6533b82dfe1ef96bd1291a37

RESEARCH PRODUCT

Development and characterization of a bio-based epoxy matrix for high-grade bio-based composites

subject

description

This study aims to develop 100% bio-based hemp/epoxy composites for semi-structural and structural applications. The thermal and mechanical performances of a 100% bio-based matrix derived from biomassare evaluated and reveal properties in the same order of magnitude as those obtained for polyepoxides based on DGEBA, that means a glass transition temperature of approximately 150°C and mechanical properties in the order of 120MPa for the maximum stress and 3.2 GPa for the tangent apparent modulus. This natural origin matrix is then used for the manufacture of composites reinforced with hemp rovings. The bending properties of these 100% bio-based materials are equivalent to those determined for composites reinforced with hemp rovings impregnated in a matrix based on DGEBA.The maximum stress is in the order of 200 MPa and the apparent tangent modulusis approximately equal to 15 GPa. Thus, these results are very promising for the development of this type of environmentally friendly materials for high-grade applications.