JPH11129363A - Fiber-reinforced plastic composite pipe - Google Patents
Fiber-reinforced plastic composite pipeInfo
- Publication number
- JPH11129363A JPH11129363A JP9301715A JP30171597A JPH11129363A JP H11129363 A JPH11129363 A JP H11129363A JP 9301715 A JP9301715 A JP 9301715A JP 30171597 A JP30171597 A JP 30171597A JP H11129363 A JPH11129363 A JP H11129363A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- layer
- peripheral surface
- resin
- plastic composite
- 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
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、低摩擦性又は低
摩擦・耐摩耗性を特徴とする繊維強化プラスチック複合
管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber-reinforced plastic composite pipe characterized by low friction or low friction and wear resistance.
【０００２】[0002]
【従来の技術】繊維強化プラスチック複合管は、一般に
図１４に示すように、樹脂モルタル層１の内周面又は外
周面に繊維強化樹脂（以下、「ＦＲＰ」とも称する。）
からなる層２を積層してなるものである。この繊維強化
プラスチック複合管の製造法は、円柱状金型上にＦＲＰ
層２、樹脂モルタル層１及びＦＲＰ層２を順番に巻き付
けながらオーブンで熱硬化させてなる（図３及び特開平
６−１５５５９６号公報等参照）。このＦＲＰ層２は、
成形金型上で硬化させるので、その表面は鏡面状態に近
く、鋼管やコンクリート管に比べて低摩擦である。2. Description of the Related Art As shown in FIG. 14, a fiber reinforced plastic composite pipe generally has a fiber reinforced resin (hereinafter also referred to as "FRP") on an inner peripheral surface or an outer peripheral surface of a resin mortar layer 1.
Are laminated. This fiber reinforced plastic composite tube is manufactured by FRP on a cylindrical mold.
The layer 2, the resin mortar layer 1, and the FRP layer 2 are heat-cured in an oven while being sequentially wound (see FIG. 3 and JP-A-6-155596). This FRP layer 2
Since it is hardened on a molding die, its surface is close to a mirror surface and has lower friction than steel pipes and concrete pipes.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、電力ケ
ーブル保護管は管路を布設した後、電力ケーブルを通線
するが、ケーブル引き込み用ワイヤー及びケーブルを引
き込む場合、上記ワイヤーやケーブルと管内面とに摩擦
力が発生するため、引き込み張力が増大し、管路のスパ
ン長に限界があった。また、管路は直線ばかりでなく、
屈曲箇所を多数有する。この屈曲箇所では、引き込み張
力による管へのケーブル側圧が増大するため、さらに管
路スパン長に制限を受けていた。さらに、管とケーブル
の摩擦力が大きいと、管との摩擦により、ケーブルに対
し機能を損なう損傷が生じる場合があった。However, the power cable protection tube passes through the power cable after laying the conduit, but when the wire for drawing in the cable and the cable are drawn in, the wire or the cable and the inner surface of the tube are connected. Due to the generation of frictional force, the pulling tension increased, and the span length of the pipeline was limited. Also, the pipeline is not only straight,
It has many bends. At this bent portion, the cable side pressure on the pipe due to the pulling tension increases, so that the pipe span length is further restricted. Furthermore, if the frictional force between the pipe and the cable is large, the pipe may sometimes be damaged due to friction between the pipe and the cable.
【０００４】また、地中にトンネルを掘る場合、推進工
法が採用される場合が多いが、このとき使用される推進
管は、その外面が地盤と接触するため摩擦力が発生し、
推進工法の速度に影響する。また、最近の推進工法は、
直線状のトンネルだけでなく、途中で屈曲した部分を有
するトンネルの掘削にも利用可能となっている。この場
合、屈折箇所においては、推進管と地盤との接触も多く
なり、より大きな摩擦力が発生する。[0004] When a tunnel is dug in the ground, a propulsion method is often adopted, but the propulsion pipe used at this time generates frictional force because its outer surface comes into contact with the ground.
Affects the speed of the propulsion method. Also, the recent propulsion method is
It can be used not only for excavation of straight tunnels but also for excavation of tunnels having bent portions in the middle. In this case, the contact between the propulsion pipe and the ground increases at the bent portion, and a larger frictional force is generated.
【０００５】上記の電力ケーブル保護管や推進管の場
合、摩擦力が大きくなる内周面又は外周面に上記のＦＲ
Ｐ層２を設けた場合であっても、十分な摩擦抵抗の低下
を図ることができなかった。[0005] In the case of the above-mentioned power cable protection tube or propulsion tube, the above-mentioned FR is formed on the inner or outer peripheral surface where the frictional force increases.
Even when the P layer 2 was provided, it was not possible to sufficiently reduce the frictional resistance.
