JP2005163830A - Tube, and method for manufacturing it - Google Patents

Tube, and method for manufacturing it Download PDF

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JP2005163830A
JP2005163830A JP2003400234A JP2003400234A JP2005163830A JP 2005163830 A JP2005163830 A JP 2005163830A JP 2003400234 A JP2003400234 A JP 2003400234A JP 2003400234 A JP2003400234 A JP 2003400234A JP 2005163830 A JP2005163830 A JP 2005163830A
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resin
gas barrier
pipe
barrier layer
gas
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Hitoshi Ishida
均 石田
Yuji Asai
裕治 浅井
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NAGOYA METALLICON KOGYO KK
Daido Steel Co Ltd
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NAGOYA METALLICON KOGYO KK
Daido Steel Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent penetration of fluorine gas or hydrogen fluoride gas outward to improve durability and prevent deterioration of peripheral environments, and manufacture at low cost. <P>SOLUTION: The outer circumference of a resin tube 12 comprising polyvinyl chloride resin is coated with a gas barrier layer 14 comprising barrier resin having gas barrier performance to fluorine gas and hydrogen fluoride gas. The outer circumference of the gas barrier layer 14 is coated with a reinforcement layer 16 comprising connecting resin impregnated in an inorganic fiber sheet. The gas barrier layer 14 is produced by impregnating and hardening bisphenol-based vinyl ester resin in a fiber sheet wrapped around the resin tube 12, or an unwoven fabric comprising polyester, for example. The reinforcement layer 16 is produced by impregnating and hardening bisphenol-based vinyl ester resin in a cloth or mat using carbon fibers as the inorganic fiber sheet wrapped around the gas barrier layer 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、フッ化水素酸を含む液体用の配管およびその製造方法に関するものである。   The present invention relates to a pipe for liquid containing hydrofluoric acid and a method for producing the same.

ステンレス鋼、高合金鋼、チタン等からなる製品を熱間加工により製造した場合、その表面にスケールが生成する。このスケールを除去するために、フッ化水素酸に硝酸や塩酸等を混合した混酸液中に製品を浸漬する酸洗処理が実施されている。この酸洗処理に用いられる酸洗設備における混酸液の供給配管としては、フッ化水素酸に対して耐性のあるポリ塩化ビニル樹脂からなる配管(以後、ＰＶＣ配管と称す)あるいはＰＶＣ配管の外周に、ガラス繊維強化プラスチック(ＦＲＰ)を被覆した配管(以後、Ｆ−ＰＶＣ配管と称す)が用いられている。   When a product made of stainless steel, high alloy steel, titanium or the like is manufactured by hot working, a scale is generated on the surface. In order to remove this scale, pickling is performed in which the product is immersed in a mixed acid solution in which nitric acid or hydrochloric acid is mixed with hydrofluoric acid. The mixed acid solution supply pipe in the pickling equipment used for this pickling treatment is a pipe made of polyvinyl chloride resin resistant to hydrofluoric acid (hereinafter referred to as PVC pipe) or the outer periphery of the PVC pipe. Pipes coated with glass fiber reinforced plastic (FRP) (hereinafter referred to as F-PVC pipes) are used.

また、Ｆ−ＰＶＣ配管の外周に、更にフッ素系樹脂であるポリフッ化ビニリデン樹脂からなる保護層を被覆することで、耐候性を強化した配管(以後、ＰＶＤＦ配管と称す)を用いることもある(例えば、特許文献１参照)。
特開平５−８７２７２号公報 In addition, a pipe (hereinafter referred to as a PVDF pipe) whose weather resistance is enhanced by covering the outer periphery of the F-PVC pipe with a protective layer made of polyvinylidene fluoride resin, which is a fluorine-based resin, may be used (hereinafter referred to as PVDF pipe). For example, see Patent Document 1).
JP-A-5-87272

