Title:
METHOD FOR MANUFACTURING ORGANIC-INORGANIC COMPOSITE INSULATION COMPOSITION FOR HIGH-VOLTAGE DIRECT CURRENT CABLES AND ORGANIC-INORGANIC COMPOSITE INSULATION COMPOSITION FOR HIGH-VOLTAGE DIRECT CURRENT CABLES, MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2024/090637
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing an organic-inorganic composite insulation composition for high-voltage direct current cables and an organic-inorganic composite insulation composition manufactured thereby, wherein the method comprises the steps of: adding water and a catalyst to alkoxy silane in a solvent and synthesizing a dispersion of silica nanoparticles by a sol-gel reaction; reacting the silica nanoparticle dispersion with alkoxysilane having a surface-modifying functional group to prepare silica nanoparticle powder having a surface modified with the functional group; and melt mixing the surface-modified silica nanoparticle powder with a polyolefin-based thermoplastic elastomer resin to afford the organic-inorganic composite insulation composition, wherein the surface-modifying functional group is at least one selected from the group consisting of methyl, ethyl, vinyl, thiol, amine, and fluorine groups and the organic-inorganic composite insulation composition suppresses the accumulation of space charges by trapping the space charges generated upon application of high-voltage direct current. The method of manufacturing an organic-inorganic composite insulation composition for high-voltage direct current cables according to the present invention is designed to surface modify silica nanoparticle powder with alkoxysilane having a surface-modifying functional group and then mix same with a thermoplastic elastomer resin, thus providing an insulation composition for high-voltage direct current cables, which effectively suppresses the accumulation of space charges in the insulation composition. The resulting organic-inorganic composite insulating composition suppresses the degree and temporal increase rate of electric field distortion due to space charge accumulation in a high-voltage direct current environment, while exhibiting excellent insulating performance and mechanical properties.
Inventors:
LEE DAE HO (KR)
KIM DO GEON (KR)
KIM IN SUNG (KR)
HAN JIN A (KR)
YU SEOUNG GUN (KR)
HAN SE WON (KR)
KIM DO GEON (KR)
KIM IN SUNG (KR)
HAN JIN A (KR)
YU SEOUNG GUN (KR)
HAN SE WON (KR)
Application Number:
PCT/KR2022/016875
Publication Date:
May 02, 2024
Filing Date:
November 01, 2022
Export Citation:
Assignee:
KOREA ELECTROTECHNOLOGY RES INSTITUTE (KR)
International Classes:
C08L23/10; C08K3/36; C08K5/5415; C08K9/06; C08L23/08; H01B3/44; H01B7/02; H01B13/06
Attorney, Agent or Firm:
PUKYUNG INTERNATIONAL PATENT & LAW FIRM (KR)
Download PDF:
Previous Patent: GLASS BOTTLE COVER ASSEMBLY
Next Patent: SYSTEM FOR MONITORING ACCELERATED DEGRADATION OF HVDC POWER CABLE
Next Patent: SYSTEM FOR MONITORING ACCELERATED DEGRADATION OF HVDC POWER CABLE