Cables with cross-linked layers
A cross-linked layer and cable technology, applied in the direction of power cables, cable/conductor manufacturing, cables, etc., can solve the problems of damage, increase the risk of cross-linked layer decomposition, and the risk of methane explosion flammability cannot be ignored
Inactive Publication Date: 2019-01-11
NEXANS
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Problems solved by technology
thus significantly increasing the risk of disintegration of the cross-linked layer
In addition, the risk of methane explosion and its flammability cannot be ignored if the methane formed during the crosslinking stage is not vented from the crosslinked layer
Once this cable is in use, the gas can also cause damage
Method used
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[0119] 1. Filler-free electrical insulating composition
[0120] The amount of each compound in the filler-free photocrosslinking composition is expressed in parts by weight relative to 100 parts by weight of the polymer material (A), and the data are organized in Table 1 below.
[0121] The polymeric materials in Table 1 consist of polyethylene alone (LDPE) or a mixture of polyethylene (LDPE or HDPE) and a functionalized polymer (E-MA-GMA).
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Abstract
The invention relates to a cable (1) comprising an elongated conducting element (2) surrounded by at least one crosslinked layer (3, 4, 5) obtained from a A photocrosslinking composition of: - at least one polymeric material (A), - at least one photoinitiator (B), and - at least one crosslinking agent (C), characterized in that said crosslinking agent (C) contains at least one imide functional group.
Description
technical field [0001] The invention relates to cables having at least one crosslinked layer. [0002] The cables are usually (not specifically) used in low voltage (especially below 6kV), medium voltage (especially 6 to 45-60kV) or high voltage (especially higher than 60kV, and can be up to 800kV) power cables and other fields, no matter It is a DC power cable or an AC power cable. Background technique [0003] Power cables generally comprise a central electrical conductor and at least one electrically insulating layer, which is crosslinked by techniques known to those skilled in the art, in particular by the peroxidative route. [0004] Since the decomposition products of peroxidation represent some defects during the cable manufacturing process (in fact from the beginning when the cable is in operation), people are tending to avoid the peroxidative route more and more. This is because, during the crosslinking process, peroxides decompose and form crosslinking by-product...
Claims
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IPC IPC(8): H01B3/44C08K5/00C08K5/3415
CPCC08K5/0025C08K5/3415H01B3/441C08L23/00C08K5/16H01B9/00H01B13/00
Inventor 洛朗·克龙内斯米卡埃尔·阿贝吉莱洛朗·珀蒂泰
Owner NEXANS
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