Thermoplastic Environmentally Friendly Insulating Material: Self-assembled Insulating Film Supporting Water Repellent Effect

The deterioration of polylactic acid packaging materials due to moisture and insulation failure is a significant factor. Enhancing the long-term stability of polylactic acid in hot and humid environments is crucial for electronic components to adapt to complex working conditions and high power density. In this study, we prepared a hydroxy-terminated polydimethylsiloxane modified fluorinated graphene and utilized self-assembly to construct a micro-nano structure hydrophobic surface on the polylactic acid material. This approach effectively enhances the surface hydrophobicity and moisture resistance of polylactic acid. Moreover, the introduction of hydroxy-terminated polydimethylsiloxane modified fluorinated graphene filler enables the creation of an “arch bridge” energy band structure within polylactic acid, facilitating carrier migration regulation. By employing this method, we achieve a synergistic improvement in the moisture resistance and insulation performance of polylactic acid.