计算机系统模拟粒子散射调控复合发光塑料  

Computer system simulation of particle scattering and control of composite luminescent plastics

作　　者：吴晶晶[1] 黄静[2] 李平华 WU Jing-jing;HUANG Jing;LI Ping-hua(Hebei Vocational College For Correctional Police,Handan 056004,Hebei Province,China;College of Intelligence and Computing,Tianjin University,Tianjin 300350,China;Sinopec Shijiazhuang Refining and Chemical Company,Shijiazhuang 050000,Hebei Province,China)

机构地区：[1]河北司法警官职业学院,河北邯郸056000 [2]天津大学智能与计算学部,天津300350 [3]中国石化石家庄炼化分公司,河北石家庄050000

出　　处：《化学工程》2021年第12期75-78,共4页Chemical Engineering(China)

基　　金：天津大学自主创新基金(2020XY-0027)。

摘　　要：无机粒子基于其散射特性可以用来调控复合发光塑料和对应LED光源的光色性能,文中采用计算机模拟系统,结合蒙特卡洛数值计算方法和米氏散射理论,研究了光色性能的变化趋势并进行了机理解释。研究结果表明:随着粒径增加,粒子前向散射强度逐渐升高,主要强度积聚于±25°范围内;而散射系数则由于粒子数的减少而逐渐降低,光子散射平均自由程则由于粒子间距增加而逐渐增加;发光塑料的发射光谱强度先升高后降低,发射峰值在557 nm处;所模拟的LED光源,粒子的掺入可有效调控色温从蓝光过高的7027 K调节至正白色光6400 K左右,而光通量则在粒径为5μm时存在最优值115.9 lm,相较于未掺杂提高了12.85%。上述研究表明,无机粒子掺杂并运用其散射效应可有效地调控发光塑料和LED光源的光色性能,对于实际的应用具有参考价值。Based their scattering properties,inorganic particles can be used to control the light and color properties of composite luminescent plastics and corresponding LED light sources.Combined with Monte Carlo numerical calculation methods and Mie scattering theory,the computer simulation system was used to study the changing trend of light and color properties,and then the mechanism was explained.The research results showed that as the particle size increases,the forward scattering intensity of the particles gradually increases,and the main intensity accumulates in the range of±25°;the particle scattering coefficient gradually decreased due to the decreasing of particle numbers;the mean free path gradually increased due to the increasing of particle spacing;the emission intensity of luminescent plastic first increases and then decreases,with the emission peak at 557 nm.To the simulated LED light source,the incorporation of inorganic particles can effectively adjust the color temperature from 7027 K to about 6400 K.The luminous flux had an optimal value of 115.9 lm when the particle size was 5μm,which was an increase of 12.85%compared to the undoped light source.The above show that doping with inorganic particles and using their scattering effect can effectively control the light and color properties of luminescent plastics and LED light sources,which has reference value for practical applications.

关 键 词：计算机模拟系统 无机粒子 复合发光塑料 光通量 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TN312.8[自动化与计算机技术—计算机科学与技术]