Heat Barrier Properties of Green Composites
Thermal insulation characteristics of natural fiber reinforced green composites are examined. The green composites were composed of epoxy resin and two kinds of natural fibers, namely abaca fiber and bamboo fiber. The natural fiber was unidirectionally aligned in the composites in order to preserve the hollow internal microstructure which is called lumen. Several kinds of green composite samples with different fiber contents were fabricated by a resin transfer molding technique and then their thermal conductivity was evaluated by using a steady-state method. The thermal conductivity and density of the green composites reinforced by abaca fiber having large lumen, decrease with increasing fiber content. On the other hand, in the case of bamboo fiber with small lumen, the thermal conductivity and density increase in a similar manner to that of glass fiber reinforced plastics (GFRP). In addition, thermal conductivity of all the samples has a good correlation with density; i.e., the thermal conductivity is proportional to the density. This unique fiber content dependence on thermal conductivity is related to the lumen size of the natural fiber.
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Document Type: Research Article
Publication date: 2012-08-01
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- The goal of the creation of a biobased economy is challenging to agriculture, forestry, academia, government and industry. The extractable resources of the Earth are finite, regardless of the quibble over when they will be depleted. The economic, political and social demands for biobased chemicals, materials and energy are expected to radically transform the materials industries, particularly the plastics industry as well as the biofuel industry. These changes will be based on the principles of sustainability, eco-efficiency, industrial ecology, and green chemistry and engineering. In keeping with the growth of knowledge in this field, there is a strong need for a forum to share original research related to biobased materials and bioenergy. The Journal of Biobased Materials and Bioenergy (JBMB) has been created as an international peer-reviewed periodical to fulfill the need for communication in these research areas. This journal will encompass related research activities in all fields of science, engineering and the life sciences.
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