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柔性粘合性弹性体具有强力触发的超高粘合强度

Xiao Zhao¹, Zoriana Demchuk¹, Jia Tian²

¹Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA. saitot@ornl.gov.

Materials horizons

|December 6, 2023

概括

研究人员开发了一种新型的柔性粘合性弹性体,通过压缩力触发的按需粘合. 这项创新为先进材料应用提供了超高强度和受控固化.

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

背景情况:

弹性体对于先进技术至关重要,其粘合性质决定了接口性能.
传统的永久粘合剂面临着诸如过早粘合和接触不良等挑战,限制了它们的应用.
现有的触发粘附方法 (UV,热) 在许多需要外部源的场景中是不切实际的.

研究的目的:

开发一种新型的,即时使用的粘合性弹性体,可按需粘合.
为了克服传统永久性和外部触发粘合剂的局限性.
为了实现可控的安装和固化过程,以提高材料性能.

主要方法:

一个前体的配方,包括一个囊分离的,两组分固化系统.
施加压缩力以触发粘附并启动固化过程.
固化弹性体的粘合性质的表征,包括剥离和膝盖剪切强度.

主要成果:

这种新型弹性体表现出由压缩力触发的按需粘附.
实现了超高强度,剥离强度为1.2 × 10^4 N m^-1和膝盖剪切强度为7.8 × 10^3 kPa.
粘附性归因于液态前体的优良表面接触,以及固化弹性体中加强的双相设计.

结论:

开发的弹性体提供按需粘附,克服了永久粘合剂的局限性.
压缩触发系统允许在安装和固化之间控制延迟,优化流程.
这项技术可以降低能源成本,防止故障,并改善先进材料应用中的安装.

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