JPH03285216A - Watertight vinyl insulated wire - Google Patents
Watertight vinyl insulated wireInfo
- Publication number
- JPH03285216A JPH03285216A JP2087877A JP8787790A JPH03285216A JP H03285216 A JPH03285216 A JP H03285216A JP 2087877 A JP2087877 A JP 2087877A JP 8787790 A JP8787790 A JP 8787790A JP H03285216 A JPH03285216 A JP H03285216A
- Authority
- JP
- Japan
- Prior art keywords
- pvc
- watertight
- ethylene
- compound
- vinyl chloride
- 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
- 229920002554 vinyl polymer Polymers 0.000 title claims abstract description 14
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 title claims description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 34
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 30
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 229920005670 poly(ethylene-vinyl chloride) Polymers 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 9
- 229920005601 base polymer Polymers 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract 2
- 229920006027 ternary co-polymer Polymers 0.000 abstract 2
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 13
- 238000009413 insulation Methods 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010008631 Cholera Diseases 0.000 description 1
- 101150096839 Fcmr gene Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、架空配を線に用いられろ水密ビニル絶縁電線
に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a watertight vinyl insulated electric wire used for overhead wiring.
〈従来の技術〉
従来、架空配電線にあっては、例えばポリエチレン絶縁
電線、架橋ポリエチレン絶縁電線、ポリ塩化ビニル絶縁
電線等があり、張力や浸入水分等の相乗効果により、応
力腐蝕が生し易く、断線することがあるため、電線内へ
の水分の浸入を防止するべく、水密コンパウンドを用い
て対処している。<Conventional technology> Traditionally, overhead distribution lines include polyethylene insulated wires, cross-linked polyethylene insulated wires, polyvinyl chloride insulated wires, etc., and stress corrosion is likely to occur due to the synergistic effects of tension and moisture infiltration. Since wires may break, a watertight compound is used to prevent moisture from entering the wires.
このような水密性の絶縁電線にあっては、次のような特
性が要求される。Such watertight insulated wires are required to have the following characteristics.
■先ず、水密コンパウンドと電線導体との密着性が良好
で、導体側への水分の浸入が十分に抑えられること。■First, the adhesion between the watertight compound and the wire conductor must be good, and the infiltration of moisture into the conductor side must be sufficiently suppressed.
■一方、口出し時等の作業性を考慮して、水密コンパウ
ンドが塩化ビニル（ＰＶＣ）等の絶縁体ともよく密着し
、皮剥ぎの際、水密コンパウンドが導体側に残留しない
こと。■On the other hand, in consideration of workability during opening, the watertight compound should adhere well to insulators such as vinyl chloride (PVC), and the watertight compound should not remain on the conductor side when peeling.
従来は、この種の水密コンパウンドとして、エチレン酢
酸ビニル共重合体（ＥＶＡ） 、エチレン−アクリル酸
エチル共重合体（ＥＥＡ）等が使用されている。Conventionally, ethylene vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), etc. have been used as this type of watertight compound.
〈発明が解決しようとする課題〉
ところが、この水密コンパウンドの場合、上述したよう
に水密性を向上させるには導体との密着性を向上させる
必要がある一方、皮剥ぎ性については、逆の効果が必要
とされるという、相反する要求が望まれる。<Problem to be solved by the invention> However, in the case of this watertight compound, as mentioned above, in order to improve the watertightness, it is necessary to improve the adhesion with the conductor, but with regard to peelability, it has the opposite effect. Conflicting demands are desired.
そこで、従来は、水密コンパウンドの持つ接着性にのみ
着目し、水密コンパウンドの相対的な接着力を、導体に
対するそれよりも絶縁体の方を太き（するというような
微妙なバランスのもとに行っている。Therefore, in the past, we focused only on the adhesive properties of watertight compounds, and determined the relative adhesive strength of watertight compounds based on a delicate balance such as making the insulators thicker than the conductors. Is going.
従って、どうしても、水密コンパウンドの持つ接着性の
みの効果だけでは、限界があり、上記０〜０項の各要求
を十分に満足することはできなかった。Therefore, the adhesive effect of the watertight compound has a limit, and it has not been possible to satisfactorily satisfy each of the requirements in items 0 to 0 above.
本発明は、このような従来の実情に鑑みてなされたもの
で、その目的とするところは、良好な水密性を確保する
ため、従来のコンパウンドの接着性のみに顧るのではな
く、コンパウンドの弾性にも着目し、この弾性による、
導体を抑える力（圧縮力）をも利用せんとするものであ
る。The present invention was made in view of the above-mentioned conventional circumstances, and its purpose is to improve the adhesion of the compound, rather than focusing only on the adhesive properties of the conventional compound, in order to ensure good watertightness. We also focused on elasticity, and due to this elasticity,
It also attempts to utilize the force that suppresses the conductor (compressive force).
