High-voltage direct-current cable insulating material as well as preparation method and application thereof

By combining cross-linked polyethylene, polypropylene, graphene oxide, compatibility agent and silane coupling agent modified nanosilicon dioxide to prepare high-voltage DC cable insulating material, the problem of insufficient performance of existing materials is solved and the breakdown field strength and heat resistance are significantly improved.

CN119529422AInactive Publication Date: 2025-02-28ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
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Patent Information

Application Number
CN202411762995.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-02-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of cable materials, and particularly relates to a high-voltage direct-current cable insulating material and a preparation method and application thereof. According to the high-voltage direct-current cable insulating material provided by the invention, the graphene oxide, the maleic anhydride grafted polypropylene and other compatilizers, the silane coupling agent modified nano silicon dioxide and the crosslinked polyethylene are introduced into the insulating material, so that heat and charges in the high-voltage direct-current cable insulating material can be quickly dispersed and transferred; according to the high-voltage direct-current cable insulating material, the phenomena of local overheating and charge aggregation are reduced, the performance of the high-voltage direct-current cable insulating material is enhanced, and the direct-current breakdown field strength can be improved, so that the technical problems that the performance of the existing cable insulating material is relatively low and the requirements of the high-voltage direct-current cable insulating material cannot be met in the prior art are solved.
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Citation Information

Patent Citations

  • Polypropylene based blended nanocomposite and preparation method thereof

    CN107903494A

  • Polypropylene cable protection layer and preparation method thereof

    CN113921188A

  • Polypropylene-based insulation material, preparation method thereof and high-voltage direct-current polypropylene insulation cable

    CN118978764A

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