JPH02305837A - Electrical insulation resin composition and power cable prepared therefrom - Google Patents
Electrical insulation resin composition and power cable prepared therefromInfo
- Publication number
- JPH02305837A JPH02305837A JP12588389A JP12588389A JPH02305837A JP H02305837 A JPH02305837 A JP H02305837A JP 12588389 A JP12588389 A JP 12588389A JP 12588389 A JP12588389 A JP 12588389A JP H02305837 A JPH02305837 A JP H02305837A
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- acrylic acid
- weight
- power cable
- parts
- 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
- 239000011342 resin composition Substances 0.000 title claims abstract description 34
- 238000010292 electrical insulation Methods 0.000 title abstract 2
- 239000012212 insulator Substances 0.000 claims abstract description 8
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract 6
- -1 3,5-di-t-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 5
- 240000005572 Syzygium cordatum Species 0.000 abstract description 17
- 235000006650 Syzygium cordatum Nutrition 0.000 abstract description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 16
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000203 mixture Substances 0.000 abstract description 13
- 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 abstract description 6
- 239000004698 Polyethylene Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 2
- 239000003431 cross linking reagent Substances 0.000 abstract description 2
- 239000004716 Ethylene/acrylic acid copolymer Substances 0.000 abstract 3
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- 230000006866 deterioration Effects 0.000 description 9
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 7
- 229920001684 low density polyethylene Polymers 0.000 description 7
- 239000004702 low-density polyethylene Substances 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 description 6
- 239000004703 cross-linked polyethylene Substances 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229920005601 base polymer Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- BHIIOLWIZLICII-UHFFFAOYSA-N 2-butyl-5-methylphenol Chemical compound CCCCC1=CC=C(C)C=C1O BHIIOLWIZLICII-UHFFFAOYSA-N 0.000 description 2
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- PMAAOHONJPSASX-UHFFFAOYSA-N 2-butylperoxypropan-2-ylbenzene Chemical compound CCCCOOC(C)(C)C1=CC=CC=C1 PMAAOHONJPSASX-UHFFFAOYSA-N 0.000 description 1
- 241000834695 Auchenoglanis occidentalis Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- NJIDLJRHMJCJIV-UHFFFAOYSA-N C.C(CC)(=O)O Chemical compound C.C(CC)(=O)O NJIDLJRHMJCJIV-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、電気絶縁性樹脂組成物およびこの電気絶縁
性樹脂組成物を絶縁体とした電カケープルに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrically insulating resin composition and an electric cable using the electrically insulating resin composition as an insulator.
ポリエチレンの優れた絶縁性を利用し、架橋により熱的
特性を向上せしめた架橋ポリエチレン絶縁型カケープル
が従来より広く使用されている。Cross-linked polyethylene insulating cables, which utilize the excellent insulating properties of polyethylene and have improved thermal properties through cross-linking, have been widely used.
（発明が解決しようとする課題）
しかしながら、この架橋ポリエチレン絶縁型カケープル
にあって、このケーブル特有の現象として絶縁体中の水
分と局部的異常電界の存在によって水トリーが発生し、
ケーブルの絶縁性能が低下する問題がある。(Problem to be Solved by the Invention) However, in this cross-linked polyethylene insulated cable, water trees occur due to moisture in the insulator and the presence of a local abnormal electric field, which is a phenomenon unique to this cable.
There is a problem that the insulation performance of the cable deteriorates.
水トリーの発生原因は、疎水性ポリマーであるポリエチ
レン中に＠部的異常電界があると、そこに水分が集中す
ることによって起こると考えられる。また、水トリーの
進行は水分が架橋ポリエチレン中に注入されるとともに
、酸素、熱、水分中のイオン等によって架橋ポリエチレ
ン中に酸化劣化した部分が生じ、この酸化劣化部分を拠
点にして再び水分が注入される過程を繰り返して進むも
のと考えられる。The cause of water trees is thought to be that when there is a local abnormal electric field in polyethylene, which is a hydrophobic polymer, water concentrates there. In addition, as water tree progresses, moisture is injected into the cross-linked polyethylene, and oxidized and degraded areas are created in the cross-linked polyethylene due to oxygen, heat, ions in the moisture, etc., and this oxidized and degraded area is used as a base for moisture to return to the cross-linked polyethylene. It is thought that the process of being injected is repeated.
この発明では、エチレン−アクリル酸共巾合体く以下、
ＦＡＡ樹脂と略称する。）またはこのＦＡＡ樹脂と低密
度ポリエチレンとの混合物であって、そのアクリル酸含
有量が０．５〜１０重量％である樹脂組成物に、酸化劣
化防止剤としてペンタ丁すスリブル−テトラ１ス（３−
（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）
プロピオネート）メタン（以上、１ペンタエリスリチル
」と略称する。）を添加した電気絶縁性樹脂組成物を絶
縁体とすることにより、水トリーの発生およびその進行
を防止するようにした。In this invention, the ethylene-acrylic acid crosslinker has the following:
It is abbreviated as FAA resin. ) or a mixture of this FAA resin and low-density polyethylene, the resin composition having an acrylic acid content of 0.5 to 10% by weight, is added with pentacholine-sribble-tetra1s ( 3-
(3,5-di-t-butyl-4-hydroxyphenyl)
By using an electrically insulating resin composition to which methane (propionate) (hereinafter abbreviated as 1pentaerythrityl) was added as an insulator, the occurrence and progression of water trees was prevented.
ト△Δ樹脂は分子内に極性の大きいカルボン酸阜を有し
て親水性であり、これによって局部的異常電界部に水分
が集中することが防止され、水トリーの発生が防止され
る。また、［ペンタエリスリチル１は耐老化性の良い酸
化劣化防止剤であり、これによって樹脂の部分的な酸化
劣化が抑えられ、水トリーの進行が阻止される。The ΔΔ resin has a highly polar carboxylic acid group in its molecule and is hydrophilic, which prevents moisture from concentrating in the local abnormal electric field area and prevents water trees from occurring. In addition, [Pentaerythrityl 1] is an oxidative deterioration inhibitor with good aging resistance, thereby suppressing partial oxidative deterioration of the resin and inhibiting the progress of water tree.
以下、この発明の詳細な説明する。The present invention will be explained in detail below.
この発明の電気絶縁性樹脂組成物のベースポリマーとな
る樹脂組成物は、ト△Ａ樹脂甲独もしくはＥ△八へ脂と
低密度ポリエブレン（Ｌ ｌ） Ｐ ［Ｅ ）との８合
物からなり、この樹脂組成物中のアクリル酸含０４が０
．５〜１０重Ｍ％、好ましくＣよ０５〜５重量％の範囲
にあるものである。ずｌ、−１わら、ＥＡＡ樹脂単独か
らなるものでは、ＥＡＡ樹脂中のアクリル酸モノマー共
重合量が０．５〜１０重世％の範囲のＦＡＡ樹脂が選ば
れ、ＥＡＡ樹脂と低密度ポリエチレンとの混合物からな
るものでは、混合物全量中のアクリル酸含有量が０．５
〜１０単δ％の範囲に収まるようにＦＡＡ樹脂の種類お
よび低密度ポリエチレンとの配合比を定めればよい。The resin composition serving as the base polymer of the electrically insulating resin composition of the present invention is composed of an 8-composite of TRI resin A resin or EΔ 8 resin and low density polyethylene (L l) P [E ). , the acrylic acid content in this resin composition is 0.
．． It is in the range of 5 to 10% by weight, preferably 05 to 5% by weight. Zl, -1 straw, for those consisting of EAA resin alone, an FAA resin in which the amount of acrylic acid monomer copolymerized in the EAA resin is in the range of 0.5 to 10% is selected, and the EAA resin and low density polyethylene are selected. In the case where the acrylic acid content in the total amount of the mixture is 0.5
The type of FAA resin and the blending ratio with low-density polyethylene may be determined so as to fall within the range of ~10 unit δ%.
この樹脂組成物中のアクリル酸含有量が０．５重量％未
満では、水トリー防止効果がほとんど得られず、また１
０１１％を越えると得られる組成物の電気特性（例えば
、誘電損失、 ｔａｎさ）が悪化して不都合である。If the acrylic acid content in the resin composition is less than 0.5% by weight, almost no water tree prevention effect can be obtained, and
If it exceeds 0.011%, the electrical properties (eg, dielectric loss, tanness) of the resulting composition will deteriorate, which is disadvantageous.
