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Development of Structural Panels from Flax Shives, Fiber & Hpde

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:   No Citation available.
Authors:   A Rana, S Panigrahi, M Soleimani, B S Panigrahy, P Chang
Keywords:   Biocomposite, flax shives, HDPE, extrusion, compression molding

Biocomposite panels are made from hemp stalk, flax shives or other wooden materials as the main part of the product and the other important part is binder. Some advantages of such biocomposite board are low density, insulation capacity against heat and moisture transfer, and biodegradability, as well as cheapness compared to concrete based materials. In this research, two binders based on HDPE (High Density Polyethylene) with two different percentages of Flax fiber (as reinforcement in order to improve the mechanical and physical properties of the product) were assessed for flax shives to make panel board. The flax fiber was chemically treated to improve the adhesion between the fiber and polymer. According to binder formulations, ingredients were mixed and extruded using double extruder. The extruded materials were pelletized and used as binder for flax shives at three ratios. For this purpose,compression molding technique was applied to enhance the efficiency of the binder. Biocomposite board quality was studied by doing physical and mechanical tests on the products including: tensile strength, bending strength, melt flow index, thermal properties and water absorption following ASTM standards.

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