SBIR Phase I: BioBased Coatings for Corrosion Protection

这项小型企业创新研究第一阶段项目旨在制备和评估新型生物基防腐涂料，该涂料由改性大豆油制成，在暴露于大气湿度后迅速固化，产生光滑的保护膜。这种固化机制是基于众所周知的反应性硅酮的室温硫化，并通过将反应性硅烷接枝到油甘油三酯的不饱和脂肪酸残基上来应用。这种方法提供了一个方便的单组分包，不需要活性稀释剂，紫外线或氧气固化启动。它不含醇酸或需要环氧大豆油。初步结果表明，交联反应相对较快，不需要任何挥发性聚结剂，膜完全固化。观察到涂层与不锈钢的良好附着力，并且通过接枝有机硅组分的浓度可以很容易地控制涂层的物理性能（硬度、抗拉强度、伸长率等）。活性硅烷的存在特别适合于防腐蚀，因为它作为除湿剂以及改善与金属表面的附着力。预计这项工作的成功完成将使生物基材料在防腐技术中取代石油基材料。该项目的更广泛的影响/商业潜力是提供来自可再生资源的永久有机涂料，为公众提供清洁技术。这些生物基涂料的目标是防腐应用，如气体和液体输送管道，桥梁和建筑物的建筑钢筋，工业设备等。金属结构的腐蚀对美国经济有重大影响。NACE 2002年的一项研究结果显示，美国每年因腐蚀造成的直接成本估计高达2760亿美元，约占美国国内生产总值的3.1%。该项目一期和二期的成功实施将在技术、商业、环境和经济方面产生以下影响：提高防腐性能，便于应用，降低资本投资，减少VOC/HAP和碳足迹，保护化石燃料资源，减少与腐蚀相关的行业成本，并为新开发产品的销售、制造和技术支持创造多达五个额外的工作岗位。

This Small Business Innovation Research Phase I project is designed to prepare and evaluate novel biobased corrosion protection coatings derived from modified soy oil that quickly cures upon exposure to atmospheric moisture yielding smooth protective films. This cure mechanism is based on the well known room temperature vulcanization of the reactive silicone and is applied here by grafting reactive silane onto the unsaturated fatty acid residues of the oil triglycerides. This approach provides a convenient one-component package and does not require reactive diluents, UV or oxygen for cure initiation. It does not incorporate alkyds or require epoxidized soy oil. Preliminary results show that crosslinking occurs relatively fast without requiring any volatile coalescing agents and the films are completely cured. Good adhesion to stainless-steel was observed and physical properties (hardness, tensile strength, elongation, etc.) of the coatings are expected to be easily controlled by the concentration of the grafted silicone component. The presence of reactive silane is particularly suitable for corrosion protection since it acts as a moisture scavenger as well as improving the adhesion with the metal surface. It is anticipated that successful completion of this work will replace petroleum-based materials with biobased materials in corrosion protection technology.The broader impact/commercial potential of this project is to provide permanent, organic coatings derived from renewable resources to offer clean technologies to the public. These biobased coatings are targeted for corrosion-prevention applications such as gas and liquid transmission pipelines, construction rebar for bridges and buildings, industrial equipment, etc. Corrosion of metallic structures has a significant impact on the US economy. Results of a NACE study (2002) shows that the total annual estimated direct cost of corrosion in the U.S. is a staggering $276 billion - approximately 3.1% of the nation's Gross Domestic Product. Successful implementation of Phase I & II of this project will have the following technical, commercial, environmental and economical impacts: improved corrosion protection and ease of application, low capital investment, reduction in VOC/HAP and carbon footprint, preservation of fossil fuel resources, reduction in corrosion related costs to the industry, and creation of up to an additional five jobs for sales, manufacturing, and technical support of this newly developed product.