JPH058943B2 - - Google Patents
Info
- Publication number
- JPH058943B2 JPH058943B2 JP62030094A JP3009487A JPH058943B2 JP H058943 B2 JPH058943 B2 JP H058943B2 JP 62030094 A JP62030094 A JP 62030094A JP 3009487 A JP3009487 A JP 3009487A JP H058943 B2 JPH058943 B2 JP H058943B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- waterproof
- water
- comparative example
- foamable composition
- 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
- 239000000203 mixture Substances 0.000 claims description 17
- 229920005862 polyol Polymers 0.000 claims description 12
- 150000003077 polyols Chemical class 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 4
- 239000005056 polyisocyanate Substances 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000005187 foaming Methods 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- IRTFYNWQADJCSC-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,5-undecafluoropentan-1-ol Chemical compound OC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F IRTFYNWQADJCSC-UHFFFAOYSA-N 0.000 description 1
- VGHSXKTVMPXHNG-UHFFFAOYSA-N 1,3-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC(N=C=O)=C1 VGHSXKTVMPXHNG-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229920002323 Silicone foam Polymers 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000013514 silicone foam Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電気ケーブル防水シール用発泡性組
成物に関する。更に詳しくは、それ自体の発泡圧
によりケーブルの間隙に充満し、水の侵入を防止
せしめる電気ケーブル防水シール用発泡性組成物
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a foamable composition for waterproof sealing of electrical cables. More specifically, the present invention relates to a foamable composition for waterproof sealing of electric cables, which fills gaps in cables due to its own foaming pressure and prevents water from entering.
電気コードおよび配管の集合体である電気ケー
ブルの防水シールは、従来塩化ビニル樹脂製テー
プをケーブル外周に巻き付けたり、あるいはエポ
キシ樹脂、シリコーンRTV（室温加硫型のシリコ
ーンゴム）などでケーブルの間隙を充填する方法
などによつて行われる。
Waterproof seals for electrical cables, which are a collection of electrical cords and piping, have traditionally been made by wrapping vinyl chloride resin tape around the outer circumference of the cable, or by sealing the gaps between the cables with epoxy resin, silicone RTV (room temperature vulcanizable silicone rubber), etc. This is done by a filling method, etc.
しかしながら、テープの巻き付けではケーブル
に間隙を生じ、そこから毛細管現象による水の侵
入を許容する。エポキシ樹脂を用いる方法では、
液だれがみられるばかりではなく、硬化樹脂その
ものが硬いため電気ケーブル装置時などの作業性
を低下させる。また、シリコーンRTVを用いる
方法では、硬化時間が一般に長く、液だれがみら
れ、特に加硫物自体引張強度などの物性の点で劣
つているので装置時などに破損し易くなる欠点が
みられる。更に、これらの充填方法では、シール
材が均一に充填されるためには、かなりの圧力を
必要とするので、必然的に装置が大型化するのを
避けることができない。 However, wrapping the cable creates gaps in the cable through which water can enter due to capillary action. In the method using epoxy resin,
Not only does dripping occur, but the cured resin itself is hard, reducing workability when installing electrical cables. In addition, in methods using silicone RTV, the curing time is generally long, dripping is observed, and the vulcanizate itself is inferior in physical properties such as tensile strength, making it more likely to break during equipment use. . Furthermore, these filling methods require a considerable amount of pressure in order to uniformly fill the sealing material, which inevitably increases the size of the apparatus.
そこで、本発明者は、かかる問題点をもたらす
ことなく、ケーブルの間隙部を充填させるための
手段を求めて種々検討の結果、それ自体の発泡圧
により、ケーブル部の間隙に充満し、水の侵入を
防止せしめる発泡性組成物を用いることにより、
かかる課題が効果的に解決されることを見出し
た。
Therefore, the inventor of the present invention searched for a means for filling the gap in the cable without causing such problems, and as a result of various studies, the inventor found that the bubble fills the gap in the cable due to its own foaming pressure, and the water fills the gap in the cable. By using a foaming composition that prevents intrusion,
It has been found that this problem can be effectively solved.
