STTR Phase I: Conversion of Enhanced Copper Foils to Wire Forms

STTR 第一阶段：将增强型铜箔转变为线材形式

• 批准号: 1346254
• 负责人: Kyle Kissell
• 金额: $ 22.5万
• 依托单位: NanoRidge Materials
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1346254&HistoricalAwards=false
• 关键词: STTR; Phase; Conversion; Enhanced; Copper

This Small Business Technology Transfer Phase I project will substantially advance 1) approaches to combine carbon nanotubes (CNT) into metal matrices, 2) processes to convert copper/CNT composites into wire while preserving CNT integrity, 3) methods to induce CNT alignment during either nanocomposite production or extrusion in order to optimize electrical conductivity, and 4) process control to ensure that the technology can be scaled to industrially-relevant volumes. The largest challenge in this proposed research is understanding the role of CNT alignment as it pertains to electrical conductivity and controlling the alignment to produce the desired results. The research objectives seek to solve that challenge through inducing CNT alignment during the Cu/CNT production and also during the subsequent extrusion into wire. The anticipated results are 1) a Cu/CNT wire that exhibits an electrical resistivity of 1.30 x 10-6 Ohm.cm (100% IACS - 1.68 x 10-6 Ohm.cm) @ 20 deg C, and 2) a well-defined process that can consistently produce that performance at industrial volumes.The broader impact/commercial potential of this project includes the development of a copper conductor with superior electrical performance which will have significant commercial and societal value. Copper is the world?s most widely used electrical conductor, consuming approximately twenty-five billion pounds of copper annually. However, no significant improvement in the electrical performance of copper has been realized since the International Annealed Copper Standard (IACS) established the electrical resistivity to be 1.68 x 10-6 Ohm.cm in 1913. The benefits of an enhanced copper conductor will be most highly valued in applications requiring increased electrical conductivity, current capacity, thermal conductivity, and tensile strength. Key markets for early adoption of this technology include electrical transmission, electric motors, transformer windings, subsea oil and gas, electronics, and aerospace. In total, the estimated market potential for the Cu/CNT wire product enabled by this research is on the order of two billion pounds per year. It is for these reasons that the International Copper Association describes the output of this project as "an advanced copper-carbon nanocomposite material that would truly have a transformative effect on a broad area of technology and would be of immense benefit to society".

这个小型企业技术转移第一阶段项目将大大推进1)将碳纳米管(CNT)结合到金属基质中的方法，2)在保持碳纳米管完整性的同时将铜/碳纳米管复合材料转化为线材的工艺，3)在纳米复合材料生产或挤压过程中诱导碳纳米管取向的方法，以优化导电性，以及4)工艺控制，以确保该技术能够规模化到与工业相关的规模。在这项拟议的研究中，最大的挑战是理解碳纳米管对齐的作用，因为它与导电性有关，并控制对齐以产生预期的结果。研究目标试图通过在铜/碳纳米管生产过程中以及随后的挤压成丝过程中诱导碳纳米管取向来解决这一挑战。预计的结果是1)在20℃时，铜/碳纳米管导线的电阻率为1.30×10-6欧姆·厘米(100%IACS-1.68×10-6欧姆·厘米)，以及2)一种明确的工艺，可以在工业批量下持续生产这种性能。该项目的更广泛的影响/商业潜力包括开发具有卓越电性能的铜导体，这将具有重大的商业和社会价值。铜是世界上使用最广泛的导体吗？S，每年消耗大约250亿磅的铜。然而，自1913年国际退火铜标准(IACS)将铜的电阻率确定为1.68×10-6欧姆·厘米以来，铜的电性能并没有实现显著的改善。在需要更高的导电性、电流容量、导热性和抗拉强度的应用中，增强铜导体的好处将得到高度重视。早期采用这项技术的主要市场包括电力传输、电机、变压器绕组、海底石油和天然气、电子和航空航天。总体而言，通过这项研究实现的铜/碳纳米管线材产品的估计市场潜力约为每年20亿磅。正是出于这些原因，国际铜业协会将该项目的成果描述为“一种先进的铜-碳纳米复合材料，它将真正对广泛的技术领域产生变革作用，并将对社会产生巨大的好处”。