JPH06251625A - Insulation composition and power cable - Google Patents
Insulation composition and power cableInfo
- Publication number
- JPH06251625A JPH06251625A JP5039094A JP3909493A JPH06251625A JP H06251625 A JPH06251625 A JP H06251625A JP 5039094 A JP5039094 A JP 5039094A JP 3909493 A JP3909493 A JP 3909493A JP H06251625 A JPH06251625 A JP H06251625A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- power cable
- compound
- insulation composition
- dielectric loss
- 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
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/40—Ethylene production
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、誘電損失の小さい絶縁
体となる絶縁組成物、及びこれを絶縁体として用いた電
力ケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating composition which is an insulator having a small dielectric loss, and a power cable using the insulating composition.
【０００２】[0002]
【従来の技術】従来、電力ケーブルやその付属品に用い
られる絶縁体としては、架橋ポリエチレン（ＸＬＰＥ）
が広く用いられている。このＸＬＰＥのベースポリマー
としてのポリエチレン（ＰＥ）には、一般に高圧法で重
合された低密度ＰＥ（ＬＤＰＥ）が使用されている。こ
の高圧法は、エチレンガスを高圧（１０００〜３０００
Ｋｇ／ｃｍ2）に圧縮し、反応管中でＰＥを重合させる
方法であるが、この製造工程中に極微量の不純物が混入
されることがある。このような微量不純物としては、例
えばエチレンガス圧縮シリンダからの潤滑剤不純物、反
応管壁からの不純物などが挙げられる。2. Description of the Related Art Conventionally, a cross-linked polyethylene (XLPE) has been used as an insulator used for a power cable and its accessories.
Is widely used. Low density PE (LDPE) polymerized by a high pressure method is generally used for polyethylene (PE) as a base polymer of this XLPE. This high-pressure method uses ethylene gas at high pressure (1000 to 3000).
This is a method in which PE is polymerized in a reaction tube after being compressed to Kg / cm 2 ), but an extremely small amount of impurities may be mixed in during the manufacturing process. Examples of such trace impurities include lubricant impurities from the ethylene gas compression cylinder and impurities from the reaction tube wall.
【０００３】ところで、この架橋ポリエチレンを用いた
電力ケーブルはＣＶケーブルと呼ばれるもので、一般に
はその電気的ｔａｎδ（誘電正接）が低く、そのため誘
電損失も少ないことからケーブルのエネルギーロスも少
ないものとなっている。By the way, a power cable using this cross-linked polyethylene is called a CV cable, and generally its electrical tan δ (dielectric loss tangent) is low, and therefore the dielectric loss is also small, so that the energy loss of the cable is also small. ing.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記Ｃ
Ｖケーブルにあっても、特に高電圧を送電する場合に
は、すなわち超高圧ＣＶケーブルの使用電界や温度にお
いては、電気的ｔａｎδが上昇し、これに伴って誘電損
失が多くなり、ケーブルのエネルギーロスが増大してし
まうといった問題があった。However, the above-mentioned C
Even in the case of a V cable, particularly when transmitting a high voltage, that is, when the electric field or temperature of the ultra-high voltage CV cable is used, the electrical tan δ is increased, and the dielectric loss is increased accordingly. There was a problem that the loss would increase.
【０００５】[0005]
【課題を解決するための手段】本発明者は前記課題に鑑
み、ＣＶケーブルにおける電気的ｔａｎδの上昇の原因
を究明すべく鋭意研究した結果、詳細理論については未
判明であるものの、ポリエチレンを製造するときに使用
する圧縮機用の潤滑油として、ポリエーテル系のものを
使用すると、前述したｔａｎδの上昇が見られることを
究明し、本発明に至った。In view of the above problems, the present inventor has conducted diligent research to find out the cause of the increase in electrical tan δ in CV cables, and as a result, although the detailed theory is unknown, polyethylene is produced. It was clarified that the above-mentioned increase in tan δ was observed when a polyether type lubricating oil was used as the lubricating oil for the compressor used in the above-mentioned case, and the present invention was accomplished.
【０００６】すなわち、本発明における請求項１記載の
絶縁組成物では、ベースポリマーをポリエチレンとする
絶縁組成物であって、前記ポリエチレンが、そのコンパ
ウンドからの水抽出液を紫外線吸光分析にかけたとき、
３２０ｎｍ付近に吸収が見られないものであることを前
記課題の解決手段とした。請求項２記載の電力ケーブル
では、請求項１記載の絶縁組成物から得られる絶縁体を
用いたことを前記課題の解決手段とした。That is, the insulating composition according to claim 1 of the present invention is an insulating composition having a base polymer of polyethylene, wherein the polyethylene is subjected to ultraviolet absorption analysis of a water extract from the compound,
The fact that absorption is not seen in the vicinity of 320 nm was taken as a means for solving the above problems. In the power cable according to claim 2, the insulator obtained from the insulating composition according to claim 1 is used as a means for solving the problems.
