【摘要】 采用原位聚合法制备了聚乳酸-聚已内酯(PLA-PCL)／苎麻复合材料。研究了硅烷偶联剂(KH550)预处理、纤维含量以及成型工艺对PLA-PCL／苎麻复合材料力学性能的影响。结果表明,经KH550处理后,复合材料的力学性能有不同程度的提高,拉伸强度由49．84MPa到68．95MPa,弯曲强度由34．84MPa提高到65．06MPa,冲击强度由30．13 J／m~2提高到53．54 J／m~2；。在纤维的质量分数为45％,成型温度为170℃,复合材料具有最优性能；采用原位聚合法制备PLA-PCL／苎麻复合材料,复合材料的界面性能较好。更多还原

【Abstract】 PLA-PCL/ramie fabric composite was prepared by means of in-situ polymerization.The effects of the pretreatment of ramie fabric with silane coupling agent,the content of the fiber and molding conditions on the mechanical properties of PLA-PCL/ramie fabric laminate were studied.The results showed after the treatment by the coupling agent KH550,the mechanical properties of the composite were improved to a certain extent,among which tensile strength increased from 49.84 MPa to 68.95 MPa,bending strength increased from 34.84 MPa to 65.06 MPa,impact strength increased from 30.13 J/m~2 to 53.54 J/m~2;when the mass fraction of the fabric was 45% and molded at 170℃,the mechanical properties of the composite were the best,and the composite prepared by means of in-situ polymerization had better interfacial property.更多还原