- 學位論文
Nylon 6/Fe3O4@Graphene複合材料之研究
The Study of Nylon 6/Fe3O4@Graphene Composites
摘要
本研究利用球磨氧化法製備小粒徑石墨烯，再以奈米金屬還原法將四氧化三鐵還原至石墨烯表面，藉由掃描式電子顯微鏡、能量分散光譜儀、x-ray繞射分析儀、比表面積分析儀、電阻係數以及熱重分析儀等儀器之測試，獲得最適當之金屬還原法配比為氧化石墨烯：氯化亞鐵＝1 g：0.5 g。 將製備好之Fe3O4@Graphene複合粉體以原位聚合法方式添加至Nylon 6的製程中，並於添加量分別為0 wt%、0.1 wt%、0.5 wt%、1 wt%、2 wt%、3 wt%時，測試其傅立葉轉換紅外線光譜、掃描式熱卡分析、x-ray繞射分析、磁滯曲線、電阻係數量測和拉伸試驗之結果，以討論Nylon 6複合材料的功能性質。 由各項測試可知，Fe3O4@Graphene不僅具備良好導電度，同時也具有電磁效應，屬於多功能複合粉體。然而添加Fe3O4@Graphene至Nylon 6高分子中，亦能增進高分子材料之電磁特性。當添加0.1 wt%Fe3O4@Graphene粉體時，能夠增強Nylon 6材料之機械性能；而添加量上升至3 wt%時，不但使得電阻係數相較於純Nylon 6降低兩個級數，在磁滯曲線上，也能發現材料具備明顯電磁性質。
並列摘要
The method of ball-milling and oxidation were applied in this study to produce small-sized particle graphene, then the reduction of metal nano-particle was introduced to reduce Fe3O4 onto the graphene surface. By using Scanning Electron Microscope, Energy Dispersive Spectrometer, X-ray Diffractometer and also doing BET analysis, resistivity test and TGA test, we obtained the optimal ratio for Graphene Oxide to FeCl2 is 1 g to 0.5 g. The Fe3O4@Graphene powder at 0.1 wt%, 0.5 wt%, 1 wt%, 2 wt% and 3 wt% were added respectively to Nylon 6 through the in situ polymerization. The functional properties of these Nylon 6 composites were discussed by the results of FTIR, DSC, XRD, VSM, resistivity test and tensile test. Due to the results we understand that Fe3O4@Graphene powder not only has great conductivity, but possesses electromagnetic effects. Adding the powder to Nylon 6 could enhance its electromagnetic property. Adding 0.1 wt% Fe3O4@Graphene powder, it could strengthen the mechanical property of Nylon 6. Furthermore, while the adding amount was 3 wt%, it could reduce the resistivity by 2 levels, but VSM showed that the composites presented obvious electromagnetic property.