JP3083151B2 - Heat shrinkable seal ring - Google Patents
Heat shrinkable seal ringInfo
- Publication number
- JP3083151B2 JP3083151B2 JP02320023A JP32002390A JP3083151B2 JP 3083151 B2 JP3083151 B2 JP 3083151B2 JP 02320023 A JP02320023 A JP 02320023A JP 32002390 A JP32002390 A JP 32002390A JP 3083151 B2 JP3083151 B2 JP 3083151B2
- Authority
- JP
- Japan
- Prior art keywords
- seal ring
- weight
- parts
- water
- heat
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joints With Pressure Members (AREA)
- Joints With Sleeves (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、特に、ブロー成形樹脂パイプの接続部に被
せて用いる熱収縮性リングに関するもので、自動車その
他産業用各種機器に使用応される吸引、加圧空気や冷却
水等の輸送パイプのシールを完全にすることを目的に開
発したものである。The present invention particularly relates to a heat-shrinkable ring used to cover a connection portion of a blow-molded resin pipe, and a seal for a transport pipe for suction, pressurized air, cooling water, and the like used for automobiles and various other industrial equipment. It has been developed with the aim of perfecting.
パイプとパイプの接合部等において、一般に水のシー
ルはシール表面の平面度に影響され、シール部分の表面
が悪い場合、シール性がよくない。ブロー成形樹脂パイ
プの場合、シール効果を高めるために研磨を行うと、シ
ール性は良好になるが、コストがかかる難点がある。 自動車、産業用機器等の冷却水ホースなどで、金属か
ら樹脂への材料変換が進んでいる分野においては、パイ
プ相互の接続部のシールを容易かつ、完全にするためシ
ールリングが用いられる。In general, at a joint between pipes and the like, the seal of water is affected by the flatness of the seal surface, and when the surface of the seal portion is poor, the sealability is poor. In the case of a blow-molded resin pipe, if polishing is performed to enhance the sealing effect, the sealing performance is improved, but there is a disadvantage that the cost is high. BACKGROUND ART In a field in which material conversion from metal to resin is progressing, such as in a cooling water hose of an automobile or industrial equipment, a seal ring is used to easily and completely seal a joint between pipes.
従来のシールリングは長期の使用によって漏れる場合
があり、本発明はこの点を改良し、シール性良好かつ、
長期の使用にも耐え得るシールリングを提供しようとす
るものである。The conventional seal ring may leak due to long-term use, and the present invention has improved this point,
An object of the present invention is to provide a seal ring that can withstand long-term use.
そこで、これらの点を種々検討した結果、パイプとパ
イプを結合する際に用いるシールリングであって、ゴム
弾性高分子100重量部に対して結晶性高分子10〜60重量
部および吸水性高分子５〜200重量部を混練した組成物
をリング状に成形してなる熱収縮性シールリング。ゴム
弾性高分子60重量部および吸水性高分子５〜200重量部
を混練した組成物をリング状に成形した構造の熱収縮性
に加えて水膨潤性のシールリングを開発したのである。 ここにいうゴム弾性高分子とは、ゴム状弾性を有する
物質でNR、IR、BR、SBR、IIR、EPM、CR等があげられ
る。この中より単独又は組合せで使用でき、高温使用の
場合は、EPMが適している。 また、結晶性高分子とは、分子が規則的に配列されて
いる高分子であって、ポリエチレン、ポリプロピレン、
ポリアミド、ポリアセタール、ポリ塩化ビニリデン、ポ
リ弗化エチレン等があるが、融解温度からポリエチレン
が良く、配合部数は収縮率に関係し変化する。添加量は
組成比においてゴム弾性高分子100重量部に対して20〜5
0重量部が好ましい。 更に、吸水性高分子とは高吸水性ポリマー、澱粉系、
CMC系、ポリアクリル酸塩系、塩酸ビニル−アクリル酸
エステル共重合体ケン化物、酢酸ビニル−マレイン酸エ
ステル共重合体ケン化物、イソブチレン−無水マレイン
酸共重合体、ポリアクリロニトリル系ポリエチレンオキ
サイド架橋物等があり、使用温度内にて熱硬化も軟化せ
ず、熱分解温度以内で選択使用する。例えば、100℃付
近のものへの使用はイソブチレン−無水マレイン酸共重
合体が望ましい。その添加量は、組成比において、ゴム
弾性高分子100重量部に対して５〜200重量部、より好ま
しくは50〜100重量部である。Therefore, as a result of various examinations of these points, a seal ring used when connecting pipes to pipes, wherein 10 to 60 parts by weight of a crystalline polymer and 100 parts by weight of a rubber elastic polymer and 10 A heat-shrinkable seal ring obtained by molding a composition obtained by kneading 5 to 200 parts by weight into a ring. A water-swellable seal ring was developed in addition to the heat-shrinkability of a structure obtained by kneading a composition obtained by kneading 60 parts by weight of a rubber elastic polymer and 5 to 200 parts by weight of a water-absorbing polymer. The rubber elastic polymer referred to here is a substance having rubber-like elasticity, such as NR, IR, BR, SBR, IIR, EPM, and CR. Among them, these can be used alone or in combination, and when used at a high temperature, EPM is suitable. Further, a crystalline polymer is a polymer in which molecules are regularly arranged, such as polyethylene, polypropylene,
Polyamide, polyacetal, polyvinylidene chloride, polyfluoroethylene and the like are available, but polyethylene is preferred from the melting temperature, and the number of blended parts varies depending on the shrinkage. The amount added is 20 to 5 per 100 parts by weight of the rubber elastic polymer in the composition ratio.
