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Thermal Storage Properties of Polyurethane Solid-solid Phase-change Material with Low Phase-change Temperature and Its Effects on Performance of Asphalt Binders by Xiaoqing Wang; Biao Ma; Kun Wei; Wei Si; Xingxiang Kang; Yunfeng Fang; Hongfei Zhang; Jiaxuan Shi; Xueyan Zhou is a Engineering article available to read on EtoBox.
What is Thermal Storage Properties of Polyurethane Solid-solid Phase-change Material with Low Phase-change Temperature and Its Effects on Performance of Asphalt Binders about?
Preparing phase change materials (PCMs) with appropriate phase-change temperatures is of great significance in preventing the low-temperature disease in pavements. In this study, several polyurethane solid-solid PCM (PUPCM) samples were prepared via a two-step condensation reaction of polyethylene glycol, polytetramethylene ether glycol, 4,4′-diphenyl methane diisocyanate, and 4,4′-methylenebis-(2-chloroaniline). Considering the phase-change temperature and thermal stability, a PUPCM sample with a suitable molar ratio was used for the asphalt modification. The prepared materials were characterised by Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, three indices of asphalt and viscosity tests, rotational viscometer tests, and other techniques. PUPCM samples with different soft and hard segment ratios exhibit different phase-change temperatures and enthalpies, and their physical, chemical, and phase-change properties are stable. When the ratio of soft and hard segments is 8:2 (PU-14), the freezing and melting temperatures were −2.7 °C and 12.9 °C, and the enthalpy was 46.8 J/g. The PUPCM modification of asphalt only involves phy
Who reads Thermal Storage Properties of Polyurethane Solid-solid Phase-change Material with Low Phase-change Temperature and Its Effects on Performance of Asphalt Binders?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Xiaoqing Wang; Biao Ma; Kun Wei; Wei Si; Xingxiang Kang; Yunfeng Fang; Hongfei Zhang; Jiaxuan Shi; Xueyan Zhou
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)