Thermal conductivity of engineered bamboo composites

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• 作者：Darshil U. Shah ; Maximilian C. D. Bock ; Helen Mulligan…
• 刊名：Journal of Materials Science
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：51
• 期：6
• 页码：2991-3002
• 全文大小：3,039 KB
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• 作者单位：Darshil U. Shah (1)
  Maximilian C. D. Bock (1)
  Helen Mulligan (2)
  Michael H. Ramage (1)
  
  1. Department of Architecture, Centre for Natural Material Innovation, University of Cambridge, Cambridge, CB2 1PX, UK
  2. Cambridge Architectural Research, 25 Gwydir Street #6, Cambridge, CB1 2LG, UK
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Characterization and Evaluation Materials
  Polymer Sciences
  Continuum Mechanics and Mechanics of Materials
  Crystallography
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4803

文摘

Here we characterise the thermal properties of engineered bamboo panels produced in Canada, China, and Colombia. Specimens are processed from either Moso or Guadua bamboo into multi-layered panels for use as cladding, flooring or walling. We utilise the transient plane source method to measure their thermal properties and confirm a linear relationship between density and thermal conductivity. Furthermore, we predict the thermal conductivity of a three-phase composite material, as these engineered bamboo products can be described, using micromechanical analysis. This provides important insights on density-thermal conductivity relations in bamboo, and for the first time, enables us to determine the fundamental thermal properties of the bamboo cell wall. Moreover, the density-conductivity relations in bamboo and engineered bamboo products are compared to wood and other engineered wood products. We find that bamboo composites present specific characteristics, for example lower conductivities—particularly at high density—than equivalent timber products. These characteristics are potentially of great interest for low-energy building design. This manuscript fills a gap in existing knowledge on the thermal transport properties of engineered bamboo products, which is critical for both material development and building design. Electronic supplementary materialThe online version of this article (doi:10.​1007/​s10853-015-9610-z) contains supplementary material, which is available to authorized users.