Performance and Modification Mechanism of Recycled Glass Fiber of Wind Turbine Blades and SBS Composite-Modified Asphalt

被引:8
|
作者
Nie, Yihua [1 ]
Liu, Qing [1 ]
Xiang, Zhiheng [1 ]
Zhong, Shixiong [1 ]
Huang, Xinyao [1 ]
机构
[1] Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan 411201, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 10期
关键词
composite-modified asphalt; recycled glass fiber; wind turbine blades; silane coupling agent; SBS-modified asphalt; REUSE ASSESSMENT; CONCRETE; STRENGTH; WASTES;
D O I
10.3390/app13106335
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Efficient disposal of composite materials recycled from wind turbine blades (WTB) at end-of-life needs to be solved urgently. To investigate the modification effects and mechanism on SBS-modified asphalt of the recycled glass fiber (GF) from WTB, GF-WTB/SBS composite-modified asphalt was prepared. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) were adopted to evaluate its performance. FTIR, SEM, EDS, and AFM methods were used to assess coupling agent pretreatment effects on GF-WTB and observe the modification mechanism. The macroscopic tests show that reasonable addition of GF-WTB effectively raises the high-temperature performance and low-temperature crack resistance evaluation index k-value of SBS-modified asphalt, and the optimal content is 2 wt% GF-WTB with 4 wt% SBS. FTIR, SEM, and EDS tests show GF-WTB can be successfully grafted by UP152 coupling agent and show that adhesion of the GF-WTB to the SBS-modified asphalt can be improved. AFM observation shows SBS and GF-WTB have good compatibility, improving the asphalt elasticity and toughness. This study provides a feasible solution for environmentally friendly regeneration of the composite materials from WTB and contributes to the development of the secondary modifier of SBS-modified asphalt.
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页数:18
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