采用双辊开炼机将芦苇纤维( LF)、碳纤维( CF)与聚丙烯( PP)、聚醋酸乙烯酯( EVA)进行熔融共混,制备了PP/EVA/LF/CF复合材料,以及LF经碱处理、CF经硫酸/硅烷偶联剂处理后,制备了PP/EVA/改性芦苇纤维( ALF)/改性碳纤维( SSiCF)复合材料,研究了2种纤维复配质量比对复合材料力学性能的影响,探讨了复配改性纤维对复合材料接触角、热稳定性的影响。结果表明：当LF与CF复配质量比为1：5时, PP/EVA/LF/CF复合材料的综合力学性能较好；与PP/EVA复合材料相比,ALF与SSiCF复配质量比为1：5时, PP/EVA/ALF/SSiCF的拉伸强度提高了11.13 MPa,弯曲强度提高了16.31MPa,冲击强度降低；PP/EVA/ALF/SSiCF复合材料较PP/EVA复合材料的表面亲水接触角提高了7°,残炭率由0增加至23.1%,热稳定性明显提高。%A polypropylene/ethylene-vinyl acetate copolymer/reed fiber/carbon fiber ( PP/EVA/LF/CF) composite was pre-pared by melt blending LF, CF, PP and EVA in a double roller mixer. And a PP/EVA/modified reed fiber ( ALF)/modified carbon fiber ( SSiCF) composite was prepared by treating LF with alkali solution and CF with sulfuric acid/silane coupling agent. The effect of the mass ratio of two kinds of fibers on the mechanical properties of the composite was prepared. The effect of the compounding modified fiber on the contact angle and thermal stability of the composite was investigated. The results showed that the PP/EVA/LF/CF composite exhibited the fairly good comprehensive mechanical properties as the mass ratio of LF and CF was 1:5; as compared with PP/EVA composite, PP/EVA/ALF/SSiCF composite had an increase of 11. 13 MPa in the tensile strength and 16. 31 MPa in the bending strength, but a decrease in the impact strength as the mass ratio of ALF and SSiCF was 1:5;meanwhile, the surface water contact angle was increased by 7°, the carbon residue was increased from 0 and 23. 1%, and the thermal stability was obviously improved.
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