain, besides the trifluoroethylene units, chlorotrifluoroethylene units, tetrafluoroethylene units, hexafluoropropene units, vinylidene fluoride units, or ethylene units. A flexible steel pipe is obtained by being coated with the flexible sheath by an extrusion method.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、PVF3 製のたわみシー
ス及びたわみ金属管へのその適用に関する。FIELD OF THE INVENTION The present invention relates to a flexible sheath made of PVF 3 and its application to flexible metal tubes.

【０００２】[0002]

【従来の技術】海洋油及びガスの採掘には、通常、たわ
み管が使用されている。これらのたわみ管は、内部のた
わみ鋼管と、油及びガスの漏れ防止のための機能を有す
るプラスチックシースと、金属外装とからなる。このよ
うなたわみ管は、例えば、ヨーロッパ特許EP 166,385に
記載されている。BACKGROUND OF THE INVENTION Flexible pipes are commonly used for mining marine oil and gas. These flexible pipes are composed of an internal flexible steel pipe, a plastic sheath having a function of preventing leakage of oil and gas, and a metal sheath. Such flexible tubes are described, for example, in European Patent EP 166,385.

【０００３】流体の採掘の温度が80〜100 ℃を超えない
場合には、ポリアミドが漏れ防止の熱可塑性樹脂シース
として使用される。Polyamides are used as leak-proof thermoplastic sheaths when the fluid mining temperature does not exceed 80-100 ° C.

【０００４】高温、例えば、 130℃又は140 ℃までの温
度においては、ポリ（フッ化ビニリデン）が使用され
る。しかしながら、かかるポリマーは半結晶質で、高い
剛性を有するので、そのポリマーを使用すると、時々、
きわめて低温において、内部又は外部可塑化に頼ること
なしにコイル状に巻いたりコイル状のものをほどいたり
して意図する構造にすることはできない。At high temperatures, for example temperatures up to 130 ° C. or 140 ° C., poly (vinylidene fluoride) is used. However, because such polymers are semi-crystalline and have high rigidity, the use of such polymers sometimes results in
It is not possible to coil or unwind the coil at the extremely low temperatures without resorting to internal or external plasticization to the intended structure.

【０００５】内部可塑化の一例が、上記の特許EP 166,3
85に挙げられている：フッ化ビニリデンを、フッ素化モ
ノマーで共重合する。したがって、そのシースのたわみ
性は増大するが、その使用温度は一般的に低くなり、し
かもそのガスの透過性が増大して突然の減圧による破裂
に対する感応性が（ホモポリマーに対して）高まるとい
うことが観察されるので、そのシースを使用すると、高
い温度及び操作圧力に対する危険が生じる。An example of internal plasticization is described in the above mentioned patent EP 166,3.
Listed in 85: Vinylidene fluoride is copolymerized with fluorinated monomers. Therefore, while the flexibility of the sheath is increased, its operating temperature is generally lower, and its gas permeability is increased, making it more sensitive (relative to homopolymers) to rupture due to sudden depressurization. It has been observed that the use of the sheath poses a risk to high temperatures and operating pressures.

【０００６】外部可塑剤の使用については、フランスの
特許 2,560,884、2,592,655 及び 2,618,791に言及され
ている。可塑剤の中にはホモポリマーであるPVDFを柔軟
にすることによってたわみ管の取り扱い中のそのPVDFの
使用を可能にするものもある。しかしながら、操作中、
一般的にPVDFに非常に適合する可塑剤が減少することに
よって、シースがその本来の剛性をゆっくりと回復する
ということが観察される。剛性が増大するだけでなく、
可塑剤が減少し、しかもシースの収縮が妨げられる傾向
にあることにより、内部応力が発生する結果、脆化も引
き起こされる。The use of external plasticizers is mentioned in French patents 2,560,884, 2,592,655 and 2,618,791. Some plasticizers also soften the homopolymer PVDF, allowing its use during flexible tube handling. However, during operation,
It is observed that the sheath slowly regains its original stiffness by reducing the plasticizer, which is generally very compatible with PVDF. Not only the rigidity increases,
Brittleness is also the result of internal stresses due to the reduced plasticizer and the tendency to prevent shrinkage of the sheath.

【０００７】[0007]

【発明が解決しようとする課題】本発明の目的は、上記
のようなPVDFの内部又は外部可塑化による不都合がな
い、たわみ性に優れたシース、並びに該シースで被覆さ
れた金属管及びケーブルを提供することにある。DISCLOSURE OF THE INVENTION An object of the present invention is to provide a sheath having excellent flexibility, which is free from the above-mentioned inconvenience due to plasticization of PVDF inside or outside, and a metal tube and a cable covered with the sheath. To provide.

【０００８】[0008]

【課題を解決するための手段】必要とされるPVDFの内部
又は外部可塑化によるこれら全ての不都合は、トリフル
オロエチレン単位を含むポリマーの使用により克服され
ることがわかった。出願人は、トリフルオロエチレン単
位を含むポリマーを使用することによって特にたわみや
すいシース（又は管）を製造することができるというこ
とを発見した。It has been found that all these disadvantages due to the required internal or external plasticization of PVDF are overcome by the use of polymers containing trifluoroethylene units. Applicants have discovered that a particularly flexible sheath (or tube) can be produced by using a polymer containing trifluoroethylene units.

【０００９】したがって、PVDFから生み出される使用温
度よりもずっと高い使用温度を有するシースが得られ
る。さらに、そのシースはきわめてたわみ性に優れる。Thus, a sheath having a service temperature much higher than that produced by PVDF is obtained. Furthermore, the sheath is extremely flexible.

【００１０】また、トリフルオロエチレン（VF3）の他
に、本発明のシースのポリマーは、クロロトリフルオロ
エチレン、テトラフルオロエチレン、ヘキサフルオロプ
ロペン、フッ化ビニリデン、又はエチレン単位の残基も
含んでいてもよい。In addition to trifluoroethylene (VF 3 ), the sheath polymer of the present invention also contains residues of chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropene, vinylidene fluoride, or ethylene units. You may stay.

【００１１】充填剤、顔料、又はたとえ少量のエステル
又はスルホンアミド形の可塑剤を添加しても本発明の範
囲から逸脱することはない。It does not depart from the scope of the invention to add fillers, pigments or even small amounts of plasticizers in the ester or sulfonamide form.

【００１２】また、本発明は、本発明によるシースで被
覆されたたわみ金属管に関する。The invention also relates to a flexible metal tube covered with the sheath according to the invention.

【００１３】得られるたわみ管は、特に、液体状又は気
体状の炭化水素を高温で輸送するのに有用である。さら
に、かかるたわみ管は、ゴム、金属、編布 (textile cl
oth)のような保護層で被覆されていてもよい。The resulting flexible tube is particularly useful for transporting liquid or gaseous hydrocarbons at elevated temperatures. In addition, such flexible tubes can be made of rubber, metal or knitted fabric (textile cl
It may be covered with a protective layer such as oth).

【００１４】ガスの輸送のために、シースのポリマーは
実質的にトリフルオロエチレンのホモポリマーであるの
が好ましい。For gas transport, the sheath polymer is preferably substantially a homopolymer of trifluoroethylene.

【００１５】また、本発明は、本発明のシースで被覆さ
れたケーブルに関する。The present invention also relates to a cable covered with the sheath of the present invention.

【００１６】ケーブル又はたわみ管はいずれにせよ、押
出法によってこのシースで被覆され得る。The cable or flexible tube can in any case be covered with this sheath by an extrusion method.

【００１７】ケーブルは、金属線、又はストランドもし
くは金属ケーブルを形成する多数のストランドであり得
る。The cable can be a metal wire or a number of strands forming a strand or metal cable.

