Understanding the Relationship Between Processing and Performance for Functional Materials

了解功能材料加工与性能之间的关系

• 批准号: 0928093
• 负责人: Tequila Harris
• 金额: $ 35.83万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928093&HistoricalAwards=false
• 关键词: Understanding; Relationship; Between; Processing; Performance

The research objective of this award is to gain a fundamental understanding of the manufacturing process of thin-film coatings and address a range of issues that impact their performance. The challenge of flexibly fabricating uniform defect-free functional materials for applications such as bioengineering, apparels, electronics, energy and so forth is not trivial, due to the interfacial phenomena between the material and coated solution. This project will address the relationship between processing and performance for complex polymer solutions directly coated onto woven structures through a synergistic mix of experimentation, modeling and performance testing. The flexibility and repeatability of the manufacturing process will be analyzed based on changing the processing conditions (i.e., temperature, velocity, casting thickness, etc.), using design of experiments (DOEs), and evaluated using destructive and non-destructive evaluation techniques. A theoretical model that predicts the required operating conditions to fabricate uniform defect-free carbon woven structures CWSs will be developed based on fundamental principles and validated against data collected from the DOE. Finally, performance analysis will be conducted to evaluate the film properties of the resulting functional material.Successful completion of this research will fundamentally broaden the knowledge base on how functional coated woven structures are fabricated in a uniform, defect-free manner. Although this work is applicable to many areas, due to the advancements needed in the renewable energy area, this project will focus on understanding the mechanisms that prohibit direct coating of polymer solutions onto functional materials, such as gas diffusion layers for fuel cell applications. Success of this investigation will present an approach to fabricate such functional materials more flexibly, with increased production rates, decreased waste, and using a more robust process, which will have an exponential economical impact, due to their use in transportation, stationary, and portable devices. To broaden the participation of underrepresented groups at minority and primary institutions not traditionally exposed to research, Dr. Harris has co-developed a program called ELECTRoDE: Educators Leading Energy Conservation and Training Researchers of Diverse Ethnicities.

该奖项的研究目标是对薄膜涂层的制造过程有一个基本的了解，并解决一系列影响其性能的问题。 由于材料和涂覆溶液之间的界面现象，灵活地制造用于诸如生物工程、服装、电子、能源等应用的均匀无缺陷的功能材料的挑战并不微不足道。该项目将通过实验、建模和性能测试的协同组合，解决直接涂覆在编织结构上的复杂聚合物溶液的加工和性能之间的关系。将基于改变加工条件（即，温度、速度、铸件厚度等），使用实验设计（DOE），并使用破坏性和非破坏性评估技术进行评估。预测制造均匀无缺陷碳编织结构CWS所需操作条件的理论模型将基于基本原理开发，并根据从DOE收集的数据进行验证。最后，将进行性能分析，以评估所得功能材料的薄膜特性。这项研究的成功完成将从根本上拓宽如何以均匀、无缺陷的方式制造功能涂层编织结构的知识基础。虽然这项工作适用于许多领域，但由于可再生能源领域的进步，该项目将重点了解禁止将聚合物溶液直接涂覆到功能材料上的机制，例如燃料电池应用的气体扩散层。这项研究的成功将提出一种更灵活地制造这种功能材料的方法，提高生产率，减少浪费，并使用更稳健的工艺，由于它们在运输，固定和便携式设备中的使用，这将产生指数级的经济影响。为了扩大少数民族和传统上不接触研究的初级机构中代表性不足的群体的参与，哈里斯博士共同开发了一个名为ELECTRODE的项目：教育工作者领导节能和培训不同种族的研究人员。