摘要
通过端氨基聚醚(T403)和马来酸二乙酯的Michael加成反应,合成了新型聚天门冬氨酸酯(PAE-F)。将PAE-F与六亚甲基二异氰酸酯(HDI)三聚体常温聚合,制备了新型聚天门冬氨酸酯(PAEs)聚脲涂层。采用FT-IR和元素分析表征了PAE-F。并用FT-IR和WAXD考察了PAE-F聚脲涂层的形态结构、反应活性和力学性能。与现有的几种PAEs相比,PAE-F与异氰酸酯组份的反应活性更低,凝胶时间为55 min^60 min。结构形态研究表明,PAE-F聚脲呈现非晶形态;氨基氢键化程度高,脲羰基总氢键化程度为57.2%,其中完善氢键化程度为63.1%。这种纯硬段聚脲涂层的强度和硬度高,具有一定的弹性。
A new type terminated polyoxypropyl tion. And a novel aliphati temperature. FT-IR and of polyaspartic esters （PAEs） ene （Jeffamine T403） and dialk c polyurea coating was synthesi Element analysis were used to called PAE-F was prepared from amine yl maleates via a Michael Addition Reaczed from PAE-F and HDI trimer at room confirm PAE-F. FT-IR and X-ray were adopted to study the morphology, structure slower reactivity with polyisocyanates than min. The PAE-F based polyurea shows SO and properties of the polyurea. me existing PAEs, and the gel PAE-F exhibits a time is 55 min-60 noncrystalline morphology. The degree bonded amidogen of the polyurea is high and the hydrogen-bonded urea carbonyl is of hydrogen 57.2%, including 63.1% ordered hydrogen bonding. This pure hard segment polyurea is elastomer coating material with high strength and hardness.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第3期55-58,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50373009)
国家"十五"科技攻关项目引导项目(2003BA871C)
关键词
脂肪族聚脲
聚天门冬氨酸酯
形态结构
氢键
反应活性
力学性质
aliphatic polyurea
polyaspartic esters
morphology and structure
hydrogen bonding
reaction activity
mechanical properties
