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In order to investigate the ageing characteristics of the FRP/RPUF interface of composite insulation cross-arm under the effect of water intrusion, FRP/RPUF interface specimens were prepared, and water intrusion and destruction process in the FRP/RPUF interface was accelerated by hygrothermal ageing method. According to the test results of water absorption, shear strength, and leakage current, the ageing characteristics of the FRP/RPUF interface under water intrusion were obtained by combining with SEM, FTIR, and TGA. The results show that water intrusion can cause moisture plasticisation of the interface, reduce the shear strength and increase the leakage current, while that destructive effects decrease with the dissipation of water; hydrolytic reaction of FRP/RPUF interface material undergoes under the effect of water, leading to the generation of local defects and the increase of impurity ions, which further destroys the mechanical and electrical properties of the interface.
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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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