Effect of dispersion methods on the performance of novel rigid copolymer polyurethane nanocomposites based on graphene nanofillers
Effect of dispersion methods on the performance of novel rigid copolymer polyurethane nanocomposites based on graphene nanofillers
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DOI：
10.1080/25740881.2021.1991952
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发表时间：
2021-10-25
影响因子：
2.7
通讯作者：
Saiani, Alberto
中科院分区：
文献类型：
--
作者：
Albozahid, Muayad;Naji, Haneen Zuhair;Saiani, Alberto
采用原位聚合（ISP）、熔融复合（MC）和溶液混合（SM）制备了刚性共聚物聚氨酯（rcpu）纳米复合材料。该共混工艺使GNP具有良好的分散性和较强的相互作用，从而使RCPU/GNP纳米复合材料具有良好的性能。采用红外光谱（FTIR）对RCPU/GNP纳米复合材料的结构进行了研究。热重分析表明，随着GNP纳米填料的加入，RCPU纳米复合材料的热稳定性有所提高。流变学分析表明，在不同的分散方式下，网络形成具有良好分散的GNP。还进行了热学和电学测试，证实国民生产总值的分散和相互作用可在提高热学和电学性能方面发挥关键作用。这种RCPU矩阵性能的显著改善可能会导致这种材料用于不同的应用。
The Rigid Copolymer Polyurethanes (RCPUs) as nanocomposites were synthesized by in-situ polymerization (ISP), melt compounding (MC), and solution mixing (SM) with wide range of weight ratios of graphite nanoplatelets (GNP). The blending process was utilized to obtain well- dispersed of GNP and thus strong interaction, leading to an effective performance of the RCPU/GNP nanocomposites. The structure of RCPU/GNP nanocomposites was studied using FTIR test. The thermal stability of RCPU nanocomposites was seen by TGA analysis, showing an increase with addition of GNP nanofillers. Rheology analysis revealed network formation with well-dispersed GNP regarding different dispersion approaches. Thermal and electrical tests were also conducted, approving that dispersion and interaction of GNP can play a crucial role for enhancing the thermal and electrical properties. Such a significant improvement in RCPU matrix performance could lead to the use of this material for different application.