JPS5941378A - Pipe fitting - Google Patents
Pipe fittingInfo
- Publication number
- JPS5941378A JPS5941378A JP57153186A JP15318682A JPS5941378A JP S5941378 A JPS5941378 A JP S5941378A JP 57153186 A JP57153186 A JP 57153186A JP 15318682 A JP15318682 A JP 15318682A JP S5941378 A JPS5941378 A JP S5941378A
- Authority
- JP
- Japan
- Prior art keywords
- water
- polymer
- coupling
- pipe fitting
- acrylic acid
- 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.)
- Pending
Links
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 6
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 5
- 229920000247 superabsorbent polymer Polymers 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 38
- 230000008878 coupling Effects 0.000 abstract description 15
- 238000010168 coupling process Methods 0.000 abstract description 15
- 238000005859 coupling reaction Methods 0.000 abstract description 15
- 229920000642 polymer Polymers 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 16
- NPERTKSDHFSDLC-UHFFFAOYSA-N ethenol;prop-2-enoic acid Chemical compound OC=C.OC(=O)C=C NPERTKSDHFSDLC-UHFFFAOYSA-N 0.000 description 7
- 229920002472 Starch Polymers 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 229920000881 Modified starch Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Landscapes
- Joints With Sleeves (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、電線管のコンクＶ−を埋込配管において、
水および水に含−まれたセメントや倣細な砂等の異物の
侵入を防止することができる管継手に関するもｑ５であ
る。DETAILED DESCRIPTION OF THE INVENTION This invention provides a method for installing a conduit V- in embedded piping.
Q5 also relates to a pipe joint that can prevent the intrusion of water and foreign substances such as cement and fine sand contained in the water.
従来のこの種のカップリングは、内周面に吸収剤として
澱粉Ｕ導体をバインダを用いて付肩させていた。この澱
粉誘導体は、合成ポリマと澱粉とからなり、その比率が
３＝２で１りす、有機物である澱粉が４０％も包まれて
いるため、金属製のカップリング等の内周面に付着させ
たときに吸水剤である澱粉誘導体が長期間の間に吸水−
膨張−乾燥→吸水というザイクルを繰返す間にカップリ
ング等の内周面が腐蝕するおそれがあった。In conventional couplings of this kind, a starch U conductor was attached to the inner peripheral surface as an absorbent using a binder. This starch derivative is composed of a synthetic polymer and starch, and since the ratio is 3 = 2, it contains 40% of the organic starch, so it cannot be attached to the inner peripheral surface of metal couplings, etc. When starch derivatives, which are water-absorbing agents, absorb water over a long period of time,
There was a risk that the inner peripheral surface of the coupling etc. would corrode while repeating the cycle of expansion-drying->water absorption.
したがって、この発明の目的は、内周面の腐蝕を少くで
き、かつ水および水に含まれた異物の侵入を防止するこ
とができる管継手を提供することである。Therefore, an object of the present invention is to provide a pipe joint that can reduce corrosion of the inner circumferential surface and can prevent water and foreign substances contained in the water from entering the pipe joint.
この発明の管継手は管継手本体の内周面に吸水剤として
ビニルアルコール／アクリル酸共重合体を主成分とした
ｊ％吸水注ポリマを付着させたことを特徴とする。The pipe joint of the present invention is characterized in that a j% water-absorbing injection polymer containing vinyl alcohol/acrylic acid copolymer as a main component is adhered to the inner circumferential surface of the pipe joint body as a water-absorbing agent.
