UV光固化有机硅的制备及其光固化条件的研究

Synthesis of UV Curable Organosilicon and The Curing conditions Research

摘要:

以聚甲基三乙氧基硅烷、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)、二甲基二乙氧基硅烷为原料，以HCl为催化剂通过溶胶凝胶法制备了可UV光固化的有机硅材料，利用FTIR和29Si-NMR对材料进行了表征，研究了可UV光固化有机硅材料的缩聚程度和光引发剂种类对可UV光固化的有机硅材料固化速率的影响，其中光引发剂369的固化速率最快，在相同的光照时间和引发剂质量浓度下，双键转化率达到了95.89%，同时通过改变光照时间和引发剂浓度来研究固化速率确定了最佳的光照时间和最佳引发剂质量浓度。

Abstract:

The Ultraviolet (UV)-curable organosilicon material has been synthesized by sol-gel method using polymethyl triethoxy silane(PTS), γ-methacryloyl propyl trimethoxyl silane (KH570), dimethyldiethoxysilane(DDS) as a raw material and HCl as catalyst. The obtained materials were characterized by means of FT-IR, 29Si-NMR, and studied the degree of siloxane condensation of organosilicon and the conversation rate of C=C double bonds after UV curing. The results showed that the UV-curing system composed of Irgacure369 has higher curing rate than that with other photoinitiators, The conversation rate of C=C double bonds of organosilicon has reached 95.89% after UV-cured with Irgacure369. When the concentration of the photoinitiator is 2% and the illumination time is 15s, the best result can be obtained.