基于聚合物改性沥青的荧光显微镜样品制备方法研究

Study on the Preparation Method of Fluorescence Microscope Samples Based on Polymer-Modified Asphalt

摘要: 本研究针对聚合物改性沥青的荧光显微镜样品制备方法进行了系统研究。通过分析不同制备方法对改性沥青显微形态结构观测的影响，比较了热滴沥青载玻片成型法和冷冻沥青成型折取断面法。研究发现，加盖玻片的方法能够提高成像清晰度，但加热载玻片底部会改变沥青相态。基于实验结果，推荐采用载–盖法样本制作方法，该方法操作简单、成像清晰，且具有良好的观测重复性。最终确定的样本制作流程包括：将加热的改性沥青浇注于载玻片上，自由下落方式覆盖盖玻片，室温冷却后进行观测。本研究为改性沥青的微观结构分析提供了标准化的样品制备方法。

Abstract: This study systematically investigates the preparation methods for fluorescence microscope samples of polymer-modified asphalt. By analyzing the impact of different preparation methods on the microscopic morphological structure observation of modified asphalt, this research compares hot-drop asphalt slide formation and frozen asphalt formation fracture methods. It is found that the method of covering with a cover slip can improve image clarity, but heating the slide bottom can alter the phase state of asphalt. Based on experimental results, a cover-slip method for sample preparation is recommended, which is simple to operate, clear in imaging, and has good repeatability in observation. The finalized sample preparation process includes pouring heated modified asphalt onto a slide, covering it with a cover slip by free fall, and observing after cooling at room temperature. This study provides a standardized sample preparation method for the microscopic structure analysis of modified asphalt.