JP3178265B2 - Radiation-resistant insulation composition for electric wires and cables - Google Patents
Radiation-resistant insulation composition for electric wires and cablesInfo
- Publication number
- JP3178265B2 JP3178265B2 JP22810394A JP22810394A JP3178265B2 JP 3178265 B2 JP3178265 B2 JP 3178265B2 JP 22810394 A JP22810394 A JP 22810394A JP 22810394 A JP22810394 A JP 22810394A JP 3178265 B2 JP3178265 B2 JP 3178265B2
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- cables
- electric wires
- insulation composition
- resistant insulation
- 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.)
- Expired - Fee Related
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は原子力関連施設等におい
て使用される耐放射線性電線・ケーブルの絶縁組成物に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulation composition for radiation-resistant wires and cables used in nuclear facilities and the like.
【０００２】[0002]
【従来の技術】原子力発電所等の原子力関連施設内に
は、通常一般のプラントに比べて非常に高レベルな放射
線場となる領域が存在し、この種の施設において使用さ
れる電線・ケーブルには10MGy 級の高度な耐放射線性が
要求される。その電線・ケーブルのシース材料にはベー
スポリマとしてクロロスルホン化ポリエチレンが使用さ
れ、このベースポリマに0.01〜10MGy レベルの耐放射線
性を付与するには相当な困難であるため、アンチラッド
（放射線防護材）をブレンドすることが試みられてい
る。アンチラッドには (a)放射線エネルギーを吸収、散
逸するエネルギートランスファ型芳香族油、 (b)ポリマ
中に発生したラジカルを捕捉、安定化するラジカルトラ
ップ型の酸化防止剤、(c) ポリマ中に発生したエネルギ
ーを無害な熱エネルギー等に変換する光安定剤がある。2. Description of the Related Art In nuclear facilities such as a nuclear power plant, there is an area where radiation levels are extremely high compared to ordinary plants, and electric wires and cables used in these types of facilities are not available. Requires high radiation resistance of 10MGy class. Chlorosulfonated polyethylene is used as the base polymer for the sheath material of the electric wires and cables, and it is quite difficult to provide the base polymer with radiation resistance of 0.01 to 10 MGy level. Has been attempted to blend. Anti-rad contains (a) an energy transfer type aromatic oil that absorbs and dissipates radiation energy, (b) a radical trap type antioxidant that traps and stabilizes the radicals generated in the polymer, and (c) There are light stabilizers that convert generated energy into harmless heat energy and the like.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前述の
シース材料では、アンチラッドが多量に含まれている系
においても、 10MGy級の放射線が照射された場合、電線
の可撓性の指標となる伸び特性の低下をもたらし、実用
性が損われる結果となっていた。However, in the above-mentioned sheath material, even when a system containing a large amount of anti-rad is exposed to 10 MGy-class radiation, the elongation which is an indicator of the flexibility of the electric wire is obtained. As a result, the characteristics are lowered, and the practicality is impaired.
【０００４】本発明の目的は、前記した従来技術の課題
を解消し、 10MGy級の放射線にも耐えうる耐放射線性電
線・ケーブル用絶縁組成物を提供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a radiation-resistant insulating composition for electric wires and cables that can withstand radiation of 10 MGy class.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に、本発明の耐放射線性電線・ケーブル用絶縁組成物
は、次式Means for Solving the Problems To achieve the above object, the radiation-resistant insulating composition for electric wires and cables of the present invention has the following formula:
【０００６】[0006]
【化１】 Embedded image
【０００７】（式中、Ｒはアルキル基を示す。ｎは１，
２，…である。）で示される構造のアルキル化クロロス
ルホン化ポリエチレン 100重量部に対し、芳香族量30WT
％以上の芳香族油を20〜80重量部添加してなるものであ
る。(Wherein, R represents an alkyl group; n is 1,
2, ... ) Aromatic amount of 30 WT per 100 parts by weight of alkylated chlorosulfonated polyethylene having the structure
% Or more of an aromatic oil in an amount of 20 to 80 parts by weight.
