JPS62165813A - Manufacture of crosslinked polyethylene insulated aerial cable - Google Patents
Manufacture of crosslinked polyethylene insulated aerial cableInfo
- Publication number
- JPS62165813A JPS62165813A JP591786A JP591786A JPS62165813A JP S62165813 A JPS62165813 A JP S62165813A JP 591786 A JP591786 A JP 591786A JP 591786 A JP591786 A JP 591786A JP S62165813 A JPS62165813 A JP S62165813A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene insulated
- crosslinked polyethylene
- copper
- overhead cable
- insulated overhead
- 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
- 229920003020 cross-linked polyethylene Polymers 0.000 title claims description 16
- 239000004703 cross-linked polyethylene Substances 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 25
- -1 polyethylene Polymers 0.000 claims description 20
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 16
- 229920000573 polyethylene Polymers 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 229920003043 Cellulose fiber Polymers 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000003449 preventive effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 4
- 239000012964 benzotriazole Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 4
- 229920005613 synthetic organic polymer Polymers 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 2
- 238000007765 extrusion coating Methods 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 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 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- GVSNQMFKEPBIOY-UHFFFAOYSA-N 4-methyl-2h-triazole Chemical compound CC=1C=NNN=1 GVSNQMFKEPBIOY-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
童呈上立科里光■
本発明は、架橋ポリエチレン絶縁架空ケーブル新規な製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel manufacturing method for a cross-linked polyethylene insulated overhead cable.
従 の ′荷および” を−すべき。・つ架橋ポリエチ
レン絶縁架空ケーブルにおける銅導体の応力腐食にもと
ずく切断事故を防止するために、銅導体直上に銅防錆剤
を塗布することが行われているが、この方法は銅導体直
上への銅防錆剤の塗布量が少量であるために防食効果の
持続期間が極めて短い欠点がある。上記の提案に代わっ
て、絶縁層中に銅防錆剤を混合する提案もある。・In order to prevent cutting accidents due to stress corrosion of copper conductors in cross-linked polyethylene insulated overhead cables, it is recommended to apply a copper rust preventive agent directly on the copper conductors. However, this method has the disadvantage that the anticorrosion effect lasts for an extremely short period of time due to the small amount of copper rust preventive applied directly onto the copper conductor. There is also a proposal to mix rust inhibitors.
絶縁層中に混合された銅防錆剤は、徐々に絶縁層の銅導
体側表面上に移行して防食作用をなし、また絶縁層中に
は大量の銅防錆剤を配合することができるので、この提
案は、一般に実用上類るを用であると期待されている。The copper rust preventive agent mixed in the insulating layer gradually migrates onto the copper conductor side surface of the insulating layer and exerts an anticorrosion effect, and a large amount of the copper rust preventive agent can be blended into the insulating layer. Therefore, this proposal is expected to be of similar practical use in general.
ところで、絶縁層が架橋ポリエチレンである場合、ケー
ブル製造時において銅導体直上に被覆した未架橋のポリ
エチレン組成物を加圧下に加熱架橋する必要があるが、
このとき加圧によって未架橋のポリエチレン組成物が銅
導体間の間隙に流入する問題がある。この問題の解決の
ため、銅導体直上に予め上記の流入防止のためのポリエ
ステルなどのセパレータテープを巻回することが行われ
ている。しかしながら、このセパレータテープの存在に
よって架橋ポリエチレン絶縁層から移行してきた銅防錆
剤が遮断されて、防食が充分に達成されないという新た
な問題がある。By the way, when the insulating layer is made of crosslinked polyethylene, it is necessary to heat and crosslink the uncrosslinked polyethylene composition coated directly over the copper conductor under pressure when manufacturing the cable.
At this time, there is a problem that the uncrosslinked polyethylene composition flows into the gap between the copper conductors due to pressurization. In order to solve this problem, a separator tape made of polyester or the like is wrapped in advance directly above the copper conductor to prevent the above-mentioned inflow. However, there is a new problem in that the presence of this separator tape blocks the copper rust inhibitor that has migrated from the crosslinked polyethylene insulating layer, making it impossible to achieve sufficient corrosion protection.
問題解決の手段
本発明は、上記の問題を解決するために、新規な架橋ポ
リエチレン絶縁架空ケーブルの製造方法を提供せんとす
るものである。Means for Solving the Problem In order to solve the above-mentioned problems, the present invention aims to provide a novel method for manufacturing a cross-linked polyethylene insulated overhead cable.
