JPH09180549A - Water-tight admixture and water-tight electric wire using the water-tight admixture - Google Patents
Water-tight admixture and water-tight electric wire using the water-tight admixtureInfo
- Publication number
- JPH09180549A JPH09180549A JP7343344A JP34334495A JPH09180549A JP H09180549 A JPH09180549 A JP H09180549A JP 7343344 A JP7343344 A JP 7343344A JP 34334495 A JP34334495 A JP 34334495A JP H09180549 A JPH09180549 A JP H09180549A
- Authority
- JP
- Japan
- Prior art keywords
- water
- watertight
- tight
- maleic acid
- vinyl acetate
- 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.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 20
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 20
- VJFPVACZAZLCCM-UAIGNFCESA-N (z)-but-2-enedioic acid;chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C.OC(=O)\C=C/C(O)=O VJFPVACZAZLCCM-UAIGNFCESA-N 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 229920001897 terpolymer Polymers 0.000 claims description 20
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 abstract description 8
- 229920001169 thermoplastic Polymers 0.000 abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 8
- 239000003381 stabilizer Substances 0.000 abstract description 5
- 238000013329 compounding Methods 0.000 abstract description 3
- -1 phthalic acid ester Chemical class 0.000 abstract description 3
- 229920006027 ternary co-polymer Polymers 0.000 abstract 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 8
- 239000012212 insulator Substances 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- OAWKUMDOADACKG-UHFFFAOYSA-N chloroethene;ethenyl acetate;prop-2-enoic acid Chemical compound ClC=C.OC(=O)C=C.CC(=O)OC=C OAWKUMDOADACKG-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000003449 preventive effect Effects 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水密性、耐寒性、
機械的特性、密着性などの諸特性に優れた水密性混和物
およびこれを用いた水密電線に関する。TECHNICAL FIELD The present invention relates to watertightness, cold resistance,
The present invention relates to a watertight mixture excellent in various properties such as mechanical properties and adhesion and a watertight electric wire using the same.
【０００２】[0002]
【従来の技術】従来より、架空送配電線や海底電線など
においては、水の浸入による導体素線の酸化や腐食など
を防止するため、全長にわたり素線間間隙やその外周
に、ポリオレフィン、エチレン−酢酸ビニル共重合体
（ＥＶＡ）、エチレン−エチルアクリレート共重合体
（ＥＥＡ）などのポリマーをベースにした水密性混和物
を被覆充填することが行われている。2. Description of the Related Art Conventionally, in overhead transmission and distribution lines and submarine lines, in order to prevent oxidation and corrosion of the conductor wires due to the infiltration of water, polyolefin, ethylene, etc. should be provided over the entire length in the space between the wires and their outer circumference. Coating and filling water-tight admixtures based on polymers such as vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA).
【０００３】[0003]
【発明が解決しようとする課題】ところで、このような
水密性混和物においては、水密性に優れていることはも
とより、耐寒性に優れること、引張強度や伸びなどの機
械的特性が良好なこと、導体および絶縁体との密着性が
良好で、しかも、接続時の絶縁体の剥取りが容易なこ
と、つまり皮剥ぎ性に優れることなどが要求される。By the way, such a watertight mixture has not only excellent watertightness but also excellent cold resistance and good mechanical properties such as tensile strength and elongation. In addition, it is required that the adhesion between the conductor and the insulator is good, and that the insulator can be easily peeled off at the time of connection, that is, the peeling property is excellent.
【０００４】しかして、従来より知られる水密性混和物
においては、これらの要求特性を一応具備するものの未
だ十分ではなく、より一層の特性の向上が求められてい
る。本発明は、このような要求に応えるべくなされたも
ので、水密性、耐寒性、機械的特性、密着性などの諸特
性をより一層向上させた水密性混和物およびこれを用い
た信頼性の高い水密電線を提供することを目的とする。However, the conventionally known water-tight mixture has some of these required characteristics, but it is still insufficient, and further improvement of the characteristics is required. The present invention has been made in order to meet such a requirement, and a watertight admixture further improving various properties such as watertightness, cold resistance, mechanical properties, and adhesion, and reliability using the same. It is intended to provide a high watertight electric wire.
