| 可自修复的黑色聚氨酯材料的制备与性能研究 |
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| 引用本文： | 胡先海,李根,咸玉席,刘翔,李明君,胡鹏威. 可自修复的黑色聚氨酯材料的制备与性能研究[J]. 功能材料, 2019, 50(5): 5128-5131,5137 |
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| 作者姓名： | 胡先海 李根 咸玉席 刘翔 李明君 胡鹏威 |
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| 作者单位： | 安徽建筑大学 材料与化学工程学院,合肥,230601;中国科学技术大学 中科院材料力学行为和设计重点实验室,合肥,230026 |
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| 摘 要： | 以多官能团树枝状聚酯多元醇(H3OP)为内核,通过原位聚合形成聚氨酯预聚体为内层,分散重氮黑3BF(3BF,CAS:6232-57-1)原位交联形成外层制备出可自修复的黑色聚氨酯(PU-3BF)。通过吸收光谱表征确定聚氨酯的结构以及分散重氮黑3BF(3BF)接入聚氨酯链。利用DSC和TG分别研究其玻璃化转变温度以及热稳定性。研究表明PU-3BF自修复过程主要通过N—H和■之间氢键形成来完成的。在室温下可多次重复修复,随着修复次数增加,材料修复效率和性能影响不明显。
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| 关 键 词： | 自修复 黑色聚氨酯 氢键 热稳定性 |
Synthesis and properties of a self-healing black polyurethane |
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| HU Xianhai,LI Gen,XIAN Yuxi,LIU Xiang,Li Mingjun,HU Pengwei. Synthesis and properties of a self-healing black polyurethane[J]. Journal of Functional Materials, 2019, 50(5): 5128-5131,5137 |
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| Authors: | HU Xianhai LI Gen XIAN Yuxi LIU Xiang Li Mingjun HU Pengwei |
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| Affiliation: | (School of Materials and Chemical Engineering,Anhui Jianzhu University,Hefei 230061,China;CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China,Hefei 230026,China) |
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| Abstract: | In this paper,self-healing black polyurethane (PU-3BF) was prepared by using dendritic polyester polyol (H3OP) with multi-functional groups as the core.The polyurethane prepolymer was formed into an inner layer by an in situ polymerization.The outer layer was formed by dispersing diazo black 3BF (3BF,CAS: 6232-57-1) in situ crosslinking. The expected structure of PU-3BF was characterized by FT-IR and UV-Vis spectra. The glass transition temperature and thermal stability of polyurethane were studied by DSC and TGA. The self-healing mechanism and property of PU-3BF were studied. The results showed that PU-3BF could be repaired repeatedly at room temperature,and with the increase of self-healing times,the effect on the self-healing efficiency and performance was not obvious. |
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| Keywords: | self-healing black polyurethane hydrogen bonds thermal stability |
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