CAJ | 학술논문

采用原位聚合法制备了石墨烯/MC尼龙(MCPA)复合材料。使用 X 射线衍射仪(XRD)和傅立叶红外光谱仪(FT-IR)对石墨烯的结构进行表征,研究了石墨烯含量对复合材料的力学和摩擦学性能的影响。研究结果表明,添加0.05%的石墨烯可以使 MC尼龙复合材料的拉伸强度、弹性模量、弯曲强度和弯曲模量分别提高了17.4%,14.7%,17.5%,24.3%；在干摩擦条件下,将石墨烯添加到 MC 尼龙中,能显著降低复合材料的磨损量,但复合材料的摩擦系数变化不明显；随着石墨烯含量的增加,石墨烯/MC尼龙复合材料的磨损机理由粘着磨损转变成疲劳磨损。
채용원위취합법제비료석묵희/MC니룡(MCPA)복합재료。사용 X 사선연사의(XRD)화부립협홍외광보의(FT-IR)대석묵희적결구진행표정,연구료석묵희함량대복합재료적역학화마찰학성능적영향。연구결과표명,첨가0.05%적석묵희가이사 MC니룡복합재료적랍신강도、탄성모량、만곡강도화만곡모량분별제고료17.4%,14.7%,17.5%,24.3%；재간마찰조건하,장석묵희첨가도 MC 니룡중,능현저강저복합재료적마손량,단복합재료적마찰계수변화불명현；수착석묵희함량적증가,석묵희/MC니룡복합재료적마손궤이유점착마손전변성피로마손。
Monomer casting nylon composites reinforced by different proportions of gra-phene(MCPA)were prepared by in situ polymerization and the structures of graphene oxide (GO)and reduced graphene oxide (rGO)was characterized by XRD and FT-IR.The me-chanical and tribological properties of MCPA composite were also tested.Results showed when the content of graphene was 0.05%,the tensile strength,elastic modulus,bending strength and bending modulus were increased by 17.4%,14.7%,17.5% and 24.3%,respec-tively.Under dry sliding,the abrasion loss of composites was largely reduced,but the fric-tion coefficient was not improved obviously.The worn mechanism of the composites has been changed from adhesive wear to fatigue wear with the increasing of graphene content.