SBIR Phase I: Prototyping Reusable Dry Adhesives based on Scalable Fiber Spinning Technologies

这个小企业创新研究（SBIR）第一阶段项目提出了新的方法，使用可扩展的纤维纺丝方法在基材上制造干燥，可拆卸，可重复使用的粘合剂。 拟议的工作与其他研究计划截然不同，以复制生物启发的粘合机制，这些机制基于使用对齐的碳纳米管，光刻，化学蚀刻和耗时的批量微/纳米成型工艺。 这项新的研究提供了显着降低成本和更容易扩大规模的优势，使用无喷嘴纺丝工艺，这将取代更昂贵的方法，如微/纳米制造工艺。该研究结合了跨学科的机电流变学，以提高对干胶的理解。 纤维纺纱和收集技术将被设计用于提高产品性能，降低成本并提高纺纱工艺的可扩展性。 无针静电纺丝聚合物共混和等通道角挤压的引入将联合收割机加工阶段（如溶液制备、纺丝和纺丝整理）结合在一条生产线上，显著减少加工时间和成本。 原型聚合物粘合剂织物将进行表征测试，以根据客户要求优化性能。 该项目更广泛的影响/商业潜力将是对已确定和研究的目标市场的干燥、可重复使用的粘合剂产品的重大改进。 在汽车应用中，改进复合材料的粘合剂连接将通过用更轻的复合材料取代金属车身板来减轻重量，从而提高燃油经济性并节省能源。在消费胶粘剂领域，干胶的价值主张将提高产品安全性，减少脏乱液体对环境的影响，并改善儿童的教育体验。在标签中，一种易于去除的粘合剂将消除残留的胶水，从而简化和提高包装的可回收性，并减少垃圾填埋场的废物。此外，基于纺丝的新型粘合剂产品将在生物医学、电子、机器人、轮胎和军事领域尚未开发的市场中产生新的应用。

This Small Business Innovation Research (SBIR) Phase I project presents novel approaches to fabricating dry, removable, reusable adhesives on substrates using scalable fiber spinning methodologies. The proposed work differs drastically from other research programs to replicate bio inspired adhesive mechanisms, which are based on the use of aligned carbon nanotubes, photolithography, chemical etching, and time-consuming batch micro/nano molding processes. The new research offers advantages of significantly lower costs and easier scale-up using nozzle free nanofiber spinning processes, which will replace the more expensive approaches such as micro/nano fabrication process. The research incorporates interdisciplinary mechano-electro-rheology for improving understanding of dry adhesives. Fiber spinning and collection techniques will be engineered to improve product performance, reduce costs and improve scalability of the spinning process. Introduction of nozzleless electrospinning polymer blending and equal-channel angular pressing will combine processing stages such as solution preparation, spinning and spin-finish in one production line, significantly reducing processing time and costs. Prototype polymer adhesive fabrics will be characterized tested to optimize performance based on customer requirements. The broader impact/commercial potential of this project will be significant improvements in dry, reusable adhesive products for target markets already identified and studied. Improved adhesive joining for composites in automotive applications would lead to weight reduction by enabling replacement of metal body panels with lighter composites, increasing fuel economy and saving energy. In consumer adhesives, the value proposition for dry adhesives would improve product safety, reduce environmental impact from messy liquids, and improve educational experiences for children. In labels, an easily removable adhesive would eliminate residue glue, in turn simplifying and increasing recyclability of packaging and reducing waste in landfills. In addition, new adhesive products based on nanofiber spinning will lead to new applications in markets not yet explored in biomedical, electronics, robotics, tires and military segments.