Russo Pietro, Papa Ilaria, Pagliarulo Vito, Lopresto Valentina
Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli-Naples, Italy.
Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le Vincenzo Tecchio 80, 80125 Naples, Italy.
Polymers (Basel). 2020 May 8;12(5):1079. doi: 10.3390/polym12051079.
Recently, the growing interests into the environmental matter are driving the research interest to the development of new eco-sustainable composite materials toward the replacement of synthetic reinforcing fibers with natural ones and exploiting the intrinsic recyclability of thermoplastic resins even for uses in which thermosetting matrices are well consolidated (e.g., naval and aeronautical fields). In this work, polypropylene/basalt fabric composite samples were prepared by film stacking and compression molding procedures. They have been studied in terms of flexural and low-velocity impact behavior. The influence related to the matrix modification with a pre-optimized amount of maleic anhydride grafted PP as coupling agent was studied. The mechanical performances of the composite systems were compared with those of laminates consisting of the pure matrix and obtained by hot-pressing of PP pellets and PP films used in the stacking procedure. Results, on one side, demonstrated a slight reduction of both static and dynamic parameters at the break for specimens from superimposed films to ones prepared from PP pellets. Moreover, an outstanding improvement of mechanical performances was shown in the presence of basalt layers, especially for compatibilized samples.
近年来，对环境问题日益增长的关注促使研究兴趣转向开发新型生态可持续复合材料，以天然纤维替代合成增强纤维，并利用热塑性树脂固有的可回收性，即使在热固性基体已广泛应用的领域（如海军和航空领域）也是如此。在这项工作中，通过薄膜堆叠和压缩成型工艺制备了聚丙烯/玄武岩织物复合材料样品。对其弯曲和低速冲击行为进行了研究。研究了用预优化量的马来酸酐接枝聚丙烯作为偶联剂对基体进行改性的影响。将复合体系的力学性能与由纯基体组成的层压板的力学性能进行了比较，该层压板是通过对堆叠过程中使用的PP粒料和PP薄膜进行热压而获得的。一方面，结果表明，从叠加薄膜制备的试样到由PP粒料制备的试样，断裂时的静态和动态参数均略有降低。此外，在存在玄武岩层的情况下，尤其是对于增容样品，力学性能有显著提高。
