Waste reuse is subject to an increasing amount of research aimed at reducing the negative impact of such material on the environment. This study explores the possibility of using plastic waste as reinforcement in composite materials. A family of materials was developed using an unsaturated polyester resin (UPR) organic matrix and various mineral fillers (marble powder, expanded perlite, sand, etc.), potentially allowing their use in wall and floor coverings and as raw materials in the manufacture of traditional ceramic tables. Selected mechanical properties of these materials were verified, including flexural strength, tensile strength, and density. The results demonstrate the role of reinforcement in oriented fibers or matt fabric in improving the mechanical properties of the materials. Flexural strength is improved via reinforcement in the form of random or woven plastic fibers (32.44 MPa). However, the use of expanded perlite as a filler results in a lower mechanical strength (31.16 MPa) than marble powder or sand because of its friability.
The optimization and streamlining of certain structures, parts manufacturing combined with high technical qualities (mechanical strength and physicochemical), recycling or reuse of solid wastes, reducing maintenance costs … have motivated the use and development of specific materials whose composition and characteristics accommodate themselves to technological constraints.The composite materials based on expanded perlite and unsaturated polyester resin (organic resins regenerated), were developed for this purpose. The basic idea is to combine in the same mass of different materials by their chemical and structural natures in order to increase mechanical, physical and / or chemical performance that can facilitate implementation. The composite materials developed during this study are developed from an organic resin associated with expanded perlite and other mineral fillers including marble powder and / or plastic wastes fibers.Different formulations are performed; taking into account both the proportion of expanded perlite, the nature of the inorganic fillers or reinforcements. The various tests carried out as mechanical and mechanic-chemical properties are reported.
The properties of materials used in building are enhanced by adding nanoparticles for improve energy efficiency. The objective of this study is to offer both numerical and analytical modeling methods of the thermal conductivity and mechanical property of composite materials. Various mineral charges were employed to reinforce the organic matrices of saturated polyester resin (UPR) with calcium carbonate (CaCo3) and expanded perlite particles. The study employs the finite‐element software COMSOL to conduct a numerical investigation of thermal transport in an elementary cell. The purpose is to ascertain the thermal conductivity of composites and examine the impact of contact resistance and the volume fraction of nanoparticles on the effective thermal conductivity. The results indicate that the numerical model proposed is consistent with the Hashin‐Shtrikman analytical model and experimental measurements. In another hand, the mechanical property is computed based on Mori‐tanaka analytical model of homogenization and finite element method by Digimat‐MF/FE, which gives enhanced elastic behavior of composite in function of volume fraction of nanoparticles, with high Young modulus and low Poisson ratio. The results indicate the performance of nanoparticles in improving thermomechanical behavior of building materials, and also in other applications.
Many theoretical and semi-empirical approaches have been developed to determine the thermal conductivity of composites. These models give a better estimate for low filler concentrations. The work in this paper is aimed at the numerical and experimental study of the thermal behavior of polymer matrix composite materials (PSU and BaTiO3). The numerical resolution of the thermal heat transport for an elementary cell is based on the finite element technique. Special attention is paid to the effect of contact resistance, barium titanate fraction, and quenching temperature on the effective thermal conductivity and dynamic behavior of the composite. The obtained results show that the proposed numerical model agrees well with the experimental measurements and the analytical models of Hatta-Taya and Hashin-Shtrikman.
This research paper focuses on investigating the thermal conductivity behavior of polymer matrix composite materials, specifically those composed of PSU and BaTiO3, both experimentally and numerically. The thermal conductivity of composites has been studied using a variety of theoretical and semi-empirical methods. However, in cases where the filler concentration is minimal, these models provide a superior estimate. To numerically resolve the thermal heat transfer for an elementary cell, the finite element method is employed in this study. The impact of contact resistance, barium titanate percentage, and quenching temperature on the composite’s effective thermal conductivity and dynamic behavior is given consideration. The results demonstrate that the suggested numerical model is in good agreement with experimental measurements as well as Hatta–Taya and Hashin–Shtrikman’s analytical models. The results provide significant insight into the thermal conductivity behavior of composites, which can inform the development of more effective thermal management solutions for composite materials. Effective thermal management is critical for the successful application of polymer matrix composite materials in various engineering applications. Thermal conductivity is a key factor in thermal management and is influenced by factors such as the concentration of filler particles, their shape, size, and distribution, and the matrix material’s properties.
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