Graphene nanoplatelets (GNP) are used to produce wood plastic composites (WPC) with improved electrical and thermal conductivity. The polypropylene/wood/GNP hybrid composites are produced by melt compounding followed by hot pressing. The effect of GNP loadings (5, 10 and 15 wt%) on electrical conductivity, thermal conductivity, tensile properties, and thermal degradation of hybrid WPC containing 20 wt% of wood flour is studied. The effect of fast and slow cooling rates during hot pressing on the surface resistivity of hybrid WPC is evaluated. Scanning electron microscopy of the tensile fracture surface and polished cross-sections of hybrid WPC is analysed. The hybrid WPC containing 20 wt% wood flour and 15 wt% of GNP (PP-W20-G15) is measured to show surface resistivity of 2.05E + 06 Ω/sq and thermal conductivity of 0.61 W/m.K. There is a significant increase in electrical and thermal conductivity of PP-W20-G15 when compared to WPC containing 20 wt% of wood flour (PP-W20). The wood flour helps with the distribution of GNP in PP-W20-G15 by which the surface resistivity is improved when compared to PP filled with 15 wt% GNP. It was found that the surface resistivity of PP-W20-G15 was dependent on the cooling rate used during the hot pressing. There is a considerable decrease in tensile strength and an increase in the tensile modulus of hybrid WPCs compared to PP-W20 and neat polypropylene.

石墨烯纳米片（GNP）用于生产具有改善的电导率和导热率的木塑复合材料（WPC）。聚丙烯/木材/ GNP杂化复合材料是通过熔融混炼然后进行热压生产的。研究了GNP含量（5、10和15 wt％）对包含20 wt％木粉的混合WPC的电导率，导热率，拉伸性能和热降解的影响。评估了热压过程中快速冷却速度和缓慢冷却速度对混合WPC表面电阻率的影响。分析了混合WPC的拉伸断裂表面和抛光横截面的扫描电子显微镜。测量包含20 wt％的木粉和15 wt％的GNP（PP-W20-G15）的混合WPC，以显示2.05E + 06Ω/ sq的表面电阻率和0.61 W / mK的导热率 与包含20 wt％的木粉的WPC（PP-W20）相比，PP-W20-G15的电导率和导热率显着提高。木粉有助于在PP-W20-G15中分配GNP，与填充15 wt％GNP的PP相比，可以改善表面电阻率。发现PP-W20-G15的表面电阻率取决于热压过程中使用的冷却速率。与PP-W20和纯聚丙烯相比，混合WPC的拉伸强度显着降低，拉伸模量提高。发现PP-W20-G15的表面电阻率取决于热压过程中使用的冷却速率。与PP-W20和纯聚丙烯相比，混合WPC的拉伸强度显着降低，拉伸模量提高。发现PP-W20-G15的表面电阻率取决于热压过程中使用的冷却速率。与PP-W20和纯聚丙烯相比，混合WPC的拉伸强度显着降低，拉伸模量提高。