Characterization and mechanical properties of porous ceramics with different polymethyl metacrylate (PMMA) contents

Mohd Kasim, Muhamad Syazwan Zulhilmi (2023) Characterization and mechanical properties of porous ceramics with different polymethyl metacrylate (PMMA) contents. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

Porosity refers to the amount of empty space as a percentage inside any ceramic. Based on previous history, ceramics were the best material to be used as a cooling system by past people. Researchers have conducted numerous studies on the properties of ceramic materials. The problem that was being faced while producing ceramics was that the strength was not sufficient to withstand higher pressure than normal. Normally, the production of ceramics in this era is not applicable to all industries. Thus, the purpose of this study is to improve the strength of ceramic, study its properties, and produce ceramic samples with different contents of polymethyl methacrylate. The process starts with the selection of materials. Clay, feldspar, and silica were selected as the main materials in the production of these samples. Different contents of polymethyl methacrylate, starting with 0 %, 3 %, 5 %, and 10 % of the total weight of the mixtures, were being mixed to form a mixture. The mixtures then proceeded with the mixing process with the help of ball millings, and the process took around 3 hours to completed which to ensure that the powder was in a fine powder state. Next, after the mixing process, the mixtures undergo a sieving process. The mixtures were then placed inside the mould, where the pressing process began. After the process of pressing completed, the sintering process began. The following steps are the testing phase. It consists of X-ray diffraction analysis, density and porosity tests, bending tests, and finally a scanning electron microscope. The study's findings demonstrate that the sample's durability will decrease as its porosity rises. The presence of Muscovite occurs during the formation of the sample when this pore-forming agent is present, as shown by the sharp peak on the graph, and phases that cannot be identified due to machine limitations occur during the formation of the low peak. Additionally, SEM images provide visual proof that the addition of pore-forming agents to ceramic samples causes pore enlargement.

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