【０００５】[0005]
【課題を解決するための手段】本発明の水密性混和物
は、酢酸ビニル−塩化ビニル−マレイン酸三元共重合体
およびポリ塩化ビニルを含有し、かつ、これらの混合比
が重量比で 3:7〜7:3 であることを特徴とする。The watertight admixture of the present invention contains a vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride, and the mixing ratio of these is 3 by weight. It is characterized by: 7 to 7: 3.
【０００６】また、本発明の水密電線は、複数本の素線
を撚合わせた撚線導体外周に、前記水密性混和物を被覆
するとともに、その外側にプラスチック絶縁被覆を設け
てなることを特徴とする。Further, the watertight electric wire of the present invention is characterized in that the outer circumference of a stranded wire conductor formed by twisting a plurality of element wires is covered with the watertight mixture and a plastic insulating coating is provided on the outer side thereof. And
【０００７】本発明の水密性混和物においては、酢酸ビ
ニル−塩化ビニル−マレイン酸三元共重合体とポリ塩化
ビニルとを所定の割合で混合するようにしたので、水密
性、耐寒性、機械的特性、導体および絶縁体との密着性
などの諸特性が従来のものよりさらに向上したものとな
る。In the water-tight mixture of the present invention, the vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride are mixed in a predetermined ratio, so that the water-tightness, the cold resistance and the mechanical properties are improved. Characteristics, adhesiveness with conductors and insulators, and other characteristics are further improved as compared with conventional ones.
【０００８】また、本発明の水密電線は、このような水
密性、耐寒性、機械的特性、導体および絶縁体との密着
性などの諸特性に優れた水密性混和物が撚線導体外周に
被覆されているので、水密電線に要求される特性、すな
わち、水密性、低温巻付け性、密着性、皮剥ぎ性などに
優れたものとなり、信頼性を向上させることができる。Further, in the watertight electric wire of the present invention, a watertight mixture excellent in various properties such as watertightness, cold resistance, mechanical characteristics, adhesion to conductor and insulator is provided on the outer circumference of the stranded wire conductor. Since it is covered, it has excellent properties required for the watertight wire, that is, watertightness, low-temperature winding property, adhesiveness, peeling property, etc., and reliability can be improved.
【０００９】[0009]
【発明の実施の形態】以下、本発明を詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
【００１０】本発明の水密性混和物は、酢酸ビニル−塩
化ビニル−マレイン酸三元共重合体およびポリ塩化ビニ
ルを含有し、かつ、これらの混合比が重量比で 3:7〜7:
3 の範囲にあるものである。The watertight admixture of the present invention contains a vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride, and the mixing ratio thereof is 3: 7 to 7: by weight.
It is in the range of 3.
【００１１】ここで、酢酸ビニル−塩化ビニル−マレイ
ン酸三元共重合体とポリ塩化ビニルとの混合比を上記範
囲に限定した理由は、酢酸ビニル−塩化ビニル−マレイ
ン酸三元共重合体の割合が上記範囲を越えると耐寒性や
皮剥ぎ性が低下し、また、逆にポリ塩化ビニルが上記範
囲を越えると水密性が低下するようになるからである。
本発明においては、特に、酢酸ビニル−塩化ビニル−
マレイン酸三元共重合体として、たとえば信越化学社製
の TMF（商品名）などの、平均重合度が 200〜600 のも
のが適しており、また、ポリ塩化ビニルとしては、平均
重合度が 600〜1100のものが適している。Here, the reason why the mixing ratio of the vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride is limited to the above range is that of the vinyl acetate-vinyl chloride-maleic acid terpolymer. If the proportion exceeds the above range, the cold resistance and peeling property will deteriorate, and conversely, if the proportion of polyvinyl chloride exceeds the above range, the water tightness will decrease.
Particularly in the present invention, vinyl acetate-vinyl chloride-
As the maleic acid terpolymer, for example, TMF (trade name) manufactured by Shin-Etsu Chemical Co., Ltd. having an average degree of polymerization of 200 to 600 is suitable, and as polyvinyl chloride, an average degree of polymerization of 600 is used. Those of ~ 1100 are suitable.
