一种高介电常数聚丙烯组合物及其制备方法和应用
By preparing dielectric reinforcing agents and reactive extrusion of macromolecular dielectric reinforcing agents with polypropylene resin, the problems of dielectric loss and breakdown strength decrease caused by the increase of dielectric constant were solved, and a polypropylene composition with high dielectric constant and low dielectric loss was realized, which is suitable for film capacitors and lithium battery separators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2022-08-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies often lead to increased dielectric loss and decreased breakdown strength in the process of improving the dielectric constant of polypropylene. At the same time, uneven dispersion of inorganic materials makes film processing difficult.
Dielectric enhancers were prepared by reacting aliphatic diisocyanates with polyols and alkoxysilanes, and macromolecular dielectric enhancers were prepared by combining nickel-based complexing catalysts and alkylaluminoxane co-catalysts. High dielectric constant polypropylene compositions were prepared by reactive extrusion with polypropylene resin.
While maintaining the excellent properties of polypropylene, it significantly improves the dielectric constant and reduces dielectric loss, making it suitable for thin film capacitors and lithium battery separators.
Smart Images
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