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一种增强应变的弹性体粘合剂,具有卓越的粘合强度和性

Chuanlong Li¹, Wenbo Dong¹, Longyu Li¹

¹College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China. kaiwu@scu.edu.cn.

Materials horizons

|August 3, 2023

概括

这项研究介绍了一种新型的自我强化聚氨粘合剂. 它仅通过接口故障实现了卓越的强度和性,为先进的粘合剂设计提供了灵感.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
粘附科学粘附科学粘附科学

背景情况:

传统的坚固和柔性粘合剂往往会在凝聚性和介面性上失败.
开发具有高强度,性和受控故障模式的粘合剂仍然是一个挑战.

研究的目的:

为了合成和描述一种新型的自我强化聚氨粘合剂.
在高性能粘合剂中研究一种独特的界面仅故障机制.

主要方法:

宏分子设计包括一个悬挂的粘合剂部分,层次的H键部分和一个可结晶的软片段.
一种基于聚氨的热粘合剂的合成.
通过拉皮剪切测试来评估粘合力的强度和性.

主要成果:

开发的聚氨粘合剂仅表现出界面故障,避免凝聚性损伤.
实现了高粘合强度 (11.37 MPa) 和解接工作 (10.32 kN m-1).
与许多现有的坚固粘合剂相比,表现出优越的性能.

结论:

自强化聚氨粘合剂为坚固和柔性材料提供了一个新的范式.
设计策略为未来高性能,方便拆卸的粘合剂提供了一个蓝图.
应力诱导结晶和等级H键是观察到的机械反应性质的关键.

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