JPH0261908A - Electric wire and cable - Google Patents
Electric wire and cableInfo
- Publication number
- JPH0261908A JPH0261908A JP21273288A JP21273288A JPH0261908A JP H0261908 A JPH0261908 A JP H0261908A JP 21273288 A JP21273288 A JP 21273288A JP 21273288 A JP21273288 A JP 21273288A JP H0261908 A JPH0261908 A JP H0261908A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- electric wire
- polyolefine
- composition
- water
- 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
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920000098 polyolefin Polymers 0.000 claims abstract description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 240000005572 Syzygium cordatum Species 0.000 abstract description 9
- 235000006650 Syzygium cordatum Nutrition 0.000 abstract description 9
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000003989 dielectric material Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004132 cross linking Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 150000003755 zirconium compounds Chemical class 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明は電線・ケーブル、特に耐水トリー性に優れた電
線・ケーブルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to electric wires and cables, particularly electric wires and cables with excellent water resistance.
［従来の技術］
ポリオレフィン、特にポリエチレンを架橋したいわゆる
架橋ポリエチレンは電気絶縁性及び耐熱性に優れている
ため、電線・ケーブルの絶縁材料として広く用いられて
いるが、ポリオレフィン系の絶縁材料を浸水、湿潤状態
で使用すると水トリー発生による絶縁劣化を生じること
が認められている。[Prior Art] Polyolefin, especially so-called cross-linked polyethylene, which is made by cross-linking polyethylene, has excellent electrical insulation and heat resistance, and is therefore widely used as an insulating material for electric wires and cables. It is recognized that when used in wet conditions, insulation deterioration occurs due to water tree generation.
［発明が解決しようとする課題］
従って、電線・ケーブルの信頼性を向上させるためには
、水トリーの発生をいかに低減させるかが大きな問題と
なり、過去数多くの研究が行われている。[Problems to be Solved by the Invention] Therefore, in order to improve the reliability of electric wires and cables, how to reduce the occurrence of water trees has become a major problem, and many studies have been conducted in the past.
その結果、多くの添加剤が提案されているが、水トリー
の発生を十分に抑止できる添加剤はまだ見い出されてい
ない。As a result, many additives have been proposed, but no additive has yet been found that can sufficiently suppress the occurrence of water trees.
本発明は、上記した従来技術をベースに研究を重ねた結
果得られたものであって、その目的とするところは、水
トリーの発生を抑制することのできる、改良された電線
・ケーブルを提供することにある。The present invention was obtained as a result of repeated research based on the above-mentioned conventional technology, and its purpose is to provide improved electric wires and cables that can suppress the occurrence of water trees. It's about doing.
［課題を解決するための手段及び作用］本発明の要旨は
、電気絶縁体として、ポリオレフィン１００重量部に有
機ジルコニウムを０．０２重量部以上添加した組成物或
いはこの組成物を架橋処理したものを用いたことにあり
、それによって耐水トリー性を大幅に向上させたもので
ある。[Means and effects for solving the problem] The gist of the present invention is to use a composition in which 0.02 parts by weight or more of organic zirconium is added to 100 parts by weight of polyolefin, or a crosslinked product of this composition, as an electrical insulator. This is due to the fact that it has been used for a long time, thereby greatly improving water resistance.
本発明において、有機ジル：１ニウムとは下記の構造式
を有する化合物である。In the present invention, organozyl:1 nium is a compound having the following structural formula.
ＲＯ
ＯＲ−Ｚ ｒ−ＯＲ
Ｒ
（式中、Ｒはアルキル基を表す）
上記有機ジルコニウム化合物は液状であるため、ポリマ
ー中での分散が良く、通常の混練添加法により容易に添
加することができる。RO OR-Z r-OR R (In the formula, R represents an alkyl group) Since the above organic zirconium compound is liquid, it is well dispersed in the polymer and can be easily added by a normal kneading addition method. .
本発明において有機ジルコニウムの添加量を限定した理
由は、限定母未満では水トリー抑止効果が小さいからで
ある。The reason why the amount of organic zirconium added is limited in the present invention is that if it is less than the limiting value, the water tree inhibiting effect is small.
