The influence of ageing of epoxy coatings on adhesion of polyurethane topcoats and protective properties of coating systems

Evolution of Principle and Practice of Electrodeposited Thin Film: A Review on Effect of Temperature and Sonication

“…As applied to materials, surface engineering may be coatings or special surface treatments. They include processes such as diffusion treatments, selective hardening, plating, hardfacing, thermal spray coatings, high-energy treatments such as laser processing, and organic coatings such as paints and plastic laminates [1][2][3][4][5]. Involvement with coatings dates back to the metal ages of antiquity in gold beating and gilting [6,7] and can be said to have transformed itself from what was mainly an empirical craft, into a key technology, grounded on scientific principles within a span of few decades [8][9][10].…”

Stone-chipping and adhesion deterioration of automotive coating systems caused by outdoor weathering of underneath layers

“…Thus, protection strategies against weathering are usually implemented in the final layer. But, there are situations in which the weathering resistance of underneath layers becomes influential as well [7]. For example, in the painting process of exterior objects (like pipelines, bridges, etc.…”

“…Degradations which typically occur during such short periods are usually neglected and the final layers are heedlessly applied over the weathered underneath layers. Due to the importance of underneath layer performance and their interfacial interactions with their attached top layers, the weathered underneath layer can jeopardize the coating performance of the whole coating system [7]. An automotive coating system is usually a multi-layer coating system which totally grants the main requirements needed for a car body during its service life.…”

Morphology, dynamic rheology, and cohesive properties of epoxy‐modified polyurethane–acrylate microemulsions prepared by in situ surfactant‐free polymerization

“…Therefore, hybrid materials that combine PU and other polymers have gotten increasing attention because the resulting materials, such as the combination of PU and polyacrylate (PA), often exhibit superior properties over the individual components . Epoxy resins are also used as multifunctional polyols in the synthesis of WPU dispersions because of their superior physicomechanical properties and multiple possibilities of crosslinking . Better solvent resistance and cohesive strength can be obtained by the introduction of epoxy resin to PU, but the brittleness also increases sharply .…”