氟化石墨烯复合膜的制备及胶黏剂对其性能的影响

Preparation of fluorinated graphene composite film and effect of adhesive on its properties

将具有超疏水性能的氟化石墨烯(FG)与不同胶黏剂组合制备成复合膜,研究了抽滤、喷涂制备工艺以及胶黏剂的种类[聚苯乙烯(PS)、聚碳酸酯(PC)、聚丙烯腈(PAN)、聚偏氟乙烯(PVDF)、聚四氟乙烯(PTFE)、聚乙烯吡咯烷酮(PVP)]对FG复合膜性能的影响,同时探究了FG对改性高分子胶黏剂的作用。利用扫描电子显微镜(SEM)、接触角测量仪、粗糙度测量仪对FG复合膜进行表征测试,结果表明,胶黏剂的分散性、化学结构、亲疏水性会影响到复合膜的表面结构、机械耐磨性、疏水性。以PVDF为代表的柔性疏水胶黏剂在胶黏FG成膜过程中显示出独特的优势。同时,FG与胶黏剂复合后薄膜具有更高的表面疏水性及导热性。

Fluorinated graphene(FG)with superhydrophobic properties is combined with different adhesives to prepare FG composite film.The influences of filtration,spray coating process,and adhesive types on the properties of FG composite film are investigated.Adhesive types include polystyrene(PS),polycarbonate(PC),polyacrylonitrile(PAN),polyvinylidene fluoride(PVDF),polytetrafluoroethylene(PTFE),polyvinylpyrrolidone(PVP).Additionally,the effect of FG on modified polymer adhesives is explored.The prepared FG composite film is characterized by means of scanning electron microscopy(SEM),contact angle measurement,and roughness measurement.The results show that the dispersibility,chemical structure,and hydrophobicity of the adhesive have an impact on the surface structure,mechanical wear resistance,and hydrophobicity of the composite film.Flexible hydrophobic adhesives,represented by PVDF,exhibit unique advantages during the adhesion process with FG.Furthermore,the composite film presents better surface hydrophobicity and thermal conductivity due to the combination of FG with adhesives.