Investigation of Thermal Conductivity of Wood Sandwich Panels with Aluminium and Polypropylene Core
Abstract
Sandwich panels are
obtained by placing thick but rather light core material between two thin and
rigid lower and upper surface layers. Sandwich panels, especially due to their
light weight, high "strength / weight" ratio and durability compared
to conventional materials have many use areas such as aviation and space
industry, maritime, automotive and building industry. It is one of the biggest
advantages that sandwich materials can be obtained from different materials and
geometric structures by choosing the lower and upper surface layers and the
core for various applications. The aim of this study is to investigate the
thermal conductivity values of the sandwich panels, which are manufactured with
different types of surface and core materials in sandwich panels. An aluminium
and polypropylene as a core materials and alder, birch and scots pine wood
veneers were used as wood species for surface panels for manufacturing of
sandwich panels. A polyurethane modified epoxy- adhesive were used for binding
of core layer to both surface layers. Thermal conductivity of sandwich panels
was determined according to ASTM C 518 & ISO 8301. As a result of the
study, the highest thermal conductivity values were obtained from aluminium
core sandwich panels. The highest values were obtained from alder for the
aluminium core panels and scots pine for the polypropylene core panels as wood
species.
Keywords
Aluminium,Core,Polypropylene,Sandwich Panel,Thermal Conductivity
Kaynakça
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