JPH01144510A - Electric wire/cable - Google Patents
Electric wire/cableInfo
- Publication number
- JPH01144510A JPH01144510A JP30429687A JP30429687A JPH01144510A JP H01144510 A JPH01144510 A JP H01144510A JP 30429687 A JP30429687 A JP 30429687A JP 30429687 A JP30429687 A JP 30429687A JP H01144510 A JPH01144510 A JP H01144510A
- Authority
- JP
- Japan
- Prior art keywords
- cover layer
- bow
- parts
- propionate
- conductor
- 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
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 229920000098 polyolefin Polymers 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 239000011342 resin composition Substances 0.000 claims abstract description 5
- MZHULIWXRDLGRR-UHFFFAOYSA-N tridecyl 3-(3-oxo-3-tridecoxypropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCC MZHULIWXRDLGRR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010894 electron beam technology Methods 0.000 abstract description 2
- 229910000077 silane Inorganic materials 0.000 abstract description 2
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- 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
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 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
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、ボウタイトリーの発生を抑止でき、しかも耐
熱性に優れた電線・ケーブルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to electric wires and cables that can suppress the occurrence of bow tie tree and have excellent heat 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、電気絶縁性および耐熱性に優れ
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、水トリーによる絶縁劣化を生じる
ことが認められている。したがって、電線・ケーブルの
信頼性を向上させるためには、水トリー、ボウタイトリ
ーの発生を如何に抑制するかが大きな課題である。[Prior Art] Polyolefin, especially so-called cross-linked polyethylene, which is made by cross-linking polyethylene, is widely used as an insulating material for electric wires and cables because of its excellent electrical insulation and heat resistance. It is recognized that when used in wet or wet conditions, insulation may deteriorate due to water treeing. Therefore, in order to improve the reliability of electric wires and cables, a major issue is how to suppress the occurrence of water trees and bow trees.
一方、架橋ポリオレフィンには熱老化を防止するために
、酸化防止剤を添加することが一般的であり、従来は4
,4′ −チオビス(6−t−ブチル−3−メチルフェ
ノール)が多用されている。On the other hand, it is common to add antioxidants to crosslinked polyolefins to prevent heat aging;
, 4'-thiobis(6-t-butyl-3-methylphenol) is frequently used.
[発明が解決しようとする問題点コ
しかしながら、4.4’ −チオビス(6−t−ブチル
−3−メチルフェノール)は、ポリオレフィンとの相溶
性が良くないにもかかわらず、耐熱性保持のため、通常
ポリオレフィン100重量部に対して0.2重量部以上
添加され、又、融点が161℃と高いため相溶限度を越
えた分がブルームすることにより、ボウタイトリーの核
になる懸念がある。[Problems to be Solved by the Invention]However, 4,4'-thiobis(6-t-butyl-3-methylphenol) has poor compatibility with polyolefins, but it is difficult to maintain heat resistance. Usually, 0.2 parts by weight or more is added to 100 parts by weight of polyolefin, and since the melting point is as high as 161° C., there is a concern that the amount exceeding the compatibility limit will bloom and become the nucleus of bow tree.
本発明は、上記に基づいてなされたもので、耐ボウタイ
トリー性及び耐熱老化性の双方に優れた電線・ケーブル
の提供を目的とするものである。The present invention has been made based on the above, and aims to provide electric wires and cables that are excellent in both bow tie resistance and heat aging resistance.
[発明の概要]
本発明の電線・ケーブルは、ポリオレフンン100重量
部に対し、酸化防止剤としてジートリデシル−チオ−ジ
−プロピオネートを0.05〜3重量部含有する樹脂組
成物からなる被覆層が導体外周に形成され、架橋されて
いることを特徴とするものである。[Summary of the Invention] The electric wire/cable of the present invention has a coating layer made of a resin composition containing 0.05 to 3 parts by weight of ditridecyl-thio-di-propionate as an antioxidant per 100 parts by weight of polyolefin. It is characterized by being formed on the outer periphery and being crosslinked.
本発明において、ポリオレフィンとしては、低密度ポリ
エチレン、中密度ポリエチレンのようなポリエチレン、
エチレン−酢酸ビニル共重合体、エチレン−エチルアク
リレート共重合体、エチレン−プロピレン共重合体のよ
うなエチレンを過半に含むエチレン系共重合体をあげる
ことができ、これらは、単独使用および2種以上の併用
が可能である。In the present invention, polyolefins include polyethylenes such as low-density polyethylene and medium-density polyethylene;
Examples include ethylene copolymers containing ethylene in the majority, such as ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and ethylene-propylene copolymer, which can be used alone or in combination of two or more. Can be used together.
上記ポリオレフィンに添加される酸化防止剤として、ジ
ートリデシル−チオ−ジ−プロピオネートを使用するこ
とにより、耐ボウタイトリー性及び耐熱老化性の双方が
著しく改善されることが見出された。It has been found that by using ditridecyl-thio-di-propionate as an antioxidant added to the polyolefin, both the bow tie resistance and the heat aging resistance are significantly improved.
かかる酸化防止剤は、ポリオ9742100重量部に対
して0.05〜3重量部の範囲で添加する必要があり、
0.05重量部未満では耐熱老化性の付与が不十分であ
り、3重量部を越えるとブルームにより耐ボウタイトリ
ー性が低下する。Such an antioxidant needs to be added in a range of 0.05 to 3 parts by weight per 100 parts by weight of Polio 9742,
If it is less than 0.05 parts by weight, imparting heat aging resistance will be insufficient, and if it exceeds 3 parts by weight, the bow tie resistance will decrease due to bloom.
本発明においては、上記酸化防止剤とフェノール系の酸
化防止剤の1種又は2種以上を組み合わせて使用するこ
とが可能である。フェノール系の酸化防止剤としては、
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
]、2.2−チオ−ジエチレンビス[3−(3,5−ジ
−t−ブチル−4−ヒドキシフェニル)プロピオネ−ト
コ、オクタデシル−3−(3,5−ジ−t−ブチル−4
−ヒドロキシフェニル)プロピオネートなどがあげられ
る。In the present invention, it is possible to use one type or a combination of two or more of the above antioxidants and phenolic antioxidants. As a phenolic antioxidant,
Pentaerythrityl-tetrakis [3-(3,5-di-
t-butyl-4-hydroxyphenyl)propionate], 2,2-thio-diethylenebis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3 ,5-di-t-butyl-4
-hydroxyphenyl) propionate and the like.
架橋は、ジクミルパーオキサイド、1.3−ビス−(t
−ブチル・パーオキシ−イソプロピル)ベンゼン、2.
5−ジメチル−2,5−ジ(t−ブチルパーオキシ)ヘ
キシン−3に代表されるパーオキサイドを用いて加熱架
橋するのが一般的である。その他、ビニルトリエトキシ
シランのような有機シランをポリマにグラフト後、シラ
ノール縮合触媒の存在下で水分と接触させて架橋させる
シラン水架橋、あるいは電子線のような電離性放射線の
照射による架橋でもよい。The crosslinking was performed using dicumyl peroxide, 1,3-bis-(t
-butyl peroxy-isopropyl)benzene, 2.
It is common to carry out thermal crosslinking using a peroxide typified by 5-dimethyl-2,5-di(t-butylperoxy)hexyne-3. Other methods include silane water crosslinking, in which an organic silane such as vinyltriethoxysilane is grafted onto a polymer and then brought into contact with water in the presence of a silanol condensation catalyst, or crosslinking by irradiation with ionizing radiation such as electron beams. .
ポリオレフィン、上記の酸化防止剤及び架橋剤を含有す
る樹脂組成物は、導体外周に直接あるいは半導電層を介
して被覆後架橋され電気絶縁層が形成される。本発明に
おいては、上記成分以外に必要に応じ滑剤、着色剤、充
填剤、架橋促進剤などを添加してもよい。A resin composition containing a polyolefin, the above-mentioned antioxidant, and a crosslinking agent is coated on the outer periphery of a conductor directly or via a semiconductive layer, and then crosslinked to form an electrically insulating layer. In the present invention, in addition to the above-mentioned components, a lubricant, a coloring agent, a filler, a crosslinking accelerator, etc. may be added as necessary.
[発明の実施例]
第1表の各側に示す成分を120℃の熱ロールで混練し
てシート化し、次いでペレット化した。このペレットを
押出機に導入して、外径3mmの銅導体上に厚さ0.5
mmのポリエチレン系半導電性層と共に厚さ2mmにな
るように押出被覆し、引続き窒素ガスを熱媒体とした乾
式架橋管内で架橋して絶縁電線を製造した。[Examples of the Invention] The components shown on each side of Table 1 were kneaded using hot rolls at 120°C to form a sheet, and then pelletized. This pellet was introduced into an extruder and placed on a copper conductor with an outer diameter of 3 mm to a thickness of 0.5 mm.
The wire was extruded and coated with a polyethylene semiconductive layer of 2 mm thick to a thickness of 2 mm, and then crosslinked in a dry crosslinking tube using nitrogen gas as a heating medium to produce an insulated wire.
製造した絶縁電線の耐ボウタイトリー性、耐熱老化性お
よびブルームについて評価し、その結果を第1表の下欄
に示した。なお、評価は次に基づいて行なった。The produced insulated wires were evaluated for bow tie resistance, heat aging resistance, and bloom, and the results are shown in the lower column of Table 1. In addition, the evaluation was performed based on the following.
耐ボウタイトリー性:絶縁電線を90°Cの水中に浸漬
し、導体と水との間に3kV、50Hzの交流電圧を印
加して500日間課電を行った。課電終了後、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、光学顕
微鏡を用いてボウタイトリーの発生個数(0,2mm以
上)を調べた。Bow tie resistance: An insulated wire was immersed in water at 90°C, and an AC voltage of 3 kV and 50 Hz was applied between the conductor and water for 500 days. After the electrification was completed, the sample was sliced, boiled and stained with a methylene blue aqueous solution, and the number of bowthorn trees (0.2 mm or more) generated was examined using an optical microscope.
耐熱老化性:絶縁電線から導体を抜いたチューブ状の絶
縁体をダンベル3号の形状に打ち抜き、150℃の老化
試験機中で加熱した。試料に褐色の斑点が発生するまで
の日数(老化限度)を測定した。Heat aging resistance: A tube-shaped insulator obtained by removing the conductor from an insulated wire was punched into the shape of a No. 3 dumbbell, and heated in an aging tester at 150°C. The number of days until brown spots appear on the sample (aging limit) was measured.
ブルーム:電線製造前のペレットを80℃の恒温槽に1
0日間保持した後の表面を観察して評価した。Bloom: Pellets before wire production are placed in a constant temperature bath at 80℃.
After holding for 0 days, the surface was observed and evaluated.
第1表から明らかな通り、本発明の範囲にある実施例1
〜5では耐ボウタイトリー性及び耐熱老化性に優れ、ブ
ルームの発生がない。比較例1は酸化防止剤を使用しな
い場合、比較例2は酸化防止剤の含有量が本発明の規定
値を下回る場合であり、いずれも耐熱老化性に劣る。比
較例3は酸化防止剤の含有量が本発明の規定値を上回る
場合、比較例4は従来の酸化防止剤を使用した場合であ
り、いずれもブルームが発生し、ボウタイトリーの発生
も著しい。As is clear from Table 1, Example 1 within the scope of the present invention
-5 has excellent bow tie resistance and heat aging resistance, and no blooming occurs. Comparative Example 1 is a case in which no antioxidant is used, and Comparative Example 2 is a case in which the content of antioxidant is less than the prescribed value of the present invention, and both have poor heat aging resistance. Comparative Example 3 is a case where the content of the antioxidant exceeds the specified value of the present invention, and Comparative Example 4 is a case where a conventional antioxidant is used, and in both cases, blooming occurs and the occurrence of bow tree is also significant.
[発明の効果]
以上の説明から明らかな通り、本発明によれば耐ボウタ
イトリー性及び耐熱老化性に優れた電線・ケーブルを実
現できるようになる。[Effects of the Invention] As is clear from the above description, according to the present invention, it is possible to realize electric wires and cables with excellent bow tie resistance and heat aging resistance.
Claims (1)
としてジートリデシル−チオ−ジ−プロピオネートを0
.05〜3重量部含有する樹脂組成物からなる被覆層が
導体外周に形成され、該被覆層は架橋されていることを
特徴とする電線・ケーブル。(1) Add 0 ditridecyl-thio-di-propionate as an antioxidant to 100 parts by weight of polyolefin.
.. An electric wire/cable, characterized in that a coating layer made of a resin composition containing 0.5 to 3 parts by weight is formed on the outer periphery of a conductor, and the coating layer is crosslinked.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30429687A JPH01144510A (en) | 1987-11-30 | 1987-11-30 | Electric wire/cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30429687A JPH01144510A (en) | 1987-11-30 | 1987-11-30 | Electric wire/cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01144510A true JPH01144510A (en) | 1989-06-06 |
Family
ID=17931325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30429687A Pending JPH01144510A (en) | 1987-11-30 | 1987-11-30 | Electric wire/cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01144510A (en) |
-
1987
- 1987-11-30 JP JP30429687A patent/JPH01144510A/en active Pending
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