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To optimize the process parameters for the preparation of regenerated products by mixing the powder of waste wind turbine blades with high-density polyethylene (HDPE) and remolding, the Six-sigma DoE method was used to design the experiments to study the effects of various process parameters such as barrel temperature in each zone, confluence core temperature, mold temperature, and main engine speed on the performance of regenerated products. The flexural strength and compressive strength were used as the evaluation indexes of the performance of regenerated products, and the optimum remolding process preparation parameters were obtained combined with the given matching value. The experimental results show that when the flexural strength of 44 MPa and the compressive strength of 31 MPa are selected as target matching values, the optimal process parameters obtained by maximizing the preferred parameters are: front zone barrel temperature of 189 ℃, middle zone barrel temperature of 179 ℃, rear zone barrel temperature of 168 ℃, confluence core temperature of 158 ℃, mold temperature of 156 ℃, and main engine speed of 4.0 r/min. Under this process condition, the flexural strength of the regenerated product is 43.15 MPa, and the compressive strength is 30.73 MPa.
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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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