【００１２】なお、本発明の水密性混和物には、上記成
分の他、耐寒性を向上させる目的で可塑剤を、また、導
体などとの密着性を向上させる目的で、熱可塑性ポリエ
ステルを配合することができる。可塑剤としては、いわ
ゆる耐寒性可塑剤として知られる脂肪酸系可塑剤があげ
られ、なかでも、ジイソデシルアジペート（ＤＩＤＡ）
のようなアジピン酸エステル系可塑剤の使用が望まし
い。また、熱可塑性ポリエステルとしては、たとえばユ
ニチカ社製の UE-3700（商品名）などがあげられる。In addition to the above components, the water-tight admixture of the present invention contains a plasticizer for the purpose of improving cold resistance, and a thermoplastic polyester for the purpose of improving the adhesion to conductors and the like. can do. Examples of the plasticizer include fatty acid plasticizers known as so-called cold-resistant plasticizers, and among them, diisodecyl adipate (DIDA).
It is desirable to use an adipic ester plasticizer such as Examples of the thermoplastic polyester include UE-3700 (trade name) manufactured by Unitika.
【００１３】これらの可塑剤および熱可塑性ポリエステ
ルの配合量としては、上記のベースポリマーの合計量 1
00重量部あたり、可塑剤25〜60重量部、熱可塑性ポリエ
ステル 5〜30重量部とすることが望ましい。可塑剤の配
合量が25重量部未満の場合には、耐寒性向上効果が小さ
く、逆に60重量部を越えると、得られる水密性混和物の
硬度が低くなり、引張強度が低下する。また、熱可塑性
ポリエステルの配合量が 5重量部未満の場合には、導体
などとの密着性の向上効果が小さく、逆に30重量部を越
えると皮剥ぎ性が低下する。The blending amount of these plasticizers and thermoplastic polyesters is such that the total amount of the above base polymer is 1
It is desirable to use 25 to 60 parts by weight of the plasticizer and 5 to 30 parts by weight of the thermoplastic polyester per 00 parts by weight. When the compounding amount of the plasticizer is less than 25 parts by weight, the effect of improving cold resistance is small, and when it exceeds 60 parts by weight, the hardness of the water-tight admixture obtained is low and the tensile strength is low. Further, when the blending amount of the thermoplastic polyester is less than 5 parts by weight, the effect of improving the adhesiveness with the conductor or the like is small, and when it exceeds 30 parts by weight, the peeling property is deteriorated.
【００１４】この他、本発明の水密性混和物には、さら
に防錆剤、安定剤、着色剤などの添加剤を、必要に応じ
て適宜配合することができる。In addition to the above, the water-tight mixture of the present invention may further contain additives such as a rust preventive agent, a stabilizer and a colorant, if necessary.
【００１５】次に、このような水密性混和物を用いた本
発明の水密電線について図面を用いて説明する。Next, the watertight electric wire of the present invention using such a watertight admixture will be described with reference to the drawings.
【００１６】すなわち、図１は、本発明の水密電線の一
例を示す横断面図で、図１において、１は、複数本の素
線２を撚合わせてなる撚線導体、また、３は、各素線２
間に充填された内層用水密性混和物を示している。そし
て本発明においては、これらの外周に、外層用水密性混
和物４として、上述したような水密性混和物が被覆さ
れ、さらに、その上に、ポリエチレンや塩化ビニル樹脂
などをベースとした絶縁性組成物の押出しなどによる絶
縁被覆５が設けられている。That is, FIG. 1 is a cross-sectional view showing an example of the watertight electric wire of the present invention. In FIG. 1, 1 is a stranded wire conductor formed by twisting a plurality of element wires 2, and 3 is a stranded wire conductor. Each strand 2
Figure 3 shows the watertight admixture for the inner layer, filled in between. And in the present invention, the outer periphery thereof is coated with the water-tight admixture as described above as the outer layer water-tight admixture 4, and further, on top of that, an insulating property based on polyethylene or vinyl chloride resin is provided. An insulating coating 5 is provided, such as by extrusion of the composition.