【０００６】そこで、この発明の課題は、繊維強化プラ
スチック複合管の内周面又は外周面の摩擦抵抗を低下さ
せることである。An object of the present invention is to reduce the frictional resistance of the inner or outer peripheral surface of a fiber-reinforced plastic composite pipe.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
め、この発明は、樹脂モルタル層の内周面又は外周面に
繊維強化樹脂からなる層を積層してなる上述の繊維強化
プラスチック複合管において、樹脂モルタル層の内周面
に積層した前記繊維強化樹脂層の内周面、又は樹脂モル
タル層の外周面に積層した前記繊維強化樹脂層の外周面
に、カーボン粉末を混入させた保護層を形成してなる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a fiber reinforced plastic composite pipe comprising a resin mortar layer and a fiber reinforced resin layer laminated on the inner or outer peripheral surface. The protective layer in which carbon powder is mixed into the inner peripheral surface of the fiber reinforced resin layer laminated on the inner peripheral surface of the resin mortar layer, or the outer peripheral surface of the fiber reinforced resin layer laminated on the outer peripheral surface of the resin mortar layer Is formed.
【０００８】また、繊維強化樹脂のみからなる繊維強化
プラスチック管においても、その内周面又は外周面に同
じくカーボン粉末を混入させた保護層を形成したのであ
る。[0008] Also in a fiber reinforced plastic pipe made of only a fiber reinforced resin, a protective layer containing carbon powder mixed therein is formed on the inner peripheral surface or the outer peripheral surface.
【０００９】上記カーボン粉末を含む保護層の表面は摩
擦抵抗がより少ないので、この保護層を形成した繊維強
化プラスチック複合管は、摩擦抵抗が低減される。な
お、カーボン粉末入り保護層は、繊維強化プラスチック
複合管の内外周の片面のみならず両面にも形成し得る。Since the surface of the protective layer containing the carbon powder has less frictional resistance, the fiber-reinforced plastic composite pipe having the protective layer formed thereon has reduced frictional resistance. The protective layer containing carbon powder can be formed not only on one side but also on both sides of the inner and outer circumferences of the fiber-reinforced plastic composite pipe.
【００１０】[0010]
【発明の実施の形態】上記保護層の具体的構成として
は、カーボン粉末を繊維強化樹脂層に混入させたり、カ
ーボン粉末を混入させた樹脂を繊維強化樹脂層に積層し
たものとし得る。カーボン粉末の繊維強化樹脂層への混
入は、樹脂層全体、又は内周面、外周面のみでもよく、
さらに、その樹脂層への混入は保護層を積層する場合に
も採用し得る。この場合は、積層保護層が剥離・摩耗な
どで消滅しても繊維強化樹脂層内の保護層で摩擦抵抗の
増加を防ぐ。BEST MODE FOR CARRYING OUT THE INVENTION As a specific constitution of the above-mentioned protective layer, it is possible to mix carbon powder into a fiber reinforced resin layer or to laminate resin mixed with carbon powder on the fiber reinforced resin layer. The mixing of the carbon powder into the fiber reinforced resin layer may be performed on the entire resin layer, or on the inner peripheral surface or the outer peripheral surface only,
Furthermore, the incorporation into the resin layer can also be adopted when a protective layer is laminated. In this case, even if the laminated protective layer disappears due to peeling or abrasion, the protective layer in the fiber reinforced resin layer prevents an increase in frictional resistance.
【００１１】また、保護層を積層により得る場合には、
不織布にカーボン粉末混入の樹脂を含浸させたものを積
層して保護層を形成すれば、保護層の耐摩耗性を向上さ
せることができ、繊維強化プラスチック複合管全体とし
ても耐摩耗性に優れたものとなる。In the case where the protective layer is obtained by lamination,
If the protective layer is formed by laminating non-woven fabric impregnated with resin mixed with carbon powder, the wear resistance of the protective layer can be improved, and the fiber-reinforced plastic composite pipe as a whole has excellent wear resistance. It will be.
【００１２】[0012]
【実施例】この発明にかかる繊維強化プラスチック複合
管は、図１（ａ）に示すように、樹脂モルタル層１１か
らなる基管の内周面又は外周面に繊維強化樹脂からなる
層１２を積層してなる。この樹脂モルタル層１１の内周
面に積層した上記繊維強化樹脂層１２の内周面、又は樹
脂モルタル層１１の外周面に積層した上記繊維強化樹脂
層１２の外周面には、カーボン粉末（図中、点で示す）
を混入（含有）させた樹脂からなる保護層１３が積層さ
れる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1 (a), a fiber reinforced plastic composite pipe according to the present invention has a layer 12 made of a fiber reinforced resin laminated on the inner or outer peripheral surface of a base pipe made of a resin mortar layer 11. Do it. Carbon powder (see FIG. 4) is applied to the inner peripheral surface of the fiber reinforced resin layer 12 laminated on the inner peripheral surface of the resin mortar layer 11 or the outer peripheral surface of the fiber reinforced resin layer 12 laminated on the outer peripheral surface of the resin mortar layer 11. (Indicated by dots)
The protective layer 13 made of a resin mixed (contained) is laminated.
【００１３】上記樹脂モルタル層１１は、繊維強化プラ
スチック複合管の基管となるものであり、鋼管やコンク
リート管と同様な強度を有すれば、特に材質には限定さ
れない。The resin mortar layer 11 is a base pipe of a fiber reinforced plastic composite pipe, and is not particularly limited in material as long as it has the same strength as a steel pipe or a concrete pipe.