【０００７】紫外線吸光分析にかけたとき、３２０ｎｍ
付近に吸収が見られないポリエチレンとしては、具体的
には、ポリエチレンを製造するときに使用する圧縮機用
の潤滑油として、ポリエーテル系のものでなく炭化水素
系潤滑油を用いたもの、あるいは、潤滑油としてポリエ
ーテル系のものを用いて得られたポリエチレンに、以下
の精製処理を施したものが挙げられる。精製処理として
は、例えばポリエチレンを水に接触させ、水抽出によっ
てポリエチレン中のポリエーテル系化合物を除去すると
いった方法が挙げられる。320 nm when subjected to ultraviolet absorption analysis
As polyethylene which is not absorbed in the vicinity, specifically, as a lubricating oil for a compressor used when producing polyethylene, one using a hydrocarbon type lubricating oil instead of a polyether type lubricating oil, or Polyethylene obtained by using a polyether type lubricant as the lubricating oil is subjected to the following purification treatment. Examples of the purification treatment include a method in which polyethylene is brought into contact with water and the polyether compound in polyethylene is removed by water extraction.
【０００８】[0008]
【作用】本発明者は、ポリエチレンを製造するときに使
用する圧縮機用の潤滑油として、ポリエーテル系のもの
を使用したか否かなど、すなわちポリエーテル系の潤滑
油（以下、潤滑油Ａとする）がポリエチレン中に含まれ
るか否かを微量分析する方法として、種々の方法を検討
した結果、そのコンパウンドからの水抽出液を紫外線吸
光分析にかけたとき、３２０ｎｍ付近に吸収が見られる
ものには潤滑油Ａが含まれており、吸収が見られないも
のには潤滑油Ａが含まれていないことを究明した。そし
て、潤滑油Ａが含まれていない、すなわち３２０ｎｍ付
近に吸収が見られないポリエチレンは、潤滑油Ａを含む
ポリエチレンに比べ、実施例で示すようにそのｔａｎδ
が小さいことが判明した。The present inventor has determined whether or not a polyether-based lubricating oil was used as a lubricating oil for a compressor used when producing polyethylene, that is, a polyether-based lubricating oil (hereinafter, referred to as lubricating oil A). As a result of examining various methods as a method for microanalyzing whether or not is contained in polyethylene, absorption of 320 nm is observed when a water extract from the compound is subjected to ultraviolet absorption analysis. It was determined that the oil containing the lubricant A was contained in the oil, and the oil containing no oil was not contained in the oil containing the oil. Then, polyethylene containing no lubricating oil A, that is, polyethylene having no absorption around 320 nm, has a tan δ value higher than polyethylene containing lubricating oil A as shown in the examples.
Turned out to be small.
【０００９】[0009]
【実施例】ポリエチレンを製造するに際し、エチレンガ
ス圧縮シリンダの潤滑油としてポリエーテル系のもの
（潤滑油Ａ）を用いて製造した低密度ポリエチレンのコ
ンパウンド（比較例品）と、炭化水素系のもの（以下、
潤滑油Ｂとする）を用いて製造した低密度ポリエチレン
のコンパウンド（実施例品）とを用意した。[Example] When producing polyethylene, a low density polyethylene compound (comparative example) produced by using a polyether type lubricant (lubricating oil A) as a lubricating oil for an ethylene gas compression cylinder, and a hydrocarbon type compound (Less than,
Lubricating oil B) was used to prepare a low-density polyethylene compound (Example product).
【００１０】［紫外線吸収分析］得られたコンパウンド
中に、ポリエーテル系化合物が含まれているか否かを分
析するため、コバルトチオシアネート法を用いた定性分
析を以下のようにして実施した。 （測定試料の作製）まず、前記コンパウンドの一部をそ
れぞれ粉砕処理し、粉砕処理物をそれぞれ５００ｇずつ
試料として採取した。次いで、これら試料にそれぞれ１
０００ｇずつ純水を加え、さらに加熱して４８時間還流
抽出処理を行った。還流抽出後、それぞれ濾過を行い、
その濾液１０００ｍｌをエバポレーターを用いて減圧蒸
留し、５０ｍｌにまで正確に濃縮してこれらを測定試料
とした。[Ultraviolet Absorption Analysis] In order to analyze whether the obtained compound contains a polyether compound, a qualitative analysis using the cobalt thiocyanate method was carried out as follows. (Preparation of Measurement Sample) First, a part of the compound was pulverized, and 500 g of the pulverized product was sampled. Then 1 for each of these samples
Pure water was added in an amount of 000 g each, and the mixture was further heated and subjected to reflux extraction treatment for 48 hours. After extraction under reflux, each is filtered,
1000 ml of the filtrate was distilled under reduced pressure using an evaporator, and accurately concentrated to 50 ml to obtain these as measurement samples.
