典型文献
Shape Accuracy and Residual Stress Distribution of Nano-molded Semicrystalline Polymer:A Simulation Study
文献摘要：
The shape accuracy and residual stress distribution of a nano-molded semicrystalline polymer are studied by molecular dynamics simulations.Semicrystalline polyethylene flakes are obtained by continuous cooling inside templates with four shapes.We find that the curvature of contour curve near template corners decreases with corner angle.A simple 2D shape model of minimum surface energy is proposed to understand the shapes for repulsive and attractive templates.The confinement of template induces highly ordered chain packing in surface region.According to the spacial distribution of local stress,we find the contracting stress caused by volume shrinkage during cooling concentrates on the chains perpendicular to the direction of relative stress principal.The distribution of von Mises stress indicates the outer layer of semicrystalline polymer flake has lower distortion.Our results provide a theoretical insight for better nano-molding techniques.
文献关键词：
中图分类号：
作者姓名：
Dan Xu;Yu-Yuan Lu;Chuan-Fu Luo
作者机构：
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;University of Science and Technology of China,School of Applied Chemistry and Engineering,Hefei230026,China
文献出处：
引用格式：
[1]Dan Xu;Yu-Yuan Lu;Chuan-Fu Luo-.Shape Accuracy and Residual Stress Distribution of Nano-molded Semicrystalline Polymer:A Simulation Study)[J].高分子科学（英文版）,2022(06):642-650
A类：
Semicrystalline,semicrystalline
B类：
Shape,Accuracy,Residual,Stress,Distribution,Nano,molded,Polymer,Simulation,Study,accuracy,residual,stress,distribution,nano,polymer,are,studied,by,molecular,dynamics,simulations,polyethylene,flakes,obtained,continuous,cooling,inside,templates,four,shapes,We,find,that,curvature,contour,curve,near,corners,decreases,angle,simple,2D,model,minimum,surface,energy,proposed,understand,repulsive,attractive,confinement,induces,highly,ordered,packing,region,According,spacial,local,contracting,caused,volume,shrinkage,during,concentrates,chains,perpendicular,direction,relative,principal,von,Mises,indicates,outer,layer,has,lower,distortion,Our,results,provide,theoretical,insight,better,molding,techniques
AB值：
0.653474
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
