摘要
通过界面聚合法,利用单体异佛尔酮二异氰酸酯、交联剂乙二醇与乳化剂聚乙烯醇共同反应制备聚氨酯壁材,以石蜡为芯材,制备纳米胶囊。采用红外光谱、扫描电镜、热重分析、差式扫描量热、动态光散射等测试方法,研究了纳米胶囊的组成、表面形貌、热稳定性、包埋率和粒径分布。结果表明,由异佛尔酮二异氰酸酯和乙二醇为反应单体,聚乙烯醇为乳化剂,70℃反应4 h,可制得包埋率为88.8%的相变纳米胶囊,其可耐受240℃高温,表面可形成大量氢键,平均粒径最小可达到246.9 nm。
Polyurethane wall materials are prepared by interfacial polymerization using isophorone diisocyanate as monomers,ethylene glycol as crosslinking agent and polyvinyl alcohol as emulsifier.Nanocapsules are prepared with paraffin as core materials.The composition,surface morphology,thermal stability,embedding rate and particle size distribution of nanocapsules are studied by infrared spectroscopy,scanning electron microscopy,thermogravimetric analysis,differential scanning calorimetry and dynamic light scattering.The results show that the phase change nanocapsules with the embedding rate of 88.8% can be prepared by using isophorone diisocyanate and ethylene glycol as reaction monomers,polyvinyl alcohol as emulsifier,and reaction at 70℃ for 4 h.The capsules are stable at high temperature of 240℃,and a large number of hydrogen bonds can be formed on the surface.The average particle size can reach 246.9 nm.
作者
杭厚霖
鲁希华
HANG Hou-lin;LU Xi-hua(College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 200051,China)
出处
《印染》
北大核心
2019年第2期32-36,55,共6页
China Dyeing and Finishing
关键词
整理剂
相变纳米胶囊
聚氨酯
耐髙温
finishing agent
phase change nanocapsules
polyurethane
high temperature resistance
