等规聚丙烯微注塑制品的力学性能  

Mechanical Properties of Micro Injection Molded Isotactic Polypropylene Parts

作　　者：张建波[1] 王利霞[1,2] 王心超[2] 刘晓东[2] 蒋林[2] 卞宁[2] 张扬[1] 李倩[1,2] 

机构地区：[1]郑州大学力学与工程科学学院,河南郑州450001 [2]郑州大学橡塑模具国家工程研究中心,河南郑州450002

出　　处：《高分子材料科学与工程》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)

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.

关 键 词：微注塑制品 力学性能 工艺参数 正交实验 尺度效应 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]