SBIR Phase I: Superhydrophobic Zinc Coatings for Anti-Corrosion Applications

SBIR 第一阶段：用于防腐应用的超疏水锌涂层

• 批准号: 1519664
• 负责人: Atieh Haghdoost
• 金额: $ 14.98万
• 依托单位: P & P Coating
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1519664&HistoricalAwards=false
• 关键词: SBIR; Phase; Superhydrophobic; Zinc; Coatings

This Small Business Innovation Research Phase I project aims to develop a superhydrophobic zinc coating that is expected to exhibit higher anti-corrosion performance than existing zinc coatings. Existing zinc coatings easily get wet and, consequently, their anti-corrosion performance is significantly reduced. As a result, these coatings are often treated with an additional layer of hexavalent chromate to improve their anti-corrosion performance. However, hexavalent chromium is a human carcinogen, which has been targeted for elimination by environmental regulations. Existing substitutes to this material provide lower performance at a higher cost and thus are not fully accepted in the industry. The superhydrophobic coating to be developed in this effort prevents water from wetting the surface. Therefore, this coating is expected to exhibit higher corrosion resistance without the need for the additional hexavalent chromate coating. This new coating, therefore, represents an eco-friendly replacement for the zinc coating treated with hexavalent chromate, and potentially exhibits higher anti-corrosion performance than existing alternatives. The proposed development can be adopted in the $370 million target market of US zinc coatings. The intellectual merit of this project includes developing superhydrophobic zinc coatings based on the technology invented by the company founders. Most existing superhydrophobic coatings are made of non-metallic materials such as polymers or ceramics, and therefore are not feasible for the proposed application. The superhydrophobic zinc coating provides a transformative solution for the corrosion problem when a metallic coating is required. The main objective of the proposed Phase I research is developing a superhydrophobic zinc coating, which eliminates the need for the hexavalent chromate treatment. This development is expected to provide corrosion protection equivalent, or superior, to that provided by the chromate-treated zinc coatings. The anti-corrosion properties of the superhydrophobic coating will be evaluated using salt spray tests and electrochemical techniques. In addition, durability of the superhydrophobic zinc coating will be investigated using the standard abrasion test.

这个小企业创新研究第一阶段项目旨在开发一种超疏水锌涂层，该涂层有望比现有的锌涂层具有更高的防腐性能。现有的锌涂层很容易被弄湿，因此，它们的抗腐蚀性能显著降低。因此，这些涂层通常用附加的六价铬酸盐层来处理，以提高其抗腐蚀性能。然而，六价铬是一种人类致癌物，已成为环境法规的目标。这种材料的现有替代品以较高的成本提供较低的性能，因此在工业上没有完全被接受。在这项工作中开发的超疏水涂层可以防止水浸湿表面。因此，这种涂层有望表现出更高的耐腐蚀性，而不需要额外的六价铬酸盐涂层。因此，这种新型涂层代表了六价铬酸盐处理锌涂层的环保替代品，并且可能比现有替代品具有更高的抗腐蚀性能。建议的发展可以在3.7亿美元的美国锌涂料目标市场中采用。该项目的智力价值包括在公司创始人发明的技术基础上开发超疏水锌涂料。大多数现有的超疏水涂层是由非金属材料制成的，如聚合物或陶瓷，因此不适合提出的应用。当需要金属涂层时，超疏水锌涂层为腐蚀问题提供了一种变革性的解决方案。第一阶段研究的主要目标是开发一种超疏水锌涂层，从而消除了六价铬酸盐处理的需要。这一发展有望提供与铬酸盐处理的锌涂层相当或更好的防腐保护。超疏水涂层的防腐性能将通过盐雾试验和电化学技术进行评价。此外，超疏水锌涂层的耐久性将采用标准磨损试验进行研究。