Gargol Mateusz, Klepka Tomasz, Klapiszewski Łukasz, Podkościelna Beata
Department of Polymer Chemistry, Faculty of Chemistry, Institute of Chemical Science, Maria Curie-Skłodowska University, M. Curie-Skłodowska Sq. 3, PL-20031 Lublin, Poland.
Department of Technology and Polymer Processing, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, PL-20618 Lublin, Poland.
Polymers (Basel). 2021 Feb 7;13(4):503. doi: 10.3390/polym13040503.
The synthesis, thermal, and mechanical properties of epoxy resin composites incorporating waste fibers of hemp were studied. Five different systems with increasing quantity of the eco-filler were obtained. For the synthesis of polymeric materials, the commercial epoxy resins Epidian 5 and triethylenetetramine (TETA) were applied as crosslinking agents. The composites were obtained based on the polyaddition reaction of an amine group with an epoxide ring. ATR/FT-IR (Attenuated Total Reflection-Fourier Transform Infrared) analysis was used to confirm the chemical structure of the composites and the course of curing processes. Moreover, the influence of the eco-friendly components on the mechanical properties was determined, while thermal properties of the materials were investigated by thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). Dynamic mechanical studies (DMA) and Shore hardness tests of the obtained polymers were also carried out. The DSC curves and DMA analysis revealed that all materials were characterized by a similar glass transition range. Furthermore, the DMA and hardness measurements of the composites demonstrated an increasing elasticity with the increase in the amount of eco-filler present in the compositions.
研究了含有大麻废纤维的环氧树脂复合材料的合成、热性能和力学性能。获得了五种不同体系，其中生态填料的含量逐渐增加。对于聚合物材料的合成，使用市售环氧树脂Epidian 5和三乙烯四胺（TETA）作为交联剂。复合材料是基于胺基与环氧环的加成反应获得的。采用衰减全反射傅里叶变换红外光谱（ATR/FT-IR）分析来确认复合材料的化学结构和固化过程。此外，还测定了环保成分对力学性能的影响，同时通过热重分析（TGA）和差示扫描量热法（DSC）研究了材料的热性能。还对所得聚合物进行了动态力学研究（DMA）和肖氏硬度测试。DSC曲线和DMA分析表明，所有材料的玻璃化转变范围相似。此外，复合材料的DMA和硬度测量表明，随着组合物中生态填料含量的增加，弹性增加。
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