回收塑料木纤维复合材料工艺及性能研究.pdfVIP

_______________________________________________________________________________ 回收塑料/木纤维复合材料工艺及性能研究 正1 赵行志2 郭文静1 ( 1 中国林科院木材工业研究所, 北京 100091) (2 北京林业大学材料学院 北京100083 ) 摘要：该文利用回收聚苯乙烯塑料、回收聚乙烯塑料和回收聚丙烯塑料等三种回收塑料与木纤维复合制备复合材料，研究分 析不 回收塑料种类、木纤维与塑料不 重量比和热压温度等工艺条件对复合材料物理力学性能的影响.结果表明：三种回 收塑料中回收聚苯乙烯塑料性能最好，回收聚丙烯塑料其次，回收聚乙烯塑料最差；木/塑重量比50/50 效果最好,塑料含量 低时，内结合强度和拉伸强度低，吸水厚度膨胀率高，塑料含量过高时，静曲强度和弹性模量降低；热压温度在190℃效果 最好，温度过低时，静曲强度、弹性模量、拉伸强度和内结合强度较差；温度过高时，木纤维降解加剧，塑料少量溢出，性 能反而有所下降。通过极差和方差分析知，本研究的最佳工艺条件为：采用回收聚苯乙烯、木/塑比50/50、热压温度190℃。 关键词： 回收木/塑复合材料, 木/塑比， 尺寸稳定性，工艺因子 中图分类号： 文献标识码： 文章编号： Primary Study on Process Factors and Performances of Recycled Plastics/ Wood Fiber Composites 1 2 1 Wang Zheng Zhao Xingzhi Guo Wenj ing ( 1 Research Institute of Wood Industry, CAF, Beijing 100091) (2 Material College of Beijing Forestry University, Beijing 100083) Abstract: The influence of the process factors on the recycled wood/plastic composites panels’physical was studied in this paper. Three recycled plastics (polystyrene, polyethylene, and polypropylene) and polar (Pop ulus sp . ) fiber were used as main raw materials, and the various process factors ,such as different kinds of plastics, the mixing ratio between the wood material and plastics counterpart, hot-pressing temperature were examined. The results showed that properties sequence of three plastics is polystyrene, polypropylene, polyethylene and among them p