【００１４】上記繊維強化樹脂層１２は、繊維に樹脂を
含浸させたものからなり、高強度の樹脂である。これに
使用される繊維としては、ガラス繊維、炭素繊維、金属
繊維等をあげることができる。また、これに使用される
樹脂としては、不飽和ポリエステル樹脂、エポキシ樹
脂、フェノール樹脂等の熱硬化性の樹脂等があげられ
る。The fiber reinforced resin layer 12 is made of a fiber impregnated with a resin, and is a high-strength resin. The fibers used for this include glass fibers, carbon fibers, metal fibers and the like. Examples of the resin used therein include thermosetting resins such as unsaturated polyester resin, epoxy resin, and phenol resin.
【００１５】上記カーボン粉末としては、各種のカーボ
ンを粉末状にしたものであり、例えば、グラファイト粉
末、カーボン繊維粉末等をあげることができる。また、
上記保護層１３に用いられる樹脂としては、不飽和ポリ
エステル樹脂、エポキシ樹脂、フェノール樹脂等の熱硬
化性樹脂、熱可塑性樹脂等があげられる。The carbon powder is a powder of various types of carbon, and examples thereof include graphite powder and carbon fiber powder. Also,
Examples of the resin used for the protective layer 13 include a thermosetting resin such as an unsaturated polyester resin, an epoxy resin, and a phenol resin, and a thermoplastic resin.
【００１６】上記カーボン粉末の粒径は、特に限定され
ないが、１〜１００μｍのものが好ましい。また、上記
保護層１３におけるカーボン粉末の樹脂に対する混入量
は、樹脂１００重量部に対し、カーボン粉末１〜１００
重量部がよく、１０〜５０重量部が好ましい。１重量部
より少ないと、摩擦係数を十分に低下させることができ
ないからであり、１００重量部より多いと、保護層自体
の強度が低下する場合があるからである。The particle size of the carbon powder is not particularly limited, but is preferably 1 to 100 μm. The amount of the carbon powder mixed with the resin in the protective layer 13 is 1 to 100 parts by weight with respect to 100 parts by weight of the resin.
The amount is preferably 10 to 50 parts by weight. If the amount is less than 1 part by weight, the friction coefficient cannot be sufficiently reduced. If the amount is more than 100 parts by weight, the strength of the protective layer itself may be reduced.
【００１７】繊維強化プラスチック複合管の他の例とし
ては、図２（ａ）に示すように、樹脂モルタル層１１を
有さないものをあげることができる。As another example of the fiber reinforced plastic composite tube, there is a tube having no resin mortar layer 11, as shown in FIG. 2 (a).
【００１８】この複合管は、繊維強化樹脂層１２のみか
らなる繊維強化プラスチック管の内周面又は外周面に、
カーボン粉末を混入させた樹脂からなる保護層１３を積
層したものである。これは、樹脂モルタル層１１を有さ
ないため、使用場所によっては強度の点で問題を有する
場合があるが、軽量となるため、橋梁等の重量制限を受
ける場所に使用する場合は好ましい。この場合に使用さ
れる繊維強化樹脂１２中の繊維及び樹脂、保護層１３中
のカーボン粉末及び樹脂は、上記の場合と同様である。This composite pipe is provided on the inner or outer peripheral surface of a fiber reinforced plastic pipe comprising only the fiber reinforced resin layer 12.
The protective layer 13 made of a resin mixed with carbon powder is laminated. Since this does not have the resin mortar layer 11, it may have a problem in strength depending on the place of use. However, since it is lightweight, it is preferable to use it in a place such as a bridge which is subject to weight restrictions. The fibers and resin in the fiber reinforced resin 12 and the carbon powder and resin in the protective layer 13 used in this case are the same as those described above.
【００１９】これらの繊維強化プラスチック複合管の製
造は、図３に示す方法で製造することができる。図１
（ａ）に示す層構造を有する繊維強化プラスチック複合
管を製造する場合は、円柱状の金型１７上に、まず、セ
ロファンなどの離型シート１９を巻き付け、その上に、
カーボン粉末混入の樹脂を含浸させた合成繊維製不織布
・マット等からなる保護層１８、ＦＲＰ層１４、樹脂モ
ルタル層１５、ＦＲＰ層１４、ＦＲＰ層１４’及び保護
層２０を順次にそれぞれ所定回数巻き付けて、保護層１
３、繊維強化樹脂層１２、樹脂モルタル層１１、繊維強
化樹脂層１２等を形成し、オーブン１６を通し熱硬化さ
せて、繊維強化プラスチック複合管を得る。保護層２０
はカーボン粉末を含有しない樹脂又は不織布等から成
る。These fiber reinforced plastic composite tubes can be manufactured by the method shown in FIG. FIG.
