JP2006265316A - Lubricant for coupling of piping - Google Patents

Lubricant for coupling of piping Download PDF

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Publication number
JP2006265316A
JP2006265316A JP2005082893A JP2005082893A JP2006265316A JP 2006265316 A JP2006265316 A JP 2006265316A JP 2005082893 A JP2005082893 A JP 2005082893A JP 2005082893 A JP2005082893 A JP 2005082893A JP 2006265316 A JP2006265316 A JP 2006265316A
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Japan
Prior art keywords
lubricant
water
oil
weight
polybutene
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JP2005082893A
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Japanese (ja)
Inventor
Takeshi Yamamoto
健 山本
Mitsuharu Katsumi
光春 勝見
Tamotsu Nakagami
保 中上
Katsuya Sakaguchi
克也 坂口
Yasubumi Hayashi
泰文 林
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Kurimoto Kasei Kogyo KK
Aqua Chemical Co Ltd
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Kurimoto Kasei Kogyo KK
Aqua Chemical Co Ltd
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Priority to JP2005082893A priority Critical patent/JP2006265316A/en
Publication of JP2006265316A publication Critical patent/JP2006265316A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubricant for the piping coupling use, insoluble in water and resistant to the dissolution of the component in water. <P>SOLUTION: The lubricant is composed of rapeseed oil, hardened tallow oil, polybutene and liquid paraffin. A creamy lubricant having excellent freeze resistance can be produced by mixing 35-55 pts.wt. of rapeseed oil, 5-15 pts.wt. of hardened tallow oil, 5-15 pts.wt. of polybutene and 30-40 pts.wt. of liquid paraffin. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、配管同士を接合する際の摩擦を低減する潤滑剤に関するものである。   The present invention relates to a lubricant that reduces friction when pipes are joined together.

農業用水や上下水道等においては、複数の配管を接合することで、供給・排出目的物の流路を形成することが行なわれている。配管には、軽量で軟弱地盤にも有利であって、熱伸縮が小さく、耐震性、耐食性、耐摩耗性に優れ、その上、電食の心配のない強化プラスチック複合管が多用されており、ゴム輪を備えたものが使用されている。   In agricultural water, water and sewage, etc., a flow path for supplying and discharging objects is formed by joining a plurality of pipes. The piping is lightweight and advantageous for soft ground, has low thermal expansion and contraction, is excellent in earthquake resistance, corrosion resistance, and wear resistance. Those with rubber rings are used.

図1は、配管の接続の一例を説明するための断面図である。図示の配管は、両端がテーパ状に面取りされた円筒管である本体部1と、本体部1の外径よりやや大径の内径に設定されているカラー2と、カラー2の内周面に接着されたゴム輪3とからなり、本体部1がゴム輪3内に圧入されたものである。この配管のゴム輪3は、軸方向両端近傍に峰状のリップ3aを周方向に設け、更に、中央に本体部1の圧入を阻止するストッパ3bを周方向に設けている。リップ3aが軸方向内向きに傾斜しているので、本体管1の圧入は容易で、抜き出し困難となっている。このような配管を連結することにより、配管の接合が行なわれるが、レバーブロックを使用して連結が行なわれ、接合の際には本体管1とゴム輪3との大きな摩擦が生じることになる。   Drawing 1 is a sectional view for explaining an example of connection of piping. The pipe shown in the drawing is a main body part 1 which is a cylindrical pipe whose both ends are chamfered, a collar 2 which is set to an inner diameter slightly larger than the outer diameter of the main body part 1, and an inner peripheral surface of the collar 2. The main body 1 is press-fitted into the rubber ring 3. The rubber ring 3 of this pipe is provided with a ridge-shaped lip 3a in the circumferential direction in the vicinity of both ends in the axial direction, and further provided with a stopper 3b in the center in the circumferential direction to prevent the main body 1 from being press-fitted. Since the lip 3a is inclined inward in the axial direction, it is easy to press-fit the main body tube 1 and it is difficult to extract it. By connecting such pipes, the pipes are joined, but the lever blocks are used for joining, and a large friction between the main body pipe 1 and the rubber ring 3 occurs during the joining. .

このような摩擦を低減するために、接続前のゴム輪3の内周や配管2の外周に潤滑剤を塗りつけることが行なわれる。このとき使用する潤滑剤としては、例えば、特許文献1にポリアクリル酸のアルカリ金属塩の水溶液を主成分とする潤滑剤が、特許文献2に脂肪族ジカルボン酸塩、増粘剤および多価アルコールを含有する潤滑剤が、特許文献3に脂肪酸グリセリド、ケイ酸塩および/又はアルミニウム塩からなる増粘剤、並びに多価アルコールを配合した潤滑剤が開示されている。
特開昭53−31066号公報(特許請求の範囲) 特開昭53−79163号公報(特許請求の範囲) 特公昭62−14597号公報(特許請求の範囲)
In order to reduce such friction, a lubricant is applied to the inner periphery of the rubber ring 3 and the outer periphery of the pipe 2 before connection. Examples of the lubricant used at this time include a lubricant mainly composed of an aqueous solution of an alkali metal salt of polyacrylic acid in Patent Document 1, and an aliphatic dicarboxylate, a thickener and a polyhydric alcohol in Patent Document 2. Patent Document 3 discloses a lubricant containing a thickener composed of a fatty acid glyceride, a silicate and / or an aluminum salt, and a polyhydric alcohol.
Japanese Patent Laid-Open No. 53-31066 (Claims) JP-A-53-79163 (Claims) Japanese Patent Publication No. 62-14597 (Claims)