【００１８】[0018]

【実施例】接合を可能にするためのくぼみ及び割れ目が
その間に存在するターンからなる直径32mmのたわみ鋼管
の周囲に、厚さ５mmの熱可塑性樹脂シースを押し出し成
形した。EXAMPLE A thermoplastic resin sheath having a thickness of 5 mm was extruded and molded around a flexible steel pipe having a diameter of 32 mm, which was composed of turns having recesses and crevices to enable joining.

【００１９】巻きつけたシースを構成する種々の材料の
能力を比較するために、下記の手順が利用できる：シー
ズされた管を二つの固定した支持体の上に置く。半径75
mmの曲げ車輪を用いて、管を支持している二つの支持体
から等距離の地点に圧力をかける。シーズされた管を変
形し、管に車輪の曲率半径をもたらすのに必要な圧力を
車輪にかける。車輪のくぼみ深さは、たわみ管の変形能
力を示す。最大深さは 170mmである：この最大深さは、
シース管が車輪に沿って完全に輪状になったことに相当
する。シース管が完全に輪状になる前に破壊が生じる場
合、その深さを記録する。深さが大きい程、たわみ管の
曲げ能力は大きい。To compare the abilities of the various materials that make up the wrapped sheath, the following procedure is available: Place the sheathed tube on two fixed supports. Radius 75
Bending wheels of mm are used to apply pressure at points equidistant from the two supports supporting the tube. The wheels are subjected to the pressure necessary to deform the sheathed tube and bring the tube the radius of curvature of the wheel. The wheel recess depth indicates the deformability of the flexible tube. The maximum depth is 170 mm: this maximum depth is
This corresponds to the sheath tube becoming completely annular along the wheel. If rupture occurs before the sheath tube is completely annular, record the depth. The greater the depth, the greater the bending capacity of the flexible tube.

【００２０】さらに、種々の温度で試験を行った。実施例１ In addition, tests were conducted at various temperatures. Example 1

【００２１】[0021]

【表１】 [Table 1]

【００２２】シースＩ ： VF2 ホモポリマー −Elf Atochem 社製のフォラフロン1000 (Foraflon 100
0) シースII ： VF2 ホモポリマー ＋N-ブチルベンゼンスルホンアミドを重量基準で 7.5％ シースIII ： VF2 及びヘキサフルオロプロペンのモル
比95/5の共重合体 シースIV ： VF3 ホモポリマーSheath I: VF 2 Homopolymer-Foraflon 100 (Foraflon 100 manufactured by Elf Atochem)
0) Sheath II: VF 2 homopolymer + 7.5% by weight of N-butylbenzenesulfonamide Sheath III: Copolymer of VF 2 and hexafluoropropene in a molar ratio of 95/5 Sheath IV: VF 3 homopolymer

【００２３】実施例２ ４種のシースたわみ管に 150℃で３ヵ月間熱エージング
を実施した。次に、上記のような試験を行った。 Example 2 Four types of flexible sheath tubes were subjected to heat aging at 150 ° C. for 3 months. Next, the test as described above was performed.

【００２４】[0024]

【表２】 [Table 2]

【００２５】実施例３ ４種のシースたわみ管に 180℃で３ヵ月間熱エージング
を実施した。次に、上記のような試験を行った。 Example 3 Four kinds of flexible sheath tubes were subjected to heat aging at 180 ° C. for 3 months. Next, the test as described above was performed.

【００２６】[0026]

【表３】 [Table 3]

【００２７】[0027]

【発明の効果】本発明のシースは、たわみ性に優れてお
り、PVDF製のシースよりもかなり高い温度で使用するこ
とができる。また、かかるシースで被覆された本発明の
たわみ金属管は、例えば、海洋たわみ管として利用する
ことができる。The sheath of the present invention has excellent flexibility and can be used at a temperature considerably higher than that of PVDF sheath. Further, the flexible metal pipe of the present invention covered with such a sheath can be used as, for example, a marine flexible pipe.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｂ 7/18 Ｈ // Ｂ２９Ｋ 27:12 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location H01B 7/18 H // B29K 27:12

