碳纤维增强尼龙复合材料渗透模型的研究

Research on Infiltration Model of Carbon Fiber Reinforced In-situ Polymerization Nylon 6 Composite

建立了热塑性树脂熔体渗透浸渍纤维的理论模型,由此表征了工艺参数、熔体黏度和纤维结构对浸渍时间的影响规律。结果表明,熔融尼龙树脂复合材料的理论纤维体积率很难达到70%以上。采用原位聚合方法能使尼龙树脂熔体黏度降低几个数量级,并能提高树脂基体熔体对纤维的浸渍效率。

A mathematical model of the thermoplastic resin impregnating the fibers is established. And this model can effectively reveal the regularity of the impregnation time affected by resins, process parameters and fiber structure. According to the results calculated from the model, the theoretical maximum fiber volume content of the melt Nylon 6 composite is difficult to exceed 70%, and its impregnation time is still long even though the resin is pro- cessed by viscosity reduction. As the monomer has a lower viscosity compared with the melt Nylon 6, the impregnation efficiency can be greatly improved by the in situ polymerization.