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Electrical cables containing insulations which are highly resistant to formation and growth of water-trees
Electrical cables containing insulations which are highly resistant to formation and growth of water-trees
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机译:包含绝缘层的电缆,该电缆对水树的形成和生长具有很高的抵抗力
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摘要
Carboxylic acids of the general formula I IMAGE where the indices and the variables have the following meanings: R1, R2 and R3: independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.
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