【００１１】（コバルトチオシアン酸アンモニア水溶液
の作製）チオシアン酸アンモニウム［ＮＨ4ＳＣＮ］６.
２ｇと、硝酸コバルト［Ｃｏ（ＮＯ3）2］２.８ｇとを
純水に溶解し、１００ｍｌのコバルトチオシアン酸アン
モニア水溶液を作製した。 （紫外線吸光分析用試料の作製）先に作製した測定試料
５０ｍｌと、コバルトチオシアン酸アンモニア水溶液１
５ｍｌと、塩化ナトリウム（ＮａＣｌ）２０ｇとを分液
ロートに入れ、ＮａＣｌが完全に溶解するまで振とう攪
拌した後、１５分間静置した。次に、分液ロートにそれ
ぞれ１,２-ジクロルエタンを正確に３０ｍｌ加え、１分
間振とう攪拌した後静置し、２層分離させた。次いで、
２層分離させた１,２-ジクロルエタン（下側）を分取
し、無水硫酸ナトリウムを少量加えて脱水した。さら
に、これを濾過して得られた濾液を紫外線吸光分析用試
料とした。(Preparation of Aqueous Cobalt Thiocyanate Aqueous Solution) Ammonium thiocyanate [NH 4 SCN] 6.
2 g and cobalt nitrate [Co (NO 3 ) 2 ] 2.8 g were dissolved in pure water to prepare 100 ml of an aqueous solution of cobalt thiocyanate. (Preparation of Sample for Ultraviolet Absorption Analysis) 50 ml of the measurement sample prepared above and aqueous solution of ammonia cobalt thiocyanate 1
5 ml and 20 g of sodium chloride (NaCl) were placed in a separatory funnel, shaken and stirred until NaCl was completely dissolved, and then left standing for 15 minutes. Next, exactly 30 ml of 1,2-dichloroethane was added to each of the separating funnels, and the mixture was shaken and stirred for 1 minute and allowed to stand still to separate two layers. Then
The 1,2-dichloroethane (lower side) separated into two layers was separated and dehydrated by adding a small amount of anhydrous sodium sulfate. Further, the filtrate obtained by filtering this was used as a sample for ultraviolet absorption analysis.
【００１２】（紫外線吸光分析）得られた２種の紫外線
吸光分析用試料を、日本分光社製の測定機［Ubest-50 U
V/VIS Spectrophotometer］によってその吸光度（吸収
度）を測定した。なお、測定条件としては、波長２００
〜４００ｎｍ、スキャンスピード１００ｎｍ／分、スペ
クトルバンド幅２.０ｎｍとした。実施例品からの試料
の測定結果を図１に、比較例品からの試料の測定結果を
図２に示す。図１より、実施例品では、３２０ｎｍ付近
においてピークが見られなかった。一方、図２より、比
較例品では、３２０ｎｍ付近（３００ｎｍ〜３２０ｎ
ｍ）で小さなピークＰが見られた。(Ultraviolet absorption analysis) Two kinds of the obtained samples for ultraviolet absorption analysis were measured with a measuring instrument manufactured by JASCO Corporation [Ubest-50 U
V / VIS Spectrophotometer] to measure its absorbance. The measurement condition is a wavelength of 200
˜400 nm, scan speed 100 nm / min, and spectral bandwidth 2.0 nm. The measurement result of the sample from the example product is shown in FIG. 1, and the measurement result of the sample from the comparative example product is shown in FIG. From FIG. 1, in the example product, no peak was observed near 320 nm. On the other hand, from FIG. 2, in the comparative example product, the vicinity of 320 nm (300 nm to 320 n
A small peak P was seen in m).
【００１３】［ｔａｎδの測定］次に、実施例品および
比較例品のｔａｎδを以下のようにしてそれぞれ測定し
た。まず、先に作製した各コンパウンド１００重量部に
対し、ＤＣＰ（ジクミルパーオキサイド）２重量部、チ
オビスフェノール系の酸化防止剤０.２重量部を添加
し、混練した後、これらをシートに成形するとともに加
熱し架橋して架橋ポリエチレンシートとした。[Measurement of tan δ] Next, tan δ of the example product and the comparative example product were measured as follows. First, to 100 parts by weight of each compound prepared above, 2 parts by weight of DCP (dicumyl peroxide) and 0.2 parts by weight of a thiobisphenol-based antioxidant were added and kneaded, and then formed into a sheet. Then, it was heated and crosslinked to obtain a crosslinked polyethylene sheet.
