JPH0126124B2 - - Google Patents
Info
- Publication number
- JPH0126124B2 JPH0126124B2 JP13347883A JP13347883A JPH0126124B2 JP H0126124 B2 JPH0126124 B2 JP H0126124B2 JP 13347883 A JP13347883 A JP 13347883A JP 13347883 A JP13347883 A JP 13347883A JP H0126124 B2 JPH0126124 B2 JP H0126124B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrated alumina
- magnesium silicate
- present
- equal
- weight
- 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
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 6
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 6
- 235000019792 magnesium silicate Nutrition 0.000 claims description 6
- 239000000391 magnesium silicate Substances 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229920003051 synthetic elastomer Polymers 0.000 claims description 3
- 239000005061 synthetic rubber Substances 0.000 claims description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Description
〔発明の背景と目的〕
本発明は、絶縁ゴム組成物の改良に関するもの
である。
一般に、炭素と水素とから合成された合成ゴム
のゴム組成物は、ケーブルなどの絶縁材として広
く使用されている。しかし、高電圧使用中に、塩
類、粉塵及びイオン性汚損物を含んだ水分などが
絶縁体表面に付着すると漏れ電流が生じる。
そして、漏れ電流による発熱のため絶縁体表面
が温度上昇してついには有機物質は炭化してしま
う。この炭化はトラツク状に生じることからトラ
ツキング現象として知られており、炭化が増加す
るとついには絶縁性が損われ使用が制限される。
この耐トラツキング性を向上させる方法として
は、水和アルミナを充填することが最も効果的で
あることは当業界において広く知られている技術
である。水和アルミナは、通常30〜60重量％、多
い場合は80重量％充填される。しかし、水和アル
ミナを高充填すると機械的特性の低下、加工性な
どの問題を生じるため、高度な耐トラツキング性
と機械的特性を必要とする場合には限界があつ
た。そのため、表面処理による改良研究も行われ
ている。しかし、きわめて限られた特殊な高価な
表面処理剤を用いる必要があると共に、その効果
は必ずしも満足すべきものが得られないと云う欠
点があつた。
本発明は上記の状況に鑑みなされたものであ
り、経済性を備えると共に高度の耐トラツキング
性と機械的特性を有する絶縁ゴム組成物を提供す
ることを目的としたものである。
〔発明の概要〕
本発明の絶縁ゴム組成物は、炭素と水素から合
成された合成ゴムに、水和アルミナと珪酸マグネ
シウムとの一方が、２より大きいかまたは等しく
他方が８より小さいか等しく、かつ、上記水和ア
ルミナと上記珪酸マグネシウムとの和が10からな
る比率の該水和アルミナ及び該珪酸マグネシウム
を、組成物全重量の40〜72重量％の範囲で含ませ
てなるものである。
〔実施例〕
以下本発明を実施例を第１表により説明する。
BACKGROUND AND OBJECTS OF THE INVENTION The present invention relates to improvements in insulating rubber compositions. Generally, rubber compositions of synthetic rubber synthesized from carbon and hydrogen are widely used as insulating materials for cables and the like. However, if salts, dust, water containing ionic contaminants, etc. adhere to the surface of the insulator during high voltage use, leakage current will occur. Then, the temperature of the surface of the insulator rises due to the heat generated by the leakage current, and eventually the organic substance is carbonized. Since this carbonization occurs in the form of tracks, it is known as a tracking phenomenon, and as carbonization increases, the insulation properties are eventually impaired and its use is restricted. It is widely known in the art that filling hydrated alumina is the most effective method for improving this tracking resistance. Hydrated alumina is typically loaded at 30-60% by weight, and as high as 80% by weight. However, when highly filled with hydrated alumina, problems such as a decrease in mechanical properties and workability occur, so there is a limit in cases where high tracking resistance and mechanical properties are required. For this reason, research is also being conducted to improve the surface treatment. However, there are disadvantages in that it is necessary to use a very limited number of special and expensive surface treatment agents, and the effects are not necessarily satisfactory. The present invention was made in view of the above situation, and an object of the present invention is to provide an insulating rubber composition that is economical and has high tracking resistance and mechanical properties. [Summary of the Invention] The insulating rubber composition of the present invention includes a synthetic rubber synthesized from carbon and hydrogen, one of hydrated alumina and magnesium silicate, one of which is greater than or equal to 2, the other of which is less than or equal to 8, Further, the hydrated alumina and the magnesium silicate are contained in a ratio of 40 to 72% by weight based on the total weight of the composition, such that the sum of the hydrated alumina and the magnesium silicate is 10. [Examples] The present invention will be explained below with reference to Examples in Table 1.
以上記述した如く本発明の絶縁ゴム組成物は、
経済性を備えると共に高度の耐トラツキング性と
機械的特性を有する効果を有するものである。
As described above, the insulating rubber composition of the present invention has
It is economical and has the effect of having high tracking resistance and mechanical properties.
Claims (1)
和アルミナと珪酸マグネシウムとの一方が、２よ
り大きいかまたは等しく他方が８より小さいか等
しく、かつ、上記水和アルミナと上記珪酸マグネ
シウムとの和が10からなる比率の該水和アルミナ
及び該珪酸マグネシウムを、組成物全重量の40〜
72重量％の範囲で含ませてなることを特徴とする
絶縁ゴム組成物。1. In a synthetic rubber synthesized from carbon and hydrogen, one of hydrated alumina and magnesium silicate is greater than or equal to 2, and the other is less than or equal to 8, and the above hydrated alumina and the above magnesium silicate are The hydrated alumina and the magnesium silicate in a ratio of 10 to 40 of the total weight of the composition
An insulating rubber composition characterized by containing 72% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13347883A JPS6025103A (en) | 1983-07-21 | 1983-07-21 | Insulating rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13347883A JPS6025103A (en) | 1983-07-21 | 1983-07-21 | Insulating rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6025103A JPS6025103A (en) | 1985-02-07 |
| JPH0126124B2 true JPH0126124B2 (en) | 1989-05-22 |
Family
ID=15105712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13347883A Granted JPS6025103A (en) | 1983-07-21 | 1983-07-21 | Insulating rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025103A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185814A (en) * | 1985-02-14 | 1986-08-19 | 藤倉ゴム工業株式会社 | Flame resisting for cable protection |
-
1983
- 1983-07-21 JP JP13347883A patent/JPS6025103A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6025103A (en) | 1985-02-07 |
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