【００１７】なお、内層用水密性混和物３としては、銅
との接着性の良いＥＶＡ、ＥＥＡ、熱可塑性ポリエステ
ルなどが使用されるが、外層用水密性混和物４と同種の
もの、すなわち、本発明にかかる上記水密性混和物を用
いるようにしてもよい。この場合、導体との密着性や、
素線間への充填の容易性などの点から、酢酸ビニル−塩
化ビニル−マレイン酸三元共重合体は、平均重合度が 2
00〜600 のものであることが望ましい。As the water-tight admixture 3 for the inner layer, EVA, EEA, thermoplastic polyester or the like having good adhesion to copper is used, but the same kind as the water-tight admixture 4 for the outer layer, that is, You may make it use the said watertight admixture concerning this invention. In this case, the adhesion with the conductor,
The vinyl acetate-vinyl chloride-maleic acid terpolymer has an average degree of polymerization of 2 from the viewpoint of ease of filling between the strands.
It is desirable that it is from 00 to 600.
【００１８】また、外層用水密性混和物４の被覆厚は、
撚線導体１の外径などによっても異なるが、通常、0.02
〜0.8mm の範囲が適当である。The coating thickness of the watertight mixture 4 for the outer layer is
Normally it is 0.02, although it depends on the outer diameter of the stranded conductor 1.
A range of up to 0.8 mm is suitable.
【００１９】このように構成される水密電線において
は、水密性、耐寒性、機械的特性、導体および絶縁体と
の密着性、剥取り性などに優れた水密性混和物が撚線導
体外周に被覆されているので、水密性、低温巻付け性、
機械的特性、導体および絶縁体との密着性、皮剥ぎ性な
どに優れ、水密電線として高い信頼性を具備する。In the water-tight wire thus constructed, a water-tight mixture excellent in water-tightness, cold resistance, mechanical properties, adhesion to conductors and insulators, peeling property, etc. is formed on the outer circumference of the stranded wire conductor. As it is covered, it is watertight, low-temperature winding property,
It has excellent mechanical properties, adhesion to conductors and insulators, peeling properties, etc., and high reliability as a watertight wire.
【００２０】[0020]
【実施例】次に、本発明の実施例を具体的に記載する。EXAMPLES Next, examples of the present invention will be specifically described.
【００２１】実施例１〜７ 外径 2mmの銅素線を19本撚合わせつつ各素線間に、酢酸
ビニル−塩化ビニル−マレイン酸三元共重合体（ PVC・
VA・MA三元共重合体）100 重量部、フタル酸エステル 8
0 重量部、および安定剤 3重量部を混合して得た内層用
水密性混和物を充填した後、これらの外周に、酢酸ビニ
ル−塩化ビニル−マレイン酸三元共重合体（ PVC・VA・
MA三元共重合体）およびポリ塩化ビニルをベースとし、
これに熱可塑性ポリエステル、可塑剤および安定剤とを
配合した表１に示す組成の水密性混和物を約 0.1mmの厚
さに押出被覆した。次いで、この水密性混和物被覆層上
に、軟質塩化ビニル樹脂を連続的に押出被覆して外径約
13mmの水密電線を製造した。 得られた水密電線につい
て、水密性、低温巻付け性、および皮剥ぎ性を評価する
とともに、撚線導体外周に被覆した水密性混和物を用い
てシートを作製し、これらの各シートについて、脆化温
度、引張強度、 100％モジュラス、および銅板に対する
接着力を測定した。これらの結果を表１に併せ示す。Examples 1 to 7 Vinyl acetate / vinyl chloride / maleic acid terpolymer (PVC
VA / MA terpolymer) 100 parts by weight, phthalate ester 8
0 parts by weight and 3 parts by weight of a stabilizer were mixed and filled with a water-tight mixture for the inner layer, and then the outer periphery of these was mixed with vinyl acetate-vinyl chloride-maleic acid terpolymer (PVC / VA.
