Trociński Adrian, Dziurka Dorota, Thomas Marta, Mirski Radosław
Department of Mechanical Wood Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 28, 60-627 Poznań, Poland.
Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo 5, 60-965 Poznań, Poland.
Materials (Basel). 2024 Sep 17;17(18):4555. doi: 10.3390/ma17184555.
Although gypsum-based building materials exhibit many positive characteristics, solutions are still being searched for to reduce the use of gypsum or improve the physico-mechanical properties of board materials. In this study, an attempt was made to produce gypsum boards with hemp fibers. Although hemp fibers can be a specific reinforcement for gypsum-based board materials, they negatively affect the gypsum setting process due to their hygroscopic characteristics. Fibers impregnated with derivatives based on polyvinyl acetate, styrene-acrylic copolymer and pMDI (polymeric diphenylmethane diisocyanate) were used in this study. Gypsum-fiber boards produced with impregnated fibers showed approximately 30% higher mechanical properties as determined by the 3-point bending test. The positive effect of the impregnates on the hemp fibers was confirmed by FTIR (Fourier-transform infrared spectroscopy) and TG/DTA (thermogravimetric analysis/thermal gravimetric analysis) analysis.
尽管石膏基建筑材料具有许多积极特性，但仍在寻求解决方案以减少石膏的使用或改善板材的物理机械性能。在本研究中，尝试用麻纤维生产石膏板。虽然麻纤维可以作为石膏基板材的一种特殊增强材料，但由于其吸湿特性，会对石膏的凝结过程产生负面影响。本研究使用了浸渍有基于聚醋酸乙烯酯、苯乙烯 - 丙烯酸共聚物和pMDI（聚合二苯基甲烷二异氰酸酯）衍生物的纤维。通过三点弯曲试验测定，用浸渍纤维生产的石膏纤维板的机械性能提高了约30%。傅里叶变换红外光谱（FTIR）和热重分析/差示热分析（TG/DTA）分析证实了浸渍剂对麻纤维的积极作用。