本発明において絶縁組成物を架橋するには、ジクミルパ
ーオキサイドに代表される有機過酸化物を添加して押出
加熱する方式が最も代表的であるが、それ以外にＮｌｌ
性放射線を照射する架橋方法、更にはシラノール縮合触
媒の存在下で水と接触させる架橋方法を挙げることもで
きる。In order to crosslink the insulating composition in the present invention, the most typical method is to add an organic peroxide such as dicumyl peroxide and extrude heat.
Examples of crosslinking methods include irradiation with radioactive radiation and further crosslinking methods in which contact is made with water in the presence of a silanol condensation catalyst.
［実 施 例１ 次に、本発明の実施例を比較例と共に説明する。[Implementation Example 1] Next, examples of the present invention will be described together with comparative examples.
評価は電線で行い、電線は次の方法で成形した。The evaluation was performed using electric wires, and the electric wires were molded using the following method.
８インヂテストロールにポリオレフィン樹脂、酸化防止
剤、架橋する場合はジクミルパーオキサイドを投入し、
混練した。この混線シートをペレタイザーでベレット化
し、外径３Ｍの銅導体上に絶縁厚さ２ｍとなるように押
出被覆した。架橋するものは、その後窒素ガスを熱媒体
とした乾式架橋管内で架橋した。押出時のダイスかすは
、絶縁電線の外観を目視観察して評価した。Add polyolefin resin, antioxidant, and dicumyl peroxide for crosslinking to an 8-inch test roll.
Kneaded. This mixed wire sheet was made into pellets using a pelletizer, and extrusion coated onto a copper conductor having an outer diameter of 3M to an insulation thickness of 2m. Those to be crosslinked were then crosslinked in a dry crosslinking tube using nitrogen gas as a heating medium. Die residue during extrusion was evaluated by visually observing the appearance of the insulated wire.
このようにして得た各種絶縁電線を水中に浸漬し、導体
と水との間に３ＫＶ、５０ Ｈｚの交流電圧をかけ、５
００日間課電を行った。この時、水の温度は室温から９
０℃まで１２時間周期で変化させた。The various insulated wires obtained in this way were immersed in water, and an AC voltage of 3 KV and 50 Hz was applied between the conductor and the water.
Charged electricity for 00 days. At this time, the water temperature ranges from room temperature to 9
The temperature was changed to 0°C in 12 hour cycles.
ｙＩＮ終了侵、試料をスライスしてメチレンブルー水溶
液で煮沸染色し、発生した水トリーの数と大きさとを電
子顕微鏡で観察した。結果を下表に示す。After the yIN invasion, the sample was sliced, boiled and stained with a methylene blue aqueous solution, and the number and size of generated water trees were observed using an electron microscope. The results are shown in the table below.
（配合量の単位：重量部） に多かった。(Unit of amount: parts by weight) There were many
［発明の効果］
以上説明してきた通り本発明によれば、耐水トリー性を
大幅に向上させた電線・ケーブルが得られる。[Effects of the Invention] As explained above, according to the present invention, electric wires and cables with significantly improved water resistance can be obtained.
表から明らかなように、本発明に係る有機ジルコニウム
化合物を限定量だけ添加した実施例１〜３は水トリーの
発生が十分抑止されている。As is clear from the table, in Examples 1 to 3 in which only a limited amount of the organic zirconium compound according to the present invention was added, the occurrence of water trees was sufficiently suppressed.
Claims (1)
０．０２重量部以上添加した絶縁組成物を導体もしくは
内部半導電層上に押出被覆してなることを特徴とする電
線・ケーブル。1. An electric wire or cable characterized in that an insulating composition containing 100 parts by weight of polyolefin and 0.02 parts by weight or more of organic zirconium is extruded coated onto a conductor or internal semiconductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21273288A JPH0261908A (en) | 1988-08-26 | 1988-08-26 | Electric wire and cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21273288A JPH0261908A (en) | 1988-08-26 | 1988-08-26 | Electric wire and cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261908A true JPH0261908A (en) | 1990-03-01 |
Family
ID=16627516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21273288A Pending JPH0261908A (en) | 1988-08-26 | 1988-08-26 | Electric wire and cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261908A (en) |
-
1988
- 1988-08-26 JP JP21273288A patent/JPH0261908A/en active Pending
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