MA terpolymer) and polyvinyl chloride based,
A water-tight mixture having the composition shown in Table 1 in which a thermoplastic polyester, a plasticizer and a stabilizer were mixed was extrusion-coated to a thickness of about 0.1 mm. Then, a soft vinyl chloride resin was continuously extrusion-coated on the water-tight mixture coating layer to give an outer diameter of about
A 13 mm watertight wire was manufactured. For the obtained watertight electric wire, watertightness, low-temperature winding property, and peeling property were evaluated, and a sheet was prepared using the watertight mixture coated on the outer circumference of the stranded conductor, and each of these sheets was fragile. The aging temperature, tensile strength, 100% modulus, and adhesion to copper plate were measured. The results are also shown in Table 1.
【００２２】なお、水密性は、試料電線の浸水長を常法
により測定し、その値が50mmのものを○、 100mm以下の
ものを△、それ以上のものを×として示した。The watertightness is shown by ◯ when the water immersion length of the sample electric wire was measured by a conventional method, Δ when the value was 50 mm, Δ when it was 100 mm or less, and x when it was more than 100 mm.
【００２３】低温巻付け性は、 -10℃の温度で自己径の
8倍の径に巻付け、ひびや割れが生じなかったものを
○、ひびや割れがわずかに生じたものを△、ひびや割れ
が広く発生したものを×として示した。The low-temperature winding property is such that the self-diameter at a temperature of -10 ° C
Wound around 8 times the diameter, no cracks and cracks were shown as ◯, cracks and cracks were slightly generated as Δ, and cracks and cracks were widely generated as x.
【００２４】皮剥ぎ性は、常温での皮剥ぎの容易性を調
べ、水密性混和物が全く残存せずに剥ぎ取ることができ
たものを○、部分的に残存がみられたものを△、剥ぎ取
りが不可能だった場合を×として示した。As for the peeling property, the ease of peeling at normal temperature was examined, and those which could be peeled off without any water-tight admixture remaining were evaluated as ○, and those which were partially observed were evaluated as Δ. , X indicates that the stripping was impossible.
【００２５】また、シートについて測定した脆化温度、
引張強度、 100％モジュラスは、いずれも JIS-C3005に
基づく測定値であり、さらに、銅板に対する接着力は、
150℃× 2分間の熱プレスで成型した試料シートの剥離
試験（剥離速度 200m/分、 180度剥離）による測定値で
ある。Also, the brittle temperature measured for the sheet,
Tensile strength and 100% modulus are all measured values based on JIS-C3005, and the adhesive strength to the copper plate is
It is the value measured by a peel test (peeling speed 200 m / min, 180 degree peeling) of a sample sheet molded by hot pressing at 150 ° C for 2 minutes.
【００２６】表１には、また、本発明との比較のため
に、酢酸ビニル−塩化ビニル−マレイン酸三元共重合体
のポリ塩化ビニルに対する配合量を過剰にした例（比較
例１）、逆に酢酸ビニル−塩化ビニル−マレイン酸三元
共重合体のポリ塩化ビニルに対する配合量を過少にした
例（比較例２）、酢酸ビニル−塩化ビニル−アクリル酸
三元共重合体（ PVC・VA・AA三元共重合体）をベースと
した例（比較例３）を併せ示した。Table 1 also shows, for comparison with the present invention, an example in which the compounding amount of the vinyl acetate-vinyl chloride-maleic acid terpolymer was excessive with respect to polyvinyl chloride (Comparative Example 1). On the contrary, an example in which the blending amount of the vinyl acetate-vinyl chloride-maleic acid terpolymer is too small with respect to polyvinyl chloride (Comparative Example 2), the vinyl acetate-vinyl chloride-acrylic acid terpolymer (PVC / VA An example based on (AA terpolymer) (Comparative Example 3) is also shown.