従つて、本発明は電気ケーブル防水シール用発
泡性組成物に係り、この発泡性組成物は、ポリエ
ーテルポリオールまたはポリカーボネートポリオ
ール、ポリイソシアネート、フツ素系界面活性剤
および水を含有してなる。
Accordingly, the present invention relates to a foamable composition for waterproof sealing of electric cables, which foamable composition contains a polyether polyol or a polycarbonate polyol, a polyisocyanate, a fluorosurfactant, and water.
ポリエーテルポリオールまたはポリカーボネー
トポリオールとしては、公知のポリオールであつ
て、ヒドロキシ当量約500〜1200のものが一般に
用いられる。また、ポリイソシアネートとして
は、一般にトリレンジイソシアネート、ｍ−フエ
ニレンジイソシアネートなどのジイソシアネート
が、ポリオール100重量部当り約50〜110重量部の
割合で用いられる。また、発泡剤としての水は、
ポリオール100重量部当り約２〜５重量部の割合
で用いられる。組成物中には、フツ素系の界面活
性剤が更に添加され、このような界面活性剤の添
加は、それの撥水効果により防水シール性をなお
一層発揮させる。 As the polyether polyol or polycarbonate polyol, known polyols having a hydroxy equivalent of about 500 to 1,200 are generally used. Further, as the polyisocyanate, diisocyanates such as tolylene diisocyanate and m-phenylene diisocyanate are generally used in a proportion of about 50 to 110 parts by weight per 100 parts by weight of polyol. In addition, water as a blowing agent is
It is used in a proportion of about 2 to 5 parts by weight per 100 parts by weight of polyol. A fluorine-based surfactant is further added to the composition, and the addition of such a surfactant further enhances the waterproof sealing property due to its water-repellent effect.
フツ素系界面活性剤としては、次の一般式で示
されるような非イオン系のものが用いられる。 As the fluorine-containing surfactant, a nonionic surfactant represented by the following general formula is used.
Rf OH
Rf BN（CnH2oＯ）mH
Rf：C5〜C10のフルオロアルキル基
Ｂ：CO，SO2
ｎ：２〜３
これらの界面活性剤は、好ましくはポリオール
100重量部当り約1.5〜８重量部の割合で用いられ
る。 Rf OH Rf BN( CnH2oO )mH Rf: C5 - C10 fluoroalkyl group B: CO, SO2 n: 2-3 These surfactants are preferably polyols.
It is used in a proportion of about 1.5 to 8 parts by weight per 100 parts by weight.
これらの各成分以外に、ポリオール100重量部
に対して、約１〜５重量部の硬質、半硬質整泡
剤、約0.01〜0.5重量部の触媒（ジブチル錫ジラ
ウレート、錫オクトエート、トリエチレンジアミ
ンなど）が、発泡性組成物中に適宜配合されて用
いられる。 In addition to these components, about 1 to 5 parts by weight of a rigid or semi-rigid foam stabilizer, and about 0.01 to 0.5 parts by weight of a catalyst (dibutyltin dilaurate, tin octoate, triethylene diamine, etc.) per 100 parts by weight of the polyol. is used by being appropriately blended into the foamable composition.
発泡性組成物のケーブルへの適用は、ポリイソ
シアネートおよびこれ以外の各成分混合物を高速
攪拌混合し、これをシール部に注入し、室温条件
下に約15〜20分間程度放置して発泡ポリウレタン
化させるワンシヨツト法などによつて一般に行わ
れる。具体的には、２つ割円筒型などを用い、そ
の一方の型内にケーブル群を拡げ、その上に上記
攪拌混合液を注入し、他方の型をそこにかぶせて
室温に放置した後、型を離型させる方法などが用
いられる。 To apply the foamable composition to the cable, mix the polyisocyanate and other components with high speed stirring, inject this into the sealing part, and leave it at room temperature for about 15 to 20 minutes to form foamed polyurethane. This is generally done by the one-shot method, etc. Specifically, using a split cylindrical mold or the like, spread the cable group in one mold, pour the above-mentioned stirring mixture onto it, cover it with the other mold, and leave it at room temperature. A method of releasing the mold is used.
