INVESTIGADORES
MONTEMARTINI pablo Ezequiel
artículos
Título:
Enhanced slurry erosion resistance of low friction and highly hydrophobic halloysite-fluoro-polysilsesquioxane coatings
Autor/es:
FRÍAS GALLARDO, LUANA; MONTEMARTINI, PABLO EZEQUIEL; PENOFF, MARCELA ELISABETH
Revista:
WEAR
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Año: 2023
ISSN:
0043-1648
Resumen:
Multifunctional coatings were obtained by a sol-gel co-condensation of a fluorinated silane andtetraethoxysilane over activated Halloysite nanotubes (hHNT). They were applied onto epoxybased substrates (neat epoxy or hHNT loaded) with different curing conditions. The coatingscharacterization showed low friction and high hydrophobicity. The coefficient of friction againststainless steel was 0.1, according to the nanoscratch test and the advancing contact anglesreached values in the range 135-145°. The materials were subjected to a slurry erosion testunder high speed flow condition and wettability was used to characterize the surface integrityover erosion-cumulative time periods. Fluorine containing coatings exhibited an outstandingresistance to the high speed slurry erosion (HSSE). After one hour of HSSE test, averageadvancing contact angles of 145° were measured for the fluorinated samples
