Al-Maqdasi Zainab, Gong Guan, Nyström Birgitha, Emami Nazanin, Joffe Roberts
Department of Engineering Materials and Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden.
Rise Sicomp AB, Fibervägen 2, SE-941 26 Öjebyn, Sweden.
Materials (Basel). 2020 May 1;13(9):2089. doi: 10.3390/ma13092089.
This paper investigates the utilization of commercial masterbatches of graphene nanoplatelets to improve the properties of neat polymer and wood fiber composites manufactured by conventional processing methods. The effect of aspect ratio of the graphene platelets (represented by the different number of layers in the nanoplatelet) on the properties of high-density polyethylene (HDPE) is discussed. The composites were characterized for their mechanical properties (tensile, flexural, impact) and physical characteristics (morphology, crystallization, and thermal stability). The effect of the addition of nanoplatelets on the thermal conductivity and diffusivity of the reinforced polymer with different contents of reinforcement was also investigated. In general, the mechanical performance of the polymer was enhanced at the presence of either of the reinforcements (graphene or wood fiber). The improvement in mechanical properties of the nanocomposite was notable considering that no compatibilizer was used in the manufacturing. The use of a masterbatch can promote utilization of nano-modified polymer composites on an industrial scale without modification of the currently employed processing methods and facilities.
本文研究了商用石墨烯纳米片母粒在改善通过传统加工方法制造的纯聚合物和木纤维复合材料性能方面的应用。讨论了石墨烯片层的长径比（由纳米片层中的不同层数表示）对高密度聚乙烯（HDPE）性能的影响。对复合材料的力学性能（拉伸、弯曲、冲击）和物理特性（形态、结晶和热稳定性）进行了表征。还研究了添加纳米片层对不同增强剂含量的增强聚合物的热导率和扩散率的影响。总体而言，在存在任何一种增强剂（石墨烯或木纤维）的情况下，聚合物的力学性能都会提高。考虑到在制造过程中未使用增容剂，纳米复合材料力学性能的改善是显著的。母粒的使用可以在不改变当前采用的加工方法和设备的情况下，促进纳米改性聚合物复合材料在工业规模上的应用。
