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The surface of basalt fibers was modified by nano alumina, and then modified basalt fiber/epoxy resin composite (BFRP) was prepared by lamination method, and the effect of nano-Al2O3 content on the insulation and mechanical properties of the modified composite was experimentally analyzed. The results show that when the mass fraction of nano-Al2O3 is 1.0%, the interface modification effect of BFRP is the best. Compared with untreated composites, the dielectric loss factor of 1.0K-BFRP reduces by 38.13%, the surface flashover voltage increases by 42.96%, and the breakdown voltage increases by 33.96%, demonstrating more superior insulation performance; the tensile strength, flexural strength, and interlaminar shear strength increases by 26.46%, 48.19%, and 66.06%, respectively, and the glass transition temperature increases by 4.49℃.
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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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