Development of a NMP-free paint stripper

不含NMP脱漆剂的开发

• 批准号: 560286-2020
• 负责人: Guay, Daniel
• 金额: $ 1.46万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=706336
• 关键词: Development; NMP; free; paint; stripper

Our industrial partner, GreenSolv, is marketing a paint stripper, the AeroStrip 274WL, which contains N-Methyl-2-Pyrrolidone (NMP). It is used to remove paint coatings from metallic pieces so that they could be refurbished and reused. However, NMP (CAS 872-50-4) is almost banned in Europe and frowned upon in California. Large corporations such as the US Navy, Bombardier, Pratt & Whitney, Boeing & others are looking for a NMP-free paint stripper that could be as effective as the AeroStrip 274WL. The objective of this project is to make a new product, the AeroStrip 294WL, a NMP-free paint stripper. In a series of test performed by Scientific Material International, Inc (SMI) in Florida, in accordance with MIL-PRF-83936C (USAF) for aircraft wheels, landing gear components and other aircraft and support equipment, it was shown that the AeroStrip 294WL was causing excessive corrosion and hydrogen embrittlement on metallic pieces made of aluminium, magnesium and steel. Clearly, the current version of the AeroStrip 294WL is not acceptable for the aerospace industry. It is critical to understand the role NMP is playing in the formulation of the AeroStrip 274WL. NMP plays a determining role in removing paint coatings, by penetrating the layers of paint and breaking the bond between the paint and the object by swelling the paint. However, NMP is also playing a critical role in retarding/preventing corrosion and hydrogen embrittlement in metallic pieces. It is critical to understand the link between NMP and the corrosion and hydrogen embrittlement of metallic pieces, and how to remediate to this unexpected effect of the absence of NMP in the AeroStrip 294WL. This project will address these issues through a detailed evaluation of the role played by NMP, solution pH and solution alkalinity in the hydrogen embrittlement of metal coupons such as cadmium coated steel, aluminium and magnesium.

我们的工业合作伙伴 GreenSolv 正在销售一种脱漆剂 AeroStrip 274WL，其中含有 N-甲基-2-吡咯烷酮 (NMP)。它用于去除金属件上的油漆涂层，以便翻新和重复使用。然而，NMP (CAS 872-50-4) 在欧洲几乎被禁止，在加利福尼亚州也不受欢迎。美国海军、庞巴迪、普惠、波音等大公司正在寻找一种不含 NMP 且与 AeroStrip 274WL 一样有效的脱漆剂。该项目的目标是生产一种新产品 AeroStrip 294WL，一种不含 NMP 的脱漆剂。 Scientific Material International, Inc (SMI) 在佛罗里达州根据 MIL-PRF-83936C (USAF) 对飞机机轮、起落架部件以及其他飞机和支持设备进行的一系列测试表明，AeroStrip 294WL对铝、镁和钢制成的金属件造成过度腐蚀和氢脆。显然，当前版本的 AeroStrip 294WL 不适合航空航天业。 了解 NMP 在 AeroStrip 274WL 配方中发挥的作用至关重要。 NMP 在去除油漆涂层方面发挥着决定性作用，它可以渗透油漆层并通过使油漆膨胀来破坏油漆与物体之间的结合。然而，NMP 在延缓/防止金属件腐蚀和氢脆方面也发挥着关键作用。了解 NMP 与金属件的腐蚀和氢脆之间的联系以及如何补救 AeroStrip 294WL 中缺少 NMP 带来的意外影响至关重要。该项目将通过详细评估 NMP、溶液 pH 值和溶液碱度在镀镉钢、铝和镁等金属试样氢脆中所起的作用来解决这些问题。