摘要
以γ-(甲基丙烯酰氧)丙基三甲氧基硅烷、六甲基硅氧烷、正硅酸乙酯等为原料,在酸性条件下,通过水解缩合制得无色、无味、透明、可紫外光固化的液态MTQ硅树脂.控制T/Q的量之比为1/3,考察了不同M/T+Q值、水解时间、缩合时间对产物性能的影响,通过红外光谱、核磁共振、热重分析、紫外分光光度计及拉伸测试等对其进行表征.结果表明,当M/T+Q=1,水解时间为50 min,缩合时间为7 h时,硅树脂有较高的转化率、良好的耐热性及透光率.此外,制备的液态MTQ硅树脂光固化后,具有较高的拉伸强度及硬度.
The UV-curable MTQ silicone resins was synthesized by hydrolysis copolymerization under acidic conditions with hexamethyldisiloxane,γ-( methacryloyloxy) propyltrimethoxy-silane and tetraethyl orthosilicate as the raw materials. The obtained resin was characterized by IR,NMR,thermogravimetric analysis and UV-Vis spectroscopy. The M/T+Q values are used to discuss the structure of silicone. When the molar ratio of T chain unit to Q chain unit( T/Q) is controlled as 1 ∶3,the effects of different M/T + Q values hydrolysis time and condensation time on the product were investigated. It is found that with M/T+Q value of1,hydrolyzed for 50 min and condensed for 7 h,the MTQ silicone resin has a higher conversion rate,good heat resistance and light transmittance. Moreover,the prepared MTQ silicone resin has high tensile strength and hardness after photo-curing.
作者
黄梓英
刘珠
洪鹏
罗青宏
陈玉镔
刘晓暄
向洪平
HUANG Zi-ying;LIU Zhu;HONG Peng;LUO Qing-hong;CHEN Yu-bin;LIU Xiao-xuan;XIANG Hong-ping(Key Laboratory of Functional Soft Condensed Matter,Guangdong Province,College of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,Guangdong)
出处
《有机硅材料》
CAS
2019年第6期427-434,共8页
Silicone Material
基金
国家自然科学基金项目(51873043,21604014)
大学生创新创业计划项目(gj201811845029,xj201911845359)
关键词
液态MTQ硅树脂
水解缩合
光固化
高透光率
liquid MTQ silicone resin
hydrolysis condensation
photo-curing
high transmittance
