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To address the degradation of insulation and mechanical properties and the risk of lightning strikes caused by insulator icing, this study developed an environmental friendly and recyclable superhydrophobic material (DGEAC/SiO2-POTS). Silica was obtained through sol-gel hydrolysis, and SiO2 particles were modified with n-octyltriethoxysilane (POTS). This SiO2 particles were then mixed with multifunctional polyester (DGEAC), and micro/micro/nano three-layer hierarchical superhydrophobic coating was constructed on the surface of the insulator through phase separation technology. The results show that the coating exhibit exceptional superhydrophobicity with a contact angle of 162.2° and a rolling angle less than 5°; the coating maintains superhydrophobicity after 400 cycles of sandpaper abrasion, 100 cycles of tape peeling, and acid/base solution corrosion; the coating retains its hydrophobic effect after 15 cycles of high-low temperature alternating tests. Compared with bare insulators, the coating delays ice formation by 5.6 times at -20℃ and significantly reduces ice adhesion to 28.7 kPa. The innovative introduction of a dynamic covalent bond ester exchange mechanism enables the efficient recovery of SiO2-POTS particles with stable performance using ethylene glycol. The material has a volume resistivity greater than 2.8×1014 Ω·cm and a peak breakdown voltage reaches 22.94 kV. This multifunctional material integrates anti-icing, durability, recyclability, and electrical safety, which can offer a promising green solution for protecting transmission equipment.
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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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