A poly(s)ester amide adhesive and a preparation method thereof

CN122941344APending Publication Date: 2026-10-20PEKING UNIV
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Patent Information

Application Number
CN202510445028.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-10
Publication Date
2026-10-20

AI Technical Summary

Technical Problem

[0004]本发明的目的在于，针对现有可循环使用胶黏剂粘接强度低的问题，提供了一种聚(硫)酯酰胺胶黏剂及其制备方法

Benefits of technology

[0024]综上，本发明采用成本低廉且易于获取的氮丙啶和环状(硫代)酸酐作为单体，通过其自发开环共聚或阴离子开环共聚反应，实现了聚(硫)酯酰胺的高效合成。通过在氮丙啶单体或环状(硫代)酸酐单体上引入柔性取代基，或选用具有柔性烷基骨架结构的环状(硫代)酸酐单体，显著增强了共聚所得聚(硫)酯酰胺在高温条件下的链段运动能力，从而提升了聚合物的粘附性。此外，聚(硫)酯酰胺主链中密集分布的极性官能团能够形成多种分子间相互作用，从而提升聚合物的内聚能并增强其与基底间的界面粘附能，这种分子设计使得本发明中的胶黏剂在保持良好可循环使用特性的同时，兼具优异的粘附性能。

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Abstract

This invention discloses a poly(thio)ester amide adhesive and its preparation method. The invention uses aziridine and cyclic (thio) anhydride as monomers to prepare a poly(thio)ester amide with an alternating sequence structure through spontaneous ring-opening copolymerization or anionic ring-opening copolymerization. By introducing flexible substituents onto the aziridine monomer or cyclic (thio) anhydride monomer, or by selecting a cyclic (thio) anhydride monomer with a flexible alkyl backbone structure, the chain segment mobility of the copolymerized poly(thio)ester amide under high-temperature conditions is significantly enhanced, thereby improving the polymer's adhesiveness. Furthermore, the densely distributed polar functional groups in the poly(thio)ester amide backbone can form various intermolecular interactions, thereby increasing the polymer's cohesive energy and enhancing its interfacial adhesion energy with the substrate. This molecular design allows the adhesive of this invention to maintain good recyclability while also possessing excellent adhesive properties.
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