本発明に係る発泡性組成物を電気ケーブルに適
用した場合、次のような効果が奏せられる。
When the foamable composition according to the present invention is applied to electric cables, the following effects can be achieved.
(1) 材料自体の発泡圧を適切に利用して、ケーブ
ル内の間隙を水密性をもつて充填することがで
きる。(1) By appropriately utilizing the foaming pressure of the material itself, gaps within the cable can be filled with watertightness.
(2) 硬化物は発泡ポリウレタンエラストマーを形
成するので、柔軟性があり、装置性が良いばか
りではなく、軽量化も達成される。(2) Since the cured product forms a foamed polyurethane elastomer, it is not only flexible and easy to install, but also lightweight.
(3) フツ素系界面活性剤が添加されているため、
材料自体に耐水撥水性が付与され、防水性能を
効果的に向上させることができる。(3) Because fluorine-based surfactant is added,
Water resistance and water repellency are imparted to the material itself, making it possible to effectively improve waterproof performance.
(4) 室温における硬化時間を短縮することができ
る。(4) Curing time at room temperature can be shortened.
従つて、この発泡性組成物は、このような特徴
により、自動車、航空機、通信機器分野などの電
気、電子部品のケーブルの防水シールに有効に使
用することができる。 Therefore, due to these characteristics, this foamable composition can be effectively used for waterproof sealing of cables of electrical and electronic components in the fields of automobiles, aircraft, communication equipment, and the like.
次に、実施例について本発明を説明する。 Next, the present invention will be explained with reference to examples.
比較例 １
３官能性ポリエーテルポリオール（Mw＝
3000）100gに、錫オクトエート0.4g、トリエチレ
ンジアミン0.17g、シリコーン整泡剤（UCC社製
品Ｌ−520）4.0gおよび水3.65gを加え、混合物を
調製する。Comparative Example 1 Trifunctional polyether polyol (Mw=
3000), add 0.4 g of tin octoate, 0.17 g of triethylenediamine, 4.0 g of silicone foam stabilizer (UCC product L-520) and 3.65 g of water to prepare a mixture.
上記混合物およびトリレンジイソシアネート
（2.4体／2.6体＝80：20）47.5gを高速攪拌機で混
入し、ケーブルの防水シール部を形成させる部分
に注入し、室温下に15分間放置して硬化させ、用
いられた２つ割円筒型から離型させた。 Mix the above mixture and 47.5 g of tolylene diisocyanate (2.4 units/2.6 units = 80:20) using a high-speed stirrer, inject it into the part of the cable where the waterproof seal is to be formed, and leave it at room temperature for 15 minutes to harden. The mold was released from the halved cylindrical mold used.
実施例
比較例１において、混合物中にフツ素系界面活
性剤パーフルオロペンタノール2.0gが添加され、
硬化時間が14分間に変更された。Example In Comparative Example 1, 2.0 g of fluorosurfactant perfluoropentanol was added to the mixture,
Curing time has been changed to 14 minutes.
比較例 ２
ケーブルの防水シール部を形成させる部分にシ
リコーンRTV（信越化学製品KE10）を注入し、
室温下に60分間放置して、用いられた２つ割円筒
型から離型させた。Comparative Example 2 Silicone RTV (Shin-Etsu Chemical KE10) was injected into the part of the cable where the waterproof seal was to be formed.
It was left at room temperature for 60 minutes and released from the two-part cylindrical mold used.
比較例 ３
ケーブルの外周に、塩化ビニル樹脂製テープを
巻き付けた。Comparative Example 3 A vinyl chloride resin tape was wrapped around the outer circumference of the cable.