ここで、ポリ塩化ビニル樹脂は、フッ化水素酸に対しての耐食性は必要充分であり、該樹脂が腐食してＰＶＣ配管から混酸液(フッ化水素酸)が漏れるおそれはない。しかるに、ポリ塩化ビニル樹脂は、管内で発生したフッ素ガスやフッ化水素ガスに対するガスバリア性は低く、該ガスが外部に漏れることで、周囲の装置を腐食したり周囲環境を悪化させる問題が指摘される。また、フッ素ガスやフッ化水素ガスは、前記ガラス繊維強化プラスチック中におけるガラス繊維を腐食させてしまい、配管の表層部に経時的に亀裂を生じて耐久性を低下させる問題もあった。   Here, the polyvinyl chloride resin has sufficient and sufficient corrosion resistance against hydrofluoric acid, and there is no fear that the resin corrodes and the mixed acid solution (hydrofluoric acid) leaks from the PVC pipe. However, polyvinyl chloride resin has a low gas barrier property against fluorine gas and hydrogen fluoride gas generated in the pipe, and it has been pointed out that the gas leaks to the outside and corrodes the surrounding equipment or deteriorates the surrounding environment. The Further, the fluorine gas or hydrogen fluoride gas corrodes the glass fiber in the glass fiber reinforced plastic, and there is a problem that the surface layer portion of the pipe is cracked with time and the durability is lowered.

なお、前記ＰＶＤＦ配管では、保護層がフッ素ガスやフッ化水素ガスにより腐食されることはないが、その内側に存在するガラス繊維強化プラスチックのガラス繊維が腐食されることには変わりなく、充分な耐久性の向上は望めなかった。また、保護層を構成するポリフッ化ビニリデン樹脂は、ポリ塩化ビニル樹脂に比較してフッ素ガスやフッ化水素ガスに対するガスバリア性は高いものの、完全に防止し得るものではなく、しかも極めて高価であるためにコストが嵩む難点も指摘される。   In the PVDF piping, the protective layer is not corroded by fluorine gas or hydrogen fluoride gas, but the glass fiber reinforced plastic glass fiber existing inside the protective layer is not corroded and sufficient. Durability improvement could not be expected. In addition, the polyvinylidene fluoride resin constituting the protective layer has a higher gas barrier property against fluorine gas and hydrogen fluoride gas than polyvinyl chloride resin, but it cannot be completely prevented and is extremely expensive. However, it is pointed out that the cost increases.

すなわち本発明は、前述した従来の技術に内在している前記課題に鑑み、これを好適に解決するべく提案されたものであって、フッ素ガスやフッ化水素ガスの外部透過を防ぎ、耐久性を高めると共に周囲環境の悪化を防止し、併せて低廉なコストで製造し得る配管およびその製造方法を提供することを目的とする。   That is, the present invention has been proposed in view of the above-mentioned problems inherent in the above-described conventional technology, and has been proposed to suitably solve this problem, preventing external permeation of fluorine gas or hydrogen fluoride gas, and durability. An object of the present invention is to provide a piping that can be manufactured at a low cost, and a manufacturing method thereof that can prevent the deterioration of the surrounding environment.

前記課題を克服し、所期の目的を好適に達成するため、本発明に係る配管は、
フッ化水素酸を含む液体用の配管であって、
ポリ塩化ビニル樹脂からなる樹脂管の外周が、ガスバリア性を有する樹脂からなるガスバリア層で被覆されると共に、該バリア層の外周が、無機質の繊維を樹脂で硬化させてなる補強層で被覆されていることを特徴とする。 In order to overcome the above-mentioned problems and achieve the desired purpose suitably, the piping according to the present invention is
A pipe for liquid containing hydrofluoric acid,
The outer periphery of the resin tube made of polyvinyl chloride resin is covered with a gas barrier layer made of a resin having gas barrier properties, and the outer periphery of the barrier layer is covered with a reinforcing layer formed by curing inorganic fibers with resin. It is characterized by being.

