Influence of graphene on the cell morphology and mechanical properties of extruded polystyrene foam
Influence of graphene on the cell morphology and mechanical properties of extruded polystyrene foam
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DOI：
10.1177/0021955x14566084
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发表时间：
2015-07-01
影响因子：
2.5
通讯作者：
Altstaedt, Volker
中科院分区：
文献类型：
--
作者：
Okolieocha, Chimezie;Koeppl, Thomas;Altstaedt, Volker
将纳米颗粒结合到聚合物泡沫中不仅增强了泡孔壁和支柱，而且还可以导致泡孔尺寸的减小和泡孔形态的增强，这进而产生具有上级机械性能的泡沫。为此，一些研究集中在确定接近理想的成核剂，以及了解加工参数对泡沫泡孔形态的影响。本研究提供了一种系统的方法，以低密度聚苯乙烯泡沫塑料生产的石墨烯（热还原氧化石墨），滑石粉和碳纳米管（MWCNTs）通过泡沫挤出。值得注意的是，聚苯乙烯/热还原氧化石墨泡沫的泡孔形态显示出增强的泡孔均匀性，与纯聚苯乙烯及其对应物相比，泡孔密度大幅增加超过一个数量级。
The incorporation of nanoparticles to polymer foams not only reinforces the cell walls and struts but can also lead to a decrease of cell size and enhanced cell morphology which in turn, yield foams with superior mechanical properties. For this purpose, several studies have focused on identifying close-to-ideal nucleating agents as well as understanding the influence of processing parameters on foam cell morphology. This research provides a systemic approach to low-density polystyrene foams produced with graphene (thermally reduced graphite oxide), talc and carbon nanotubes (MWCNTs) via foam extrusion. Remarkably, the cell morphologies of polystyrene/thermally reduced graphite oxide foams show enhanced cell homogeneity with a tremendous increase of the cell densities by more than one order of magnitude compared to neat polystyrene and its counterparts.