The preparation process and the final properties of new thermoplastic lead‐free medium voltage (MV) insulation compounds based on the thermoplastic vulcanized (TPV) technology are reported and discussed at molecular level. The TPV MV insulation compounds were prepared starting from a peroxide curable lead free MV insulation, which is the actual market benchmark. For this reason, they were extensively investigated in comparison to the standard lead free MV insulation. The results of the dynamic vulcanization process were evaluated and related to the formulation. Now in the present paper we are reporting a detailed analysis of the molecular changes induced by the vulcanization reaction with reference to the different polymers and low molecular weight additives present in the starting mixture. The results are analyzed with reference to the used polyolefins structure with the aim to provide insights helping to relate the formulation at molecular level to the behavior of the final complex materials thus offering an useful tool to a priori design of TPVs with the desired ultimate properties.

中文翻译：

---

无铅热塑性硫化聚烯烃混合物动态硫化过程中的分子演化

在分子水平上报道并讨论了基于热塑性硫化（TPV）技术的新型热塑性无铅中压（MV）绝缘化合物的制备过程和最终性能。TPV MV绝缘胶料是从过氧化物可固化的无铅MV绝缘胶开始制备的，这是实际的市场基准。因此，与标准无铅中压绝缘相比，对它们进行了广泛的研究。对动态硫化过程的结果进行了评估并与配方有关。现在，在本文中，我们报告了对硫化反应引起的分子变化的详细分析，其中涉及到起始混合物中存在的不同聚合物和低分子量添加剂。