Open AccessMicroscopic experimental analysis on weatherability of roof insulation materials under multi field coupling environment
Author(s) -
Yang Ding,
Jicheng Dong,
Tonglin Yang,
Zhongping Wang,
Shan Zhou,
Yongqi Wei,
Anming She
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abeb8a
Subject(s) - materials science , thermal conductivity , composite material , vacuum insulated panel , thermal insulation , thermal bridge , polyurethane , dynamic insulation , conductivity , thermal , roof , structural engineering , layer (electronics) , thermodynamics , engineering , chemistry , physics
The weatherability of insulation materials directly affects its thermal insulation performance, so it is necessary to carry out the weatherability experiments for insulation materials. In this paper, three kinds of insulation materials, that is, polyurethane (PUR), foam concrete (FC) and vacuum insulation panel (VIP) are chosen to analyze their thermal conductivity under different kinds of weatherability experiments. For the different kinds of weatherability experiments, the experiments of damp-heat, freeze-thaw, high-low temperature and wet-dry are designed to analyze the thermal conductivity of the insulation materials and the microstructure of insulation materials. The experimental results show that thermal conductivity of FC has a downward trend under the damp-heat experiment, and the thermal conductivity of FC has increased in other experiments. The thermal conductivity of PUR increases in all weatherability experiments, but the thermal conductivity of VIP does not change in all weatherability experiments.