以上の実施例および各比較例で防水シールされ
た各ケーブルについて、次のようにして漏れ試験
を行なつた。密閉された容器の壁に一定長さのケ
ーブルの防水シール部（グロメツト）を貫通して
取り付け、容器外側のケーブル切断面をシリコー
ンRTVでシールする。この密閉容器内に、ミニ
コンプレツサーを用いて0.05Kg／cm2の空気圧をか
け、20℃で24時間経過後のゲージ圧を測定した。
得られた結果は、次の表に示される。 A leakage test was conducted on each of the waterproof sealed cables in the above Examples and Comparative Examples as follows. A fixed length of cable is attached to the wall of a sealed container by passing through a waterproof seal (grommet), and the cut surface of the cable outside the container is sealed with silicone RTV. An air pressure of 0.05 Kg/cm 2 was applied to the airtight container using a mini compressor, and the gauge pressure was measured after 24 hours at 20°C.
The results obtained are shown in the following table.
表
例 ゲージ圧（Kg／cm2）
比較例１ 0.0
実施例１ 0.05
比較例２ 0.032
比較例３ 0.0
実施例の防水シールケーブルについて、85℃、
85％RH、500時間または−30℃、500時間の耐久
試験を行ない、その後同様の漏れ試験を行なつた
が、ゲージ圧は0.05Kg／cm2の値を示し、漏れはみ
られなかつた。 Table Example Gauge pressure (Kg/cm 2 ) Comparative example 1 0.0 Example 1 0.05 Comparative example 2 0.032 Comparative example 3 0.0 Regarding the waterproof sealed cable of the example, 85℃,
Durability tests were conducted at 85% RH for 500 hours or -30°C for 500 hours, and then a similar leakage test was conducted, but the gauge pressure showed a value of 0.05Kg/cm 2 and no leakage was observed.
また、防水シール部を観察すると、比較例１の
ものはケーブル中のコードが１本露出して見え、
また比較例２のものはシール部に一部間隙がみら
れるのに対し、実施例のものはいずれも良好なシ
ール状態を示していた。 In addition, when observing the waterproof seal part, one cord in the cable of Comparative Example 1 appears to be exposed.
Further, in Comparative Example 2, some gaps were observed in the seal portion, whereas in all Examples, a good sealing condition was observed.
Claims (1)
ートポリオール、ポリイソシアネート、フツ素系
界面活性剤および水を含有してなる電気ケーブル
防水シール用の常温硬化型発泡性組成物。1. A cold-curing foamable composition for waterproof sealing of electric cables, which contains a polyether polyol or a polycarbonate polyol, a polyisocyanate, a fluorine-containing surfactant, and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62030094A JPS63196618A (en) | 1987-02-10 | 1987-02-10 | Expandable composition for waterproof sealing of electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62030094A JPS63196618A (en) | 1987-02-10 | 1987-02-10 | Expandable composition for waterproof sealing of electric cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63196618A JPS63196618A (en) | 1988-08-15 |
| JPH058943B2 true JPH058943B2 (en) | 1993-02-03 |
Family
ID=12294196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62030094A Granted JPS63196618A (en) | 1987-02-10 | 1987-02-10 | Expandable composition for waterproof sealing of electric cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63196618A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679681A1 (en) * | 1994-04-27 | 1995-11-02 | Matsushita Electric Industrial Co., Ltd. | Heat insulating foamed material and method for manufacturing the same |
| JP4666898B2 (en) * | 2003-08-09 | 2011-04-06 | 雪ヶ谷化学工業株式会社 | Polyurethane foam and method for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2847386A1 (en) * | 1978-10-30 | 1980-05-08 | Siemens Ag | Cellular polyurethane filler for longitudinal sealing of cable - of electrical or optical communications type without reducing flexibility |
| JPS55104330A (en) * | 1979-02-02 | 1980-08-09 | Nhk Spring Co Ltd | Production of polyurethane foam sealing material |
-
1987
- 1987-02-10 JP JP62030094A patent/JPS63196618A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2847386A1 (en) * | 1978-10-30 | 1980-05-08 | Siemens Ag | Cellular polyurethane filler for longitudinal sealing of cable - of electrical or optical communications type without reducing flexibility |
| JPS55104330A (en) * | 1979-02-02 | 1980-08-09 | Nhk Spring Co Ltd | Production of polyurethane foam sealing material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63196618A (en) | 1988-08-15 |
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|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
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