Can I read Development of Composite-phase Change Microcapsule Coating and Numerical Investigation on Its Effect in Ballastless Track Slabs on EtoBox?

Development of Composite-phase Change Microcapsule Coating and Numerical Investigation on Its Effect in Ballastless Track Slabs by Rui Su; Yue Lv; Qian Su; Yanfei Pei is a Engineering article available to read on EtoBox.

What is Development of Composite-phase Change Microcapsule Coating and Numerical Investigation on Its Effect in Ballastless Track Slabs about?

To solve the problems of interlayer cracking, up-arching and warping of ballastless track slab of high-speed railway under temperature load, a composite phase-change microcapsule (MPCM) was developed, and a series of physical and chemical experiments was conducted. The practicality and functional advantages of composite phase-change microcapsules were investigated by SEM, FTIR, DSC and other material tests. The cooling effects of the coating were evaluated and simulated by indoor tests and numerical simulations. The results show that the developed MPCM exhibits both strong reflectivity of TiO2 and the phase change energy storage property of paraffin, which can reflect 59%-63% of the near-infrared radiation in solar radiation. Moreover, 1 g MPCM can absorb and store 98.3–112.5 J of heat when the ambient temperature exceeds 40 °C. The MPCM coating can reduce the rate of temperature rise of the test specimen, and also decrease its overall temperature difference to 12–15 °C. Furthermore, it can reduce the longitudinal temperature gradient of the test specimen at least by 50%, and its surface temperature by 18%-28%. The temperature regulation ability of coating is positively correlated

Who reads Development of Composite-phase Change Microcapsule Coating and Numerical Investigation on Its Effect in Ballastless Track Slabs?

Author

Rui Su; Yue Lv; Qian Su; Yanfei Pei

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)