Poly (vinyl alcohol) (PVA)/ multi-layered graphene (MLG) / multi-walled carbon nanotubes (MWCNT) nanocomposites of different compositions were made through the solution casting method. Filler loadings used were 20 wt. % MLG, 17.5 wt.% MLG / 2.5 wt.% MLG, 15 wt.% MLG / 5 wt.% MWCNT and 10 wt.% MLG / 10 wt.% MWCNT. Mechanical strength of the composites was evaluated by testing their tensile and viscoelastic properties. Differential thermal analysis (DTA) showed improved thermal stability for hybrid composites when compared to that of PVA/ 20 wt.% MLG composite. A 2 mm hot pressed multilayered structure of hybrid composite (10 wt.% MLG / 10 wt.% MWCNT) exhibited the EMI shielding effectiveness of ∼ 39 dB in the X-band. The electrical conductivity of the hybrid composites improved significantly with MWCNT content and reached to the order of 10^-5 S/cm with a 10 wt.% MWCNT addition. The hybrid composites also exhibited superior wear resistance when compared with that of PVA/ MLG composite of same filler loading.

通过溶液流延法制备了组成不同的聚乙烯醇（PVA）/多层石墨烯（MLG）/多壁碳纳米管（MWCNT）纳米复合材料。所用的填料量为20重量％。MLG％，17.5wt％MLG / 2.5wt％MLG，15wt％MLG / 5wt％MWCNT和10wt％MLG / 10wt％MWCNT。复合材料的机械强度通过测试其拉伸性能和粘弹性来评估。与PVA / 20 wt。％MLG复合材料相比，差热分析（​​DTA）显示了混合复合材料的改进的热稳定性。混合复合材料的2 mm热压多层结构（10 wt。％MLG / 10 wt。％MWCNT）在X波段的电磁波屏蔽效果约为39 dB。杂化复合材料的电导率随MWCNT含量的提高而显着提高，达到10数量级。^-5 S / cm，添加了10 wt。％MWCNT。与相同填充量的PVA / MLG复合材料相比，杂化复合材料还具有优异的耐磨性。