即ち、本発明は、銅導体の直上に、ガーレー気密度が少
なくとも１０秒／１００ｃｃのセルロース繊維製セパレ
ータテープを施し、その上に銅防錆剤を含有した架橋性
ポリエチレン組成物を押出被覆し、ついで架橋性ポリエ
チレン組成物の押出被覆層を加圧下で架橋することを特
徴とする架橋ポリエチレン絶縁架空ケーブルの製造方法
である。That is, in the present invention, a cellulose fiber separator tape having a Gurley airtightness of at least 10 seconds/100 cc is applied directly above the copper conductor, and a crosslinkable polyethylene composition containing a copper rust preventive agent is extrusion coated thereon. This is a method for producing a crosslinked polyethylene insulated overhead cable, characterized in that the extruded coating layer of the crosslinkable polyethylene composition is then crosslinked under pressure.
立凪二四エ
セパレータテープとして、セルロース製のものを用いる
ことにより、セルロース繊維に特有の有孔性により、ケ
ーブルの稼動時にはセパレータテープのガス透過性の故
に銅防錆剤の銅導体側への移行が阻害されないので、銅
導体は長期にわたり防錆状態に保たれる。また、本発明
において用いるセパレータテープは、１０秒／１００ｃ
ｃ以上の高ガーレー気密度を有するので、架橋性ポリエ
チレン組成物の押出被覆層を加圧下で架橋しても未架橋
のポリエチレン組成物が銅導体間の間隙に流入すること
が防止される。By using cellulose as the Tatenagi 24 separator tape, due to the porosity peculiar to cellulose fibers, when the cable is in operation, due to the gas permeability of the separator tape, the copper rust preventive agent will not be applied to the copper conductor side. Since the migration is not inhibited, the copper conductor remains rust-proof for a long time. In addition, the separator tape used in the present invention is
Since it has a high Gurley airtight density of c or more, even if the extruded coating layer of the crosslinkable polyethylene composition is crosslinked under pressure, the uncrosslinked polyethylene composition is prevented from flowing into the gaps between the copper conductors.
本発明において用いるセパレータテープは、セルロース
繊維製のものであるが、クラフトパルプ紙などのセルロ
ース繊維紙のほか、セルロース繊維とポリエチレン、ポ
リプロピレン、ポリエステル、ナイロンなどの合成有機
高分子との混抄紙をも用いることができる。混抄紙の場
合、セルロース繊維と合成有機高分子との混合比は、セ
ルロース繊維１００重量部あたり合成有機高分子５〜５
０重量部程度が適当である。The separator tape used in the present invention is made of cellulose fiber, but in addition to cellulose fiber paper such as kraft pulp paper, it can also be made of paper made of a mixture of cellulose fiber and synthetic organic polymers such as polyethylene, polypropylene, polyester, and nylon. Can be used. In the case of mixed paper, the mixing ratio of cellulose fibers and synthetic organic polymers is 5 to 5 parts by weight of synthetic organic polymers per 100 parts by weight of cellulose fibers.
Approximately 0 parts by weight is appropriate.
ケーブル製造時における前記した未架橋のポリエチレン
組成物の洞導体間間隙への流入を防止する機能、並びに
ケーブルの稼動時における銅防錆剤の移行を許容する機
能の双方を一層良好に果たす観点から、本発明において
用いるセパレータテープとしては、ガーレー気密度が５
０〜１０４秒／ １００ｃ ｃ 、特に１００〜５００
０秒／１００ｃｃのものが好ましい。From the viewpoint of better achieving both the function of preventing the above-mentioned uncrosslinked polyethylene composition from flowing into the gap between the sinus conductors during cable manufacture, and the function of allowing migration of the copper rust preventive agent during cable operation. The separator tape used in the present invention has a Gurley air density of 5.
0-104 seconds/100cc, especially 100-500
0 seconds/100cc is preferable.
本発明における銅防錆剤としては、銅表面を不動化して
応力腐食割れの原因となる銅の腐食を防止する作用をな
す薬剤であれば特に制限はない。The copper rust preventive agent in the present invention is not particularly limited as long as it is an agent that immobilizes the copper surface and prevents copper corrosion that causes stress corrosion cracking.
