This study aims to prepare high-performance polypropylene (PP) insulation materials and investigate the enhancement mechanism of their properties. By combining in-reactor alloying and blending modification technologies, PP insulation materials with elastomer mass fractions of 20% to 30% for high-voltage cables were prepared. The interfacial compatibility between the elastomer and PP matrix and its impact on the performance of the PP insulation material were studied. The results show that the propylene-based elastomer can effectively improve the interfacial compatibility between elastomers and PP matrix, thereby reducing interfacial defects. The "bimodal" particle size distribution design of elastomers successfully balances the dual effects of the elastomer on mechanical toughness and electrical strength of PP insulaton materials, realizing the synergistic improvement in mechanical toughness, electric strength, and thermal stability, demonstrating excellent overall performance. Moreover, the prepared PP cable material possesses good processing adaptability.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |