SGER: Interfacial Mechanics of Carbon Nanotube-Polymer Composites

SGER：碳纳米管-聚合物复合材料的界面力学

• 批准号: 0411603
• 负责人: Md Haque
• 金额: $ 6万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-02-15 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0411603&HistoricalAwards=false
• 关键词: SGER; Interfacial; Mechanics; Carbon; Nanotube

SGER: Interfacial Mechanics of Carbon Nanotube-Polymer Composites M. A. Haque, the Pennsylvania State UniversityEven though the superior electrical, mechanical and thermal properties of carbon nanotubes opens up possibilities of novel composite materials, superiority of the nanotubes alone does not guarantee superior composites because the composite properties strongly depend on the strength of the nanotube-matrix interfaces. Existing studies on polymer-nanotube interfaces are indirect and/or qualitative, which motivates this exploratory research to develop a novel experimental setup that will allow, for the first time, simultaneously qualitative and quantitative nanotube pull-out testing in-situ in the Transmission Electron Microscope. The PI will design and fabricate a MEMS device with pico-Newton force and nanometer displacement resolutions. Physical processes of polymer-nanotube interfacial deformation and failure will be identified and quantified to model the interfacial mechanics at the nanoscale without relying on simple scaling down approach. The findings will also advance our understanding of two closely related interface effects, adhesion and friction, in context of the nanotubes.

SGER：碳纳米管-聚合物复合材料的界面力学宾夕法尼亚州立大学M.A.哈克尽管碳纳米管优异的电、机械和热性能为开发新型复合材料提供了可能性，但单靠纳米管的优势并不能保证优异的复合材料，因为复合材料的性能强烈依赖于纳米管-基质界面的强度。现有对聚合物-纳米管界面的研究是间接的和/或定性的，这促使本探索性研究开发一种新的实验装置，首次允许在透射电子显微镜中同时进行定性和定量的纳米管拔出测试。PI将设计和制造具有皮牛顿力和纳米位移分辨率的MEMS器件。聚合物-纳米管界面变形和破坏的物理过程将被识别和量化，以在纳米尺度上模拟界面力学，而不依赖于简单的按比例缩小方法。这些发现还将促进我们对纳米管背景下两种密切相关的界面效应--粘着和摩擦--的理解。