【００２７】[0027]
【表１】 表１からも明らかなように、本発明にかかる水密性混和
物は、耐寒性、機械的特性、密着性などがいずれも良好
で、特に、平均重合度が 400の酢酸ビニル−塩化ビニル
−マレイン酸三元共重合体と平均重合度が 600および 8
00のポリ塩化ビニルを併用した例では、より優れた諸特
性を有していた。また、このような水密性混和物を用い
た水密電線は、この種の電線に要求される水密性、低温
巻付け性、皮剥ぎ性に優れるものであった。[Table 1] As is clear from Table 1, the water-tight admixture according to the present invention has good cold resistance, mechanical properties, adhesion and the like, and in particular, vinyl acetate-vinyl chloride-malein having an average degree of polymerization of 400. Acid terpolymer and average degree of polymerization of 600 and 8
The example in which polyvinyl chloride of 00 was used in combination had various excellent properties. Further, a watertight electric wire using such a watertight mixture has excellent watertightness, low-temperature winding property, and peeling property required for this type of electric wire.
【００２８】[0028]
【発明の効果】以上説明したように、本発明の水密性混
和物は、酢酸ビニル−塩化ビニル−マレイン酸三元共重
合体とポリ塩化ビニルを特定の割合で混合するようにし
たので、水密性、耐寒性、機械的特性、密着性などに優
れ、また、本発明の水密電線は、このような優れた特性
を有する水密性混和物を素線の撚合わせ導体の外周に被
覆するようにしたので、この種の電線に要求される水密
性、低温巻付け性、皮剥ぎ性などの諸特性に優れてい
る。As described above, since the water-tight mixture of the present invention is prepared by mixing the vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride in a specific ratio, Excellent in heat resistance, cold resistance, mechanical properties, adhesion, etc. Also, the watertight electric wire of the present invention is such that the watertight mixture having such excellent properties is coated on the outer periphery of the twisted conductor of the wire. Therefore, it has excellent properties such as watertightness, low-temperature winding property, and peeling property required for this type of electric wire.
【図１】本発明の水密電線の一例を示す横断面図。FIG. 1 is a cross-sectional view showing an example of a watertight electric wire of the present invention.
１………素線 ２………撚線導体 ３………内層用水密性混和物 ４………外層用水密性混和物 ５………絶縁被覆 1 ……… strands 2 ……… stranded conductor 3 ……… water-tight admixture for inner layer 4 ……… water-tight admixture for outer layer 5 ……… insulation coating
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｂ 3/44 Ｈ０１Ｂ 3/44 Ｂ Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI Technical display area H01B 3/44 H01B 3/44 B
Claims (5)
元共重合体およびポリ塩化ビニルを含有し、かつ、これ
らの混合比が重量比で 3:7〜7:3 であることを特徴とす
る水密性混和物。1. A vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride are contained, and the mixing ratio thereof is 3: 7 to 7: 3 by weight. Watertight mixture.
均重合度が 200〜600であり、かつ、ポリ塩化ビニルの
平均重合度が 600〜1100であることを特徴とする水密性
混和物。2. The watertight admixture according to claim 1, wherein the vinyl acetate-vinyl chloride-maleic acid terpolymer has an average degree of polymerization of 200 to 600, and polyvinyl chloride has an average degree of polymerization of 200 to 600. A watertight mixture characterized by being 600 to 1100.
おいて、 酢酸ビニル−塩化ビニル−マレイン酸三元共重合体およ
びポリ塩化ビニルの合計量100 重量部あたり、脂肪酸系
可塑剤を25〜60重量部配合してなることを特徴とする水
密性混和物。3. The water-tight admixture according to claim 1, wherein the fatty acid plasticizer is added in an amount of 25 to 50 parts by weight per 100 parts by weight of the total amount of the vinyl acetate-vinyl chloride-maleic acid terpolymer and polyvinyl chloride. A watertight mixture characterized by being mixed in an amount of 60 parts by weight.
密性混和物において、引張強度が 12MPa以上で、かつ、
100％モジュラスが 7MPa 以上であることを特徴とする
水密電線。4. The watertight mixture according to claim 1, which has a tensile strength of 12 MPa or more, and
A watertight wire characterized by a 100% modulus of 7 MPa or more.
