[1]闵雅兰,侯平安,刘艺帆,等.紫外光固化含硫密封剂的制备及性能[J].合成橡胶工业,2023,2:94-99.
MIN Ya-lan,HOU Ping-an,LIU Yi-fan,et al.Preparation and properties of ultraviolet curing sulfur containing sealant[J].China synthetic rubber industy,2023,2:94-99.
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紫外光固化含硫密封剂的制备及性能
MIN Ya-lan,HOU Ping-an,LIU Yi-fan,et al.Preparation and properties of ultraviolet curing sulfur containing sealant[J].China synthetic rubber industy,2023,2:94-99.
《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]
- 期数:
- 2023年2期
- 页码:
- 94-99
- 栏目:
- 实验
- 出版日期:
- 2023-03-15
文章信息/Info
- Title:
- Preparation and properties of ultraviolet curing sulfur containing sealant
- 文章编号:
- 1000-1255（2023）02-0094-06
- Author(s):
- MIN Ya-lan1; HOU Ping-an1; LIU Yi-fan2; ZHANG Jian-zheng2
- 1. VIC Chengdu Aircraft Industrial (Group) Co Ltd, Chengdu 610061, China; 2. AECC Beijing Institue of Aeronautical Materials, Beijing 100095,China
- Keywords:
- liquid polythioether rubber; ultraviolet curing; sulfur containing sealant; photoinitiator; curing agent; mechanical property
- 分类号:
- TQ 436+.6
- DOI:
- DOI:10.19908/j.cnki.ISSN1000-1255.2023.02.0094
- 文献标识码:
- A
- 摘要:
- 以聚硫代醚橡胶为基础胶，利用Thiol-ene点击反应制备了紫外光固化含硫密封剂。考察了光引发剂种类和用量以及烯烃种类、多元硫醇种类等对硫化后密封剂力学性能、热分解温度、玻璃化转变温度的影响。结果表明，相比于光引发剂184，光引发剂1173的固化效果更好，固化后的密封剂热稳定性更佳，且随着光引发剂用量的增加，密封剂的力学性能和热稳定性均下降，光引发剂1173的用量宜为0.03份（质量，下同）。采用三丙二醇二丙烯酸酯（TPGDA）作为固化剂固化的聚硫代醚密封剂力学性能较好，而且随着TPGDA用量的增加，密封剂的力学性能和热稳定性均上升，TPGDA的用量宜为1.00份。多官能度硫醇的加入可提高密封剂的交联度及玻璃化转变温度。
- Abstract:
- The Thiol-ene click reaction was used to prepare photoinitiated radical curing sealants based on polythioether rubber. The effect of types and amount of photoinitiators in the curing system, as well as the types of olefins and polythiols on the mechanical properties of the sealant after vulcanization, temperature of thermal decomposition, and glass transition temperature were studied. The results showed that compared with photoinitiator 184, the cu-ring effect and thermal stability of the cured sealant were better when using photoinitiator 1173, and the mechanical properties and thermal stability of the sealant decreased with increasing amount of photoinitiator. And the appropriate amount of photoinitiator 1173 was 0.03 phr（mass, the same below）. The mechanical properties of polythioether sealant cured with tripropylene glycol diacrylate （TPGDA） as curing agent were the best, and the mechanical properties and thermal stability of the sealant increased with increasing amount of TPGDA. And the appropriate amount of TPGDA was 1.00 phr. The addition of multifunctional mercaptan could improve the crosslinking degree of the sealant and also make the glass transition temperature increased.
参考文献/References
［1］ 刘嘉，苏正涛，栗付平. 航空橡胶与密封材料［Ｍ］. 北京:国防工业出版社，2011：276-278. ［2］ Khakimullin Y N， Minkin V S， Deberdeev T R， Polysulfide oligomer sealant: Synthesis， properties and applications［M］. Canada: CRC Press，2015:71-73. ［3］ 刘星北，王慧珊，章谏正，等. 国内外航空聚硫密封剂产品概况［J］. 粘接，2015，36（3）：83-87. ［4］ Rezaeian L， Zahedi P， Rezaeian A， et al. Optimized formulation of an oxidative curing system for liquid polysulfide sealants used in fuel tanks by D-optimal design method［J］. Journal of Applied Polymer Science， 2011，120（5）：2550-2562. ［5］ Zhou Baijie， He Dan， QuanYiwu， et al. The investigation on the curing process of polysulfide sealant by in situ dielectric analysis［J］. Journal of Applied Polymer Science，2012，126（5）：1725-1732. ［6］ 刘嘉. 二氧化锰硫化剂对聚硫密封剂性能的影响［J］. 中国胶粘剂，2012，21（5）：13-16. ［7］ 索军营. 环境温湿度条件对聚硫密封胶性能的影响［J］. 中国胶粘剂，2015，24（4）：20-22. ［8］ Hoyle C E， Lowe A B， Bowman C N. Thiol-click chemistry: A multifaceted toolbox for small molecule and polymer synthesis［J］. Chemical Society Reviews，2010，39（4）：1-34. ［9］ Mather B D， Viswanathan K ， Miller K M ， et al. Michael addition reactions in macromolecular design for emerging technologies［J］. Progress in Polymer Science，2006，31（5）：487-531.
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