0 parts by weight is preferred. Furthermore, the superabsorbent polymer is a superabsorbent polymer, starch-based,
CMC type, polyacrylate type, saponified vinyl chloride-acrylate copolymer, saponified vinyl acetate-maleic acid ester copolymer, isobutylene-maleic anhydride copolymer, cross-linked polyacrylonitrile-based polyethylene oxide, etc. The thermosetting does not soften within the operating temperature, and it is selectively used within the thermal decomposition temperature. For example, for use at around 100 ° C., an isobutylene-maleic anhydride copolymer is desirable. The amount added is 5 to 200 parts by weight, more preferably 50 to 100 parts by weight, based on 100 parts by weight of the rubber elastic polymer in the composition ratio.
このような構造のシールリングは、ブロー成形物等の
シール面へ外挿して加熱すると、シール面へ収縮して密
着し、気密、水密性を発揮する。また、そのシールリン
グの外周へゴムホース等を外挿し、通水した場合、シー
ルリングが水で膨潤し、水又は含水液体ホースの継目シ
ールが完全に行われる。When a seal ring having such a structure is inserted into a seal surface of a blow molded product or the like and heated, the seal ring contracts and adheres to the seal surface, and exhibits airtightness and watertightness. Also, when a rubber hose or the like is extrapolated to the outer periphery of the seal ring and water is passed, the seal ring swells with water, and the seam of the water or water-containing liquid hose is completely sealed.
以下実施例によって本発明を更に詳細に説明する。 実施例１〜４ ゴム弾性高分子にEPM又はSBRを用い、結晶性高分子に
はエチレン高重合物で平均分子量22,000〜44,000、メル
トインデックス20、軟化点83℃の射出成形用グレードを
用いた。吸水性樹脂として、イソブチレン−無水マレイ
ン酸共重合樹脂（商品名KIゲル、（株）クラレ製）を用
いた。組成比は表１に示す。 膨潤率以外の数値はいずれも重量部 混練物は通常のゴム練り方法と同様な方法でバンバリ
ーミキサーを用いて混練した。ただし、結晶性高分子の
添加は軟化点以上まで昇温させ、混練した。次にロール
で冷却し、加硫剤を加え混練物を得た。 この混練物を管状に押出し加硫成形した後、軟化点以
上の温度（この場合130℃）で、管の内径を空気圧にて
２倍に拡大させ、次に急冷（25℃）し、チューブを得
た。この円筒形チューブを幅25mmにカットして熱収縮性
シールリング（２）とし、これを第１図にみられるよう
に、ブロー成形物（１）のシール面に挿入し、熱にて収
縮変形させて密着させた。次に熱収縮性シールリング
（２）上にゴムホース（３）外挿し、ワイヤークランプ
（４）にて固定した。 この状態でゴムホース（３）の端面を密封し、ブロー
成形物（１）の一端より水圧1.5Kg/cm2をかけたが、実
施例１〜４はいずれも漏れなかった。次に水圧を2Kg/cm
2に高めたところ、実施例１において僅かににじみを見
る程度で、実施例２〜４はいずれも漏水が認められなか
った。なお、表１中に水中での膨潤率を示した。 一方、上記同様のブロー成形物（１）に直接ゴムホー
ス（３）を挿入し、ワイヤークランプ（４）にて固定
し、一端より水圧をかけたが、喰切部バリのため0.1Kg/
cm2で漏れた。Hereinafter, the present invention will be described in more detail by way of examples. Examples 1 to 4 EPM or SBR was used as the rubber elastic polymer, and a high molecular weight ethylene polymer having an average molecular weight of 22,000 to 44,000, a melt index of 20, and a softening point of 83 ° C. was used as the crystalline polymer. An isobutylene-maleic anhydride copolymer resin (trade name: KI gel, manufactured by Kuraray Co., Ltd.) was used as the water absorbing resin. The composition ratio is shown in Table 1. The numerical values other than the swelling ratio were all parts by weight. The kneaded material was kneaded using a Banbury mixer in the same manner as in a usual rubber kneading method. However, when the crystalline polymer was added, the temperature was raised to above the softening point and kneaded. Next, the mixture was cooled with a roll, a vulcanizing agent was added, and a kneaded product was obtained. After extruding this vulcanized product into a tube and vulcanizing it, at a temperature above the softening point (130 ° C. in this case), the inside diameter of the tube is doubled by air pressure, then quenched (25 ° C.) Obtained. This cylindrical tube is cut into a width of 25 mm to form a heat-shrinkable seal ring (2), which is inserted into the sealing surface of the blow-molded product (1) as shown in FIG. And allowed to adhere. Next, the rubber hose (3) was extrapolated onto the heat-shrinkable seal ring (2) and fixed with a wire clamp (4). In this state, the end face of the rubber hose (3) was sealed, and a water pressure of 1.5 kg / cm 2 was applied from one end of the blow molded product (1), but none of Examples 1 to 4 leaked. Next, increase the water pressure to 2 kg / cm
When the value was increased to 2 , only slight bleeding was observed in Example 1, and no leak was observed in any of Examples 2 to 4. Table 1 shows the swelling ratio in water. On the other hand, a rubber hose (3) was directly inserted into the same blow molded product (1) as above, fixed with a wire clamp (4), and water pressure was applied from one end.