【０００８】[0008]
【作用】ベースポリマとしてのクロロスルホン化ポリエ
チレンに芳香族油を添加するだけでは電線の可撓性の指
標となる伸び特性が低下するが、ベースポリマとしてア
ルキル化クロロスルホン化ポリエチレンを用い、これに
芳香族油を添加することにより、 10MGy級の放射線が照
射された場合でも優れた機械的特性を有する。したがっ
て、この組成物を電線・ケーブルの絶縁体またはシース
として使用すると、 10MGy級の放射線にも耐えうる耐放
射線性電線・ケーブルが得られる。The addition of aromatic oil to the chlorosulfonated polyethylene as the base polymer reduces the elongation characteristics, which are indicative of the flexibility of the electric wire, but the alkylated chlorosulfonated polyethylene is used as the base polymer. By adding an aromatic oil, it has excellent mechanical properties even when irradiated with 10 MGy-grade radiation. Therefore, when this composition is used as an insulator or a sheath of a wire or cable, a radiation-resistant wire or cable that can withstand radiation of 10 MGy grade can be obtained.
【０００９】本発明に使用する芳香族油は、モレキュラ
ータイプ分析により測定した芳香族量が30重量％以上の
ものであり、これ未満のものでは耐放射線性が不十分で
ある。その上限は特に規定しないが70重量％程度が好ま
しい。この芳香族油の配合量は、アルキル化クロロスル
ホン化ポリエチレン 100重量部に対して20〜80重量部の
範囲とする必要があり、20重量部未満では耐放射線性が
不十分であり、80重量部を越えると機械特性の低下が起
きる。The aromatic oil used in the present invention has an aromatic content of 30% by weight or more as measured by molecular type analysis, and if it is less than 30%, the radiation resistance is insufficient. The upper limit is not particularly defined, but is preferably about 70% by weight. The blending amount of the aromatic oil must be in the range of 20 to 80 parts by weight with respect to 100 parts by weight of the alkylated chlorosulfonated polyethylene. Exceeding the part causes a decrease in mechanical properties.
【００１０】本発明においては、上記成分に加えて各種
充填剤、難燃剤、架橋剤、着色剤、安定剤、酸化防止剤
等を適宜添加してもよい。In the present invention, various fillers, flame retardants, cross-linking agents, coloring agents, stabilizers, antioxidants and the like may be appropriately added in addition to the above components.
【００１１】[0011]
【実施例】次に本発明の実施例を説明する。Next, embodiments of the present invention will be described.
【００１２】先ず、表１の各例（実施例１〜４及び比較
例１〜４）に示すような配合成分の各種組成物を６イン
チロールに投入して 100℃で40分ロール混練を行い、混
練後、これを厚さ 1mmのシートに形成した。続いて、こ
れを、 145℃×40分の条件でプレス成形して、各例に示
す各種の成形体を作製した。この際、架橋処理を施し、
架橋剤としてにＰｂＯを使用した。First, various compositions of the components shown in the respective examples (Examples 1 to 4 and Comparative Examples 1 to 4) shown in Table 1 were charged into a 6-inch roll and roll-kneaded at 100 ° C. for 40 minutes. After kneading, this was formed into a sheet having a thickness of 1 mm. Subsequently, this was press-molded under the conditions of 145 ° C. × 40 minutes to produce various molded articles shown in each example. At this time, cross-linking treatment is performed,
PbO was used as a crosslinking agent.
【００１３】次に、このようにして作製した成形体につ
いて各種特性試験を行った。各例における評価結果は表
１の下欄に示す。Next, various characteristics tests were carried out on the molded body thus produced. The evaluation results in each example are shown in the lower column of Table 1.
【００１４】なお、前記の特性のうち耐放射線性は60Ｃ
ｏγ線を 10KGy/hの線量率で空気等価線量 10MGyを照射
して測定したものであり、その他の特性はJIS K 6760に
基づき測定したものである。Among the above-mentioned characteristics, radiation resistance is 60 C
The measurement was performed by irradiating oγ-rays at a dose rate of 10KGy / h with an air equivalent dose of 10MGy, and other characteristics were measured based on JIS K 6760.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１からも明らかなように、本発明に係る
実施例１〜４ではいずれの特性も優れていることが分か
る。これに対し、ベースポリマとしてアルキル化クロロ
スルホン化ポリエチレンを用いていない比較例１は機械
特性（伸び）が低下していると共に、耐放射線性が低
い。比較例２は芳香族油の転化量が本発明の規定値を上
回る場合であり、機械的特性の低下が大きい。比較例３
は芳香族油の添加量が本発明の規定値を下回る場合、比
較例４は芳香族含有量が本発明の規定値を下回る芳香族
を使用した場合であり、いずれも耐放射線性が低い。As is clear from Table 1, all of the characteristics are excellent in Examples 1 to 4 according to the present invention. On the other hand, Comparative Example 1, in which the alkylated chlorosulfonated polyethylene was not used as the base polymer, had low mechanical properties (elongation) and low radiation resistance. Comparative Example 2 is a case where the conversion amount of the aromatic oil exceeds the specified value of the present invention, and the mechanical properties are greatly reduced. Comparative Example 3
Is the case where the addition amount of the aromatic oil is lower than the specified value of the present invention, and Comparative Example 4 is the case where the aromatic content is lower than the specified value of the present invention, and all have low radiation resistance.
【００１７】上記のように、アルキル化クロロスルホン
化ポリエチレンに特定の芳香族油を添加することによ
り、10MGy 級の放射線が照射された場合でも優れた機械
的特性を有していることが分り、0.01〜10MGy の高放射
線にも耐えうる耐放射線性及び良好な機械特性を有する
絶縁組成物が得られ、特に耐放射線性電線・ケーブル用
として有用である。As described above, by adding a specific aromatic oil to the alkylated chlorosulfonated polyethylene, it is found that the polyethylene has excellent mechanical properties even when irradiated with 10 MGy-class radiation. An insulating composition having radiation resistance and good mechanical properties that can withstand high radiation of 0.01 to 10 MGy is obtained, and is particularly useful for radiation-resistant electric wires and cables.
【００１８】[0018]
【発明の効果】以上説明したように本発明によれば、0.
01〜10MGy の高放射線にも耐えうる耐放射線性及び良好
な機械特性を有する耐放射線性電線・ケーブル用絶縁組
成物が得られる。As described above, according to the present invention, the present invention has been described.
A radiation-resistant insulating composition for electric wires and cables having radiation resistance and good mechanical properties that can withstand high radiation of 01 to 10 MGy can be obtained.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 柳生 秀樹 茨城県日立市日高町５丁目１番１号 日 立電線株式会社パワーシステム研究所内 (56)参考文献 特開 平２−227914（ＪＰ，Ａ) 特開 平４−91147（ＪＰ，Ａ) 特開 平５−93115（ＪＰ，Ａ) 特開 平１−234452（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01B 7/28 H01B 3/44 C08K 5/01 C08L 23/34 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideki Yagyu 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture Power System Research Laboratories Hitachi, Ltd. (56) References JP-A-2-227914 (JP, A) JP-A-4-91147 (JP, A) JP-A-5-93115 (JP, A) JP-A-1-234452 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) ) H01B 7/28 H01B 3/44 C08K 5/01 C08L 23/34
Claims (1)
る。）で示される構造のアルキル化クロロスルホン化ポ
リエチレン 100重量部に対し、芳香族量30WT％以上の芳
香族油を20〜80重量部添加してなることを特徴とする耐
放射線性電線・ケーブル用絶縁組成物。1. The following formula: (Wherein, R represents an alkyl group; n is 1, 2,...). An insulation composition for radiation-resistant electric wires and cables, characterized by being added in an amount of 20 to 80 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22810394A JP3178265B2 (en) | 1994-09-22 | 1994-09-22 | Radiation-resistant insulation composition for electric wires and cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22810394A JP3178265B2 (en) | 1994-09-22 | 1994-09-22 | Radiation-resistant insulation composition for electric wires and cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0896629A JPH0896629A (en) | 1996-04-12 |
| JP3178265B2 true JP3178265B2 (en) | 2001-06-18 |
Family
ID=16871248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22810394A Expired - Fee Related JP3178265B2 (en) | 1994-09-22 | 1994-09-22 | Radiation-resistant insulation composition for electric wires and cables |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3178265B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014091025A (en) * | 2012-10-31 | 2014-05-19 | Jet's Co Ltd | Ball for accessory, and accessory using the ball |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5403258B2 (en) * | 2008-12-22 | 2014-01-29 | 日立金属株式会社 | Radiation-resistant composition and electric wire / cable |
-
1994
- 1994-09-22 JP JP22810394A patent/JP3178265B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014091025A (en) * | 2012-10-31 | 2014-05-19 | Jet's Co Ltd | Ball for accessory, and accessory using the ball |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0896629A (en) | 1996-04-12 |
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