Interface-engineered polypropylene blends for high voltage power cable insulations
발표자
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초록
내용
Here, we introduce design of insulative polypropylene (PP) blends with engineered interfaces to improve electrical durabilities as well as mechanical properties. PP-based insulating materials were prepared via melt-blending with rubbery ethylene-1-octene copolymer (EOC), followed by mixing an ethylene-propylene random copolymer (rPP) as a surfactant for high-voltage power cable applications. Simple melt-blending of rPP formed a core-shell nanostructure composed of EOC/rPP and a fine dispersion of macron-sized EOC domains. The nanostructured PP ternary blends exhibited multiple advantages in terms of thermal stability, mechanical properties, dielectric performances, and long-term stability compared to the existing crosslinked polyethylene (XLPE). This study provides a straightforward, rational design of environmental insulation materials for high voltage power cable applications.