Wieczorska Agata, Drewing Sebastian
Faculty of Marine Engineering, Gdynia Maritime University, Morska St. 81-87, 81-225 Gdynia, Poland.
Materials (Basel). 2024 Dec 3;17(23):5916. doi: 10.3390/ma17235916.
This research concerns the manufacture and characterisation of epoxy composites with the addition of carbonisate, obtained by the pyrolysis of MDF (medium-density fibreboard) furniture board waste. The laminated composites were made by hand lamination, with the carbonisate used as a filler to improve the mechanical properties of the composite. The carbonisate was obtained by the thermal decomposition of MDF waste in an anaerobic environment by pyrolysis, which is an efficient method of waste management and material recycling. The resulting carbonisate was integrated into an epoxy resin matrix to investigate its potential as a reinforcing agent. The article describes a study on the hardness of epoxy-resin-based composites to which carbonisate was added in different fractions and percentages. The aim of the research was to test the possibility of using char as a component in improving the mechanical properties of epoxy composites with a view towards creating a durable recycled material with optimal parameters. As part of the study, a statistical analysis of the results of hardness measurements was carried out to accurately assess the effect of the quantity and size of the carbonate particles on the mechanical properties of the materials. The analysis identified significant differences between samples and verified the repeatability of the results. It was found that the addition of carbonisate to the A0 base sample (without the addition of carbonisate) leads to a significant hardening of the material. This was confirmed by the higher medians of samples A01 (carbonisate 5% with a 0.5 mm fraction), A02 (carbonisate 7.5% with a 0.5 mm fraction), and A03 (carbonisate 5% with a 1.0 mm fraction) compared to the base sample. The most homogeneous hardness was shown in sample A02, with the highest concentration of results and the lowest values of standard deviation and spread. The results indicated that the addition of carbonate significantly increased the hardness of the composite materials, with optimal stability achieved at 7.5% (by weight) of carbonate with a 0.5 mm fraction. The conducted research precisely determined the influence of the amount and characteristics of carbonisate particles on the mechanical properties of the materials, which enables the more effective designing of future composites. The statistical results provide a reliable basis for evaluating the potential applications of these materials in various industrial sectors, such as construction, automotive and aerospace, where high hardness and durability are important.
本研究涉及添加由中密度纤维板（MDF）家具板废料热解得到的碳酸盐的环氧复合材料的制造与表征。层压复合材料通过手工层压制成，其中碳酸盐用作填料以改善复合材料的机械性能。碳酸盐是通过在厌氧环境中对MDF废料进行热解而获得的，这是一种有效的废物管理和材料回收方法。将所得的碳酸盐整合到环氧树脂基体中，以研究其作为增强剂的潜力。本文描述了一项关于添加不同比例和百分比碳酸盐的环氧树脂基复合材料硬度的研究。该研究的目的是测试使用炭作为一种成分来改善环氧复合材料机械性能的可能性，以期制造出具有最佳参数的耐用回收材料。作为研究的一部分，对硬度测量结果进行了统计分析，以准确评估碳酸盐颗粒的数量和尺寸对材料机械性能的影响。分析确定了样品之间的显著差异，并验证了结果的可重复性。结果发现，向A0基础样品（不添加碳酸盐）中添加碳酸盐会导致材料显著硬化。与基础样品相比，样品A01（碳酸盐5%，粒径0.5毫米）、A02（碳酸盐7.5%，粒径0.5毫米）和A03（碳酸盐5%，粒径1.0毫米）的中位数更高，证实了这一点。样品A02显示出最均匀的硬度，结果集中度最高，标准差和离散度值最低。结果表明，添加碳酸盐显著提高了复合材料的硬度，在碳酸盐含量为7.5%（重量）、粒径为0.5毫米时达到最佳稳定性。所进行的研究精确确定了碳酸盐颗粒的数量和特性对材料机械性能的影响，这有助于更有效地设计未来的复合材料。统计结果为评估这些材料在建筑、汽车和航空航天等各个工业领域的潜在应用提供了可靠依据，在这些领域中，高硬度和耐用性至关重要。