In the case of manufacturing a fiber-reinforced plastic composite pipe having a layer structure shown in (a), first, a release sheet 19 such as cellophane is wound on a cylindrical mold 17, and then,
The protective layer 18, the FRP layer 14, the resin mortar layer 15, the FRP layer 14, the FRP layer 14 ', and the protective layer 20, which are made of a synthetic fiber nonwoven fabric / mat impregnated with a resin mixed with carbon powder, are sequentially wound a predetermined number of times. And protective layer 1
3. Form a fiber reinforced resin layer 12, a resin mortar layer 11, a fiber reinforced resin layer 12, and the like, and heat cure through an oven 16 to obtain a fiber reinforced plastic composite tube. Protective layer 20
Is made of a resin or non-woven fabric which does not contain carbon powder.
【００２０】また、樹脂モルタル層１２を有さない繊維
強化プラスチック複合管、すなわち、図２（ａ）に示す
層構造を有する繊維強化プラスチック複合管を製造する
場合は、上記の方法において、上記樹脂モルタル層１５
の巻き付けを除いて製造すればよい。When manufacturing a fiber-reinforced plastic composite tube having no resin mortar layer 12, that is, a fiber-reinforced plastic composite tube having a layer structure shown in FIG. Mortar layer 15
It may be manufactured without winding.
【００２１】なお、ＦＲＰ層１４は、繊維をその長さ方
向に送り出しながら樹脂を含浸させたものであって、図
３からも明らかなように、円柱状の金型１７と垂直又は
垂直に近い角度をもって金型１７上に巻き付けられるの
に対し、ＦＲＰ層１４’は、円柱状の金型１７の長さ方
向に繊維がその長さ方向を同じにして送り出される。こ
のため、ＦＲＰ層１４、１４’の両強化繊維が交差する
こととなり、得られる繊維強化プラスチック複合管は、
強度がより向上する。The FRP layer 14 is formed by impregnating the resin while sending out the fibers in the length direction thereof. As is apparent from FIG. 3, the FRP layer 14 is perpendicular or nearly perpendicular to the cylindrical mold 17. While the FRP layer 14 'is wound around the mold 17 at an angle, the fibers are sent out in the longitudinal direction of the cylindrical mold 17 with the same length direction. For this reason, both reinforcing fibers of the FRP layers 14 and 14 ′ cross each other, and the obtained fiber-reinforced plastic composite pipe has
Strength is further improved.
【００２２】繊維強化プラスチック複合管の管構造は、
図１（ａ）、図２（ａ）の管構造だけに限られるもので
はなく、図１（ｂ）（ｃ）、図２（ｂ）（ｃ）に示すよ
うな管構造を採用してもよい。図１（ｂ）に示す管構造
は、繊維強化プラスチック複合管の内面の繊維強化樹脂
層１２の内周面部、又は、繊維強化プラスチック複合管
の外面の繊維強化樹脂層１２の外周面部、すなわち、繊
維強化プラスチック複合管の内面又は外面に設けられた
保護層１３と接する側の繊維強化樹脂層１２の周面部
に、カーボン粉末を含有させる構造である。また、図２
（ｂ）に示す管構造は、繊維強化樹脂層１２の内周面
部、又は繊維強化樹脂層１２の外周面部、すなわち、繊
維強化プラスチック複合管の内面又は外面に設けられた
保護層１３と接する側の繊維強化樹脂層１２の周面部
に、カーボン粉末を含有させる構造である。The fiber structure of the fiber-reinforced plastic composite pipe is as follows:
The present invention is not limited to the pipe structures shown in FIGS. 1A and 2A, and may employ a pipe structure as shown in FIGS. 1B, 2C and 2C. Good. The tube structure shown in FIG. 1B has an inner peripheral surface portion of the fiber reinforced resin layer 12 on the inner surface of the fiber reinforced plastic composite tube or an outer peripheral surface portion of the fiber reinforced resin layer 12 on the outer surface of the fiber reinforced plastic composite tube. The structure is such that carbon powder is contained in the peripheral surface of the fiber reinforced resin layer 12 on the side in contact with the protective layer 13 provided on the inner surface or the outer surface of the fiber reinforced plastic composite pipe. FIG.
The pipe structure shown in (b) has an inner peripheral surface portion of the fiber reinforced resin layer 12 or an outer peripheral surface portion of the fiber reinforced resin layer 12, that is, a side in contact with the protective layer 13 provided on the inner or outer surface of the fiber reinforced plastic composite pipe. In this structure, carbon powder is contained in the peripheral surface of the fiber reinforced resin layer 12.
【００２３】さらに、図１（ｃ）に示す管構造は、繊維
強化プラスチック複合管の内面又は外面の繊維強化樹脂
層１２の全体に、カーボン粉末を含有させる構造であ
る。さらにまた、図２（ｃ）に示す管構造は、繊維強化
樹脂層１２の全体に、カーボン粉末を含有させる構造で
ある。Further, the tube structure shown in FIG. 1 (c) is a structure in which carbon powder is contained in the entire fiber reinforced resin layer 12 on the inner surface or outer surface of the fiber reinforced plastic composite tube. Furthermore, the tube structure shown in FIG. 2C is a structure in which the entire fiber-reinforced resin layer 12 contains carbon powder.
