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The aggregate structure, microcrystalline structure, and surface chemical properties of domestically developed conductive carbon black (CB) were compared with that of international commercial products, and the comprehensive performance of semi-conductive shielding materials prepared by filling CB were studied. The results show that the domestic CB exhibits comparable aggregate structures, microcrystalline dimensions, and carbon content with the imported CB, while the domestic CB contains 0.51% of sulfur elements and demonstrates lower particle size uniformity, alongside a significant variance in the content of various surface functional groups. The semi-conductive shielding material prepared with domestic CB achieves equivalent electrical and mechanical performance to that prepared with imported CB, but its surface smoothness is inferior, which does not meet the industry requirements. It is concluded that the uniformity of particle size, contents of surface functional groups, and the sulfur content are important research direction for structural optimization and performance improvement of domestic conductive carbon black, and surface smoothness is a significant research focus for the development of domestic high-voltage semi-conductive shielding materials.
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| 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 |
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