摘要
采用等规聚丙烯材料,选取弹性模量和屈服强度作为微制品力学性能的指标,基于正交实验设计进行微注塑成型实验以成型微拉伸试样,采用直观分析、信噪比分析及方差分析对微试样的拉伸实验结果进行分析,研究工艺参数对厚度1.0 mm,0.5 mm和0.2 mm的微注塑制品力学性能的影响规律及重要性,并分析尺度效应对微制品力学性能的影响。实验结果表明,不同尺度下,各个工艺参数对微制品力学性能的影响规律和重要性均不同,且随着尺寸的减小,微注塑制品的拉伸屈服强度增大,弹性模量增大。
The micro injection molding experiments were conducted based on design of experiments(DOE) method to mold the micro tensile specimens,and the elastic modulus,yield strength of the micro injection molded isotactic polypropylene parts were chosen as the mechanical property indexes. The influence of process parameters on the mechanical properties of the microparts with the thickness of 1. 0 mm,0. 5 mm and 0. 2 mm was analyzed based on the experiments results by intuitive analysis,signal to noise ratio analysis and variance analysis method,and the influence laws and significance of process parameters on the mechanical properties were obtained. The scale effect on the mechanical properties of the microparts was also investigated. The experimental results indicate that the influence rules and significance of the process parameters are different under different scale,and the yield strength and the modulus of the micro injection molded parts both increase with the scale decreasing.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2015年第2期124-129,共6页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(11372287)
国家基础研究项目(2012CB626809)
关键词
微注塑制品
力学性能
工艺参数
正交实验
尺度效应
micro injection molded parts
mechanical property
process parameter
design of experiments
scale effect