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 トリフルオロエチレン単位を含むポリマ
ーを基材とするたわみシース。1. A flexible sheath based on a polymer containing trifluoroethylene units. 【請求項２】 ポリマーが、さらに、クロロトリフルオ
ロエチレン、テトラフルオロエチレン、ヘキサフルオロ
プロペン、フッ化ビニリデン、又はエチレン単位の残基
を含むことを特徴とする、請求項１記載の製品。2. Article according to claim 1, characterized in that the polymer further comprises residues of chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropene, vinylidene fluoride, or ethylene units. 【請求項３】 請求項１又は２記載のシースで被覆され
たたわみ金属管。3. A flexible metal tube covered with the sheath according to claim 1. 【請求項４】 請求項１又は２記載のシースで被覆され
たケーブル。4. A cable covered with the sheath according to claim 1. 【請求項５】 シースが、さらに充填剤、顔料、又は可
塑剤を含む、請求項３又は４記載の製品。5. Article according to claim 3 or 4, wherein the sheath further comprises a filler, pigment or plasticizer.
JP6313351A 1993-12-17 1994-12-16 Flexible sheath made of PVF3 and its application to flexible metal tubes Expired - Lifetime JP2803584B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315235 1993-12-17
FR9315235A FR2714140B1 (en) 1993-12-17 1993-12-17 Flexible sheath in PVF3 and its application to metallic hoses.

Publications (2)

Publication Number Publication Date
JPH07276523A true JPH07276523A (en) 1995-10-24
JP2803584B2 JP2803584B2 (en) 1998-09-24

Family

ID=9454071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6313351A Expired - Lifetime JP2803584B2 (en) 1993-12-17 1994-12-16 Flexible sheath made of PVF3 and its application to flexible metal tubes

Country Status (15)

Country Link
JP (1) JP2803584B2 (en)
KR (1) KR950018074A (en)
CN (1) CN1114932A (en)
AU (1) AU688413B2 (en)
BE (1) BE1009248A3 (en)
BR (1) BR9405112A (en)
CA (1) CA2138355A1 (en)
DE (1) DE4445083A1 (en)
DK (1) DK143794A (en)
FI (1) FI945931A (en)
FR (1) FR2714140B1 (en)
GB (1) GB2284819B (en)
IT (1) IT1271733B (en)
NO (1) NO944863L (en)
SE (1) SE9404251L (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2010110129A1 (en) 2009-03-23 2010-09-30 ダイキン工業株式会社 Fluororesin and riser pipe
WO2018207446A1 (en) 2017-05-10 2018-11-15 ダイキン工業株式会社 Sheet, laminate, pipe, riser tube, and flowline

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Publication number Priority date Publication date Assignee Title
WO2010110129A1 (en) 2009-03-23 2010-09-30 ダイキン工業株式会社 Fluororesin and riser pipe
WO2018207446A1 (en) 2017-05-10 2018-11-15 ダイキン工業株式会社 Sheet, laminate, pipe, riser tube, and flowline

Also Published As

Publication number Publication date
AU8150194A (en) 1995-06-22
SE9404251D0 (en) 1994-12-07
NO944863L (en) 1995-06-19
SE9404251A0 (en) 1995-06-18
JP2803584B2 (en) 1998-09-24
CN1114932A (en) 1996-01-17
FI945931A0 (en) 1994-12-16
FI945931A (en) 1995-06-18
DE4445083A1 (en) 1995-06-22
SE9404251L (en) 1995-06-18
IT1271733B (en) 1997-06-04
NO944863D0 (en) 1994-12-15
GB2284819A (en) 1995-06-21
ITMI942500A0 (en) 1994-12-13
BE1009248A3 (en) 1997-01-07
GB2284819B (en) 1997-11-19
AU688413B2 (en) 1998-03-12
FR2714140B1 (en) 1996-01-19
BR9405112A (en) 1995-08-08
GB9425010D0 (en) 1995-02-08
ITMI942500A1 (en) 1996-06-13
DK143794A (en) 1995-06-18
CA2138355A1 (en) 1995-06-18
FR2714140A1 (en) 1995-06-23
KR950018074A (en) 1995-07-22

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