LED照明用光扩散PC的制备  

Preparation of light diffusing polycarbonate used in LED illumination

作　　者：欧阳星[1] 陈大柱[1] 汤皎宁[1] 

机构地区：[1]深圳大学材料学院高分子材料与工程系深圳市特种功能材料重点实验室,广东省深圳市518060

出　　处：《合成树脂及塑料》2012年第4期21-24,29,共5页China Synthetic Resin and Plastics

基　　金：广东省科技计划项目(2011B010400013);深圳市模具先进制造技术重点实验室基金(MKL09009)

摘　　要：光扩散聚碳酸酯（PC）用于发光二极管照明能显著改善照明效果。采用丙烯酸类和有机硅类光扩散粒子制备了两种光扩散PC材料。通过扫描电子显微镜观察、透光率测试和热性能分析等研究了PC材料的分散性和光扩散性能。结果表明：雾度为91.4%时,丙烯酸类光扩散PC材料的透光率较有机硅类高,达到81.3%,但添加光扩散粒子份数更大（2~5 phr）;有机硅类光扩散PC材料能保持PC的冲击强度和良好的加工热稳定性能。Using light diffusing polycarbonate（PC） in light-emitting diode（LED） illumination could improve lighting efficiency remarkably.Two kinds of light diffusing PC materials were prepared with acrylic and silica as light diffusing agents.The dispersing and light diffusing properties of the PC materials were studied by scanning electron microscopy（SEM）,transmittance test and thermal analysis.The results show that when the materials′haze is 91.4%,the acrylic light diffusing PC material has transmittance of 81.3%,higher than the silica light diffusing PC material,though more quantity of light diffusing agent（2-5 phr） is needed.As a contrast,the silica light diffusing PC material can retain both the high impact strength and good thermal stability in processing the pure PC originally possesses.

关 键 词：聚碳酸酯 发光二极管照明 光扩散 透光率 雾度 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]