【００２４】繊維強化樹脂層１２の一部又は全体にカー
ボン粉末を含有させることにより、保護層１３に加えて
潤滑性を増し、摩擦係数を低下させることができる。By including carbon powder in a part or the whole of the fiber reinforced resin layer 12, in addition to the protective layer 13, lubricity can be increased and the friction coefficient can be reduced.
【００２５】この繊維強化プラスチック複合管を製造す
る場合は、図３に示す方法を基準に、保護層１３に接す
る所定回数のＦＲＰ層１４、１４’又は全てのＦＲＰ層
１４、１４’に、カーボン粉末を加えればよい。このＦ
ＲＰ層１４、１４’に加えられるカーボン粉末の添加量
は、保護層１３の場合と同様である。When the fiber-reinforced plastic composite tube is manufactured, a predetermined number of FRP layers 14, 14 ′ or all FRP layers 14, 14 ′ in contact with the protective layer 13 are formed on the basis of the method shown in FIG. Powder may be added. This F
The amount of carbon powder added to the RP layers 14, 14 'is the same as in the case of the protective layer 13.
【００２６】上記の保護層１３は、不織布・マットを介
在せずに、カーボン粉末混入のみの樹脂で形成してもよ
い。The protective layer 13 may be formed of a resin containing only carbon powder without interposing a nonwoven fabric or mat.
【００２７】上記各実施例では、保護層１３を繊維強化
樹脂層１２とは別途に積層して形成したが、繊維強化樹
脂１２（ＦＲＰ層１４、１４’）にカーボン粉末を混入
して形成してもよい。すなわち、図１（ｂ）、（ｃ）、
図２（ｂ）、（ｃ）において、保護層１３を省略しても
よい。In each of the above embodiments, the protective layer 13 is formed separately from the fiber reinforced resin layer 12, but is formed by mixing carbon powder into the fiber reinforced resin 12 (FRP layers 14, 14 '). You may. That is, FIGS. 1 (b), (c),
2B and 2C, the protective layer 13 may be omitted.
【００２８】[0028]
【実験例】上記実施例の優れていることを確認するた
め、図４に示す往復すべり試験機２１を用いて実験を行
った。この往復すべり試験機は、上部固定試験片２２に
分銅２３で垂直荷重を与え下部移動試験片２４を固定し
た可動台を一定速度で往復運動させたときの水平方向の
摩擦力をロードセル２５により検出し、アンプにより増
幅させてサーボコータ２６に記録した。EXPERIMENTAL EXAMPLE In order to confirm the superiority of the above embodiment, an experiment was conducted using a reciprocating slip tester 21 shown in FIG. The reciprocating slide tester detects a horizontal frictional force by a load cell 25 when a vertical load is applied to an upper fixed test piece 22 with a weight 23 and a movable table to which a lower moving test piece 24 is fixed is reciprocated at a constant speed. Then, the signal was amplified by an amplifier and recorded on the servo coater 26.
【００２９】上部固定試験片２２としては、往復すべり
試験機２１による往復すべり運動に耐えるため、図５に
示すように、中央付近にガラス繊維３１を有し、周辺部
にポリエステル系の不織布３２を有し、所定量のカーボ
ン粉末３３を樹脂３４に分散させた樹脂板を用いた。用
いたカーボン粉末３３及び樹脂３４は、表１に示すとお
りで、往復すべり試験における下部移動試験片２４の種
類及び移動速度を表１に示す速度にて試験を行った。ま
た、比較例として樹脂のみからなる板を表１で示す同様
の内容で上部固定試験片２２として用いて試験を行っ
た。As shown in FIG. 5, the upper fixed test piece 22 has a glass fiber 31 near the center and a polyester-based nonwoven fabric 32 at the periphery as shown in FIG. 5 in order to withstand the reciprocating sliding movement of the reciprocating sliding tester 21. A resin plate having a predetermined amount of carbon powder 33 dispersed in a resin 34 was used. The carbon powder 33 and the resin 34 used were as shown in Table 1, and the type and the moving speed of the lower moving test piece 24 in the reciprocating sliding test were tested at the speeds shown in Table 1. Further, as a comparative example, a test was performed using a plate made of resin alone as the upper fixed test piece 22 with the same contents as shown in Table 1.
【００３０】上記各実施例１〜４、各比較例１〜４につ
いて、その試験を２回繰り返し、その結果得られた走行
距離と摩擦係数の関係を図６〜図１３に示す（実施例：
図６、８、１０、１２、比較例：図７、９、１１、１
３）。図中において、実線は１回目の試験結果を、点線
は２回目の試験結果を示す。なお、この試験に用いた原
材料等を下記に示す。The test was repeated twice for each of Examples 1 to 4 and Comparative Examples 1 to 4, and the relationship between the running distance and the coefficient of friction obtained as a result is shown in FIGS. 6 to 13 (Example:
6, 8, 10, 12, Comparative Example: FIGS. 7, 9, 11, 1
3). In the figure, the solid line shows the result of the first test, and the dotted line shows the result of the second test. The raw materials used in this test are shown below.
