聚氨酯自修复薄膜材料的制备及研究

发布时间：2018-04-30 13:08

  本文选题：自修复 + Diels-Alder反应　； 参考：《功能材料》2017年07期

【摘要】：以聚乙二醇(PEG-600)与2,4-甲苯二异氰酸酯(TDI)构建聚氨酯主链结构,在侧链引入呋喃甲胺(FMA)和4,4'-双马来酰亚胺基二苯甲烷(BMI)的Diels-Alder(DA)键,从而得到具有热致自修复性能的聚氨酯薄膜材料。该材料(0.47mm厚度)在550nm下具有较高的透明度(透光率82.0%)。当材料出现裂纹后,在120℃下加热5min可完全修复,且材料的机械强度可恢复84.7%。
[Abstract]:The main chain structure of polyurethane was constructed by using PEG-600 (polyethylene glycol) and TDI- (2-butadiene-4-toluene diisocyanate). The diels-Alderda-DA-bonds of FMAs and BMIs were introduced into the side chain. Thus, the polyurethane films with heat-induced self-repairing properties were obtained. The material has a high transparency (transmittance 82.0mm) under 550nm. When the material is cracked, the 5min can be repaired completely at 120 鈩，

本文编号：1824679