Next-generation super varnishes via reversible de-activation radical polymerization

通过可逆去活化自由基聚合的下一代超级清漆

• 批准号: 518396-2017
• 负责人: Maric, Milan
• 金额: $ 2.56万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=658755
• 关键词: Next; generation; super; varnishes; via

Coatings are integral for materials used in the automotive and aerospace industries. In this competitive sector, C&D Aerospace Canada Co. (subsidiary of C&D Zodiac Inc.) considers it vital to develop their own varnish coating formulations: a super varnish. Obvious "must-have" properties include resistance to cracking, prevention of shrinkage, high anti-flammability and adhesion to wood substrates. Further, the coating solution must be amenable to spraying techniques and must have an extended shelf-life. Through our previous interactions, we have developed a formulation that has high resin content (30% be weight) but has very low viscosity, thereby reducing the volatile organic content (VOC). It also combines several properties into one single molecule. In addition to meeting the initial requirements, the next step towards the development of a super varnish would be to develop greener processes with further reduction in VOC (which leads to improved anti-flammability properties) and self-healing characteristics. Greener processes includes not only reduction in VOC via water-borne coating processes, but also incorporating monomers from sustainable resources as much as possible. The use of reversible de-activation radical polymerization (RDRP) enables finer control of microstructure plus the ability to be readily polymerizable in dispersed aqueous systems. Self-healing properties are desirable, as materials that revert and close any surface damage/defect eliminates costly scratch-removal procedures. The application of RDRP to self-healing materials is cutting-edge, with reports only relatively recently highlighting this novel combination. With the incorporation of all these features, engineering of these novel resin coatings (multiple coatings, heat treatments, convective drying) will ensue to optimize material properties and process time, leading to a facile industrial implementation.******

涂料是汽车和航空航天工业中使用的材料不可或缺的一部分。在这个竞争激烈的领域，C&D Aerospace Canada Co.（C&D Zodiac Inc. 的子公司）认为开发自己的清漆涂料配方至关重要：超级清漆。 明显的“必备”特性包括抗开裂、防止收缩、高阻燃性和对木质基材的附着力。 此外，涂层溶液必须适合喷涂技术并且必须具有延长的保质期。 通过我们之前的互动，我们开发了一种树脂含量高（重量为30%）但粘度非常低的配方，从而降低了挥发性有机物含量（VOC）。 它还将多种特性结合到一个分子中。 除了满足最初的要求外，开发超级清漆的下一步是开发更环保的工艺，进一步减少挥发性有机化合物（从而提高阻燃性能）和自修复特性。 绿色工艺不仅包括通过水性涂料工艺减少挥发性有机化合物，还包括尽可能多地采用来自可持续资源的单体。 使用可逆失活自由基聚合 (RDRP) 可以更好地控制微观结构，并且能够在分散的水性体系中轻松聚合。自愈特性是理想的，因为材料可以恢复和封闭任何表面损伤/缺陷，从而消除昂贵的划痕去除程序。 RDRP 在自修复材料中的应用是前沿的，最近才有报道强调这种新颖的组合。通过整合所有这些功能，这些新型树脂涂层的工程（多重涂层、热处理、对流干燥）将随之优化材料性能和加工时间，从而实现轻松的工业实施。******