上記特許文献1および2に開示されている潤滑剤は、水溶性である。一方の特許文献3に記載されている潤滑剤は、その成分に水溶性の多価アルコールが含有されているので、水と長時間接触した潤滑剤から多価アルコールが溶出する蓋然性がある。そのため、各特許文献に記載されている潤滑剤を雨天時の屋外や水中で長時間露呈した後に用いると、配管接続を行うに際して支障が生じることになる。従って、潤滑剤およびその内容成分が非水溶性の潤滑剤が求められている。   The lubricants disclosed in Patent Documents 1 and 2 are water-soluble. On the other hand, the lubricant described in Patent Document 3 contains a water-soluble polyhydric alcohol in its components, so that the polyhydric alcohol is likely to be eluted from the lubricant that has been in contact with water for a long time. For this reason, if the lubricants described in each patent document are used after being exposed for a long time outdoors or in the rain in the rain, troubles occur when connecting the pipes. Accordingly, there is a need for lubricants and lubricants whose contents are water-insoluble.

その他の潤滑剤の性質には、寒冷地で固化して使用不能とならない耐凍性や、塗布された潤滑剤が垂れ落ちるような流動性がないことが求められている。流動性については、直管部の内径が3000mm程度の大口径の配管も使用される実情から、潤滑剤の塗布作業中や塗布後に垂れ落ちて塗布斑が生じることがない非流動性が求められている。   The properties of other lubricants are required to be freezing resistance that does not become unusable when solidified in a cold region, or to have no fluidity that causes the applied lubricant to sag. Regarding fluidity, from the fact that a large-diameter pipe with an inner diameter of the straight pipe part of about 3000 mm is also used, non-fluidity is required that does not sag during application of the lubricant or after application, resulting in application spots. ing.

上述のような事情に鑑み、本発明は、少なくとも内容成分が水に溶出することもない非水溶性の潤滑剤を提供することを目的とするものである。   In view of the circumstances as described above, an object of the present invention is to provide a water-insoluble lubricant in which at least a content component does not elute in water.

本発明者は、特定の化合物を配合して製造された潤滑剤が水に溶解することもなく、さらに内容成分が水に溶出することもないことを見出し本発明を完成するに至った。即ち、本発明は、菜種油、牛脂硬化油、ポリブテン、および流動パラフィンからなる非水溶性配管接続用潤滑剤である。   The present inventor has found that a lubricant produced by blending a specific compound does not dissolve in water, and that the content component does not dissolve in water, and has completed the present invention. That is, the present invention is a water-insoluble lubricant for pipe connection comprising rapeseed oil, beef tallow oil, polybutene, and liquid paraffin.

前記潤滑剤は、菜種油35〜55重量部、牛脂硬化油5〜15重量部、ポリブテン5〜15重量部、流動パラフィン30〜40重量部を混合したものであることが、潤滑剤がクリーム状となって好適である。   The lubricant is a mixture of 35 to 55 parts by weight of rapeseed oil, 5 to 15 parts by weight of beef tallow oil, 5 to 15 parts by weight of polybutene, and 30 to 40 parts by weight of liquid paraffin. It is suitable.

上記のように構成された発明によれば、内容成分が溶出することもない非水溶性の潤滑剤となり、潤滑剤成分が上記所定の濃度であるときには、クリーム状で、耐凍性に優れたものとなって、配管への均一な塗布を阻害する塗布後の垂れ落ちがなく、寒冷地においても使用することが可能な潤滑剤となる。   According to the invention configured as described above, it becomes a water-insoluble lubricant in which the content component does not elute, and when the lubricant component has the predetermined concentration, it is creamy and has excellent freezing resistance As a result, there is no dripping after application that hinders uniform application to the piping, and the lubricant can be used even in cold regions.

以下、本発明を実施形態に基づいて詳細に説明する。本実施形態における潤滑剤は、環境に適した植物系油脂の一種である菜種油、動物系油脂に由来する牛脂硬化油、ポリブテン、および流動パラフィンを成分としており、これらの化合物を混合することにより製造される。製造における混合手順は、特に指定されるものではない。   Hereinafter, the present invention will be described in detail based on embodiments. The lubricant in the present embodiment contains rapeseed oil, which is a kind of vegetable oil and fat suitable for the environment, beef fat cured oil derived from animal oil and fat, polybutene, and liquid paraffin, and is produced by mixing these compounds. Is done. The mixing procedure in production is not particularly specified.