に、請求項１乃至４のいずれか 1項記載の水密性混和物
を被覆するとともに、その外側にプラスチック絶縁被覆
を設けてなることを特徴とする水密電線。5. A water-tight admixture according to any one of claims 1 to 4 is coated on the outer circumference of a stranded wire conductor formed by twisting a plurality of strands, and a plastic insulating coating is provided on the outer side thereof. It is a watertight electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343344A JPH09180549A (en) | 1995-12-28 | 1995-12-28 | Water-tight admixture and water-tight electric wire using the water-tight admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343344A JPH09180549A (en) | 1995-12-28 | 1995-12-28 | Water-tight admixture and water-tight electric wire using the water-tight admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09180549A true JPH09180549A (en) | 1997-07-11 |
Family
ID=18360800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7343344A Withdrawn JPH09180549A (en) | 1995-12-28 | 1995-12-28 | Water-tight admixture and water-tight electric wire using the water-tight admixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09180549A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11195328A (en) * | 1997-12-27 | 1999-07-21 | Sumitomo Electric Ind Ltd | Silane cross-linked watertight insulated wire and manufacture therefor |
| JP2000271982A (en) * | 1999-03-23 | 2000-10-03 | Sumitomo Wiring Syst Ltd | Thickness adjusting device of watertight layer in watertight electric wire producing apparatus |
| US20130264093A1 (en) * | 2011-01-24 | 2013-10-10 | La Farga Lacambra, S.A.U. | Electrical Conductor for Transporting Electrical Energy and Corresponding Production Method |
| JP2018152983A (en) * | 2017-03-13 | 2018-09-27 | デンカ株式会社 | Protective tube, protective material and wire harness |
-
1995
- 1995-12-28 JP JP7343344A patent/JPH09180549A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11195328A (en) * | 1997-12-27 | 1999-07-21 | Sumitomo Electric Ind Ltd | Silane cross-linked watertight insulated wire and manufacture therefor |
| JP2000271982A (en) * | 1999-03-23 | 2000-10-03 | Sumitomo Wiring Syst Ltd | Thickness adjusting device of watertight layer in watertight electric wire producing apparatus |
| US20130264093A1 (en) * | 2011-01-24 | 2013-10-10 | La Farga Lacambra, S.A.U. | Electrical Conductor for Transporting Electrical Energy and Corresponding Production Method |
| JP2018152983A (en) * | 2017-03-13 | 2018-09-27 | デンカ株式会社 | Protective tube, protective material and wire harness |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EA010339B1 (en) | Low voltage power cable with polyolefin-based insulation layer | |
| JPH09180549A (en) | Water-tight admixture and water-tight electric wire using the water-tight admixture | |
| US5114746A (en) | Cable coated with at least two concentric layers of polymeric material and process of making same | |
| JP3692315B2 (en) | A watertight insulated wire using a compressed conductor. | |
| JP2016152186A (en) | Water tight insulation electric wire | |
| JP6065333B2 (en) | Watertight insulated wire and method for producing watertight insulated wire | |
| JPH10204227A (en) | Watertight composition and watertight insulated electric cable | |
| JP4445727B2 (en) | Watertight resin composition and watertight insulated wire | |
| JPH11232931A (en) | Insulated electric wire | |
| JP2829527B2 (en) | Water resistant cable | |
| JP2918900B2 (en) | Watertight conductor | |
| JP5675668B2 (en) | Resin composition for watertight material and insulated wire having watertight material using the composition | |
| JP2829528B2 (en) | Water resistant cable | |
| JPH087652A (en) | Resin composition for automobile electric wire and thin low voltage cable for automobile | |
| JPH03127408A (en) | Watertight wire | |
| JP2918910B2 (en) | Watertight insulated wire core | |
| JP2657507B2 (en) | Watertight conductor | |
| JPH059778Y2 (en) | ||
| JPH0655866B2 (en) | Watertight admixture | |
| JPH0692510B2 (en) | Watertight admixture | |
| JPH01195612A (en) | Watertight conductor | |
| JPH0676521B2 (en) | Watertight admixture | |
| JPS60193209A (en) | Watertight insulated wire | |
| JPS63245815A (en) | Watertight ow wire | |
| JPH07141926A (en) | Water-tighting agent and water-tight electric wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030304 |