木粉预处理对PP木塑复合料性能影响  

Influence of Wood Flour Pretreatment on Properties of PP Wood Plastic Composite Materials

作　　者：郝智[1] 尹宏[2] 伍玉娇[1] 熊玉竹[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]贵州大学机械工程学院,贵州贵阳550003

出　　处：《现代塑料加工应用》2012年第5期24-27,共4页Modern Plastics Processing and Applications

基　　金：贵阳市科技局工业攻关项目[筑科工合同字(2009)第1-050号]资助

摘　　要：采用熔融共混法制备了聚丙烯(PP)木塑复合材料(WPC),研究了木粉含量及预处理方式对WPC力学性能、吸水性能的影响。结果表明:随着木粉含量的增大,WPC的弯曲强度和弯曲模量明显上升,拉伸强度有所降低,而冲击强度基本保持不变。木粉经过化学预处理对WPC力学性能的改善比物理预处理要好。从吸水率来看,随着木粉含量的增大,WPC吸水率保持在0.22%以下,远低于纯木材。Polypropylene（PP） wood plastic composite materials（WPC） was prepared by melt blending . The influence of wood flour content and pretreatment on the mechan- ical properties and water absorption properties of wood plastic composites was studied. The results show that with the increase of the wood flour content, the flexural strength and flexural modulus of wood plastic composite materials increase obviously. The tensile str ca ca of ength decreases and the impact strength remains. The effect of wood flour by chemi- pretreatment on the mechanical properties of the composites is better than by physi- pretreatment. With the increase of the wood flour content, the water absorbing rate wood plastic composite remains below 0.22%, far lower than that of the pure wood.

关 键 词：聚丙烯 木粉 预处理 力学性能 吸水性能 

分 类 号：TQ321.5[化学工程—合成树脂塑料工业]