| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 692303 | Progress in Organic Coatings | 2015 | 9 Pages |
•Plasma coatings based on diethylphosphatoethyltriethoxysilane were investigated.•Molecular structures based on polysiloxane and polyphosphate were detected.•Fire-retardant properties were tested using cone calorimetry.•A significant increase in time to ignition was observed for coated polymer samples.
Protective coatings from diethylphosphatoethyltriethoxysilane (DEPETS) have been deposited on different polymer substrates in a plasma discharge operated at atmospheric pressure. Plasma polymer chemistry and structure were characterized by means of Fourier transform infrared spectroscopy (FTIR), laser desorption ionization-mass spectrometry (LDI-MS), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). A chemical structure of the plasma polymer has been proposed based on the coating molecular characterization. Coatings were deposited on polycarbonate (PC) and polyamide 6 (PA6) substrates. The flame retardant properties of coated substrate samples were assessed using cone calorimetry and compared to those of bare substrates. A significant increase in the time to ignition (TTI), up to +143%, was recorded after coating deposition due to the formation of a high-performance barrier layer at the surface of both polymer substrates.
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