LED灌封用高折光指数有机硅树脂的制备与性能

发布时间：2018-01-12 07:14

本文关键词：LED灌封用高折光指数有机硅树脂的制备与性能　出处：《化工进展》2017年02期 　论文类型：期刊论文

【摘要】：以不同二官能度和三官能度的有机烷氧基硅烷作为单体,采用无溶剂法脱水缩合共聚得到高折光指数的苯基乙烯基有机硅树脂,通过含氢硅油交联剂硅氢加成固化有机硅树脂得到灌封材料。采用红外光谱、核磁共振、热重分析、紫外光谱、硬度仪、万能拉力机等方法对有机硅树脂和固化灌封材料进行表征,考察了不同因素对合成的影响,提出了封端剂后加入的工艺并对其加入时间进行了探究,最后研究了固化灌封材料的光学和力学性能,结果表明:用无溶剂法制备有机硅树脂,合适的催化剂、加水量、反应温度才能保证产物的透明性;封端剂的加入时间在1~1.5h内所得产物分子量和分子量分布最为适宜;探讨随苯基含量的增加,材料的折光指数呈线性的增加,且苯基质量分数为30%~40%时,所得固化产物力学性能最佳。
[Abstract]:Phenyl vinyl silicone resin with high refractive index was synthesized by dehydration condensation copolymerization of organoalkoxy silane with different difunctional and trifunctional degrees. The encapsulation material was obtained by hydro-silicone oil crosslinking agent, hydrosilyl addition curing organic silicone resin. Infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis, UV spectrum and hardness tester were used. The organic silicone resin and the solidified filling material were characterized by universal tensile force machine. The effects of different factors on the synthesis were investigated. The process of adding the capping agent and the adding time were discussed. Finally, the optical and mechanical properties of the solidified filling material were studied. The results showed that the transparency of the product could be ensured by preparing silicone resin by solvent-free method, proper catalyst, water content and reaction temperature. The molecular weight and molecular weight distribution of the product are most suitable when the entrapment time is 1 ~ 1.5 h. It is discussed that the refractive index increases linearly with the increase of phenyl content, and the mechanical properties of the cured products are the best when the mass fraction of phenyl is 30 ~ 40.
【作者单位】：江门职业技术学院;华南理工大学材料科学与工程学院;
【基金】：江门市社会公益创新平台建设项目(江财工[2016]143号)
【分类号】：TQ324.21;TM923.34
【正文快照】： 作为第四代照明光源,未来世界的核心照明光源将由LED灯来担当,尤其是高功率LED灯正逐步取代白炽灯、荧光灯和霓虹灯,被越来越广泛地使用[1-3]。封装技术是LED灯实际应用的关键技术,封装工艺中所使用灌封材料的性能严重影响LED灯的亮度、外观以及寿命。与普通LED灯的传统灌封材

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