Manufacture Dry Porous Carbonate Materials with Crack Free

Mohammed, Anmar Lazem; Alabidalkreem, Omer S.; Khidhir, Awad H.

doi:10.21608/svusrc.2023.204639.1119

Manufacture Dry Porous Carbonate Materials with Crack Free

Document Type : Original research articles

Authors

¹ Mechanical Engineering Department, College of Engineering, University of Mosul, Mosul, Iraq

² Department of Mechanical Engineering, Faculty of Engineering, University of Mosul, Mosul, IRAQ

10.21608/svusrc.2023.204639.1119

Abstract

: pickering foam is a water foam stabilized using solid particles, and this foam can be used as a material in the production of lightweight porous insulating materials. This is done by pouring it into molds, then drying and finally foaming it. One of the most important problems accompanying the drying of bicarbonate foam is the phenomenon of shrinkage in the models resulting from the liquid leaving it by evaporation, resulting in capillary pressures generated inside it. Due to the shrinkage phenomenon, defects and cracks sometimes occur during the drying process that appear on the surface. The process of defects and cracks formation during the drying process depends on the drying conditions such as temperature, relative humidity, and the type of used support angle θ (in addition to the mechanical specifications of the models). Understanding the drying procedures helps researchers and workers in the production of such porous materials, and in choosing the appropriate drying conditions and avoiding any defects in the product. In this study, the effect of the mechanical specifications of the model was investigated by adding surface tension-reducing agents at different concentrations to the models during the drying process, as well as studying the effect of the contact angle (θ) of the support on the probability of crack formation and the mechanical specifications of the dried model. It was found that the value of the contact angle (θ) has a direct effect on cracks and defects.

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