〈課題を解決するための手段及びその作用〉か−る本発
明の特徴とする点は、ポリ塩化ビニル（ＰＶＣ）、エチ
レン−塩化ビニル共重合体（Ｅ−ＰＶＣ）、エチレン酢
酸ビニル−塩化ビニル共重合体（ＥＶＡ−ＰＶＣ） 、
エチレン−塩化ビニル−接着成分三元共重合体（Ｅ−Ｐ
ＶＣＧ）またはこれらの混合物からなり、その体積弾性
率が２×１０２ 〜３×１０４ ｋｇｆ／ｃｍ”の範囲
にある混和物を水密コンパウンドとした水密ビニル絶縁
電線にある。<Means for Solving the Problems and Their Effects> The characteristics of the present invention are that polyvinyl chloride (PVC), ethylene-vinyl chloride copolymer (E-PVC), ethylene vinyl acetate-vinyl chloride Copolymer (EVA-PVC),
Ethylene-vinyl chloride-adhesive component terpolymer (E-P
VCG) or a mixture thereof, the watertight vinyl insulated wire having a bulk modulus of elasticity in the range of 2×10 2 to 3×10 4 kgf/cm” as a watertight compound.
本発明では、Ｐ Ｖ Ｃ絶縁体が使用されるビニル絶縁
電線において、水密コンパウンドのベースポリマーとし
５て、Ｆ’ Ｖ Ｃ絶縁体と同一または同種のＰＶＣ成
分が含有される、ＰＶＣ，Ｅ−ＰＶＣｌＥ ＶＡ、 −
Ｐ Ｖ Ｃ，、Ｅ −Ｐ Ｖ Ｃ−Ｇマタハコレラ（Ｄ
混合物が用いられているため、ＰＶＣ絶縁体と良好な密
着性が得られる。ここで、用いられるＥ−ＰＶＣ−Ｇの
接着成分としては、例えばグリシジルメタクリレートや
不飽和ポリエステル等が使用される。In the present invention, in a vinyl insulated wire in which a PVC insulator is used, PVC, E-PVClE, which contains the same or similar PVC component as the F'VC insulator as the base polymer of the watertight compound. VA, -
P V C,, E -P V C-G Mataha cholera (D
Since a mixture is used, good adhesion with the PVC insulation is obtained. Here, as the adhesive component of the E-PVC-G used, for example, glycidyl methacrylate, unsaturated polyester, etc. are used.
そして５．勿論、従来と同様、このＰＶＣ絶縁体との接
着力は、電線導体のそれより太き（しである。And 5. Of course, as in the past, the adhesive force with this PVC insulator is stronger than that with the electric wire conductor.
このような水密コンパウンドにおいて、その体積弾性率
の範囲を、２Ｘ１０２〜３×１０４ ｋｇｆ／ｃｍ”
としてのは、次の理由による。In such a watertight compound, the bulk modulus range is 2×102 to 3×104 kgf/cm”
The reason for this is as follows.
つまり、本発明者等の行った試験により、水密コンパウ
ンドの体積弾性率を変えながらケーブルの水密性と皮剥
ぎ性との関係を調べたところ、第１図〜第２図に示した
グラフを得た。In other words, through tests conducted by the present inventors, the relationship between the watertightness and peelability of the cable was investigated while changing the bulk modulus of the watertight compound, and the graphs shown in Figures 1 and 2 were obtained. Ta.
先ず、第１図のグラフからすると、水密性は体積弾性率
が小さいとき、すなわち圧縮力が強いとき、良好な結果
が得られ、逆に、皮剥ぎ性では体積弾性率が大きいと良
好な結果が得られた。First, from the graph in Figure 1, good results are obtained for watertightness when the bulk modulus is small, that is, when the compressive force is strong, and conversely, good results are obtained for peelability when the bulk modulus is large. was gotten.
そこで、さらにこれら両者のバランスの取れたより具体
的な数値を求めたところ、体積弾性率の下限は２×１０
２ ｋｇｆ／ｃｍ！近辺で、また上限は３×１０４ ｋ
ｇ ｆ／ｃｍ”近辺であることが分かった。Therefore, we further determined a more specific numerical value that balanced these two, and found that the lower limit of the bulk modulus was 2 × 10
2kgf/cm! In the vicinity, the upper limit is 3×104k
It was found that it was around "g f/cm".
