The motivation of this study was to explore the viability of a new strategy, aimed at substantially improving both thermal and dielectric performance of polypropylene (PP), especially under oxidative conditions, by preparing in a single step a self-cross-linkable functionalized PP. For that purpose, an α-olefin bearing the N-alkylpyrrole moiety was copolymerized with propylene, by using metallocene catalysis, and the obtained materials thoroughly characterized. Thermal treatment at processing temperatures of the obtained copolymers proved that radical chemistry associated with this function provides, per se, efficient PP cross-linking. The copolymers show high dielectric reliability and retain a flexible behavior, thus breaking new ground in the single-step preparation of high thermal stability PP-based dielectrics.

中文翻译：

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探索开发高热稳定性聚丙烯基电介质的功能

这项研究的目的是探索一种新策略的可行性，该策略旨在通过一步制备自交联的官能化PP来显着提高聚丙烯（PP）的热性能和介电性能，尤其是在氧化条件下。为此目的，通过使用茂金属催化，将带有N-烷基吡咯部分的α-烯烃与丙烯共聚，并彻底表征获得的材料。所获得的共聚物在加工温度下的热处理证明，与此功能相关的自由基化学作用本身就可以提供，高效的PP交联。该共聚物显示出高的介电可靠性并保持柔韧性，因此在一步法制备高热稳定性PP基介电材料方面开辟了新的天地。