前記課題を克服し、所期の目的を好適に達成するため、本願の別の発明に係る配管の製造方法は、
フッ化水素酸を含む液体用の配管の製造方法であって、
ポリ塩化ビニル樹脂からなる樹脂管の外周に、繊維シートを巻き付けると共に該シートにガスバリア性を有するバリア性樹脂を含浸させてガスバリア層を形成し、
前記バリア性樹脂の硬化後、前記ガスバリア層の外周に、無機質の繊維シートを巻き付けると共に該シートに接続用樹脂を含浸させて補強層を形成することを特徴とする。 In order to overcome the above-mentioned problems and achieve the intended purpose suitably, a method for manufacturing a pipe according to another invention of the present application is as follows:
A method for manufacturing a pipe for liquid containing hydrofluoric acid,
A fiber sheet is wound around the outer periphery of a resin tube made of polyvinyl chloride resin, and a gas barrier layer is formed by impregnating the sheet with a barrier resin having gas barrier properties.
After the curing of the barrier resin, an inorganic fiber sheet is wound around the outer periphery of the gas barrier layer, and a reinforcing layer is formed by impregnating the sheet with a connecting resin.

本発明に係る配管およびその製造方法によれば、ポリ塩化ビニル樹脂からなる樹脂管をガスバリア層で被覆したことで、フッ素ガスやフッ化水素ガスの外部透過を防止し、周囲の装置が腐食されたり周囲環境が悪化するのを防ぐことができる。また、ガスバリア層を被覆する補強層がフッ素ガスやフッ化水素ガスにより腐食するのを防止できるから、耐久性を向上して使用寿命を延ばすことができる。更に、高価なポリフッ化ビニリデン樹脂を用いることなく耐久性を向上し得るので、材料費を低廉に抑えることができる。更にまた、補強層に無機質の繊維を用いたから、仮にガスバリア層にピンホール等があってフッ素ガスやフッ化水素ガスが漏れたとしても、補強層が腐食することはなく、耐久性の低下を来たすことはない。   According to the pipe and the manufacturing method thereof according to the present invention, the resin pipe made of polyvinyl chloride resin is coated with the gas barrier layer, thereby preventing the permeation of fluorine gas and hydrogen fluoride gas to the outside, and surrounding devices are corroded. Or the surrounding environment can be prevented from deteriorating. In addition, since the reinforcing layer covering the gas barrier layer can be prevented from being corroded by fluorine gas or hydrogen fluoride gas, the durability can be improved and the service life can be extended. Furthermore, since durability can be improved without using an expensive polyvinylidene fluoride resin, material costs can be kept low. Furthermore, since inorganic fibers are used for the reinforcing layer, even if there is a pinhole or the like in the gas barrier layer and fluorine gas or hydrogen fluoride gas leaks, the reinforcing layer will not corrode, resulting in a decrease in durability. Never come.

また本発明に係る配管の製造方法では、配管を現場で簡単に製造することができる。   Moreover, in the manufacturing method of piping which concerns on this invention, piping can be manufactured easily on-site.

次に、本発明に係る配管およびその製造方法につき、好適な実施例を挙げて、添付図面を参照しながら以下説明する。なお、実施例では、樹脂管として、管同士を接続するためのフランジを備えたフランジ管と直管とを接続した構造のものを挙げて説明するが、直管のみあるいは直管にチーズ管やＴ字管等を接続したものであってもよい。   Next, the piping according to the present invention and the manufacturing method thereof will be described below with reference to the accompanying drawings by way of preferred embodiments. In addition, in an Example, although the thing of the structure which connected the flange pipe provided with the flange for connecting pipes and a straight pipe as a resin pipe is mentioned and explained, only a straight pipe or a straight pipe is a cheese pipe, A T-tube or the like may be connected.

図１および図２に示す実施例に係る配管１０は、フッ化水素酸を含む混酸液(例えばフッ化水素酸が１０％以下)が直接流通する最内側の樹脂管１２の材料として、フッ化水素酸に対する耐食性を有するポリ塩化ビニル樹脂が用いられている。そして、この樹脂管１２の外周は、フッ素ガスおよびフッ化水素ガスに対してガスバリア性を有するバリア性樹脂からなる所定厚みのガスバリア層１４で被覆されている。更に、ガスバリア層１４の外周は、無機質の繊維シートに接続用樹脂を含浸させてなる所定厚みの補強層１６で被覆してある。なお、ガスバリア層１４および補強層１６の厚みは、夫々０.３〜０.５ｍｍとするのが好ましい。   The pipe 10 according to the embodiment shown in FIG. 1 and FIG. 2 is made of fluoride as a material of the innermost resin tube 12 through which a mixed acid solution containing hydrofluoric acid (for example, hydrofluoric acid is 10% or less) flows directly. A polyvinyl chloride resin having corrosion resistance to hydroacid is used. The outer periphery of the resin tube 12 is covered with a gas barrier layer 14 having a predetermined thickness made of a barrier resin having a gas barrier property against fluorine gas and hydrogen fluoride gas. Further, the outer periphery of the gas barrier layer 14 is covered with a reinforcing layer 16 having a predetermined thickness obtained by impregnating an inorganic fiber sheet with a connecting resin. The thicknesses of the gas barrier layer 14 and the reinforcing layer 16 are preferably 0.3 to 0.5 mm, respectively.

