化工学报2019，Vol.70Issue(7)：2503-2511,9.DOI:10.11949/0438-1157.20190171
注塑成型光学制品折射率分层模拟与实验研究
Layered simulation in thickness direction and experimental study on refractive index of injection molded optical products
摘要
Abstract
Compared with glass-made optical products, polymer injection optical products have the advantages of light weight, easy processing, good impact resistance, and are widely used in high-end fields such as aerospace and precision lenses. However, due to the coupling effect of complex thermal fields and pressure fields in the forming process, injection molded transparent products usually have optical defects such as uneven refractive index distribution, angular deviation, optical distortion and so on. Therefore, the simulation and experimental investigation on the effect of injection molding process on the refractive behavior is of great guiding significance for the manufacture of transparent products with controllable refractive index. In this paper, the layered computational model for the refractive behavior in thickness direction of injection molded optical products was built based on the Hele Shaw injection molding theory and Lorentz Lorenz equation characterizing density and refractive index. The corresponding simulation program with VC++ was developed, and then was merged into the software system Z- Mold, a self-developed injection mould simulation software. Furthermore, the coupling analysis of injection molding filling, packing, cooling and refractive index distribution was successfully implemented based on Z-Mold. Taking the polycarbonate transparent square plate as an example, its refractive index distribution in thickness and flow direction was predicted and analyzed. According to Brewster′s law, the refractive index values of square plate at different position were measured. The simulation results were in good agreement with the measured data, which proved that the prediction model for refractive index had high accuracy. This method had been successfully applied to the analysis of the "Shenzhou" extravehicular spacesuits mask.关键词
折射率/预测/光学制品/注塑成型/数值模拟/聚合物加工Key words
refractive index/prediction/optical products/injection molding/numerical simulation/polymers processing分类
化学化工引用本文复制引用
HUANG Ming,KANG Junyang,WU Xinzhe,SHI Xianzhang,LIU Yongzhi,CAO Wei,LIU Chuntai..注塑成型光学制品折射率分层模拟与实验研究[J].化工学报,2019,70(7):2503-2511,9.基金项目
大连理工大学工业装备结构分析国家重点实验室开放基金项目(GZ18203) （GZ18203）
河南省自然科学基金项目(162300410246, 182300410272) （162300410246, 182300410272）
河南省科技攻关项目(182102210008) （182102210008）
