Structure and orientational order of industrial coatings under flow

Purpose and goal

Studies of orientation and rheology for liquid industrial paint systems have strengthened the company´s knowledge in several areas and have been carried out largely as planned, despite pandemic restrictions. Two experiments were performed on the neutron scattering facility SINQ at PSI in Switzerland (experimental station SANS1) with participation from both University and company. From the rheological measurements made within the project, new methods for characterization of paints are now used within the company. The results were presented to company employees who got insights into the use of neutron scattering techniques.

Expected results and effects

It was found that particles in the liquid model paint did orient during shear, but the experiment time was insufficient to ascertain the limits of this behavior and map how this can be controlled. Analysis of data from the latest neutron scattering experiment is currently ongoing and is expected to be completed during the autumn of 2021. Rheological measurement methods have also been developed and these have been directly put into use within the company for quality control and competence buildup.

Planned approach and implementation

The arrangement of having a postdoc employee at the university was very suitable to develop and try new methods as it has been possible to work on the same material that the company has in its development projects and production processes. Unfortunately, the pandemic has prevented some interaction between the company and the University, due to strict rules reventing physical visits. This is limiting when it comes to experimental activities. The arrangement was favorable for the company also as it provided an opportunity to recruit adn employ the person who worked as a postdoc.