これらの数値の範囲内において、ケーブル導体は、水密
コンパウンドから、接着力とは異なった別の力である抑
える力（コンパウンド同士の引張力から得られる圧縮力
）が与えられ、高い水密性が得られる。つまり、コンパ
ウンド自体と導体金属との接触面で生じる接着力が同一
であっても、コンパウンドの体積弾性率が小さく、圧縮
力が強ければ、全体として、より大きな水密性が得られ
るのである。Within these numerical ranges, the cable conductor receives a restraining force (compressive force obtained from the tensile force between the compounds), which is a force different from adhesive force, from the watertight compound, resulting in high watertightness. It will be done. In other words, even if the adhesive force generated at the contact surface between the compound itself and the conductive metal is the same, if the bulk modulus of the compound is small and the compressive force is strong, greater watertightness will be obtained overall.
従って、本水密コンパウンドの場合、従来と同様に、電
線導体およびＰＶＣ絶縁体の両者に対して良好な接着が
得られると同時に、このコンパウンド自体の最適な体積
弾性率の設定により、より一層水密性および皮剥ぎ性が
増強される。Therefore, in the case of this watertight compound, it is possible to obtain good adhesion to both electric wire conductors and PVC insulators as before, and at the same time, by setting the optimal bulk modulus of this compound itself, it is even more watertight. and enhanced peelability.
また、接着力ゆのものは、従来と同様に設定しであるた
め、皮剥ぎの際には、強いＰＶＣ絶縁体との接着力によ
り、水密コンパウンドは電線導体側に残留することなく
、ＰｖＣ絶縁体と接着した状態で綺麗に剥離される。In addition, since the adhesive strength is set the same as before, when stripping the PVC insulation, the watertight compound does not remain on the wire conductor side due to its strong adhesive strength with the PVC insulation. It peels off cleanly while remaining adhered to the body.
本発明で使用するＰＶＣとしては例えば三井東圧化学工
業■製のビニクロン、理研ビニル工業■製のビニルコン
パウンド等、Ｅ−ＰＶＡとしては例えばトーソ■社製の
リューロンＥ等、ＥＶＡ−ＰＶＣとしては例えば種水化
学工業■製のＰＶＣ−ＴＧ、日本ゼオン■製のグラフト
マー、Ｅ−ＰＶ’ Ｃ−Ｇとしては種水化学工業■製の
トセエースＡＰ等が挙げられる。Examples of PVC used in the present invention include Viniclon manufactured by Mitsui Toatsu Chemical Industries ■, vinyl compound manufactured by Riken Vinyl Industries ■, etc., examples of E-PVA such as Luron E manufactured by Toso ■, and examples of EVA-PVC such as PVC-TG manufactured by Tanemizu Chemical Industry ■, graftomer manufactured by Nippon Zeon ■, and E-PV' CG include Toce Ace AP manufactured by Tanemizu Chemical Industry ■.
なお、上記水密コンパウンドには、通常ＰＶＣに添加さ
れる他の添加剤、例えば可塑剤、安定剤、老化防止剤等
を必要に応じて適量添加することができる。In addition, appropriate amounts of other additives normally added to PVC, such as plasticizers, stabilizers, anti-aging agents, etc., can be added to the watertight compound as required.
〈実施例〉
第１表に示した配合による種々の水密コンパウンドを用
いて、導体断面積６０ｍｒｎ”の水密ビニル絶縁電線を
製造した（実施例１〜３）。<Example> Watertight vinyl insulated wires with a conductor cross-sectional area of 60 mrn'' were manufactured using various watertight compounds having the formulations shown in Table 1 (Examples 1 to 3).
また、比較のため、本発明条件を欠く水密コンパウンド
を用いた同種の水密ビニル絶縁電線を製造した（比較例
１〜２）。For comparison, similar watertight vinyl insulated wires were manufactured using a watertight compound lacking the conditions of the present invention (Comparative Examples 1 and 2).
そして、これらの各電線について、水密性、皮剥ぎ性、
絶縁体劣化の各特性試験を行い、その特性を調べた。こ
の試験結果も上記第１表に併記した。For each of these electric wires, check the watertightness, peelability,
We conducted various characteristic tests for insulation deterioration and investigated its characteristics. The test results are also listed in Table 1 above.
なお、上記各特性試験は、以下の方法により行った。Note that each of the above characteristic tests was conducted by the following method.
（１）水密性試験
長さ５０ｃｍの電線の片端に１．０Ｋｇ／ｃｍ”の水圧
を２４時間加え、他端からの漏水の有無を調べた。(1) Watertightness test A water pressure of 1.0 kg/cm'' was applied to one end of a 50 cm long electric wire for 24 hours to check for water leakage from the other end.
