Mechanical and Thermomechanical Properties of Clay-Cowpea (Vigna Unguiculata Walp.) Husks Polyester Bio-Composite for Building Applications
Source abstract
Abstract
This study investigates the feasibility of creating a clay polymer-based composite using cowpea husk (CPH) as filler for production of roof tiles. Polymeric composites were fabricated by mixing unsaturated polyester (UPT) resin with cowpea husk at different filler weights and curing. A hybrid composite was produced with the addition of 3 wt.% clay and all samples produced were subjected to flexural, hardness and dynamic mechanical analysis (DMA) tests. The effect of clay addition on the mechanical and thermo-mechanical behaviour of formulated composites was investigated. The morphological analysis of the mono and hybrid system shows a rough and coarse inhomogeneous surface with voids created due to the addition of CPH filler for the mono reinforced and clay uniformly filling the voids that were created by the CPH in the hybrid composite. It is observed that hardness, tensile modulus and flexural modulus of hybrid composites increase with an increase in the CPH contents, while the strength and flexural strength all decrease with filler content. The optimal composition was obtained using Grey relational analysis (GRA) at 18% CPH for both mono and hybrid composite. The results imply that the composite combination can be used in making rooftiles and/or also in applications where low strength is required.
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Research context
OpenAlex topics: Natural Fiber Reinforced Composites · Innovations in Concrete and Construction Materials · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Material Science and Engineering, African University of Science and Technology (AUST), Km 10 Airport Road, Galadimawa Roundabout, Abuja 900109, Nigeria
Department of Mechanical Engineering, University of Calabar, Calabar 540004, Nigeria
Department of Mechanical/Mechatronic Engineering, Alex Ekwueme Federal University, Ndufu-Alike 480213, Nigeria
Department of Theoretical and Applied Physics, African University of Science and Technology (AUST), Km 10 Airport Road, Galadimawa Roundabout, Abuja 900109, Nigeria
Department of Mechanical Engineering, Cross River University of Technology, Calabar 540252, Nigeria
Department of Wood Products Engineering, University of Ibadan, Ibadan 200132, Nigeria
Funding
Pan African Materials Institute (PAMI)
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