このベースポリマーとなるｉ４［１１［１成物には、酸
化劣化防止剤どして必ず１゛ペンタエリスリチル」が添
加される。この［ペンタエリスリチル」の添加けはベー
スポリマーとなる樹脂組成物１００ｆｆｉ ｆｆ１部に
対して０．０５〜０．３重量部とされる。ｏ、ｏｂ重Ｍ
部未満では添加の効果が得られず樹脂の酸化劣化を防止
することができず水トリーの進行を効果的に停止させる
ことができなくなり、また０、３重量部を越えて添加し
ても効果の増大がもはや得られず、不経流でもある。こ
の［ペンタエリスリデル−１としては、例えばヂバガイ
ギー社から商品名”′イルガノックス１０１０ ”とし
て市販されているｂのなどが使用できる。1゛pentaerythrityl'' as an oxidative deterioration inhibitor is always added to the base polymer i4[11[1 composition]. The amount of [pentaerythrityl] to be added is 0.05 to 0.3 parts by weight per 100 parts of the resin composition serving as the base polymer. o, ob heavy M
If the amount is less than 0.3 parts by weight, the effect of addition will not be obtained and the oxidative deterioration of the resin will not be prevented, making it impossible to effectively stop the progress of water trees. An increase in the amount of fluid is no longer obtained, and there is no flow. As this pentaerythridel-1, for example, b commercially available from Diba Geigy under the trade name "Irganox 1010" can be used.
また、この発明の電気絶縁性樹脂組成物にあっては、［
ペンタエリスリチル」以外の酸化劣化防止剤を「ペンタ
エリスリチル」と併用することができ、例えば４．４′
−チオビス（６−ｔ−ブチル−３−メチルフェノールや
ビス〔２〜メチル−４−（３−ｎ−アルキル（Ｃ１２ま
たはＣｌ４）チオプロピオニルオキシ）−５−ｔ−ブチ
ルフェニル〕スルフィドなどを併用することができる。Further, in the electrically insulating resin composition of the present invention, [
Oxidative deterioration inhibitors other than "Pentaerythrityl" can be used in combination with "Pentaerythrityl", for example, 4.4'
- Use in combination with thiobis(6-t-butyl-3-methylphenol or bis[2-methyl-4-(3-n-alkyl (C12 or Cl4) thiopropionyloxy)-5-t-butylphenyl] sulfide, etc. be able to.
これらの酸化劣化防止剤を「ペンタエリスリプル」と併
用する場合の添加通は酸化劣化防止剤総けとしてベース
ポリマーとなる樹脂組成物１００ｆＪ１部に対して０．
２〜０．４重呈部とすることが好ましい。When these oxidative deterioration inhibitors are used in combination with "Pentaerythripple", the amount of the oxidative deterioration inhibitors as a whole is 0.0.
It is preferable to have 2 to 0.4 overlapping parts.
また、この発明の電気絶縁性樹脂組成物は、架橋されて
いてもよく、また未架橋であってもよい。Further, the electrically insulating resin composition of the present invention may be crosslinked or uncrosslinked.
これの架橋には、ジクミルバーオキ１１イド、１．−ブ
ヂルクミルバーオキザイド、１．３−ビス−（ｔ−ブヂ
ルバーオキシイソブロビル）−ベンゼンなどの有機過酸
化物からなる架橋剤が用いられ、ベースポリマーとなる
樹脂組成物１ｏｏｉ ｍ部に対して１．５〜３重邑部程
度が添加される。For cross-linking, dicumyl peroxide 11ide, 1. - A crosslinking agent consisting of an organic peroxide such as butylcumyl peroxide and 1,3-bis-(t-butyl peroxyisobrobyl)-benzene is used, and 10 m parts of the resin composition to be the base polymer is used. Approximately 1.5 to 3 bubu is added to that amount.
さらに、この発明の電気絶縁性樹脂組成物には、必要に
応じて種々の添加剤を適宜添加することができる。Furthermore, various additives can be appropriately added to the electrically insulating resin composition of the present invention as required.
また、この発明の電カケープルは、上記電気絶縁性樹脂
組成物からなる絶縁体を有するものであって、導体上に
直接または内部半導電層などを介しで押出被覆法などに
よって電気絶縁性樹脂組成物からなる絶縁体を形成した
ものである。Furthermore, the electrical cable of the present invention has an insulator made of the above electrically insulating resin composition, and the electrically insulating resin composition is coated directly on the conductor or via an internal semiconductive layer or the like by an extrusion coating method. It is made of an insulator made of material.
