Oleophilic non-stick coatings through surface structures for cookware

炊具表面结构的亲油不粘涂层

• 批准号: 519202422
• 负责人: Dr.-Ing. Tim Radel
• 金额: --
• 依托单位: Geschäftsbereich Materialbearbeitung und Bearbeitungssysteme
• 依托单位国家: 德国
• 项目类别: Research Grants (Transfer Project)
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/519202422?language=en
• 关键词: Oleophilic; non; stick; coatings; through

According to the current state of the art, either non-stick coatings based predominantly on polyfluorocarbons or sol-gel coatings and thus exhibiting an oleophobic character are used for cookware. Alternatively, bright steels or enamels are used, which exhibit an oleophilic property but do not lead to any non-stick effect. To counteract these critical points, the combination of surface structuring by laser and an organosilicon non-stick coating (PECVD process) is being pursued in the proposed research project. The primary goal is to create an oleophilic non-stick coating in a demonstrator for cookware, in particular pans. Two scientific objectives are at the center of the investigations. One is to increase the understanding of the relationship between the laser parameters and the mechanical as well as morphological properties of the structure used. These laser-induced non-periodic structures (NPS) offer a promising approach to create an olephilic surface that promotes homogeneous and rapid distribution of the oil despite elevated temperatures and its continuous availability. Moreover, the geometrical and mechanical properties of the structure are expected to have an influence on the structure-coating interaction. On the other hand, a plasma polymer coating with high thermal as well as mechanical stability, as well as a low surface energy should be developed. This coating represents a unique innovation compared to previously used coatings, as it is free of perfluorooctanoic acid (PFOA) and other perfluorinated carboxylic acids commonly used to produce polytetrafluoroethylene (PTFE, commercial name Teflon®) and other fluorine-containing polymers as auxiliaries in the manufacture of non-stick coatings. It is known that PFOA does not degrade in the environment and therefore these substances are referred to as eternity chemicals. For PFOS and PFOA, their production, use, placing on the market and import as a substance itself, as well as in mixtures and articles (products) are thereby banned in the EU with a few exceptions and will be further banned in the future.

根据现有技术，主要基于多氟烃的不粘涂层或溶胶-凝胶涂层并因此表现出疏油特性用于炊具。或者，使用亮钢或搪瓷，其表现出亲油性，但不会导致任何不粘效果。为了解决这些关键问题，在拟议的研究项目中，正在寻求通过激光和有机硅不粘涂层（PECVD工艺）进行表面结构化的组合。主要目标是在用于炊具，特别是平底锅的演示器中产生亲油不粘涂层。两个科学目标是调查的中心。一个是增加对激光参数与所用结构的机械和形态特性之间关系的理解。这些激光诱导的非周期性结构（ESTs）提供了一种有前途的方法来创建一个亲油表面，促进均匀和快速的分布，尽管温度升高和其连续可用性的油。此外，结构的几何和机械性能预计会对结构-涂层相互作用产生影响。另一方面，应开发具有高热稳定性和机械稳定性以及低表面能的等离子体聚合物涂层。与以前使用的涂料相比，这种涂料代表了一种独特的创新，因为它不含全氟辛酸（PFOA）和其他常用于生产聚四氟乙烯（PTFE，商品名Teflon®）和其他含氟聚合物的全氟羧酸，作为制造不粘涂料的助剂。众所周知，PFOA在环境中不会降解，因此这些物质被称为永恒化学品。就全氟辛烷磺酸和全氟辛酸而言，除少数例外情况外，欧盟已禁止其生产、使用、投放市场和作为物质本身进口，并禁止其在混合物和物品（产品）中的使用，今后还将进一步禁止。