Abstract
Lowering the curing temperature for powder coatings is desirable with regard to the coating of temperature sensitive substrates. However, commercial available weather-resistant stable powder coatings need curing temperatures >180 °C. The reactivity of various catalysts on the reaction between an uretdione cross-linker and OH groups were carried out on the basis of low molecular model systems. The results were transferred to polymeric systems consisting of the reactive components of a powder coating composition. The investigations were carried out using non-isothermal and isothermal DSC measurements as well as rheological measurements of the complex melt viscosity. However, the curing reaction occurred in a two-step reaction mechanism whereas the first reaction step could by quantitatively separated applying non-isothermal DSC measurements.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
