纳米Al_2O_3增强木塑复合材料的制备与性能分析  

Preparation and property analysis on nano-Al_2O_3 reinforced WPC

作　　者：袁光明[1,2] 张威 赵可欣 肖罗喜 谭林朋 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]"木竹资源高效利用"湖南省高校2011协同创新中心,湖南长沙410018

出　　处：《中南林业科技大学学报》2017年第10期118-123,共6页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项经费项目(201504503);中南林业科技大学大学生研究性学习和创新性实验项目

摘　　要：木质纤维经预处理后,添加KH550分散改性后的纳米Al_2O_3粒子,再与PVC与DOP等组分挤捏后的混合物一起混炼造粒,热压成型制得试样。测试试样力学性能后,对其进行FTIR,SEM,TG分析表征。结果表明:KH550成功接枝到纳米Al_2O_3粒子上;纳米Al_2O_3改善了木质纤维与PVC的界面结合,提高了复合材的力学性能和热稳定性。当纳米Al_2O_3粒子质量分数达7%时,含DOP40%的试样拉伸强度为5.6 MPa,比未添加纳米粒子的提高74%,断裂拉伸率为12.8%,提高10%;磨耗量为0.14 g,耐磨性提高30%;而含DOP80%的试样拉伸强度为3.2 MPa,比未添加纳米粒子的提高57%,断裂拉伸率为215.9%,提高124%;磨耗量为0.15 g,耐磨性能提高80%。The nano-Al2O3 modified and dispersed by KH550 joined into the pretreated wood fiber, then mixing with DOP and PVC etc., with PVC, then wood plastic composites were made out by hot press molding way, then characterized by FTIR, SEM and TG. The result show that KH550 was successfully grafted, and that the compatibility of composites in the blend system was enhanced with adding nano-Al2O3 and the inteffacial adhesion between wood fiber and PVC was also improved, thus the mechanical property was also improved. When 7% mass fraction of nano-Al2O3 adding, the improvement of mechanical properties was the largest to the composites, the tensile strength and elongation at break of DOP 40% sample was 5.6 MPa and 12.8% respectively increased by 74% and 10%; face abrading quantity was 0.14 g increased by 30%; the tensile strength and elongation at break of DOP 80% sample was 3.2 MPa and 215.9%, respectively increased by 57% and 124%; face abrading quantity was 0.15 g, increased by 80%.

关 键 词：纳米AL2O3 PVC 木质纤维 复合材料 力学性能 

分 类 号：S784[农业科学—林学]