たとえば、ピロール系、ピラゾール系、チアゾール系、
イミダゾール系、トリアゾール系、メルカプタン系、チ
オウレア系などの薬剤を例示することができる。これら
薬剤のうち、ベンゾトリアゾール、トリルトリアゾール
、メチルトリアゾールなどのトリアゾール化合物、就中
ベンゾトリアゾールが特に好ましい。For example, pyrrole, pyrazole, thiazole,
Examples include imidazole-based, triazole-based, mercaptan-based, and thiourea-based drugs. Among these drugs, triazole compounds such as benzotriazole, tolyltriazole, and methyltriazole are particularly preferred, especially benzotriazole.
１隻班
以下、実施例及び比較例により本発明を一層詳細に説明
する。EXAMPLES The present invention will be explained in more detail with reference to Examples and Comparative Examples below.
実施例１
径２．３Ｈφの銅線３７本を撚り合わした撚線銅導体の
上に、幅６０１１、厚さ１５０μｍ、ＪＩＳ Ｐ８１
１７に規定の方法で測定したガーレー気密度が、４００
秒／１００ｃｃのクラフトパルプ紙からなるセパレータ
テープを１層巻回し、その上にポリエチレン１００重量
部、ジクミルパーオキサイド２重量部、ベンゾトリアゾ
ール１．０重量部とからなる架橋性ポリエチレン組成物
を押出被覆し、ついで１７ｋｇ／ｃｍ”の高圧水蒸気を
描たした架橋室におい架橋性ポリエチレン組成物の押出
被覆層を２１０℃、５分の条件で連続架橋して架橋ポリ
エチレン絶縁架空ケーブルを製造した。Example 1 Width: 6011, thickness: 150 μm, JIS P81
Gurley tightness measured by the method prescribed in 17 is 400
A separator tape made of kraft pulp paper of 100 cc per second is wound in one layer, and a crosslinkable polyethylene composition made of 100 parts by weight of polyethylene, 2 parts by weight of dicumyl peroxide, and 1.0 parts by weight of benzotriazole is extruded onto it. The extruded coating layer of the crosslinkable polyethylene composition was then continuously crosslinked at 210° C. for 5 minutes in a crosslinking chamber with high pressure steam of 17 kg/cm" to produce a crosslinked polyethylene insulated overhead cable.
実施例２
クラフトバルブ紙からなるセパレータテープのガーレー
気密度が、２０００秒／１００ｃｃである点においての
み実施例１と異なる架橋ポリエチレン絶縁架空ケーブル
の製造をおこなった。Example 2 A cross-linked polyethylene insulated overhead cable was produced which differed from Example 1 only in that the Gurley airtightness of the separator tape made of kraft valve paper was 2000 seconds/100 cc.
比較例１
セパレータテープとして、ガーレー気密度が無限大のポ
リエステルチーブを用いた点においてのみ実施例１と異
なる架橋ポリエチレン絶縁架空ケーブルの製造をおこな
った。Comparative Example 1 A crosslinked polyethylene insulated overhead cable was produced which differed from Example 1 only in that a polyester tube with infinite Gurley airtightness was used as the separator tape.
比較例２
セパレータテープは、ポリエステル織布であり、かつそ
のガーレー気密度が２秒／１００ｃｃである点において
のみ実施例１と異なる架橋ポリエチレン絶縁架空ケーブ
ルの製造をおこなった。Comparative Example 2 A cross-linked polyethylene insulated overhead cable was produced which differed from Example 1 only in that the separator tape was a polyester woven fabric and its Gurley airtightness was 2 seconds/100 cc.
実施例１．２および比較例１．２で得た各ケーブルにつ
き、つぎの２項目の測定を行い、その結果を下表に示し
た。The following two items were measured for each cable obtained in Example 1.2 and Comparative Example 1.2, and the results are shown in the table below.
ポリエチレン流動防止性：ケーブル製造後、ケーブルを
解体して未架橋のポリエチレン組成物のｗ４導体間間隙
への流入の有無を調べた。Polyethylene flow prevention property: After the cable was manufactured, the cable was disassembled and whether or not the uncrosslinked polyethylene composition flowed into the gap between the W4 conductors was examined.
