偶联处理对聚乳酸/木粉复合材料性能的影响  

Effect of Coupling Agent on Properties of Poly(latic acid)/Wood Flour Composites

作　　者：张明明[1] 储富祥[2] 王春鹏[1,2] 金立维[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局林产化学工程重点开放性实验室,江苏省生物质能源与材料重点实验室,南京210042 [2]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《工程塑料应用》2012年第11期4-7,共4页Engineering Plastics Application

基　　金：国家科技支撑"十二五"计划项目(2012BAD32B03);国家级林业科技成果推广项目([2012]19号)

摘　　要：采用熔融挤出工艺制备了聚乳酸(PLA)/木粉(WF)复合材料。考察了木粉含量及硅烷偶联剂对材料力学性能的影响,并通过接触角测量、热重分析和扫描电子显微镜观察等对材料的性能及微观形貌进行了表征。结果表明,随着WF含量的升高,复合材料的拉伸强度逐步降低,弯曲强度出现峰值。硅烷偶联剂提高了PLA与WF的界面结合力,改善了复合材料的力学性能。Poly （ latic acid ） （ PLA ） / wood flour （ WF ） composites were prepared by melting extrusion process. Effects of WF and silane coupling agent on mechanical properties of the composits were investigated. Properties and morphology of the composites were studied by the measurement of contact angle, thermogravimetric analysis and scanning electron microscope and so on. The research showed that with the increase of contents of WF, the tensile strength decreased and the flexural strength had a maximum value. The silanc coupling agent could enhance the interaction between PLA and WF. The mechanical properties of composites were improved by adding the silane coupling agent.

关 键 词：木粉 聚乳酸 硅烷偶联剂 熔融挤出 复合材料 

分 类 号：TQ322[化学工程—合成树脂塑料工业]