Cable comprising crosslinked layer obtained from polymer composition

A technology of polymer and cross-linked layer, applied in insulated cables, cable/conductor manufacturing, cables, etc., can solve problems such as cross-linked products that are not suitable for the production of halogen-free polymers, and improve aging stability and electrical stability. high degree of cross-linking, and the effect of improving aging stability

Pending Publication Date: 2019-11-19
NEXANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, since a quaternary ammonium (or phosphorus) salt containing a halogen atom is included as a crosslinking agent, it is not suitable for producing a crosslinked product of a halogen-free polymer

Method used

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  • Cable comprising crosslinked layer obtained from polymer composition
  • Cable comprising crosslinked layer obtained from polymer composition
  • Cable comprising crosslinked layer obtained from polymer composition

Examples

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Effect test

Embodiment

[0103] Hereinafter, the present invention is described in further detail in the following examples, which are not intended to limit the scope of the present invention in any way. In addition, it is apparent that various modifications to the disclosed embodiments may be made by those skilled in the art and such modifications are intended to be within the scope of the invention.

[0104] Preparation of the polymer composition according to the invention and its cross-linked product and determination of its cross-linking properties

preparation example

[0106] At 80°C, a carboxyl-containing ethylene-acrylate copolymer (C-AEM, Denka ERA804, containing about 2% by weight of carboxyl groups), triglycidyl isocyanurate (TGIC, I0428 , Tokyo Chemical Industry Co.), 1,4-diazabicyclo [2.2.2] octane (DABCO, D0134, Tokyo Chemical Industry Co.), dibutyltin dilaurate (DBTDL, Dabco T-12, OHSUNG polytec Co .), PCD-50 (Rhenogran PCD-50, RheinChemie) and CaCO 3 (Hydorcarb 95T, Omya International AG) was mixed for 10 minutes at the mixing ratio shown in Table 1 below to prepare a polymer composition according to the present invention. The crosslinking properties, such as minimum and maximum torque values ​​(S min and S max ) and the time required to reach 90% of the maximum torque value (t c90 ). Then, at the predetermined crosslinking temperature (180°C) and under a pressure of about 30 bar, at the t determined above c90 Inside, the polymer composition thus prepared was molded and crosslinked using a compression mold, thereby preparing a...

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Abstract

The present invention relates to a cable including at least one elongated conductor surrounded by at least one cross-linked layer, said layer being obtained from a polymer composition comprising a polymer, a crosslinking agent, and an amine as co-crosslinking agent, wherein said amine has a nucleophilic value (N) of 14 or more.

Description

technical field [0001] The invention relates to an electrical cable comprising at least one elongated conductor surrounded by at least one crosslinked layer obtained from a polymer composition. Background technique [0002] Peroxide-based crosslinkers are widely used commercially due to their ability to quickly and efficiently crosslink polymers. However, such peroxide-based cross-linking agents generate a large amount of low-molecular-weight by-products during the cross-linking reaction, and such by-products can be vaporized at high cross-linking temperatures to damage the appearance of the product, and such by-products can be It remains in the product after coupling, which greatly reduces the aging stability and electrical stability of the product. Therefore, there is a disadvantage that in order to crosslink a polymer composition containing a peroxide-based crosslinking agent, it is necessary to use a pressurizing device capable of preventing damage to the appearance due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L9/02C08L79/00C08K13/02C08K5/3462C08K5/57C08K3/26
CPCC08L23/0869C08L9/02C08L23/0853C08L23/0884C08L2203/202C08L2201/08C08K2003/265C08L79/00C08K13/02C08K5/3462C08K5/57C08K3/26H01B3/441H01B3/447H01B3/448C08K5/17C08K5/092C08K5/1515H01B13/22H01B3/40H01B3/425C08K5/0025C08L31/06C08L63/00H01B7/0054
Inventor 安大业裴晙辉林钟赞
Owner NEXANS
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