结晶聚合物基纳米复合材料多层次结构及有效性能预测  

MULTILEVEL MODEL AND PREDICTION OF EFFECTIVE PROPERTIES OF CRYSTALLINE POLYMER NANOCOMPOSITES

作　　者：谢桂兰[1] 张平[1] 龚曙光[2] 曹尉南[2] 安小军[2] 

机构地区：[1]湘潭大学基础力学与材料工程研究所,机械工程学院湖南湘潭411105 [2]湘潭大学机械工程学院

出　　处：《高分子材料科学与工程》2005年第4期23-27,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(10372087);湖南省科技厅资助项目(03JZY1002);湖南省自然科学基金资助项目(03JJY3082);湖南省教育厅资助项目(02C588)

摘　　要：根据结晶聚合物基纳米复合材料实验分析,将结晶聚合物基纳米复合材料内部结构分别用宏观、细观和纳观三个层次来描述。利用数学上的渐近均匀化理论,结合有限元方法,经二次纳观层次的均匀化和一次细观层次的均匀化,预测了聚合物基纳米复合材料的有效性能。并用FORTRAN语言编写了计算程序。具体分析了聚合物的结晶度、聚合物结晶相的弹性模量、纳米颗粒的弹性模量和纳米颗粒的体积分数等参数对结晶聚合物基纳米复合材料有效性能的影响,得到了一些有意义的结论,对指导结晶聚合物基纳米复合材料的制备有一定的指导作用。Based on the experiment analysis of crystal polymer nanocomposites, internal structure of crystal polymer nanocomposites was described by multilevels (macroscopic, microscopic and nanoscopic levels). The finite element method was combined with homogenization theory based on asymptotic expansion for predicting effective properties of crystal polymer nanocomposites, double nanoscopic level homogenizations and one microscopic homogenization were used. A computational program was written by FORTRAN language. The effect of crystal degree of polymer, elastic modulus of crystal inclusion, elastic modulus of nanoparticle and volume fraction of nanoparticle on the effective properties of polymer nanocomposite was analyzed. The corresponding conclusions for guiding preparation and application of polymer-matrix composites were gained.

关 键 词：纳米复合材料 结晶聚合物 渐近均匀化方法 有限元分析 多层次结构 有效性能 

分 类 号：TB383[一般工业技术—材料科学与工程]