前記ガスバリア層１４は、前記樹脂管１２に巻き付けた繊維シート、例えばポリエステルからなる不織布に、バリア性樹脂としてのビスフェノール系ビニルエステル樹脂を含浸させて硬化することで構成される。また前記補強層１６は、無機質の繊維シートとしてのカーボン繊維を用いたクロスあるいはマットを、前記ガスバリア層１４に巻き付けると共に、該繊維シートに、接続用樹脂としてのビスフェノール系ビニルエステル樹脂を含浸させて硬化することで構成される。なお、クロスおよびマットは、カーボン繊維を編んだものであって、マットはクロスに比ベて肉厚に設定されている。   The gas barrier layer 14 is configured by impregnating a fiber sheet wound around the resin tube 12, for example, a nonwoven fabric made of polyester, with a bisphenol-based vinyl ester resin as a barrier resin and curing the sheet. The reinforcing layer 16 is formed by winding a cloth or a mat using carbon fibers as an inorganic fiber sheet around the gas barrier layer 14 and impregnating the fiber sheet with a bisphenol vinyl ester resin as a connection resin. Consists of curing. The cloth and the mat are knitted carbon fibers, and the mat is set to be thicker than the cloth.

前記バリア性樹脂は、前記ビスフェノール系ビニルエステル樹脂に限定されるものでなく、イソフタン酸系ポリエステル樹脂等であってもよいが、耐食性に最も優れているビスフェノール系ビニルエステル樹脂が好適である。なお、ガスバリア層１４を構成する繊維シートとしては、ポリエステルの不織布に限らず、ポリプロピレンの不織布等を用いることができる。また補強層１６に用いられる接続用樹脂としては、前記ビスフェノール系ビニルエステル樹脂に限定されるものでなく、不飽和ポリエステル樹脂、フェノール樹脂、エポキシ樹脂、シリコン樹脂等を用いることができるが、ビスフェノール系ビニルエステル樹脂を用いることでガスバリア性がより高まるので好適である。   The barrier resin is not limited to the bisphenol-based vinyl ester resin, and may be an isophthalic acid-based polyester resin or the like, but a bisphenol-based vinyl ester resin having the highest corrosion resistance is preferable. In addition, as a fiber sheet which comprises the gas barrier layer 14, not only a polyester nonwoven fabric but a polypropylene nonwoven fabric etc. can be used. Further, the connection resin used for the reinforcing layer 16 is not limited to the bisphenol-based vinyl ester resin, and an unsaturated polyester resin, a phenol resin, an epoxy resin, a silicon resin, or the like can be used. Use of a vinyl ester resin is preferable because gas barrier properties are further improved.

〔実施例の作用〕
次に、前述した実施例に係る配管の作用につき、製造工程を示す図３を参照して製造方法との関係で説明する。 (Effects of Example)
Next, the operation of the piping according to the above-described embodiment will be described in relation to the manufacturing method with reference to FIG. 3 showing the manufacturing process.

