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Effect of Nano-zinc Oxide on the Morphology and Ultraviolet Aging Properties of Various Bitumens

机译:纳米氧化锌对各种沥青形态和紫外线老化性能的影响

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摘要

Effect of nano-zinc oxide (nano-ZnO) on the morphology and ultraviolet (UV) aging properties of two bitumens was investigated by atomic force microscopy, physical properties and Fourier transform infrared spectroscopy before and after UV aging. The results show that the mechanism of nano-ZnO depends on the base bitumen. In one case, nano-ZnO contributes to the homogeneous dispersion of bee-like structures. In the other case, it leads to the separation of asphaltenes from the matrix. Compared with B2, nano-ZnO exhibits a better improvement in UV aging resistance of B1 by showing the lower increased viscosity values, rheological aging index, and carbonyl indexes.
机译:通过原子力显微镜,物理性质和傅立叶变换红外光谱研究了纳米氧化锌(nano-ZnO)对两种沥青的形貌和紫外老化特性的影响。结果表明,纳米ZnO的机理取决于基础沥青。在一种情况下,纳米ZnO有助于蜜蜂状结构的均匀分散。在另一种情况下,这导致沥青质与基质分离。与B2相比,纳米ZnO通过显示较低的增加的粘度值,流变老化指数和羰基指数,在B1的抗紫外线老化方面表现出更好的改善。

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