Relationship between process chain and application of nanoparticulate coatings

如今，纳米颗粒涂料对于大量应用非常重要。涂层的性能不仅取决于组分材料，而且还受到各自结构特征的强烈影响。 各种参数决定了层的最终结构，从而决定了所得的性质，例如后续的工艺步骤（配制、加工和干燥）。因此，在本项目中，通过改变不同的影响参数来研究工艺链的每一步。合成的和商业化的纳米颗粒经过化学修饰，使它们既稳定又能够进一步官能化，并形成分子网络。我们追求在改性纳米粒子之间建立交联，旨在实现具有受控机械性能的涂层。 在项目的第一阶段，通过改变每个工艺阶段的参数，使用未改性的颗粒，检查了结构形成和所得膜性能的变化。在该项目的第二阶段，将通过纳米颗粒交联对结构形成进行详细研究，通过改变相关参数来有效控制涂料配方。此外，还考虑利用狭缝模头涂布作为第二涂布工艺来改性基材以靶向结合至颗粒。

Nowadays, nanoparticulate coatings are highly important for a plethora of application. The properties of the coatings do not only depend on the component materials, but are strongly influenced by the respective structural characteristics as well. A variety of parameters determines the final structure of the layers, and thus the resulting properties, such as the subsequent process steps (formulation, processing and drying). Hence, in this project every step of the process chain is investigated by varying the different influential parameters. Synthesized and commercial nanoparticles are chemically modified so that they can be both stable and capable of further functionalization, and a molecular network formation. We pursuit a cross-linking establishment among the modified nanoparticles, aiming towards coatings with controlled mechanical properties. During the first phase of the project the changes of the structure formation and the resulting film properties were examined, using unmodified particles, by varying parameters on each process stage. In the second phase of the project a detailed investigation of the structure formation, via nanoparticle crosslinking, towards an effective control on the coatings formulations through the variation of the relevant parameters will take place. In addition, the modification of the substrate for targeted binding to the particles is also considered utilizing the slot die coating as a second coating process.