酸洗設備において、フッ化水素酸を含む混酸液の供給配管となるポリ塩化ビニル樹脂からなるフランジ管１８と直管２０とを嵌合接続した樹脂管１２においては、前記ガスバリア層１４および補強層１６で被覆するのに先立ち、両管１８,２０の接続部をポリ塩化ビニル樹脂で溶接すると共に、該溶接箇所の外周を樹脂パテの肉盛により平滑にする。また、樹脂管１２とガスバリア層１４との接着強度を高めるために、その外周面にサンドブラスト加工を施す、等の前処理を行なう。なお、サンドブラスト加工は、必要に応じて行なえばよく、省略することが可能である。   In the pickling facility, the gas barrier layer 14 and the reinforcing layer are formed in the resin pipe 12 in which the flange pipe 18 made of polyvinyl chloride resin and the straight pipe 20 are connected to each other as a supply pipe for a mixed acid solution containing hydrofluoric acid. Prior to coating with 16, the connecting portions of both pipes 18 and 20 are welded with polyvinyl chloride resin, and the outer periphery of the welded portion is smoothed by overlaying a resin putty. Further, in order to increase the adhesive strength between the resin tube 12 and the gas barrier layer 14, a pretreatment such as sandblasting is performed on the outer peripheral surface thereof. Sand blasting may be performed as necessary and can be omitted.

そして、樹脂管１２の外周面に接着用プライマーを塗布した後、ポリエステルの不織布を巻き付け、該不織布にガスバリア性樹脂としてのビスフェノール系ビニルエステル樹脂を塗布して含浸させる。また、１層目の不織布の上に、再びポリエステルの不織布を巻き付け、該不織布にビスフェノール系ビニルエステル樹脂を塗布して含浸する工程を行なうことで、２層の不織布からなるガスバリア層１４を形成する。   And after apply | coating the primer for adhesion to the outer peripheral surface of the resin pipe 12, the nonwoven fabric of polyester is wound, and the nonwoven fabric is apply | coated and impregnated with the bisphenol-type vinyl ester resin as gas barrier resin. Further, a polyester non-woven fabric is wound again on the first non-woven fabric, and a bisphenol-based vinyl ester resin is applied and impregnated on the non-woven fabric to form a gas barrier layer 14 composed of two layers of non-woven fabric. .

前記ガスバリア層１４の硬化後、カーボン繊維からなるカーボンクロスを該ガスバリア層１４の外周に巻き付け、該クロスに接続用樹脂としてのビスフェノール系ビニルエステル樹脂を塗布して含浸する。更に、その外周にカーボン繊維からなるカーボンマットを巻き付け、同じくビスフェノール系ビニルエステル樹脂を塗布して含浸することで、補強層１６を形成する。なお、フランジ管１８と直管２０との嵌合接続部は肉厚が約２倍であり、またフランジ管１８におけるフランジ部分の肉厚も大きいから、実施例では直管２０および直管２０とフランジ管１８との接続部分にのみ、前述したガスバリア層１４と補強層１６を施し、フランジ管１８のその他の外周にはカーボンマットからなる補強層のみを被覆する。   After the gas barrier layer 14 is cured, a carbon cloth made of carbon fibers is wound around the outer periphery of the gas barrier layer 14, and a bisphenol vinyl ester resin as a connecting resin is applied and impregnated on the cloth. Further, the reinforcing layer 16 is formed by winding a carbon mat made of carbon fiber around the outer periphery and applying and impregnating a bisphenol vinyl ester resin. In addition, since the thickness of the fitting connection part of the flange pipe 18 and the straight pipe 20 is about 2 times, and the thickness of the flange part in the flange pipe 18 is also large, in the Example, the straight pipe 20 and the straight pipe 20 The gas barrier layer 14 and the reinforcing layer 16 described above are applied only to the connection portion with the flange pipe 18, and the other outer periphery of the flange pipe 18 is covered only with the reinforcing layer made of carbon mat.

そして、前記補強層１６の硬化後、空気硬化剤入りのビスフェノール系ビニルエステル樹脂を仕上げ塗りすることで、配管１０の製造が完了する。   And after hardening of the said reinforcement layer 16, manufacture of the piping 10 is completed by finish-coating the bisphenol-type vinyl ester resin containing an air hardening | curing agent.