was leakage in cm 2.
以上の説明で明らかなように、本発明の熱収縮性シー
ルリングは、特に、ブロー成形樹脂パイプのようなシー
ル性の不良となりやすい接続部に用いても、加熱によっ
て熱収縮性を発揮し、更に水と接触して膨張するので、
自動車その他産業用各種機器に使用される吸引、加圧空
気や冷却水等の輸送パイプのシールを完全にすることが
でき漏水等のトラブルを皆無にする。 また、この熱収縮性シールリングの使用によって、ブ
ロー成形物の研磨等の手間を省くことができる。As is clear from the above description, the heat-shrinkable seal ring of the present invention exerts heat-shrinkability by heating, even when used for a connection portion that tends to have poor sealing properties, such as a blow-molded resin pipe, In addition, it expands in contact with water,
The seal of the transport pipe for suction, pressurized air, cooling water, etc. used in automobiles and various industrial equipment can be completely sealed, and there is no trouble such as water leakage. Further, by using the heat-shrinkable seal ring, it is possible to save trouble such as polishing of a blow molded product.
第１図は本発明の熱収縮性シールリングの使用状態を示
す断面図である。 （１）……ブロー成形物 （２）……熱収縮性シールリング （３）……ゴムホースFIG. 1 is a sectional view showing a use state of the heat-shrinkable seal ring of the present invention. (1) Blow molded product (2) Heat-shrinkable seal ring (3) Rubber hose
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 21/02 C09K 3/10 F16L 17/00 F16L 47/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) F16L 21/02 C09K 3/10 F16L 17/00 F16L 47/04
Claims (1)
ルリングであって、ゴム弾性高分子100重量部に対して
結晶性高分子10〜60重量部および吸水性高分子５〜200
重量部を混練した組成物をリング状に成形してなる熱収
縮性シールリング。1. A seal ring for use in joining pipes, wherein 10 to 60 parts by weight of a crystalline polymer and 5 to 200 parts by weight of a water-absorbing polymer per 100 parts by weight of a rubber elastic polymer.
A heat-shrinkable seal ring formed by molding a composition obtained by kneading parts by weight into a ring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02320023A JP3083151B2 (en) | 1990-11-21 | 1990-11-21 | Heat shrinkable seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02320023A JP3083151B2 (en) | 1990-11-21 | 1990-11-21 | Heat shrinkable seal ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04191586A JPH04191586A (en) | 1992-07-09 |
| JP3083151B2 true JP3083151B2 (en) | 2000-09-04 |
Family
ID=18116891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02320023A Expired - Fee Related JP3083151B2 (en) | 1990-11-21 | 1990-11-21 | Heat shrinkable seal ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3083151B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220003267A1 (en) * | 2018-11-19 | 2022-01-06 | Zf Friedrichshafen Ag | Seal device, electric machine, and drive device |
| US20220170547A1 (en) * | 2019-03-29 | 2022-06-02 | Abb Schweiz Ag | Joint, Motor, Industrial Robot And Method Of Installing A Seal |
-
1990
- 1990-11-21 JP JP02320023A patent/JP3083151B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220003267A1 (en) * | 2018-11-19 | 2022-01-06 | Zf Friedrichshafen Ag | Seal device, electric machine, and drive device |
| US11971103B2 (en) * | 2018-11-19 | 2024-04-30 | Zf Friedrichshafen Ag | Seal device, electric machine, and drive device |
| US20220170547A1 (en) * | 2019-03-29 | 2022-06-02 | Abb Schweiz Ag | Joint, Motor, Industrial Robot And Method Of Installing A Seal |
| US12270472B2 (en) * | 2019-03-29 | 2025-04-08 | Abb Schweiz Ag | Joint, motor, industrial robot and method of installing a seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04191586A (en) | 1992-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |