巯基/乙烯基硅氮烷紫外光固化的研究  

Thiol-Vinyl Silizane Polymerized by UV

作　　者：宋家乐[1] 陈立新[1] 王亚洲[1] 王汝敏[1] 张教强[1] 

机构地区：[1]西北工业大学理学院应用化学系空间应用物理与化学教育部重点实验室,陕西西安710072

出　　处：《影像科学与光化学》2008年第3期218-223,共6页Imaging Science and Photochemistry

基　　金：国家自然科学基金(20574056);装备预研基金(9140A12070106HK0338);西北工业大学博士论文创新基金(CX200614)

摘　　要：利用原位红外跟踪技术和光-示差扫描量热技术研究了不同类型多官能巯基化合物与乙烯基硅氮烷的紫外光聚合动力学过程.结果表明,巯基化合物官能度越高,聚合反应速率越高,但最终转化率越低.巯基丙酸酯类化合物比烷基硫醇类化合物更易与乙烯基硅氮烷反应.在较低温度下,反应温度对聚合反应的影响较弱,反应活化能约为2.3kJ/mol,而较高反应温度下反应速率偏离Arrhenius方程.The UV curing kinetics of thiol-vinyl silizane were investigated by in-situ FT-IR and differential photo-scanning calorimetry. Results indicated that, the polymerization rate at peak maximum is promoted and the final unsaturation conversion is decreased with increasing the functional degrees of thiol group, the polymerization rate of alkyl 3-mercaptopropionate-vinyl silizane is greater than that of alkyl thiol-vinyl silizane. The photo-polymerization characteristic is little sensitive to reacting temperature under lower temperature, the apparent activation energy is 2.3 kJ/mol, but in higher temperature the rate of photo-polymerization deviates from Arrhenius equation.

关 键 词：巯基-乙烯基 紫外光固化 原位红外光谱 光-示差扫描量热 

分 类 号：O631.5[理学—高分子化学]