Tubule Nanocontainers for Corrosion Inhibitors

用于缓蚀剂的管状纳米容器

• 批准号: 1029147
• 负责人: Yuri Lvov
• 金额: $ 23.84万
• 依托单位: Louisiana Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1029147&HistoricalAwards=false
• 关键词: Tubule; Nanocontainers; Corrosion; Inhibitors

The research objective of this project is to develop non-toxic nanocontainers loaded with corrosion inhibitors so they can be admixed to paint. To protect metals from corrosion (ships, industrial machines, petroleum platforms) one admixes into coating paint chemicals called corrosion inhibitors. However, these protective additives are easily washed out or decomposed (especially in sea water) and metal surfaces become rusted. The idea of this project is to load corrosion inhibitors into tiny containers, nanometer size tubes, and to close tube ends with stoppers. These inhibitor loaded nanotubes can be admixed to paint. Corrosion inhibitors will stay inside these nanotubes for months and years, and will be released in the coating defects providing corrosion healing. Corrosion of metals is a serious problem: $280 billion is spent annually for corrosion damage repair and protection in USA alone, and a variety of methods have been developed to overcome it. One of the disadvantages of inorganic inhibitors is their toxicity; for example, widely used chromates are proven to cause cancer and are recently forbidden. Nanocontainers to be developed in this project are halloysite clay nanotubes with length 800 nm and diameter 50 nm. Halloysite is an environmentally friendly nanomaterial; it is mined from natural deposits in thousand tons and is not toxic. An introduction of environmentally friendly organic inhibitor nanocontainers for protective coatings is very important. Additionally to scientific development, the two outreach tasks will be performed: the project will employ undergraduate researchers from Grambling State University, a Historically Black university; and, through contacts with K-12 schools, science teachers and students will be taught about nanomaterials, including simple experiments with anticorrosion coating based on loaded halloysite clay.

该项目的研究目标是开发装有腐蚀抑制剂的无毒纳米容器，以便将它们混合到油漆中。 为了保护金属（船舶、工业机器、石油平台）免受腐蚀，人们在涂料中掺入了一种称为腐蚀抑制剂的化学物质。然而，这些保护性添加剂很容易被洗掉或分解（尤其是在海水中），并且金属表面会生锈。该项目的想法是将腐蚀抑制剂装入微型容器、纳米尺寸的管中，并用塞子封闭管端。这些负载抑制剂的纳米管可以混合到油漆中。腐蚀抑制剂将在这些纳米管内保留数月甚至数年，并将在涂层缺陷中释放，从而实现腐蚀愈合。金属腐蚀是一个严重的问题：仅在美国每年就花费 2800 亿美元用于腐蚀损伤修复和保护，并且已经开发了多种方法来克服它。无机抑制剂的缺点之一是其毒性。例如，广泛使用的铬酸盐已被证明会致癌，最近已被禁止。 该项目将开发的纳米容器是长度800纳米、直径50纳米的埃洛石粘土纳米管。埃洛石是一种环保型纳米材料；它是从千吨天然矿藏中开采出来的，无毒。 引入环保型有机抑制剂纳米容器用于防护涂层非常重要。 除了科学发展之外，还将执行两项外展任务：该项目将聘请来自历史悠久的黑人大学格兰布林州立大学的本科生研究人员；通过与 K-12 学校的联系，科学教师和学生将学习有关纳米材料的知识，包括基于负载埃洛石粘土的防腐涂层的简单实验。