EXPERIMENTAL AND NUMERICAL STUDY ON THERMAL INSULATIONPERFORMANCE OF LIGHT EPOXY COMPOSITES

Abstract

Abstract: The thermal insulation performance of hollow glass bead/epoxy composites were studied by experiment and numerical simulation method. The representative volume element was established by ANSYS/APDL parametric finite elements analysis technology, and then the effects of model size, volume fraction, particle size and ratio of thermal conductivity of matrix and particle (λ_m/λ_p, λ_m remain a constant) on the thermal conductivity of composites were investigated. The numerical results show that model size has little influence on the thermal conductivity of composites when it is larger than 500 μm. The thermal conductivity of composites decreases with the increase of volume fraction of particle and λ_m/λ_p. What is more, the thermal conductivity of composites is barely affected by the particle average size. By comparison, the calculated values are in good agreement with theoretical and measured values, which proves the reliability of the calculation method. In addition, the incorporation of hollow glass bead effectively reduces the density of the resin. Lightweight insulated hollow glass bead/epoxy composites have the potential to become an energy-saving and environmentally friendly material with a wide range of applications.

Key words: hollow glass bead, EP, RVE, thermal conductivity

CLC Number:

TB332

YANG Xiao-xiang, ZHU Qing-shuai, BAO Rui, YAN Shi-lin. EXPERIMENTAL AND NUMERICAL STUDY ON THERMAL INSULATIONPERFORMANCE OF LIGHT EPOXY COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(11): 37-42.

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