Study on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer

SUN Fang; LI Minglei; XIONG Jun; JIANG Shengling; DU Hongguang

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Study on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer

更新时间：2023-03-30

- Study on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer
- Journal of Radiation Research and Radiation Processing Vol. 27, Issue 3, Pages: 133-138(2009)
- 作者机构：
  
  1.北京化工大学理学院　北京　100029
  2.北京化工大学材料与科学学院　北京　100029
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SUN Fang, LI Minglei, XIONG Jun, et al. Study on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer. [J]. Journal of Radiation Research and Radiation Processing 27(3):133-138(2009)
DOI：

SUN Fang, LI Minglei, XIONG Jun, et al. Study on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer. [J]. Journal of Radiation Research and Radiation Processing 27(3):133-138(2009) DOI：

摘要

采用实时红外法（Real time infrared spectrum，RTIR）详细研究了光引发剂及活性单体对光敏有机硅聚氨酯丙烯酸酯（Polysiloxane urethane acrylate，PSUA）体系的光聚合性能的影响。研究发现，断裂型光引发剂的引发效率要高于夺氢型的光引发剂的引发效率，其中Irgacure 1700引发体系的聚合速率最快。光引发剂最佳用量为0.5%～1%。体系的双键转化率随单体官能度的增加而降低。含单体HEA和IBOA的感光体系的双键转化率最大，基本完全聚合；而含TPGDA和HDDA的体系的双键转化率大约在90%～95%之间；含TMPTA的体系的双键转化率只有80%左右。含不同活性单体体系的双键转化速率的大小顺序为：TPGDA≈HDDA>HEA>TMPTA>IBOA，体系的双键转化率和双键转化速率都随着单体含量的增加而减小。

Abstract

The influence of photoinitiators and monomers on photopolymerization property of photosensitive polysiloxane urethane acrylate oligomer (PSUA) was investigated by real time Infrared spectroscopy (RTIR). The results show that initiating efficiency of cleavage photoinitiators is higher than that of abstraction-hydrogen photoini-tiators and polymerization rate of the PSUA system using Irgacure 1700 as photoinitiator is the highest. The optimum concentration of photoinitiator 1173 has been determined to be 0.5 %~1 %. Double bond conversion of PSUA system decreases with increment of functionality of added monomer. Double bond conversion of PSUA system containing HEA or IBOA is higher than that containing TPGDA or HDDA (90 %~95 %) and former are polymerized almost completely meanwhile the one containing TMPTA only reaches nearly 80 %. Polymerization rate of the PSUA systems containing different monomers increases in the following order: TPGDA≈HDDA>HEA>TMPTA>IBOA. Both of double bond conversion and polymerization rate of PSUA system decrease with increment of monomer concentration.

关键词

光聚合有机硅实时红外光谱

Keywords

PhotopolymerizationSiliconeReal time infrared spectrum (RTIR)

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