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Reversible adhesion damping tapes based on layers of liquid crystalline elastomer

基于液晶弹性体层的可逆粘合阻尼胶带

基本信息

批准号：
EP/X035468/1
负责人：
Eugene Terentjev
金额：
$ 16.47万
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2022
资助国家：
英国
起止时间：
2022 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FX035468%2F1
关键词：
Reversible adhesion damping tapes based

项目摘要

Liquid crystalline elastomers have remarkable vibration damping properties, and the associated surface pressure-sensitive adhesion. The underlying physics relies on the added rotational degrees of freedom, presenting as the nematic director on macroscopic scale or as mobile rod-like mesogens on microscopic scale. The vibrational deformations in the material lose up to 97% of their energy into these rotational modes, resulting in an anomalously high mechanical loss factor in the material. Our analysis and tests established a direct relationship between this loss factor, and the strength of pressure-sensitive adhesion. As this adhesion is entirely based on the physical energy-damping mechanism, there is no chemical residue - nor degradation of the surface properties, suggesting the applicationj as truly reversible self-adhesive 'vibration damping tape' where the reversibility arises on entering and leaving the nematic LC state on heating/cooling. After developing a large library of new materials under ERC AdG 786659, we want to scale up for the industrial application of LCEs as damping adhesive tapes. The science is clear, and is in open press, but the challenge now is to make the transition to industry. For that we work closely with Lohman Tapes Group GmbH in Germany, and a startup Cambridge Smart Plastics Ltd, with the goal to: [a] complete the R&D stage of the tape product for specific Lohmann process and applications, and [b] establish a pilot plant in Brightlands Chemelot incubator campus in The Netherlands, that would work directly with the enduserindustries.

液晶弹性体具有显著的振动阻尼性能，以及与之相关的表面压敏粘合性。其物理基础依赖于所增加的转动自由度，在宏观尺度上表现为指向矢，在微观尺度上表现为移动的棒状介晶。材料中的振动变形将高达97%的能量损失到这些旋转模式中，导致材料中的机械损耗因子非常高。我们的分析和测试建立了该损耗因子与压敏粘合强度之间的直接关系。由于这种粘合完全基于物理能量阻尼机制，因此没有化学残留物，也没有表面性能的劣化，这表明应用是真正可逆的自粘合“振动阻尼带”，其中可逆性在加热/冷却时进入和离开非线性液晶状态时出现。在ERC AdG 786659下开发了一个大型新材料库后，我们希望扩大LCE作为阻尼胶带的工业应用。科学是明确的，并在公开出版，但现在的挑战是使过渡到工业。为此，我们与德国的Lohman Tapes Group GmbH和一家初创公司剑桥Smart Plastics Ltd密切合作，目标是：[a]完成针对特定Lohmann工艺和应用的胶带产品的研发阶段，[B]在荷兰的Cemelot孵化器园区建立一个试点工厂，直接与终端行业合作。