【００３１】（１）上部固定試験片 カーボン粉末 ・グラファイト粉末 日本黒鉛工業（株）社製（粒径１
０μｍ） ・カーボン繊維粉末 ドナカーボＳ−２４１：大日本イ
ンキ化学工業（株）社製（繊維径１３μｍ、平均長０．
１３ｍｍ） ポリエステル系不織布 ＯＬ−１１Ｋ：日本バイリー
ン（株）社製（厚さ０．３ｍｍ、３５ｇ／ｍ2 ） ビニルエステル樹脂（ＶＥ） ディックライトＵＥ−
３５０５：大日本インキ化学工業（株）社製 （２）下部移動試験片 鋼板 ・みがき鋼板 ＪＩＳ Ｇ３１４１「冷間圧延鋼板及び
鋼帯」のＳＰＰＣＣ−ＳＢの平板（表面粗さ Ｒａ＝
０．１０μｍ） ・塗装鋼板 変性アミン硬化剤型エポキシ樹脂系塗料
（ＮＢコート ＥＰ５０００標準型）：新日鐵化学
（株）社製（表面粗さ Ｒａ＝０．１２〜０．１５μ
ｍ）(1) Upper fixed test piece Carbon powder / Graphite powder Nippon Graphite Industry Co., Ltd.
Carbon fiber powder Donacarbo S-241: manufactured by Dainippon Ink and Chemicals, Inc. (fiber diameter: 13 μm, average length: 0.1 μm)
13 mm) Polyester nonwoven fabric OL-11K: manufactured by Japan Vilene Co., Ltd. (thickness: 0.3 mm, 35 g / m 2 ) Vinyl ester resin (VE) Dicklight UE-
3505: manufactured by Dainippon Ink and Chemicals, Inc. (2) Lower moving test piece steel plate, polished steel plate SPPCC-SB flat plate (surface roughness Ra =
0.10 μm) ・ Coated steel sheet Modified amine curing agent type epoxy resin-based coating (NB coat EP5000 standard type): manufactured by Nippon Steel Chemical Co., Ltd. (surface roughness Ra = 0.12 to 0.15 μm)
m)
【００３２】[0032]
【表１】 [Table 1]
【００３３】〔結果〕実施例１と比較例１とから、グラ
ファイト粉末を用いれば、最大の摩擦係数が１．２から
０．６に低減した。また、実施例２と比較例２とから、
下部移動試験片として塗装鋼板を用いた場合でも、最大
の摩擦係数が０．８から０．５に低減した。[Results] From Example 1 and Comparative Example 1, when the graphite powder was used, the maximum friction coefficient was reduced from 1.2 to 0.6. Further, from Example 2 and Comparative Example 2,
Even when a painted steel plate was used as the lower moving test piece, the maximum coefficient of friction was reduced from 0.8 to 0.5.
【００３４】実施例３と比較例３とから、カーボン繊維
粉末を用いれば、最大の摩擦係数が１．２から０．６に
低減した。また、実施例４と比較例４とから、下部移動
試験片として塗装鋼板を用いた場合でも、最大の摩擦係
数が０．８から０．７に低減した。From Example 3 and Comparative Example 3, when carbon fiber powder was used, the maximum friction coefficient was reduced from 1.2 to 0.6. Further, from Example 4 and Comparative Example 4, even when a painted steel plate was used as the lower moving test piece, the maximum friction coefficient was reduced from 0.8 to 0.7.
【００３５】[0035]
【発明の効果】この発明によれば、カーボン粉末を含む
保護層の表面は摩擦抵抗がより少ないので、摩擦抵抗を
低減することができる。According to the present invention, since the surface of the protective layer containing the carbon powder has less frictional resistance, the frictional resistance can be reduced.
【００３６】また、保護層に不織布を介在させることに
より、保護層の耐摩耗性を向上させるので、耐摩耗性に
優れた繊維強化プラスチック複合管全体を得ることがで
きる。Further, by interposing a nonwoven fabric in the protective layer, the wear resistance of the protective layer is improved, so that the entire fiber-reinforced plastic composite pipe having excellent wear resistance can be obtained.
【００３７】さらに、この発明で得られる繊維強化プラ
スチック複合管を用いれば、管路スパン長を延伸するこ
とができ、マンホール数も削減することができるので、
管路布設工事費の縮減が図れてコストダウンにつなげる
ことができる。Further, if the fiber reinforced plastic composite pipe obtained by the present invention is used, the pipe span length can be extended and the number of manholes can be reduced.
Pipeline construction costs can be reduced, which can lead to cost reductions.
【００３８】さらにまた、この発明で得られる繊維強化
プラスチック複合管中にケーブルを布設する際にも摩擦
を低減でき、ケーブルのシース摩耗による絶縁抵抗の低
下を防止できる。Furthermore, when a cable is laid in the fiber-reinforced plastic composite pipe obtained by the present invention, friction can be reduced, and a decrease in insulation resistance due to abrasion of the cable sheath can be prevented.
【００３９】また、保護層を繊維強化プラスチック複合
管の内周側に設けた場合は、電力ケーブル保護管とし
て、有効に利用することができる。When the protective layer is provided on the inner peripheral side of the fiber-reinforced plastic composite pipe, it can be effectively used as a power cable protective pipe.