以上のように、ポリ塩化ビニル樹脂からなる樹脂管１２を、ガスバリア層１４で被覆したから、フッ素ガスやフッ化水素ガスが樹脂管１２を透過しても、前記ガスバリア層１４により外部への透過を防止することができ、周囲の装置が腐食したり周囲環境の悪化を防ぐことができる。またガスバリア層１４を更に補強層１６で被覆したので、配管１０の耐久性が向上する(従来のＰＶＤＦ配管と比較して約１.５〜２倍)。しかも、高価なポリフッ化ビニリデン樹脂を用いていないので、コストの上昇を抑制することができる。更に、実施例ではガスバリア層１４および補強層１６の何れにおいても、ガスバリア性を有するビスフェノール系ビニルエステル樹脂を用いているから、フッ素ガスやフッ化水素ガスの外部透過をより確実に防ぐことができる。   As described above, since the resin tube 12 made of polyvinyl chloride resin is coated with the gas barrier layer 14, even if fluorine gas or hydrogen fluoride gas permeates the resin tube 12, the gas barrier layer 14 permeates the outside. It is possible to prevent the surrounding devices from corroding and the surrounding environment from deteriorating. Further, since the gas barrier layer 14 is further covered with the reinforcing layer 16, the durability of the pipe 10 is improved (about 1.5 to 2 times that of the conventional PVDF pipe). In addition, since an expensive polyvinylidene fluoride resin is not used, an increase in cost can be suppressed. Furthermore, in the embodiment, since both the gas barrier layer 14 and the reinforcing layer 16 use a bisphenol-based vinyl ester resin having gas barrier properties, external permeation of fluorine gas or hydrogen fluoride gas can be prevented more reliably. .

なお、前述したようにフランジ管１８におけるカーボンマットのみからなる補強層で被覆されている部位においては、樹脂管１２の厚みが大きく、フッ素ガスやフッ化水素ガスが透過しても僅かであり、該補強層に用いるビスフェノール系ビニルエステル樹脂のガスバリア性により外部透過を防ぐことが可能である。   As described above, the portion of the flange pipe 18 covered with the reinforcing layer made of only the carbon mat has a large thickness of the resin pipe 12, and even if fluorine gas or hydrogen fluoride gas permeates, External permeation can be prevented by the gas barrier property of the bisphenol-based vinyl ester resin used for the reinforcing layer.

更に、当該配管１０は、樹脂管１２およびガスバリア層１４に、対応する繊維シートを巻き付けて、該シートに樹脂を含浸するだけで簡単に製造することができる。従って、現場での製造が容易で、配管設備の補修等にも簡単に対応することができる。   Further, the pipe 10 can be easily manufactured by simply winding a corresponding fiber sheet around the resin pipe 12 and the gas barrier layer 14 and impregnating the sheet with resin. Therefore, on-site manufacturing is easy and it is possible to easily cope with repairs of piping facilities.

なお、前記ガスバリア層および補強層は、実施例のように繊維シートを２層重ねたものに限らず、１層あるいは３層以上の任意の数とし得る。また、ガスバリア層と補強層の積層数を変えることもできる。更に、ガスバリア層および補強層を構成する繊維シートの形態は、実施例のものに限定されるものではなく、不織布、クロス、マット等の各種のものを任意に選択したり組合わせるようにしてもよい。   In addition, the gas barrier layer and the reinforcing layer are not limited to two layers of fiber sheets as in the embodiment, and may be any number of one layer or three or more layers. In addition, the number of gas barrier layers and reinforcing layers can be changed. Furthermore, the form of the fiber sheet constituting the gas barrier layer and the reinforcing layer is not limited to that of the example, and various kinds such as nonwoven fabric, cloth, mat, etc. may be arbitrarily selected or combined. Good.

実施例に係る配管の要部を示す説明図である。It is explanatory drawing which shows the principal part of piping which concerns on an Example. 図１のＩＩ−ＩＩ線断面図である。It is the II-II sectional view taken on the line of FIG. 実施例に係る配管の製造工程を示す工程図である。It is process drawing which shows the manufacturing process of piping which concerns on an Example.

符号の説明Explanation of symbols

１２ 樹脂管，１４ ガスバリア層，１６ 補強層
12 resin pipe, 14 gas barrier layer, 16 reinforcing layer

Claims (6)

フッ化水素酸を含む液体用の配管であって、
ポリ塩化ビニル樹脂からなる樹脂管(12)の外周が、ガスバリア性を有する樹脂からなるガスバリア層(14)で被覆されると共に、該バリア層(14)の外周が、無機質の繊維を樹脂で硬化させてなる補強層(16)で被覆されている
ことを特徴とする配管。 A pipe for liquid containing hydrofluoric acid,
The outer periphery of the resin tube (12) made of polyvinyl chloride resin is covered with a gas barrier layer (14) made of a resin having gas barrier properties, and the outer periphery of the barrier layer (14) hardens inorganic fibers with the resin. A pipe characterized by being covered with a reinforcing layer (16). 前記ガスバリア層(14)は、前記樹脂管(12)の外周に巻き付けた繊維シートにビスフェノール系ビニルエステル樹脂を含浸して構成される請求項１記載の配管。   The pipe according to claim 1, wherein the gas barrier layer (14) is configured by impregnating a bisphenol-based vinyl ester resin into a fiber sheet wound around an outer periphery of the resin pipe (12). 前記補強層(16)は、前記ガスバリア層(14)の外周に巻き付けたカーボン繊維に接続用樹脂を含浸して構成される請求項１または２記載の配管。   The piping according to claim 1 or 2, wherein the reinforcing layer (16) is configured by impregnating a carbon fiber wound around an outer periphery of the gas barrier layer (14) with a connecting resin. フッ化水素酸を含む液体用の配管の製造方法であって、
ポリ塩化ビニル樹脂からなる樹脂管(12)の外周に、繊維シートを巻き付けると共に該シートにガスバリア性を有するバリア性樹脂を含浸させてガスバリア層(14)を形成し、
前記バリア性樹脂の硬化後、前記ガスバリア層(14)の外周に、無機質の繊維シートを巻き付けると共に該シートに接続用樹脂を含浸させて補強層(16)を形成する
ことを特徴とする配管の製造方法。 A method for manufacturing a pipe for liquid containing hydrofluoric acid,
A fiber sheet is wound around the outer periphery of a resin pipe (12) made of polyvinyl chloride resin, and a gas barrier layer (14) is formed by impregnating the sheet with a barrier resin having gas barrier properties.
After the curing of the barrier resin, a reinforcing layer (16) is formed by winding an inorganic fiber sheet around the outer periphery of the gas barrier layer (14) and impregnating the sheet with a connecting resin. Production method. 前記ガスバリア層(14)および補強層(16)を形成するに際して各繊維シートに含浸させるバリア性樹脂および接続用樹脂は、ビスフェノール系ビニルエステル樹脂である請求項４記載の配管の製造方法。   The method for manufacturing a pipe according to claim 4, wherein the barrier resin and the connecting resin impregnated in each fiber sheet when forming the gas barrier layer (14) and the reinforcing layer (16) are bisphenol-based vinyl ester resins. 前記補強層(16)を構成する無機質の繊維シートは、カーボン繊維シートである請求項４または５記載の配管の製造方法。
The method for manufacturing a pipe according to claim 4 or 5, wherein the inorganic fiber sheet constituting the reinforcing layer (16) is a carbon fiber sheet.
JP2003400234A 2003-11-28 2003-11-28 Tube, and method for manufacturing it Pending JP2005163830A (en)

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JPH10196857A (en) * 1996-12-30 1998-07-31 Arisawa Mfg Co Ltd Pipe manufacture and pipe connecting method
JP2001335366A (en) * 2000-05-25 2001-12-04 Kobe Steel Ltd Glassy carbon tube precursor and manufacturing method for the same
JP2003227582A (en) * 2001-12-20 2003-08-15 Pipelife Nederland Bv Plastic pipe reinforced in permeation preventing property

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006297912A (en) * 2005-03-22 2006-11-02 Fuji Photo Film Co Ltd Solution film forming method
JP2009535237A (en) * 2006-04-27 2009-10-01 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー Polymer pipes and containers with high barrier layers
US11698161B2 (en) 2012-05-18 2023-07-11 Nelson Global Products, Inc. Breathable multi-component exhaust insulation system
US11806920B2 (en) 2012-09-28 2023-11-07 Nelson Global Products, Inc. Heat curable composite textile
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JP2020514098A (en) * 2016-11-18 2020-05-21 サプレックス，リミテッド・ライアビリティ・カンパニー Composite insulation system
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CN111140771B (en) * 2019-12-30 2020-10-27 清华大学 Active safety protection device and method for hydrogen pipeline

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