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加拿大航空航天公司(C&D Zodiac Inc.的子公司)认为开发自己的清漆涂料配方是至关重要的：超级清漆。明显的“必备”性能包括抗裂性、防收缩、高阻燃性和与木质基材的粘附性。此外，涂层溶液必须符合喷涂技术，并且必须具有较长的保质期。通过我们之前的互动，我们开发了一种树脂含量高(30%重量)但粘度非常低的配方，从而降低了挥发性有机含量(VOC)。它还将几种性质结合成一个单一的分子。除了满足最初的要求外，开发超级清漆的下一步将是开发更环保的工艺，进一步降低VOC(这将导致更好的阻燃性能)和自愈特性。更环保的工艺不仅包括通过水性涂料工艺减少VOC，还包括尽可能多地加入来自可持续资源的单体。使用可逆失活自由基聚合(RDRP)可以更精细地控制微观结构，并能够在分散的水体系中容易聚合。自我修复性能是可取的，因为修复和修复任何表面损伤/缺陷的材料消除了昂贵的划痕去除过程。RDRP在自我修复材料中的应用是最前沿的，直到最近才有报道强调这种新颖的组合。随着所有这些特征的结合，这些新型树脂涂层(多重涂层、热处理、对流干燥)的工程化将随之而来，以优化材料性能和工艺时间，从而实现轻松的工业实施。