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To meet the urgent demand for high-performance insulating materials in next-generation electrical equipment, epoxy resin samples were prepared and oxidized with different concentrations of ozone gas. The chemical structure, trap characteristics, and DC breakdown strength of the samples before and after ozone oxidation treatment were then tested and characterized. The results show that after ozone oxidation, the content of C=O and C-OH groups on the surface of epoxy resins increases significantly. After being oxidized with ozone gas at a concentration of 120 mg/L at 80°C for 2 hours, the deep trap energy level of epoxy resin increases from 0.97 eV to 1.04 eV, and its DC breakdown strength improves from 311.94 kV/mm to 395.96 kV/mm.
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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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