Improvement of NP-GLIDE coatings and development of anti-fouling coatings

我们利用Lorama的资金和NSERC CRD赠款开发了聚氨酯(PU)和环氧树脂涂料，其中包含用于除湿启用的接枝液体成分的纳米池(NP-Glide涂料)。这些涂料含有4-8wt%的聚二甲基硅氧烷(PDMS)作为防污剂(或去湿促进剂)，具有优异的防污性能。在这些表面上，常见的液体，如浑水或肥皂水、葡萄酒、醋、咖啡、牛奶、酱油、软饮料、食用油、机油和酒精以较低的基片倾斜角干净地滑动，不会留下任何痕迹。此外，涂鸦油漆和墨水很容易**收缩。此外，它们是透明的、耐磨的，并能附着在许多基材上。这些涂料的优越性能和众多潜在应用促使加拿大涂料添加剂公司Lorama开发它们以实现商业化。然而，我们用于NP-Glide涂料的单官能团PDMS，即含有一个末端官能团的PDMS，仍然比PU或环氧树脂涂料配方中的其他成分更昂贵。此外，当涂层在水中浸泡超过一天时，涂层仍会进行表面重建，这是一个涉及将极性较低的PDMS抽出到较极性涂层基质中的过程。因此，这笔赠款被用于a)为单功能PDMS寻找替代或补充的防污剂，以及b)抑制NP-Glide涂层的表面重建。为第二个项目确定的原则随后将被用来促进开发用于船体的防污海洋涂料。这一项目的成功将引起学术界的兴趣，因为这项研究的结果将促进我们对防污剂的工作原理和控制表面重建的因素的理解。开发的各种聚合物和最终涂层将对Lorama具有巨大的商业价值。它们的商业化将为Lorama提供创新的产品线，并加强安大略省和加拿大的经济。

We developed, using funds from Lorama and an NSERC CRD grant, polyurethane (PU) and epoxy coatings that contained nano-pools of a grafted liquid ingredient for de-wetting enablement (NP-GLIDE coatings). These coatings contain 4 to 8 wt% poly(dimethyl siloxane) (PDMS) as the anti-smudge agent (or de-wetting enabler) and exhibit superior anti-smudge properties. On these surfaces, common liquids such as muddy or soapy water, wine, vinegar, coffee, milk, soy sauce, soft drinks, cooking oil, engine oil, and alcohols cleanly slide at low substrate tilt angles without leaving a trace behind. Further, graffiti paints and inks readily**contract. Additionally, they are transparent, wear-tolerant, and adherent to many substrates. The advantageous properties and numerous potential applications of these coatings have prompted Lorama, a Canadian coating additive company, to develop them for commercialization. However, the monofunctional PDMS, PDMS bearing one terminal functional group, that we use for NP-GLIDE coatings is still more expensive than other components in a PU or epoxy coating formulation. Moreover, the coatings still surface-reconstruct, a process involving the withdrawal of the less polar PDMS into the more polar coating matrices, when they are immersed in water for more than one day. Thus, this grant is applied a) to find an alternative or complementary anti-smudge agent for monofunctional PDMS and b) to inhibit the surface reconstruction of NP-GLIDE coatings. The principles established for the second project will then be used to facilitate the development of an anti-fouling marine coating for use on the hull of a ship. The success of this project will be of interest to the academic community because the results of this research will advance our understanding of the operating principles of anti-smudge agents and factors governing surface reconstruction. The various polymers and final coatings developed will be of tremendous commercial value to Lorama. Their commercialization will provide**Lorama with innovative product lines and strengthen the economies of both Ontario and Canada.