潤滑剤の製造においては、菜種油が35〜55重量部、牛脂硬化油が5〜15重量部、ポリブテンが5〜15重量部、および流動パラフィンが30〜40重量部とされていると良い。この成分重量であるとき、潤滑剤は、クリーム状の耐凍性に優れたものとなる。   In the production of the lubricant, it is preferable that the rapeseed oil is 35 to 55 parts by weight, the beef tallow oil is 5 to 15 parts by weight, the polybutene is 5 to 15 parts by weight, and the liquid paraffin is 30 to 40 parts by weight. When this component weight is used, the lubricant has excellent cream-like frost resistance.

ポリブテンは、40℃の動粘度が2500〜4500cStのものであると良く、好ましくは、3000〜4000cStである。   The polybutene may have a kinematic viscosity at 40 ° C. of 2500 to 4500 cSt, and preferably 3000 to 4000 cSt.

流動パラフィンは、40℃の動粘度が50〜85cStのものであると良く、好ましくは、60〜75cStであり、更に好ましくは、65〜70cStである。   The liquid paraffin may have a kinematic viscosity at 40 ° C. of 50 to 85 cSt, preferably 60 to 75 cSt, and more preferably 65 to 70 cSt.

以下、本発明を実施例をもとに具体的に示すが、本発明はこれらに限定されるものではない。   Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited thereto.

菜種白絞油45g、牛脂硬化油10g、40℃の動粘度が3450cStのポリブテン10g、40℃の動粘度が67.93cStの流動パラフィン35gを攪拌混合することによりクリーム状の潤滑剤を得た。この潤滑剤は、液垂れなく配管に均一に塗布することが可能であり、水に溶解することもなく、配管の接続に使用する際の潤滑剤として十分に機能を発揮していたことが確認されている。   A creamy lubricant was obtained by stirring and mixing 45 g of rapeseed white squeezed oil, 10 g of beef tallow oil, 10 g of polybutene having a kinematic viscosity of 3450 cSt at 40 ° C., and 35 g of liquid paraffin having a kinematic viscosity of 40.93 cSt of 67.93 cSt. This lubricant can be applied uniformly to pipes without dripping, and does not dissolve in water. It was confirmed that it functioned sufficiently as a lubricant when used to connect pipes. Has been.

配管の接続の一例を説明するための断面模式図である。It is a cross-sectional schematic diagram for demonstrating an example of the connection of piping.

符号の説明Explanation of symbols

嵌入管 2
ゴム輪 3
Insertion tube 2
Rubber ring 3

Claims (2)

菜種油、牛脂硬化油、ポリブテン、および流動パラフィンからなる非水溶性配管接続用潤滑剤。 A non-water-soluble lubricant for connecting pipes consisting of rapeseed oil, beef tallow oil, polybutene, and liquid paraffin. 菜種油35〜55重量部、牛脂硬化油5〜15重量部、ポリブテン5〜15重量部、および流動パラフィン30〜40重量部を混合したクリーム状の非水溶性配管接続用潤滑剤。 A cream-like water-insoluble pipe connection lubricant in which 35 to 55 parts by weight of rapeseed oil, 5 to 15 parts by weight of beef tallow oil, 5 to 15 parts by weight of polybutene, and 30 to 40 parts by weight of liquid paraffin are mixed.
JP2005082893A 2005-03-23 2005-03-23 Lubricant for coupling of piping Pending JP2006265316A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS366706B1 (en) * 1953-07-17 1961-06-05
JPS52114603A (en) * 1976-03-19 1977-09-26 Sekisui Chem Co Ltd Lubricant for pipe jointing and method for joining pipe
JPS6284188A (en) * 1985-10-08 1987-04-17 Kubota Ltd Lubricant composition for rubber ring type joint
JPH0284495A (en) * 1988-09-20 1990-03-26 Hitachi Ltd Method for plastic working and production of electrically conductive wire using the same method
JPH0436390A (en) * 1990-05-31 1992-02-06 Oriental Sangyo Kk Solid demolding agent
JP2002221288A (en) * 2001-01-25 2002-08-09 Sumitomo Metal Ind Ltd Threaded joint for steel pipe excellent in seizure resistance and rust preventability

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS366706B1 (en) * 1953-07-17 1961-06-05
JPS52114603A (en) * 1976-03-19 1977-09-26 Sekisui Chem Co Ltd Lubricant for pipe jointing and method for joining pipe
JPS6284188A (en) * 1985-10-08 1987-04-17 Kubota Ltd Lubricant composition for rubber ring type joint
JPH0284495A (en) * 1988-09-20 1990-03-26 Hitachi Ltd Method for plastic working and production of electrically conductive wire using the same method
JPH0436390A (en) * 1990-05-31 1992-02-06 Oriental Sangyo Kk Solid demolding agent
JP2002221288A (en) * 2001-01-25 2002-08-09 Sumitomo Metal Ind Ltd Threaded joint for steel pipe excellent in seizure resistance and rust preventability

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