（２）皮剥ぎ性試験
電線の絶縁体にナイフ等で切れ目を入れ、巾２５ｍｍで
円周方向の皮剥ぎを行い、水密コンパンウドの導体上へ
の残留の有無を調べた。(2) Stripping property test A cut was made in the insulator of the electric wire with a knife or the like, and the strip was peeled in the circumferential direction to a width of 25 mm, and the presence or absence of watertight compound compound remaining on the conductor was examined.
（３）絶縁体劣化試験
電線を１００℃の空気中に１ケ月間放置し、絶縁体劣化
の有無を調べた。(3) Insulator deterioration test The electric wire was left in air at 100° C. for one month, and the presence or absence of insulation deterioration was examined.
上記第１表から、本発明に係る実施別品の場合、水密性
、皮剥ぎ性および絶縁体劣化のすべての点で良好である
のに対して、本発明条件を欠く比較別品では、いずれか
の点で問題があることが分る。From Table 1 above, it can be seen that the implemented product according to the present invention is good in all aspects of watertightness, peelability, and insulation deterioration, whereas the comparative product lacking the conditions of the present invention is It turns out that there is a problem in this respect.
〈発明の効果〉
以上の説明から明らかなように本発明によれば、次のよ
うな優れた効果を有する水密ビニル絶縁電線が得られる
。<Effects of the Invention> As is clear from the above description, according to the present invention, a watertight vinyl insulated electric wire having the following excellent effects can be obtained.
（１）ＰＶＣ，Ｅ−ＰＶＣＳＥＶＡ−ＰＶＣ，Ｅ−ＰＶ
Ｃ−Ｇまたはこれらの混合物のように、ＰＶＣ絶縁体と
同等あるいは類似した性質を有する樹脂をベースポリマ
ーとしているため、ＰＶＣ絶縁体に対する水密コンパウ
ンドの密着性は極めて良く、良好な皮剥ぎ性（口出し性
）が得られる。(1) PVC, E-PVCSEVA-PVC, E-PV
Since the base polymer is a resin with properties equivalent to or similar to PVC insulation, such as C-G or a mixture thereof, the adhesion of the watertight compound to the PVC insulation is extremely good, and it has good peelability (peelability). ) can be obtained.
（２）また、ペースポリマーの体積弾性率を２×１０”
〜３ｘｉｏ’ ｋｇｆ／ｃｍ”の範囲に設定しである
ため、導体等に対して、最適の圧縮力が得られ、この力
による水密性の増強が望める。(2) Also, the bulk modulus of the pace polymer is 2×10”
Since the compressive force is set in the range of ~3 xio'kgf/cm'', an optimum compressive force can be obtained for the conductor, etc., and it is expected that watertightness will be enhanced by this force.
【図面の簡単な説明】
第１図は水密コンパウンドの体積弾性率と水密性ととの
関係を示したグラフ、第２図は水密コンパウンドの体積
弾性率と皮剥ぎ性との関係を示したグラフである。[Brief explanation of the drawings] Figure 1 is a graph showing the relationship between the bulk modulus of watertight compound and watertightness, and Figure 2 is a graph showing the relationship between the bulk modulus of watertight compound and peelability. It is.
Claims (1)
合体（Ｅ−ＰＶＣ）、エチレン酢酸ビニル−塩化ビニル
共重合体（ＥＶＡ−ＰＶＣ）、エチレン−塩化ビニル−
接着成分三元共重合体（Ｅ−ＰＶＣ−Ｇ）またはこれら
の混合物からなり、その体積弾性率が２×１０＾２〜３
×１０＾４ｋｇｆ・／ｃｍ＾２の範囲にある混和物を水
密コンパウンドとした水密ビニル絶縁電線。Polyvinyl chloride (PVC), ethylene-vinyl chloride copolymer (E-PVC), ethylene-vinyl acetate-vinyl chloride copolymer (EVA-PVC), ethylene-vinyl chloride-
The adhesive component is made of a terpolymer (E-PVC-G) or a mixture thereof, and its bulk modulus is 2 x 10^2~3
A watertight vinyl insulated wire made of a watertight compound containing a mixture in the range of ×10^4kgf/cm^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2087877A JPH03285216A (en) | 1990-04-02 | 1990-04-02 | Watertight vinyl insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2087877A JPH03285216A (en) | 1990-04-02 | 1990-04-02 | Watertight vinyl insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03285216A true JPH03285216A (en) | 1991-12-16 |
Family
ID=13927094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2087877A Pending JPH03285216A (en) | 1990-04-02 | 1990-04-02 | Watertight vinyl insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03285216A (en) |
-
1990
- 1990-04-02 JP JP2087877A patent/JPH03285216A/en active Pending
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