【００４０】さらに、繊維強化プラスチック複合管が樹
脂モルタル層を有さないＦＲＰ管の場合は、橋梁等の重
量負荷を加えたくない場所に有効に用いることができ
る。Further, when the fiber reinforced plastic composite pipe is an FRP pipe having no resin mortar layer, it can be effectively used in places where a heavy load such as a bridge is not desired.
【００４１】さらにまた、保護層を繊維強化プラスチッ
ク複合管の外周側に設けた場合は、地中にトンネルを掘
る工法の一種である推進工法に使用される推進管として
使用することができる。この場合、推進管と地盤との接
触による摩擦力を低下させるので、途中に屈曲した部分
を有するトンネルを掘削する場合でも有効となる。Further, when the protective layer is provided on the outer peripheral side of the fiber-reinforced plastic composite pipe, it can be used as a propulsion pipe used in a propulsion method which is a kind of a method of digging a tunnel in the ground. In this case, since the frictional force due to the contact between the propulsion pipe and the ground is reduced, it is effective even when excavating a tunnel having a bent portion in the middle.
【図１】（ａ）この発明にかかる繊維強化プラスチック
複合管の管構造の例を示す一部拡大断面図 （ｂ）この発明にかかる繊維強化プラスチック複合管の
管構造の他の例を示す一部拡大断面図 （ｃ）この発明にかかる繊維強化プラスチック複合管の
管構造の他の例を示す一部拡大断面図FIG. 1A is a partially enlarged cross-sectional view showing an example of a pipe structure of a fiber-reinforced plastic composite pipe according to the present invention. FIG. 1B is a view showing another example of a pipe structure of a fiber-reinforced plastic composite pipe according to the present invention. Partial enlarged sectional view (c) Partially enlarged sectional view showing another example of the pipe structure of the fiber-reinforced plastic composite pipe according to the present invention.
【図２】（ａ）この発明にかかる繊維強化プラスチック
複合管の管構造の他の例を示す一部拡大断面図 （ｂ）この発明にかかる繊維強化プラスチック複合管の
管構造の他の例を示す一部拡大断面図 （ｃ）この発明にかかる繊維強化プラスチック複合管の
管構造の他の例を示す一部拡大断面図FIG. 2 (a) is a partially enlarged cross-sectional view showing another example of the tube structure of the fiber-reinforced plastic composite tube according to the present invention. (B) Another example of the tube structure of the fiber-reinforced plastic composite tube according to the present invention. (C) Partial enlarged cross-sectional view showing another example of the pipe structure of the fiber-reinforced plastic composite pipe according to the present invention.
【図３】繊維強化プラスチック複合管を製造する装置を
示す概略図FIG. 3 is a schematic view showing an apparatus for producing a fiber-reinforced plastic composite pipe.
【図４】往復すべり試験機の例を示す概略図FIG. 4 is a schematic diagram showing an example of a reciprocating slip tester.
【図５】上部固定試験片の構造を示す断面図FIG. 5 is a sectional view showing the structure of an upper fixed test piece.
【図６】実施例１の試験における走行距離と摩擦係数の
関係を示すグラフFIG. 6 is a graph showing a relationship between a running distance and a coefficient of friction in a test of Example 1.
【図７】比較例１の試験における走行距離と摩擦係数の
関係を示すグラフFIG. 7 is a graph showing a relationship between a running distance and a friction coefficient in a test of Comparative Example 1.
【図８】実施例２の試験における走行距離と摩擦係数の
関係を示すグラフFIG. 8 is a graph showing a relationship between a running distance and a coefficient of friction in a test of Example 2.
【図９】比較例２の試験における走行距離と摩擦係数の
関係を示すグラフFIG. 9 is a graph showing a relationship between a running distance and a friction coefficient in a test of Comparative Example 2.
【図１０】実施例３の試験における走行距離と摩擦係数
の関係を示すグラフFIG. 10 is a graph showing a relationship between a running distance and a coefficient of friction in a test of Example 3.
【図１１】比較例３の試験における走行距離と摩擦係数
の関係を示すグラフFIG. 11 is a graph showing a relationship between a running distance and a friction coefficient in a test of Comparative Example 3.
【図１２】実施例４の試験における走行距離と摩擦係数
の関係を示すグラフFIG. 12 is a graph showing a relationship between a running distance and a friction coefficient in a test of Example 4.
【図１３】比較例４の試験における走行距離と摩擦係数
の関係を示すグラフFIG. 13 is a graph showing a relationship between a running distance and a coefficient of friction in a test of Comparative Example 4.
【図１４】従来の繊維強化プラスチック複合管の管構造
の例を示す一部拡大断面図FIG. 14 is a partially enlarged cross-sectional view showing an example of a pipe structure of a conventional fiber-reinforced plastic composite pipe.