以「、太施例について詳しく説明する。第１図および第
２図は金属製のカップリング１の内周面にビールアルコ
ール／アクリル酸共重合体を主成分とした高吸水性ポリ
マ２（スミカゲルＳ−５０１住友化学工業株式会社製、
スミカゲルは登録商標）を付着させたものを示している
。この場合、カップリング１とｔ線管との電気的な接続
性を上記高吸水性ポリマ２により低下させることがない
ように、止めねじ３の１’ １１１１の角度θ（３０〜
６０度）の範囲は上記高吸水性ポリマ２を何着せず、カ
ップリング本体ｌと電線管とが直接接触するようにして
いる。また、防水効果を１００％満足させるため、高吸
水性ポリマ２はカップリング本体１の端部だけでなく止
めねじ３の位置より最低Ｘ（１０晒）以上奥へ入った位
１ａまで付着させている。Hereinafter, a detailed description of a major example will be given. Figures 1 and 2 show a super absorbent polymer 2 (Sumikagel) mainly composed of beer alcohol/acrylic acid copolymer on the inner peripheral surface of a metal coupling 1. S-501 manufactured by Sumitomo Chemical Co., Ltd.
Sumikagel (registered trademark) is shown. In this case, the angle θ (30~
60 degrees), the above-mentioned super absorbent polymer 2 is not applied, and the coupling body 1 and the electric conduit are in direct contact with each other. In addition, in order to achieve 100% waterproof effect, the superabsorbent polymer 2 is attached not only to the end of the coupling body 1 but also to a point 1a that is at least X (10 mm) deeper than the position of the set screw 3. There is.
上記高吸水性ポリマ２は、粉体の−ままでカップリング
本体１の内面に付着させるか、まだは、ビヒクルの中に
高吸水性ポリマ２を含有させた塗料をカップリング本体
１の内周面に塗布する等の方法でカップリング本体１の
内周面に付着させる。The superabsorbent polymer 2 may be applied as a powder to the inner surface of the coupling body 1, or a paint containing the superabsorbent polymer 2 in a vehicle may be applied to the inner surface of the coupling body 1. It is attached to the inner circumferential surface of the coupling body 1 by a method such as applying it to the surface.
スミカゲル５−５０は、平均粒径１５０〜２５０μの白
色粒状粉体で、Ｉ）Ｈはほぼ中性であり、吸水能は純水
で５００〜７００倍である。また、水と接触すると短時
間に吸水膨潤し、吸収した水を保持する。Sumikagel 5-50 is a white granular powder with an average particle size of 150 to 250μ, I)H is almost neutral, and the water absorption capacity is 500 to 700 times that of pure water. Also, when it comes into contact with water, it absorbs water and swells in a short period of time, retaining the absorbed water.
また、すぐれたゲル強度を有し、吸水状態においても粒
状（球状）を維持する。また、水および溶媒に対してほ
とんど溶解しない。また、熱９紫外線に対してきわめて
安定である。It also has excellent gel strength and maintains its granular (spherical) shape even when water is absorbed. It also hardly dissolves in water or solvents. It is also extremely stable against heat and ultraviolet light.
第３図はスミカゲル５−５０の吸水倍率と吸水時間の特
徴を示している。この図によれば、５〜１０分で吸水量
が最大（吸水能が５００倍）に達することがわかる。Figure 3 shows the characteristics of water absorption capacity and water absorption time of Sumikagel 5-50. According to this figure, it can be seen that the amount of water absorption reaches its maximum (water absorption capacity is 500 times) in 5 to 10 minutes.
次表はスミカゲル５−５０の吸水−乾燥サイクルの繰返
しによる吸水倍率の変化を示している。この表によれば
、吸水能が吸水−乾燥サイクルによりほとんど変化しな
いことがわかる。なお、乾燥は５０℃のオーブンを使用
して行った。The following table shows the change in water absorption capacity of Sumikagel 5-50 due to repeated water absorption-drying cycles. According to this table, it can be seen that the water absorption capacity hardly changes due to the water absorption-drying cycle. Note that drying was performed using an oven at 50°C.
第４図はスミカゲル５−５０のＩＩＡＷをパラメータと
した吸水倍率と加熱時間の特性を示している。FIG. 4 shows the characteristics of water absorption capacity and heating time using IIAW of Sumikagel 5-50 as a parameter.
この図によれば、１２０℃−までの温度では吸水倍率が
ほとんど変化しないことがわかる。According to this figure, it can be seen that the water absorption capacity hardly changes at temperatures up to 120°C.
