Development of Green Insulation Boards from Kenaf Fibres Part 2: Characterizations of Thermal and Water Absorption

Abstract

The aim of this study was to investigate the thermal performance, water absorption and dimension stability against water of the green insulation boards. The results show that the thermal conductivity decreased with increasing fibre contents and reached its minimum value (0.0535 w/mk) for the 60/40 kenaf / PU weight %. Contrarily, thermal resistance increased with increasing fibres contents, up to its maximum value (0.09 k.m2/w) for the 60/40 kenaf / PU weight %. The minimum water absorption percentage and thickness swelling were recorded at a weight of 50% kenaf fibres. The effects of the alkaline treatment were significant enough to increase the thermal conductivity.

Study of the properties and hygrothermal behaviour of alternative insulation materials based on natural fibres

“…We considered the research of the scientific teams from Europe and Asia. [1][2][3][4][5][6][7][8] These materials represent highly progressive building materials with a low carbon footprint and a low primary-energy input. They are locally available and easily renewable raw materials that can substitute non-renewable materials used in the production of insulation materials (e.g., foam plastic materials).…”