<abstract xmlns="http://www.w3.org/1999/xhtml">The influence of types and parameters of hollow microspheres in the composition of syntactic foams on their structure and coefficient of thermal conductivity has been studied. By using structural and thermal analysis it has been found that the volume concentration and the size of the ceramic and glass hollow microspheres have a strong impact on the density and thermophysical properties of the thin syntactic foams coatings. It has been shown that the best heat insulating properties belong to syntactic foam with composition of 60 vol. % ceramic microspheres with particle size of 1 - 40 μm (<italic>k</italic> = 0.029 W/m·K, <italic>R</italic> = 0.008 (m2·K)/W) and with composition of 80 vol. % glass hollow microspheres with particle size of 9 - 25 μm (<italic>k</italic> = 0.087 W/m·K, <italic>R</italic> = 0.008 (m2·K)/W). The results demonstrate that application of syntactic foams as thin insulating coatings is appropriate and they are an energy efficient material with number of benefits compare with the common thermal insulators.</abstract>

The influence of types and parameters of hollow microspheres in the composition of syntactic foams on their structure and coefficient of thermal conductivity has been studied. By using structural and thermal analysis it has been found that the volume concentration and the size of the ceramic and glass hollow microspheres have a strong impact on the density and thermophysical properties of the thin syntactic foams coatings. It has been shown that the best heat insulating properties belong to syntactic foam with composition of 60 vol. % ceramic microspheres with particle size of 1 - 40 μm (k = 0.029 W/m·K, R = 0.008 (m2·K)/W) and with composition of 80 vol. % glass hollow microspheres with particle size of 9 - 25 μm (k = 0.087 W/m·K, R = 0.008 (m2·K)/W). The results demonstrate that application of syntactic foams as thin insulating coatings is appropriate and they are an energy efficient material with number of benefits compare with the common thermal insulators.

An Analysis of the Structure and Thermal Conductivity of Hollow Microsphere Filled Syntactic Foams

Department of Civil Engineering, Faculty of Architecture

Varna Free University “Chernorizets Hrabar”

Department of Thermal Engineering, Shipbuilding Faculty

Civil and Environmental Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The influence of types and parameters of hollow microspheres in the composition of syntactic foams on their structure and coefficient of thermal conductivity...

An Analysis of the Structure and Thermal Conductivity of Hollow Microsphere Filled Syntactic Foams

Published Online: Jun 22, 2019

Page range: 36 - 41

DOI: https://doi.org/10.2478/cee-2019-0006

Keywords
Syntactic foams, Ceramic microspheres, Glass microspheres, Infrared thermography, Thermal conductivity

© 2019 Rositsa Petkova-Slipets et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

An Analysis of the Structure and Thermal Conductivity of Hollow Microsphere Filled Syntactic Foams

Published Online: Jun 22, 2019

Page range: 36 - 41

DOI: https://doi.org/10.2478/cee-2019-0006

KeywordsSyntactic foams, Ceramic microspheres, Glass microspheres, Infrared thermography, Thermal conductivity

© 2019 Rositsa Petkova-Slipets et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Syntactic foams, Ceramic microspheres, Glass microspheres, Infrared thermography, Thermal conductivity