Study of self-stratifying compositions |
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Authors: | Helena Kuczyńska Ewa Langer Elżbieta Kamińska-Tarnawska Dmitry A Kulikov Eugene A Indeikin |
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Affiliation: | (1) Institute for Engineering of Polymer Materials and Dyes, ul. M. Skłodowskiej-Curie 55, 87-100 Toruń, Poland;(2) YarLI, pr.Oktyabrya, 87, 150044 Yaroslavl, Russia;(3) Yaroslavl State Technical University, Moscovsky pr. 88, 150023 Yaroslavl, Russia |
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Abstract: | Paint applied as a single layer, and its spontaneous separation to form a primer and a top coat, is one of the newest concepts
of the effective and economical application of two layers in one step. The influence of the molecular weight of epoxy oligomer
and acrylic polymer and their ratio on self-stratification was investigated. The degree of stratification depending on molecular
weight and their mutual ratio was determined using ATR-FTIR spectroscopy, differential scanning calorimetry, microscopy techniques,
adhesion tests, and surface tension measurements. Phase separation and self-stratification of two-component homogenous mixtures
were followed using FTIR technique and surface tension measurements. As a result of these investigations, optimal oligomeric/polymeric
composition was selected. The obtained coating system showed good mechanical properties, gloss, and interlayer adhesion. |
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Keywords: | Self-stratifying coatings Phase separation Solubility parameters Polymer compatibility |
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