影像科学与光化学 ›› 2013, Vol. 31 ›› Issue (4): 268-275.DOI: 10.7517/j.issn.1674-0475.2013.04.003

• 研究论文 • 上一篇    下一篇

一类高折射率光固化有机硅树脂的性能研究

王茜1, 李怡俊1, 冯宗财2, 王跃川1   

  1. 1. 四川大学高分子科学与工程学院高分子材料工程国家重点实验室, 四川 成都 610065;
    2. 湛江师范学院化学科学与技术学院, 广东 湛江 524048
  • 收稿日期:2013-01-24 修回日期:2013-05-16 出版日期:2013-07-15 发布日期:2013-07-15
  • 通讯作者: 王跃川,E-mail: wangyc@scu.edu.cn.
  • 作者简介:王 茜(1988- ),女,主要从事光固化有机硅材料的研究
  • 基金资助:

    高分子材料工程国家重点实验室开放课题基金(KF201208).

The Properties of Photo-curable Silicone Resin with High Refractive Index

WANG Xi1, LI Yi-jun1, FENG Zong-cai2, WANG Yue-chuan1   

  1. 1. State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China;
    2. College of Chemistry Science and Technology, Zhanjiang Normal University, Zhanjiang 524048, Guangdong, P. R. China
  • Received:2013-01-24 Revised:2013-05-16 Online:2013-07-15 Published:2013-07-15

摘要:

光固化有机硅材料兼具光固化的高效、能耗低和环保以及有机硅树脂优异的耐温、耐候性和电绝缘性能,因此,在LED等电子器件封装方面受到广泛关注.本文研究了自制的3种含丙烯酸酯基团的光固化苯基有机硅预聚物KDS-10、KMDS-03和KMS-03的光固化特性、光学性能和热稳定性能.结果表明,这些有机硅预聚物的折光指数随苯环含量的增加而增高,苯环含量从22.3%到37.7%,折光指数相应从1.496到1.542;3种预聚物与多种丙烯酸酯相容性好,用双官能的TPGDA作稀释剂,固化反应速率最快,丙烯酸酯基团的转化率也最高;光引发剂TPO引发的光固化反应速率和转化率均最高;高折射率有机硅预聚物KDS-10光固化后的薄膜具有优异的光学性能,在550 nm处的透过率为92.54%;玻璃化转变温度约为-17.41℃,起始分解温度为385℃.

关键词: 有机硅, 预聚物, 光固化, 封装, 器件

Abstract:

Photo-curable silicone materials combine the advantages of photo-curing by high efficient, energy saving and low impact on environment in application with the excellent heat and weather resistance, and electrical insulation properties of silicone materials. In this work, the photocuring behaviors, the optical properties and thermal stability of the cured materials of a series of photo-curable phenyl-silicone prepolymes (KDS-10, KMDS-03, KMS-03) are studied. It has been found that the refractive index increases with the increasing of phenyl units in the silicone prepolymer: when the phenyl content increased from 22.3% to 37.7%, the refractive index of the prepolymer increased from 1.496 of KMS-03 to 1.542 of KDS-10. The silicone prepolymers are well compatible with acrylate diluents. The photo-curing mixture exhibits higher curing rate and vinyl conversion with difunctional TPGDT as the diluents. TPO is the most efficient photoinitator in curing rate and conversion. The photo-cured film prepared by prepolymer KDS-10 shows excellent optical properties with transmittance over 92.54% at 550 nm and excellent thermal stability with the initial thermal degradation temperature of 385℃ with glass transition temperature about-17.4℃.

Key words: silicone, prepolymer, UV-curing, sealing, device

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