【００１４】得られた２種のシートを図３に示す試料１
とし、この試料１の両面にステンレス電極２ａ、２ｂを
当接させ、電極２ｂ側で試料１をアースするとともに、
電極２ｂに測定器３を接続し、この状態で電極２ａに高
電圧を印加してｔａｎδ（誘電正接）を測定した。（た
だし、図３中において試料１の有効部厚さをｔで示す。
また測定条件として、測定温度雰囲気を９０℃とし、印
加ストレスを２０ｋＶ／ｍｍとした。）実施例品のｔａ
ｎδは０.０２２％であり、一方比較例品のｔａｎδは
０.０４１％であった。したがって、３２０ｎｍ付近に
吸収が見られず、潤滑油Ａを含まない実施例品は、比較
例品に比べｔａｎδが小さく、よってこのポリエチレン
を用いた絶縁組成物は誘電損失が小さくなることが確認
された。The two types of sheets obtained are shown in FIG.
The stainless electrodes 2a and 2b are brought into contact with both surfaces of the sample 1, and the sample 1 is grounded on the side of the electrode 2b.
The measuring device 3 was connected to the electrode 2b, and a high voltage was applied to the electrode 2a in this state to measure tan δ (dielectric loss tangent). (However, in FIG. 3, the effective portion thickness of Sample 1 is indicated by t.
As measurement conditions, the measurement temperature atmosphere was 90 ° C., and the applied stress was 20 kV / mm. ) Example product ta
nδ was 0.022%, while the tan δ of the comparative product was 0.041%. Therefore, it was confirmed that absorption was not observed near 320 nm and that the example product containing no lubricating oil A had a smaller tan δ than the comparative example product, and therefore the insulating composition using this polyethylene had a small dielectric loss. It was
【００１５】また、実施例品の低密度ポリエチレンコン
パウンドに、有機過酸化物（ＤＣＰ）、酸化防止材、充
填材、着色材等を適宜添加し、本発明の絶縁組成物を得
た。そして、このような絶縁組成物を所望する形状、す
なわち電力ケーブルやこれの付属品の製造に際し、これ
に一体的に組み込まれる各種絶縁体として所望形状に成
形した後、架橋塔で加熱することにより、絶縁体である
架橋ポリエチレン（ＸＬＰＥ）とした。このような絶縁
体を用いてなる電力ケーブルにあっては、絶縁体のｔａ
ｎδ（誘電正接）が小さいことから、ケーブル自体の誘
電損失が小さいものとなった。Further, an organic peroxide (DCP), an antioxidant, a filler, a coloring material and the like were appropriately added to the low density polyethylene compound of the example product to obtain an insulating composition of the present invention. Then, by forming such an insulating composition into a desired shape, that is, in the case of manufacturing a power cable or an accessory thereof, after molding into a desired shape as various insulators integrally incorporated therein, by heating in a crosslinking tower, , And cross-linked polyethylene (XLPE) which is an insulator. In a power cable using such an insulator, ta of the insulator
Since nδ (dielectric loss tangent) was small, the dielectric loss of the cable itself was small.
【００１６】[0016]
【発明の効果】以上説明したように本発明における請求
項１記載の絶縁組成物は、コンパウンドからの水抽出液
を紫外線吸光分析にかけたとき、３２０ｎｍ付近に吸収
が見られないポリエチレンをベースポリマーとするもの
であるから、ポリエチレンがポリエーテル系の化合物を
不純物として含まず、したがって該ポリエーテル系化合
物に起因してｔａｎδ（誘電正接）が大きくなるのを抑
さえることができ、これにより誘電損失の小さい絶縁体
を製造し得るものとなる。請求項２記載の電力ケーブル
は、前記絶縁組成物から得られる、誘電損失の小さい絶
縁体を用いたものであるから、電力ケーブルとしてその
エネルギーロスが少ないものとなる。また、このように
エネルギーロスが少ないことから、本発明の電力ケーブ
ルは、超高電圧が印加される超高圧ＣＶケーブル等に好
適に用いられるものとなる。As described above, the insulating composition according to the first aspect of the present invention has polyethylene as a base polymer, which shows no absorption around 320 nm when the water extract from the compound is subjected to ultraviolet absorption analysis. Since polyethylene does not contain a polyether compound as an impurity, it is possible to suppress an increase in tan δ (dielectric loss tangent) due to the polyether compound. It allows the production of small insulators. Since the power cable according to the second aspect uses an insulator having a small dielectric loss, which is obtained from the insulating composition, the power cable has a small energy loss. Further, since the energy loss is small as described above, the power cable of the present invention is suitable for use in an ultrahigh voltage CV cable to which an ultrahigh voltage is applied.
