相容剂对PP/木粉复合材料力学性能的影响  

Effects of Compatibility Agents on Mechanical Properties of PP/Wood Powder Composites

作　　者：曹金星[1] 张玲[1] 张云灿[1] 傅伟宁[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《现代塑料加工应用》2017年第2期47-50,共4页Modern Plastics Processing and Applications

基　　金：江苏省高校优势学科建设工程项目(PAPD)资助

摘　　要：通过亚临界流体辅助反应挤出技术制备了木塑复合材料,对相容剂的种类及用量进行了筛选,同时对聚丙烯(PP)/木粉复合材料的组分进行了优化,并对PP/木粉复合材料进行了扫描电子显微镜(SEM)和傅里叶转换红外光谱分析(FTIR)。结果表明:在亚临界乙醇作用下,添加质量分数10%的马来酸酐接枝PP的PP/木粉复合材料综合力学性能最佳,PP与木粉间结合较好。在乙醇中加入质量分数2%硅烷偶联剂(KH550)时,PP/木粉复合材料力学性能进一步提高,其拉伸强度、弯曲强度、弯曲模量、冲击强度分别达到44.32 MPa,88.44 MPa,6 579.36 MPa和7.12kJ/m2。The wood plastic composites were prepared by subcritical fluid assisted reactive extrusion, and the types and amounts of compatibilizers were screened. At the same time, the composition of polypropylene（PP）/wood flour composites was optimized. PP/wood flour composites were characterized by SEM and FTIR. The results show that the mechanical properties of PP/wood flour composites with 10% maleic anhydride grafted polypropylene are best under subcritical ethanol, which leads to a better interracial adhesion between PP and wood flour. When 2% silane coupling agent（KH550）is added into ethanol, the mechanical properties of PP/wood powder composites increase dramatically, whose tensile strength, flexural strength, flexural modulus and notched impact strength reach 44.32 MPa, 88.44 MPa, 6 579.36 MPa and 7.12 kJ/m%2,respectively.

关 键 词：聚丙烯 木粉 相容剂 复合材料 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.14[化学工程—合成树脂塑料工业]