摘要
采用稳健设计方法，以发光二极管（LED）非球面透镜折射率变化为实验目标，以压缩距离、压缩速度、压缩力、保压压力、熔体温度、冷却时间、注射速率为影响因素，设计了L27（3^7）正交试验矩阵，并对透镜的注射压缩成型过程采用Moldflow2015软件模拟分析。结果表明，最优工艺参数组合为A381C2D3E3F2G2；熔体温度对透镜折射率的影响最大，注射速率次之，压缩距离、冷却时间、保压压力影响较小，压缩速度、压缩力影响最小；优化后采用更高的熔体温度和较快的注射速率，有利于减小透镜的体积收缩，改善透镜内部残余应力，折射率变化减小了45％，翘曲变形量减小了4．3％。
Using steady experimental design method, refractive index variation of LED aspheric lens as the objective, compression distance, compression speed, compression force, holding pressure, melting temperature, cooling time, and injection rate as the influence factors, an L27 （37） orthogonal experimental was carried out. Injection compression molding process for lens was simulated using Moldflow 2015 software, and the optimum process parameter A3B1C2D3E3F2G2 was obtained. It showed that the influence factors on refractive index of lens from high to low were melting temperature, injection rate, compression distance, cooling time, holding pressure, and compression speed, compression force. High melting temperature and injection rate could reduce volume shrinkage and improve interior residual stress, in which refractive index variation reduced 45 %and warpage deformation decreased 4. 3 %. Therefore, optical performance and processing quality of LED aspheric lens were improved.
出处
《中国塑料》
CAS
CSCD
北大核心
2016年第3期78-83,共6页
China Plastics
基金
广东省省部产学研结合项目(2013B090600066
2013B090600123)
关键词
发光二极管
非球面透镜
注射压缩成型
稳健设计
light-emitting diode
aspheric leninjection compression molding
steady experimental design