このような電カケープルにあっては上述の理由により水
トリーの発生およびその進行が防止され、ケーブルの絶
縁性能が低下するなどの不都合が生じない。In such a power cable, the occurrence and progression of water trees are prevented for the reasons mentioned above, and problems such as deterioration of the insulation performance of the cable do not occur.
（実施例１）
［二Ａ Ａ樹脂（メルトインデックス１１．アクリル酸
含有に４重Ｇ％） １００重川部用ジクミルパーオキ
サイド２手量部、「ペンタエリスリチル」０．１５重間
部を添加して混練し、この発明の電気絶縁性樹脂組成物
を得た。(Example 1) [2A A resin (melt index 11. Contains acrylic acid and 4% by weight) 2 parts by weight of dicumyl peroxide for 100 parts and 0.15 parts by weight of "pentaerythrityl" are added The mixture was kneaded to obtain an electrically insulating resin composition of the present invention.
（実施例２〜５）
低密度ポリエチレン（メルトインデックス３）に対して
ＥＡＡ樹脂（メルトインデックス５．アクリル酸含有量
２０重量％）を種々の割合で混合し、この混合物全体中
のアクリル酸含有量が０．５層Ｍ％、２重Ｆ＆％、５重
量％、１０ ｆｆｆｆ１％（７）樹脂組成物を冑、この
樹脂組成物１００重量部に対してジクミルパーオキサイ
ド２重石部、「ペンタエリスリデルＪ Ｏ，１５重量
部を添加して混練し、この発明の電気絶縁性能樹脂組成
物を得た。(Examples 2 to 5) EAA resin (melt index 5, acrylic acid content 20% by weight) was mixed with low density polyethylene (melt index 3) in various proportions, and the acrylic acid content in the entire mixture was determined. 0.5 layer M%, double layer F&%, 5 weight%, 10 ffff1% (7) The resin composition was mixed with 100 parts by weight of this resin composition, dicumyl peroxide double layer part, "pentaeryth" 15 parts by weight of Liddell J O was added and kneaded to obtain an electrically insulating resin composition of the present invention.
（比較例１〜３）
低密度ポリエチレン（メルトインデックス３）に対して
ＥＡ八へｆＡ１（メルトインデックス５．アクリル酸含
有量２０川准％）を種々の割合で混合し、この混合物全
体中のアクリル義金Ｔｈ’ｆｊ）が０重Ｒ％、０．３重
Ｒ％、１５５手量の樹脂組成物を得、この樹脂組成物１
００重量部に対してジクミルパー ゛オキサイド２重量
部、４．４′−チオビス（６−１−ブチル−３−メチル
フェノール） ０．１５１山部、ビス（２−メチル−
４−（３−ｎ−アルキル（Ｃ１７またはＣＭ）チオプロ
ピオニルオキシ）−５−ｔ−ブチルフェニル）スルフィ
ド０．１５ 重ｆｌｕ部を添加して混練し、樹脂組成物
を得た。(Comparative Examples 1 to 3) Low-density polyethylene (melt index 3) was mixed with EA8 fA1 (melt index 5, acrylic acid content 20%) in various proportions, and the acrylic acid in the entire mixture was Yikin Th'fj) obtained a resin composition with a weight of 0 weight R%, 0.3 weight R%, and a weight of 155, and this resin composition 1
00 parts by weight, 2 parts by weight of dicumyl peroxide, 0.151 parts by weight of 4.4'-thiobis(6-1-butyl-3-methylphenol), 0.151 parts by weight of bis(2-methyl-
0.15 parts by weight of 4-(3-n-alkyl (C17 or CM) thiopropionyloxy)-5-t-butylphenyl) sulfide was added and kneaded to obtain a resin composition.
（比較例４〜５）
低密度ポリエチレン（メルトインデックス３）に対して
ＥＡＡ樹脂（メルトインデックス５．アクリル酸含有た
２０重涜％）を種々の割合で混合し、この混合物全体中
のアクリル義金り量が２手量％、５重ω％の樹脂組成物
を得、この樹脂組成物１００重吊部にジクミルパーオキ
サイド２重量部、４．４′ −チオビス（６−１−ブチ
ル−３−メチルフェノール）０．３重量部を添加して混
練し、樹脂組成物を青た。(Comparative Examples 4 to 5) EAA resin (melt index 5, containing 20% acrylic acid) was mixed with low density polyethylene (melt index 3) in various proportions, and the acrylic metal in the whole mixture was A resin composition having a weight of 2% by weight and 5% by weight was obtained, and 2 parts by weight of dicumyl peroxide and 4.4'-thiobis(6-1-butyl-3 -Methylphenol) was added and kneaded to give a blue resin composition.
（実施例６〜８ ）
低ｉＷ度ポリＴ、 ′１−レン（メルトインデックス３
）に対して［Δ△樹Ｉｆｆ（メルトインデックス５．ア
クリル酸含有量２０Φｔ％〉を混合し、アクリル酸含有
Ｍ４重量％の樹脂組成物を得、この樹脂組成物１００重
に部に対してジクミルパーオキサイド２ｆｆｉｆｆ１部
および１ペンタエリスリデルＪ０．０５ＩＩｆｒ部、０
．３手量部、０．５市ｆ部添加して混練し、樹脂組成物
を得た。(Examples 6 to 8) Low iW degree poly T, '1-lene (melt index 3
) was mixed with [ΔΔ Tree Iff (melt index: 5, acrylic acid content: 20Φt%) to obtain a resin composition containing 4% by weight of acrylic acid. 1 part of Milperoxide 2ffiff and 1 part of Pentaerythridel J0.05IIfr, 0
．． 3 parts by weight and 0.5 parts by weight were added and kneaded to obtain a resin composition.
これらの実施例および比較例で得られた樹脂組成物を１
６０℃、４０分の条件でプレス成形し、以下に示す水ト
リル試験、誘電正接（ｔａｎδ）測定試験を行った。そ
の結果を第１表に示した。The resin compositions obtained in these Examples and Comparative Examples were
Press molding was performed at 60° C. for 40 minutes, and the following water trill test and dielectric loss tangent (tan δ) measurement test were conducted. The results are shown in Table 1.
このプレス成形後、それぞれのゲル分率の測定を１００
℃のキシレンに２４時間浸漬して行ったところ、いずれ
も８０％以上であり、架橋されていることが判った。After this press molding, the gel fraction of each was measured at 100
When immersed in xylene at ℃ for 24 hours, it was found that the crosslinking was 80% or more in all cases, indicating that they were crosslinked.
水トリー試験は、第１図に示したように厚さ３層の試料
１の一側面に導電性塗料の塗布による接地ｉｆｆ極２を
設けるとともに試料１の他側面には水槽３を形成して水
電極４を設け、これら接地電極２、水Ｍ極４ ｆｆ１ｌ
ニ１ Ｋｔｌｚ 、 １０ＫＶ（７）ｆｆｉ圧ヲ圧加印
加るように構成し、８０℃オーブン中で上記電圧を３０
日間印加後、試料１を煮８Ｉ染色して水トリーを観察し
た。５０μｍ以上の水トリー発生密度を１２察し、比較
例１の試料（架橋ポリエチレンのみ）の発生数ＩＱＯに
対する相対数として表示した。In the water tree test, as shown in Fig. 1, a grounding IF pole 2 is provided on one side of a three-layered sample 1 by applying conductive paint, and a water tank 3 is formed on the other side of the sample 1. A water electrode 4 is provided, and these ground electrodes 2 and water M poles 4 ff1l
It was configured to apply a pressure of 1 Ktlz and 10 KV (7) ffi, and the voltage was increased to 30 KV in an 80°C oven.
After the application for one day, sample 1 was boiled and stained with 8I to observe the water trees. The occurrence density of water trees of 50 μm or more was measured at 12, and expressed as a relative number to the number IQO of the sample of Comparative Example 1 (crosslinked polyethylene only).
誘電圧接＜ ｔａｎさ）測定試験は、厚さ０．５履のシ
ートを試料とし−１これに５０Ｈ２，１にＶの電圧を印
加し、シェーリングブリッジにより測定した。In the dielectric voltage contact (tan) measurement test, a sheet with a thickness of 0.5 mm was used as a sample, a voltage of 50H2,1 V was applied to it, and the measurement was performed using a Schering bridge.
第 １ 表
１）［ペンタエリスリデル、１
２）４，４°−チオビス（６−ｔ−ブチル−３−メチル
フェノール）０．１５重置部＋ビス〔２−メチル−４−
（３−ｎ−アルキル（Ｃ１□またはＣ１４）チオプロピ
オニルオキシ）−Ｓ−ｔ−ブチルフェニル〕スルフィド
０．１５ｆｆｉ１部３） ４，４°−チオビス（６−
ｔ−、ブチル−３−メチルフェノール）第１表から、こ
の発明の電気絶＄１′竹樹脂組成物は水トリーの発生が
権めて少なく、°３１気特性の低−トがほとｌυどない
ことが判る。Table 1 1) [Pentaerythridel, 1 2) 4,4°-thiobis(6-t-butyl-3-methylphenol) 0.15 overlapped parts + bis[2-methyl-4-
(3-n-alkyl(C1□ or C14)thiopropionyloxy)-S-t-butylphenyl]sulfide 0.15ffi1 part3) 4,4°-Thiobis(6-
From Table 1, it can be seen that the electrolytic bamboo resin composition of the present invention has extremely low occurrence of water trees, and has almost no water trees with low temperature properties. I know what's going on.
以上説明したように、この発明の電気絶縁性樹脂組成物
は、エチレン−アクリル酸共！■合体またはこれと低密
度ポリエチレンとの混合物であって、そのアクリル酸含
有量が０．５〜１０重量％である組成物に、ペンタエリ
スリチル−テトラキス〔３−（３，５−−ジ−ｔ−ブチ
ル−４−ヒドロキシフェニル）プロピオネートコメタン
が添加されてなるしのであり、またこの発明の電力））
−プル１よこの電気絶縁性樹脂組成物からなる絶縁体を
有するものであるので、水トリーの発生がなく、しかし
電気特性の良好な組成物が得られ、絶縁性能の低下のな
い電カケープルが得られる。As explained above, the electrically insulating resin composition of the present invention contains ethylene-acrylic acid! (2) Pentaerythrityl-tetrakis [3-(3,5-di- t-Butyl-4-hydroxyphenyl)propionate comethane is added, and the power of this invention))
- Since it has an insulator made of an electrically insulating resin composition on the side of the pull 1, a composition that does not cause water trees but has good electrical properties can be obtained, and an electrical cable without deterioration in insulation performance can be obtained. can get.
第１図は、実施例における水トリー試験のための装置を
示す概略構成図である。FIG. 1 is a schematic configuration diagram showing an apparatus for a water tree test in an example.
Claims (2)
度ポリエチレンとの混合物であつて、そのアクリル酸含
有後が０．５〜１０重量％である組成物に、ペンタエリ
スリチル−テトラキス〔３−（３，５−ジ−ｔ−ブチル
−４−ヒドロキシフェニル）プロピオネート〕メタンが
添加されてなる電気絶縁性樹脂組成物。(1) Pentaerythrityl-tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl)propionate] An electrically insulating resin composition to which methane is added.
度ポリエチレンとの混合物であって、そのアクリル酸含
有量が０．５〜１０重量％である組成物に、ペンタエリ
スリチル−テトラキス（３−（３，５−ジ−ｔ−ブチル
−４−ヒドロキシフェニル）プロピオネート〕メタンが
添加されてなる電気絶縁性樹脂組成物を絶縁体とする電
力ケーブル。(2) Pentaerythrityl-tetrakis (3- (3,5-di-t-butyl-4-hydroxyphenyl)propionate] A power cable whose insulator is an electrically insulating resin composition to which methane is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12588389A JPH02305837A (en) | 1989-05-19 | 1989-05-19 | Electrical insulation resin composition and power cable prepared therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12588389A JPH02305837A (en) | 1989-05-19 | 1989-05-19 | Electrical insulation resin composition and power cable prepared therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02305837A true JPH02305837A (en) | 1990-12-19 |
Family
ID=14921284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12588389A Pending JPH02305837A (en) | 1989-05-19 | 1989-05-19 | Electrical insulation resin composition and power cable prepared therefrom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02305837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038211A (en) * | 1989-06-03 | 1991-01-16 | Fujikura Ltd | Power cable |
-
1989
- 1989-05-19 JP JP12588389A patent/JPH02305837A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038211A (en) * | 1989-06-03 | 1991-01-16 | Fujikura Ltd | Power cable |
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