【図１】 実施例品の紫外線吸光分析結果を示す図。FIG. 1 is a view showing a result of ultraviolet absorption analysis of an example product.
【図２】 比較例品の紫外線吸光分析結果を示す図。FIG. 2 is a view showing a result of ultraviolet absorption analysis of a comparative example product.
【図３】 誘電正接の測定法を説明するための図。FIG. 3 is a diagram for explaining a method of measuring dielectric loss tangent.
１…試料、２ａ、２ｂ…ステンレス電極、３…測定器。 1 ... Sample, 2a, 2b ... Stainless electrode, 3 ... Measuring instrument.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中司 徹 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 松井 研二 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 中山 四郎 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 高橋 享 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 谷田 光隆 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 丹羽 利夫 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toru Nakaji 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Kenji Matsui 1-5-1, Kiba, Koto-ku, Tokyo Shares Company Fujikura (72) Inventor Shiro Nakayama 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Takashi Takahashi 1-1-5, Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Mitsutaka Yata 1-5-1, Kiba, Koto-ku, Tokyo Within Fujikura Ltd. (72) Inventor Toshio Niwa 1-5-1, Kiba, Koto-ku, Tokyo Within Fujikura Ltd.
Claims (2)
縁組成物において、前記ポリエチレンが、そのコンパウ
ンドからの水抽出液を紫外線吸光分析にかけたとき、３
２０ｎｍ付近に吸収が見られないものであることを特徴
とする絶縁組成物。1. An insulating composition comprising polyethylene as a base polymer, wherein the polyethylene is 3 when the water extract from the compound is subjected to ultraviolet absorption spectrometry.
An insulating composition, which has no absorption around 20 nm.
絶縁体を用いた電力ケーブル。2. A power cable using an insulator obtained from the insulating composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039094A JPH06251625A (en) | 1993-02-26 | 1993-02-26 | Insulation composition and power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039094A JPH06251625A (en) | 1993-02-26 | 1993-02-26 | Insulation composition and power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06251625A true JPH06251625A (en) | 1994-09-09 |
Family
ID=12543497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5039094A Pending JPH06251625A (en) | 1993-02-26 | 1993-02-26 | Insulation composition and power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06251625A (en) |
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| JP2013510915A (en) * | 2009-11-11 | 2013-03-28 | ボレアリス エージー | Polymer composition and power cable comprising the same |
| JP2013510914A (en) * | 2009-11-11 | 2013-03-28 | ボレアリス エージー | POLYMER COMPOSITION CONTAINING POLYOLEFIN PRODUCED IN HIGH PRESSURE METHOD, HIGH PRESSURE METHOD AND ARTICLE |
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| US9595374B2 (en) | 2010-11-03 | 2017-03-14 | Borealis Ag | Polymer composition and a power cable comprising the polymer composition |
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-
1993
- 1993-02-26 JP JP5039094A patent/JPH06251625A/en active Pending
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| US11078312B2 (en) | 2009-11-11 | 2021-08-03 | Borealis Ag | Crosslinkable polymer composition and cable with advantageous electrical properties |
| JP2013510914A (en) * | 2009-11-11 | 2013-03-28 | ボレアリス エージー | POLYMER COMPOSITION CONTAINING POLYOLEFIN PRODUCED IN HIGH PRESSURE METHOD, HIGH PRESSURE METHOD AND ARTICLE |
| JP2016020505A (en) * | 2009-11-11 | 2016-02-04 | ボレアリス エージー | Polymer composition and power cable comprising the polymer composition |
| US9365708B2 (en) | 2009-11-11 | 2016-06-14 | Borealis Ag | Cable and production process thereof |
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| US10875939B2 (en) | 2009-11-11 | 2020-12-29 | Borealis Ag | Polymer composition comprising a polyolefin produced in a high pressure process, a high pressure process and an article |
| US10032543B2 (en) | 2010-11-03 | 2018-07-24 | Borealis Ag | Polymer composition and a power cable comprising the polymer composition |
| US10950366B2 (en) | 2010-11-03 | 2021-03-16 | Borealis Ag | Polymer composition and a power cable comprising the polymer composition |
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