采用树脂传递模塑工艺(RTM)研究了三种典型苎麻纤维织物结构(平纹、斜纹和缎纹)对树脂流动性的影响,并研究了三种苎麻纤维织物结构对其增强酚醛树脂复合材料的拉伸性能和层间剪切性能的影响。结果表明,苎麻纤维织物树脂渗透率主要受纤维屈曲和流道面积的影响。斜纹和缎纹苎麻织物的纤维屈曲较小且流道面积较大,其织物的树脂渗透率较大,同时,较小的纤维屈曲使其增强的复合材料拉伸性能也较优。然而,不同织物形式对苎麻纤维织物/树脂复合材料的层间性能影响不大。
The permeability of three typical ramie fiber woven fabrics(plain woven,twill woven and satin woven) was studied by resin transfer molding method(RTM).The tensile and interlaminar properties of the three ramie fabrics reinforced phenolic resin composites were also investigated.It is indicated that the permeability of ramie woven fabrics is mainly influenced by the crimp of the fiber and the flow area of the fabrics.The permeability of twill woven and satin woven fabrics is preferable,compared with that of plain woven ramie fabric.Tensile properties of twill woven and satin woven ramie fabric reinforced composites are better than that of plain woven counterpart due to less fiber crimps.It is also concluded that the woven styles of ramie fabrics do not show obvious effects on the interlaminar shear properties of the composites.