１ 樹脂モルタル層 ２ ＦＲＰ層 １１ 樹脂モルタル層 １２ 繊維強化樹脂層（ＦＲＰ層） １３ カーボン粉末入り保護層 １４、１４’ 巻き付け繊維強化樹脂層（ＦＲＰ層） １５ 巻き付け樹脂モルタル層 １６ オーブン １７ 円柱状金型 １８ 保護層 １９ 離型シート ２０ 保護層 ２１ 往復すべり試験機 ２２ 上部固定試験片 ２３ 分銅 ２４ 下部移動試験片 ２５ ロードセル ２６ サーボコーダ ３１ ガラス繊維 ３２ ポリエステル系不織布 ３３ カーボン粉末 ３４ 樹脂 DESCRIPTION OF SYMBOLS 1 Resin mortar layer 2 FRP layer 11 Resin mortar layer 12 Fiber reinforced resin layer (FRP layer) 13 Protective layer containing carbon powder 14, 14 'Wound fiber reinforced resin layer (FRP layer) 15 Wound resin mortar layer 16 Oven 17 Columnar gold Mold 18 Protective layer 19 Release sheet 20 Protective layer 21 Reciprocating sliding tester 22 Upper fixed test piece 23 Weight 24 Lower moving test piece 25 Load cell 26 Servo coder 31 Glass fiber 32 Polyester nonwoven fabric 33 Carbon powder 34 Resin
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｋ 105:06 507:04 Ｂ２９Ｌ 23:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B29K 105: 06 507: 04 B29L 23:00
Claims (6)
維強化樹脂からなる層を積層してなる繊維強化プラスチ
ック複合管において、 上記樹脂モルタル層の内周面に積層した上記繊維強化樹
脂層の内周面、又は樹脂モルタル層の外周面に積層した
上記繊維強化樹脂層の外周面に、カーボン粉末を混入さ
せた保護層を形成してなる繊維強化プラスチック複合
管。1. A fiber reinforced plastic composite tube comprising a resin mortar layer and a fiber reinforced resin layer laminated on an inner or outer peripheral surface thereof, wherein the fiber reinforced resin layer laminated on an inner peripheral surface of the resin mortar layer. A fiber-reinforced plastic composite pipe comprising a protective layer containing carbon powder formed on the inner peripheral surface of the above or on the outer peripheral surface of the fiber-reinforced resin layer laminated on the outer peripheral surface of the resin mortar layer.
ラスチック管の内周面又は外周面に、カーボン粉末を混
入させた保護層を形成してなる繊維強化プラスチック複
合管。2. A fiber-reinforced plastic composite pipe comprising a fiber-reinforced plastic pipe made of only a fiber-reinforced resin layer and a protective layer containing carbon powder mixed on the inner or outer peripheral surface thereof.
繊維強化樹脂層の内周面部又は外周面部にのみにカーボ
ン粉末を混入させて上記保護層を形成してなる請求項１
又は２に記載の繊維強化プラスチック複合管。3. The protective layer is formed by mixing carbon powder into the entire fiber reinforced resin layer or only into the inner peripheral surface or the outer peripheral surface of the fiber reinforced resin layer.
Or the fiber-reinforced plastic composite tube according to 2.
して形成してなる請求項１又は２に記載の繊維強化プラ
スチック複合管。4. The fiber-reinforced plastic composite pipe according to claim 1, wherein the protective layer is laminated on the fiber-reinforced resin layer.
繊維強化樹脂層の内周面部又は外周面部にカーボン粉末
を混入させてなる請求項４に記載の繊維強化プラスチッ
ク複合管。5. The fiber reinforced plastic composite pipe according to claim 4, wherein carbon powder is mixed into the entire fiber reinforced resin layer or the inner peripheral surface or the outer peripheral surface of the fiber reinforced resin layer.
の樹脂を含浸してなるものである請求項４又は５に記載
の繊維強化プラスチック複合管。6. The fiber reinforced plastic composite pipe according to claim 4, wherein the protective layer is formed by impregnating a nonwoven fabric with a resin mixed with carbon powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30171597A JP3352368B2 (en) | 1997-11-04 | 1997-11-04 | Fiber reinforced plastic composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30171597A JP3352368B2 (en) | 1997-11-04 | 1997-11-04 | Fiber reinforced plastic composite tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11129363A true JPH11129363A (en) | 1999-05-18 |
| JP3352368B2 JP3352368B2 (en) | 2002-12-03 |
Family
ID=17900292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30171597A Expired - Fee Related JP3352368B2 (en) | 1997-11-04 | 1997-11-04 | Fiber reinforced plastic composite tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3352368B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466092A (en) * | 2010-11-02 | 2012-05-23 | 周永清 | High-pressure resistant glass fiber reinforced plastic enhanced steel-plastic composite pipe |
| CN103307370A (en) * | 2013-07-03 | 2013-09-18 | 南通市长海实业有限公司 | Novel fiber reinforced plastic pipe |
-
1997
- 1997-11-04 JP JP30171597A patent/JP3352368B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466092A (en) * | 2010-11-02 | 2012-05-23 | 周永清 | High-pressure resistant glass fiber reinforced plastic enhanced steel-plastic composite pipe |
| CN103307370A (en) * | 2013-07-03 | 2013-09-18 | 南通市长海实业有限公司 | Novel fiber reinforced plastic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3352368B2 (en) | 2002-12-03 |
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