スミカゲルＳ−５０ｕ、はぼ中性であるため、カップリ
ング本体１の内面を腐蝕させて錆を発生させることは少
ない。また、吸水能が十分に高いため、水や水に含まれ
る異物の侵入を十分防止することができる。また、吸水
−乾燥サイクルによる吸水能の変化が少ないため、水や
水に含まれる異物の侵入防止能力の経年劣化が少い。ま
た、熱変化による吸水能の変化が少いため、屋外配管に
使用しても水等の浸入防止を十分に行える。Since Sumikagel S-50u is almost neutral, it is unlikely to corrode the inner surface of the coupling body 1 and cause rust. In addition, since the water absorption capacity is sufficiently high, it is possible to sufficiently prevent the intrusion of water and foreign substances contained in water. Furthermore, since there is little change in water absorption capacity due to the water absorption-drying cycle, there is little deterioration over time of the ability to prevent the intrusion of water and foreign substances contained in water. In addition, since there is little change in water absorption capacity due to thermal changes, it is possible to sufficiently prevent water from entering even when used for outdoor piping.
以上のように、この発明の管継手は、管継手本体の内周
面に付着させる吸水剤として、澱粉等の有機物は使わず
、はぼ中１生のビニルアルコール／アクリル酸共重合体
を主成分とした高吸水性ポリマを用いたため、管継手本
体が１Ｎ蝕して錆を発生することが少ないという効果が
ある。As described above, the pipe fitting of the present invention does not use organic substances such as starch as a water-absorbing agent attached to the inner circumferential surface of the pipe fitting body, but instead uses a raw vinyl alcohol/acrylic acid copolymer as the main material. Since a super absorbent polymer is used as a component, there is an effect that the pipe joint body is less likely to be corroded by 1N and rust will occur.
第１図および第２図はこの発明の一実施例のカップリン
グの側面図および断面図、第３図は実施例で１史用した
高吸水性ポリマの吸水倍率と吸水時間の特性図、第４図
は同じく吸水倍率と加熱時間の特性図である。
１・・・カップリング本体、２・・・高吸水性ポリマ第
１図 第２図
吸水時開（分）
第３図
加黙吟ＭＩ（時間）
第４図Figures 1 and 2 are a side view and a sectional view of a coupling according to an embodiment of the present invention, Figure 3 is a characteristic diagram of the water absorption capacity and water absorption time of the super absorbent polymer used in the embodiment, and Figure 4 is also a characteristic diagram of water absorption capacity and heating time. 1...Coupling body, 2...Super absorbent polymer Fig. 1 Fig. 2 Opening when water is absorbed (minutes) Fig. 3 Kamogin MI (time) Fig. 4
Claims (1)
重合体を主成分とする高吸水性ポリマを付着させた管継
手。A pipe fitting with a super absorbent polymer whose main component is vinyl alcohol/acrylic acid copolymer adhered to the inner circumferential surface of the main pipe fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57153186A JPS5941378A (en) | 1982-08-31 | 1982-08-31 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57153186A JPS5941378A (en) | 1982-08-31 | 1982-08-31 | Pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5941378A true JPS5941378A (en) | 1984-03-07 |
Family
ID=15556921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57153186A Pending JPS5941378A (en) | 1982-08-31 | 1982-08-31 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941378A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60196087U (en) * | 1984-06-01 | 1985-12-27 | 積水化学工業株式会社 | pipe fittings |
| US5501866A (en) * | 1990-12-02 | 1996-03-26 | Ito En, Ltd. | Product and method for inhibiting caffeine stimulation with theanine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825740A (en) * | 1971-08-07 | 1973-04-04 |
-
1982
- 1982-08-31 JP JP57153186A patent/JPS5941378A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825740A (en) * | 1971-08-07 | 1973-04-04 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60196087U (en) * | 1984-06-01 | 1985-12-27 | 積水化学工業株式会社 | pipe fittings |
| US5501866A (en) * | 1990-12-02 | 1996-03-26 | Ito En, Ltd. | Product and method for inhibiting caffeine stimulation with theanine |
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