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首页> 外文学位 >Additive manufacturing of stretchable tactile sensors: Processes, materials, and applications.
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Additive manufacturing of stretchable tactile sensors: Processes, materials, and applications.

机译：可拉伸触觉传感器的增材制造：工艺，材料和应用。

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摘要

3D printing technology is becoming more ubiquitous every day especially in the area of smart structures. However, fabrication of multi-material, functional, and smart structures is problematic because of the process and material limitations. This thesis sought to develop a Direct Print Photopolymerization (DPP) fabrication technique that appreciably extends the manufacturing space for the 3D smart structures. This method employs a robotically controlled micro-extrusion of a filament equipped with a photopolymerization process. The ability to use polymers and ultimately their nanocomposites in this process is the advantage of the proposed process over the current fabrication methods in the fabrication of 3D structures featuring mechanical, physical, and electrical functionalities.;In addition, this study focused to develop a printable, conductive, and stretchable nanocomposite based on a photocurable and stretchable liquid resin filled with multi-walled carbon nanotubes (MWNTs). This nanocomposite exhibited piezoresistivity, means its resistivity changes as it deforms. This property is a favorable factor in developing resistance based tactile sensors. They were also able to resist high tensile strains while they showed conductivity.;Furthermore, this study offered a possible and low-cost method to have a unique and highly stretchable pressure sensitive polymer. This disruptive pressure sensitive polymer composed of an Ionic Liquid (IL) and a stretchable photopolymer embedded between two layers of Carbon Nanotube (CNTs) based stretchable electrodes. The developed IL-polymer showed both field effect property and piezoresistivity that can detect large tensile strains up 30%.;In summary, this research study focused to present feasible methods and materials for printing a 3D smart structure especially in the context of flexible tactile sensors. This study provides a foundation for the future efforts in fabrication of skin like tactile sensors in three-dimensional motifs. This thesis sought to (1) present a capable manufacturing method to fabricate (3D) smart structures from polymers and their nanocomposites, (2) develop a stretchable, printable, and conductive Carbon Nanotube (CNT) based nanocomposite, (3) develop a stretchable, piezoresistive, and printable ionic based photopolymer.
机译：3D打印技术每天都变得越来越普遍，尤其是在智能结构领域。然而，由于工艺和材料的限制，多材料，功能和智能结构的制造存在问题。本论文试图开发一种可直接扩展3D智能结构制造空间的直接印刷光聚合（DPP）制造技术。该方法采用装备有光聚合过程的长丝的机器人控制的微挤出。能够在此过程中使用聚合物及其最终的纳米复合材料的能力是与具有机械，物理和电功能的3D结构的制造相比，当前工艺所提出的过程的优势。此外，本研究着重于开发可印刷的，导电和可拉伸的纳米复合材料，其基于填充有多壁碳纳米管（MWNT）的可光固化和可拉伸的液体树脂。这种纳米复合材料表现出压阻性，意​​味着其电阻率随着变形而变化。该特性是开发基于电阻的触觉传感器的有利因素。它们还能够在表现出导电性的同时抵抗高拉伸应变。此外，这项研究提供了一种可能且低成本的方法，以拥有独特且高度可拉伸的压敏聚合物。这种破坏性压敏聚合物由离子液体（IL）和嵌入在基于碳纳米管（CNT）的两层可拉伸电极之间的可拉伸光敏聚合物组成。研发的IL聚合物既显示出场效应特性又显示了压阻性，可以检测高达30％的大拉伸应变。总而言之，本研究致力于提供可行的方法和材料来打印3D智能结构，尤其是在柔性触觉传感器的情况下。这项研究为将来在三维图案中制造类似触觉传感器的皮肤提供了基础。本论文试图（1）提出一种能够从聚合物及其纳米复合材料制造（3D）智能结构的有效制造方法，（2）开发一种可拉伸，可印刷且导电的碳纳米管（CNT）基纳米复合材料，（3）开发一种可拉伸的，压阻和可印刷的离子型光敏聚合物。

著录项

  • 作者

    Vatani, Morteza.;

  • 作者单位

    The University of Akron.;

  • 授予单位 The University of Akron.;
  • 学科 Mechanical engineering.;Materials science.;Nanotechnology.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 194 p.
  • 总页数 194
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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