高折射含钛有机硅杂化涂层材料的制备及性能研究?

功能材料, 2015, (22): 22010-22014. doi: 10.3969/j.issn.1001-9731.2015.22.002

高折射含钛有机硅杂化涂层材料的制备及性能研究?

赖雅文 ^1, , 杭建忠 ^2, , 孙小英 ^3, , 金鹿江 ^4, , 施利毅 ^5, , 孙东博 ^6,

1.上海大学纳米科学与技术研究中心,上海,200444

2.上海大学纳米科学与技术研究中心,上海,200444

3.上海大学纳米科学与技术研究中心,上海,200444

4.上海大学纳米科学与技术研究中心,上海,200444

5.上海大学纳米科学与技术研究中心,上海,200444

6.上海大学纳米科学与技术研究中心,上海,200444

基金项目: 广东省省部产学研结合重大专项资助项目(2012A090300004) 上海市科委纳米专项资助项目(12nm0500300)

关键词：高折射 , 长链烷基硅烷 , 黄变 , 杂化涂层

Preparation and properties of titanium-contained silicone hybrid films with high refractive index

Keywords： high refractive index , long-chain alkyl silane , yellowing , hybrid films

采用钛酸四正丁酯(TBOT)、二苯基二甲氧基硅烷(DPS)为原料，分别与两种不同烷基链长度的硅烷(正己基三甲氧基硅烷(C6 TMS)和十二烷基三甲氧基硅烷(C12 TMS))通过水解缩聚反应，制备了两种含钛有机硅杂化溶胶 BTS 和 CTS.实验研究了TBOT 含量和烷基链长度对涂层热稳定性、耐热老化、折射率、透过率等性能的影响.结果表明，所有涂层在可见光区的透过率均在98％以上；通过调节 Ti 含量， BTS 与 CTS 系列涂层的折射率分别在1．5584~1．6137和1．5721~1．6515内连续可调.热重分析与耐热老化测试结果显示，杂化涂层的热稳定性和耐黄变性能与烷基基团碳链长度成正比，与 Ti 含量成反比.文章还对引起杂化涂层黄变的机理进行了初步探讨.

Tetrabutyl titanate (TBOT)and diphenyldimethoxysilane (DPS)were used to condensate with two kinds of silanes with different alkyl chain length hexyltrimethoxysilane (C6 TMS)and n-Dodecyltrimethoxysi-lane (C1 2 TMS),respectively.Two kinds of titanium-contained silicone hybrid sols series BTS and CTS were synthesized.The effects of Ti content and alkyl chain length on thermal stability against yellowing,refractive index and transmittance of the films were studied.The results indicated that transmittance in visible range of all films was above 98%;refractive indices of the films BTS series and CTS series were tunable between 1.5584-1.6137 and 1.5721-1.65 15,respectively.TGA and thermal aging test indicated that the thermal stability against yellowing of the hybrid films increased with long alkyl chain length and more Ti content.The mechanism of yellowing of Ti-contained materials was also discussed.

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