改性竹纤维增强聚丙烯复合材料的性能研究  

Study on Properties of Modified Bamboo Fiber Reinforced Polypropylene Composites

作　　者：童晓梅[1] 杨俊娜[1] 强琪[1] 张涛[1] 

机构地区：[1]陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《塑料科技》2013年第3期49-53,共5页Plastics Science and Technology

基　　金：陕西科技大学校自选项目(ZX11-19);陕西科技大学科研启动基金项目(BJ12-06)资助

摘　　要：以聚丙烯为基体材料,不同处理工艺改性的竹纤维为增强材料,采用密炼-注塑工艺制备聚丙烯/竹纤维复合材料。通过红外光谱仪(FTIR)、扫描电子显微镜(SEM)、热重分析仪(TGA)、万能试验机等对复合材料的化学结构、表面形态、热性能、力学性能等进行表征和测试。结果表明:偶联剂与碱处理均可改变竹纤维的表面特性,改善复合材料的界面相容性,其力学性能、热性能均随处理工艺有所改善。当偶联剂KH-550含量为2%时,复合材料有较好的力学性能,其断裂伸长率为14.5%,拉伸强度为30.48 MPa,冲击强度为22.4 kJ/m2。The PP/bamboo fiber composites were prepared by mixing-injection molding process with bamboo fiber as reinforced material. The surface morphology, thermal properties and chemical structure of the composites were tested and characterized by scanning electron microscopy （SEM）, thermal gravimetric analysis （TGA） and infrared spectrometer （FTIR）. The results show that： the mechanical properties and thermal properties of composites are improved with bamboo fiber modified by alkali and coupling agent. The interfacial compatibility of composites improves and the interface bonding force increase with the adding of coupling agent. The mechanical properties of composites are better with coupling agent KH-550 2%. The break elongation is 14.5%, tensile strength is 30.48 MPa and the impact strength is 22.4 kJ/m2o

关 键 词：聚丙烯 竹纤维 偶联剂 碱处理 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]