Silane‐functionalized Al₂O₃‐modified polyurethane powder coatings: Nonisothermal degradation kinetics and mechanistic insights

This work reports on nonisothermal degradation kinetics of polyurethane (PU)‐based powder coatings containing 1, 3, and 5%wt% vinyltrimethoxysilane functionalized Al 2 O 3 (V‐Al 2 O 3 ) nanoparticles. Thermogravimetric analysis of PU/V‐Al 2 O 3 powder coatings with different V‐Al 2 O 3 contents has been performed at different heating rates. Variation of activation energy ( E a ) of PU/V‐Al 2 O 3 powder coatings was modeled as a function of...