防錆性能：長さ３Ｑｃｍのケーブル試料を金鋸で切り出
し、Ｎ Ｈａイオン濃度１１００ｐｐの水溶液を満たし
た内径５０ｍｍの円筒状ガラス容器中に垂直に設置した
。ついで、水溶液の深さを一日間２０ｃｍ、６日間ＩＱ
ｃｍを１サイクルとする乾湿を行い、恒温槽にて６０°
Ｃ８時間、常温１６時間のヒートサイクルを８遇間行っ
たのち、ケーブル試料の中間部分ＩＱｃｍ中の銅素線１
８本の平均錆膜厚を測定した。なお、乾湿１サイクルの
都度、上記の水溶液を新品と取り替えた。また、上記の
ガラス容器には、換気用に内径１．８ｍｍφの注射針２
本を備えた蓋を用いた。平均請膜厚は、錆膜除去（塩酸
：純水−１＝１の容積比の水溶液を用いて除去）前後の
重量差から錆の生成量を測定し、その量から膜厚を算出
した。Rust prevention performance: A cable sample with a length of 3 Qcm was cut with a hacksaw and placed vertically in a cylindrical glass container with an inner diameter of 50 mm filled with an aqueous solution with a NHa ion concentration of 1100 pp. Then, the depth of the aqueous solution was kept at 20 cm for one day and IQ for 6 days.
Perform drying and wetting with cm as one cycle, and heat at 60° in a constant temperature bath.
After performing a heat cycle for 8 hours at room temperature and 16 hours at room temperature, the copper wire 1 in the middle part IQ cm of the cable sample was heated.
The average rust film thickness of eight pieces was measured. Note that the above aqueous solution was replaced with a new one after each cycle of drying and wetting. In addition, the above glass container is equipped with a syringe needle 2 with an inner diameter of 1.8 mmφ for ventilation.
A lid with a book was used. The average coating film thickness was determined by measuring the amount of rust formed from the difference in weight before and after removing the rust film (removal using an aqueous solution with a volume ratio of hydrochloric acid: pure water - 1 = 1), and calculating the film thickness from the measured amount.
ポリエチレン 防錆性能Polyethylene rust prevention performance
Claims (1)
秒／１００ｃｃのセルロース繊維製セパレータテープを
施し、その上に銅防錆剤を含有した架橋性ポリエチレン
組成物を押出被覆し、ついで架橋性ポリエチレン組成物
の押出被覆層を加圧下で架橋することを特徴とする架橋
ポリエチレン絶縁架空ケーブルの製造方法。 ２、セパレータテープが、セルロース繊維紙からなるも
のである特許請求の範囲第１項記載の架橋ポリエチレン
絶縁架空ケーブルの製造方法。 ３、セパレータテープが、セルロース繊維と合成有機高
分子繊維との混抄紙である特許請求の範囲第１項記載の
架橋ポリエチレン絶縁架空ケーブルの製造方法。 ４、銅防錆剤が、トリアゾール化合物である特許請求の
範囲第１項乃至第３項のいずれかに記載の架橋ポリエチ
レン絶縁架空ケーブルの製造方法。 ５、トリアゾール化合物が、ベンゾトリアゾールである
特許請求の範囲第４項記載の架橋ポリエチレン絶縁架空
ケーブルの製造方法。[Claims] 1. Directly above the copper conductor, the Gurley tightness is at least 10
sec/100 cc of cellulose fiber separator tape, extrusion coating a crosslinkable polyethylene composition containing a copper rust preventive agent thereon, and then crosslinking the extrusion coating layer of the crosslinkable polyethylene composition under pressure. A method for producing a featured cross-linked polyethylene insulated overhead cable. 2. The method for manufacturing a crosslinked polyethylene insulated overhead cable according to claim 1, wherein the separator tape is made of cellulose fiber paper. 3. The method for manufacturing a crosslinked polyethylene insulated overhead cable according to claim 1, wherein the separator tape is a mixed paper of cellulose fibers and synthetic organic polymer fibers. 4. The method for producing a crosslinked polyethylene insulated overhead cable according to any one of claims 1 to 3, wherein the copper rust preventive agent is a triazole compound. 5. The method for producing a crosslinked polyethylene insulated overhead cable according to claim 4, wherein the triazole compound is benzotriazole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP591786A JPS62165813A (en) | 1986-01-14 | 1986-01-14 | Manufacture of crosslinked polyethylene insulated aerial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP591786A JPS62165813A (en) | 1986-01-14 | 1986-01-14 | Manufacture of crosslinked polyethylene insulated aerial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62165813A true JPS62165813A (en) | 1987-07-22 |
Family
ID=11624246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP591786A Pending JPS62165813A (en) | 1986-01-14 | 1986-01-14 | Manufacture of crosslinked polyethylene insulated aerial cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62165813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128763A (en) * | 2006-11-20 | 2008-06-05 | Viscas Corp | Corrosion test method |
-
1986
- 1986-01-14 JP JP591786A patent/JPS62165813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128763A (en) * | 2006-11-20 | 2008-06-05 | Viscas Corp | Corrosion test method |
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