文章摘要
光引发自修复微胶囊的制备及涂层自修复性能
Preparation and Coating Self-Healing Properties of UV-Initiated Self-Healing Microcapsules
  
DOI:10.16865/j.cnki.1000-7555.2018.02.020
中文关键词: 微胶囊  制备  光引发  自修复  涂层
英文关键词: microcapsules  preparation  UV-initiated  self-healing  coating
基金项目:国家自然科学基金青年基金资助项目(51403032);中央高校基本科研基金(16D110518)
作者单位
张 路1,王 炜1,2,俞 丹1,2,3,林 苗1 1.东华大学 化学化工与生物工程学院,上海 201620
2.生态纺织教育部重点实验室,上海 201620
3.三元控股集团有限公司,浙江 杭州 311221 
摘要点击次数: 151
全文下载次数: 
中文摘要:
      以光固化树脂脂肪族聚氨酯丙烯酸酯和光引发剂为芯材,脲醛树脂为壁材,采用原位聚合法制备了可用于光引发自修复的微胶囊。通过红外光谱、扫描电镜观察了微胶囊的形态及结构,采用光学显微镜、激光粒度分析仪、热重分析仪对自修复微胶囊的粒径、热稳定性及修复效果进行了表征。结果表明,芯材被成功包覆在微胶囊中,微胶囊合成的优化转速为500r/min,在此转速下,微胶囊的平均粒径为101.9μm,包覆率为51.46%,微胶囊热稳定温度为226 ℃。将所制备的微胶囊埋置于涂层中,通过光学显微镜可观察到涂层中的裂纹在UV 光照20min之后得到了明显的修复,且修复过程绿色高效。
英文摘要:
      A photo-initiated microcapsule with poly(urea-formaldehyde) shell was synthesized through in situ polymerization, in which aliphatic polyurethane acrylate and photointiator were used as photo-initiated healing agents. The surface morphology and structure of microcapsules were characterized by FT-IR and SEM. The size distribution and thermal stability of microcapsule were characterized by laser particle sizer and thermal gravimetric analyzer(TGA). The results show that microcapsules successfully encapsulate core materials and own a thermal stable temperature of 226 ℃. The optimized agitation rate is 500 r/min with a mean diameter of 101.9 μm and an encapsulation percent of 51.46%. The optical microscope (OM) images show the crack in microcapsule-embedded coating is successfully healed under UV irradiation for 20 min. This work provides a green and efficient self-healing process.
查看全文   查看/发表评论  下载PDF阅读器
关闭