Abstract
In order to optimize the phase-change energy storage materials for asphalt pavement and analyze the feasibility and applicability of phase-change energy storage materials for asphalt pavement, the experimental methods of thermogravimetric analysis (TG) and Fourier infrared spectroscopy (FT-IR) were adopted. The thermal stability, chemical stability and chemical compatibility of various phase change energy storage materials were tested and analyzed. The results show that the fatty acids, stearic acids and fatty alcohols showed significant weight loss at 200°C. PEG and DTC phase change materials showed no mass loss at 200°C and had good thermal stability. PEG2000 and DTC have no chemical changes after high temperature treatment, and PEG2000, DTC and SBS modified asphalt are physical blend, and the chemical compatibility with asphalt is good. Crystalline hydrated salts, paraffin, fatty acid, stearic acid, fatty alcohol phase change materials are not suitable for asphalt pavement, PEG organic phase change materials and DTC composite phase change materials can be used for intelligent temperature control asphalt pavement research.
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