利用聚丙烯及苎麻布作原料、马来酸酐接枝聚丙烯(MAPP)作界面增容剂,采用模压工艺,在175℃,5、10、15及20 MPa四种压力下成型复合材料,研究了MAPP质量分数、苎麻布质量分数及成型压力对复合材料力学性能的影响.复合材料的拉伸强度和弯曲强度在MAPP加入量为3%和5%时分别达最大值46.72 MPa和68.43 MPa,较无MAPP的复合材料的强度值分别提高50.95%和61.81%;拉伸模量及弯曲模量因使用MAPP而增加,但拉伸断裂伸长率却会下降.随着苎麻布质量分数增加,复合材料拉伸强度、拉伸模量、弯曲模量均逐渐增加;苎麻布质量分数10%、20%的复合材料在较低的压力(5、10 MPa)下成型时,其拉伸强度和弯曲强度值相对更高,当苎麻布质量分数超过20%后,成型压力对力学性能的影响无明显的规律.
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