LED封装用MQ树脂的制备  

Synthesis of silicone encapsulation materials for LED

作　　者：潘朝群[1] 陈国栋[1] 

机构地区：[1]华南理工大学化学与化工学院,广州510641

出　　处：《化工新型材料》2015年第10期94-97,共4页New Chemical Materials

摘　　要：以正硅酸乙酯(TEOS)、六甲基二硅氧烷(MM)和1,3-二乙烯基-1,1,3,3-四甲基二硅氧烷(MⅵMⅵ)为原料,以盐酸(HCl)为催化剂,乙醇(ETOH)为溶剂,通过脱水缩合反应制备了乙烯基MQ硅树脂。通过讨论盐酸用量、水的用量、乙醇的用量、反应时间和M/Q比等因素对合成MQ硅树脂的影响,确定了最佳合成工艺:投料质量为TEOS40g,MM 5.5g,MⅵMⅵ2.64g,H2O 10.5g,ETOH 7.5g,HCl 2.4g。通过红外色谱,凝胶渗透色谱(GPC)和元素分析等对硅树脂进行了分析。综合分析结果和固化效果得出合成的MQ硅树脂适合用作硅橡胶的补强填料。Vinyl MQ silicone resin was synthesized via the hydrolytic condensation of tetraethyl orthosilicate（TEOS）,hexamethyldisiloxane（MM）,1,3-divinyl-1,1,3,3-tetramethyl-disiloxane.In this reaction,hydrochloric acid was used as catalyst and ethanol as solvent.By investigating the amount of hydrochloric acid,water,ethanol,and the time of reaction,the molar ratio of monomer,a best synthesis process was explored finally.The reactant contents were TEOS 40 g,MM 5.5g,MⅵMⅵ2.64 g,H2O 10.5g,ETOH 7.5g,HCl 2.4g.The structure of resin was analyzed by infrared spectroscopy（IR）,gel permeation chromatography（GPC）and element analysis.This kind of resin can be used as a good reinforcing filler to the silicone rubber.

关 键 词：LED 正硅酸乙酯 MQ树脂 

分 类 号：TQ330.38[化学工程—橡胶工业]