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Siloxane-based polymers as protective coatings against SO2 dry deposition

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Bogdana Simionescu, Mihaela Olaru, Magda Aflori, Florica Doroftei

Editorial: High Performance Polymers, 23(4), p.326-334, 2011.

Rezumat:

The research is focused on investigating the relative resistance of a monumental limestone (Repedea from Romania), protected with different siloxane-based polymeric coatings, used in north-eastern part of Romania for the construction of many stone monuments. Three worldwide used siloxane-based polymers, namely Lotexan-N, Silres® BS 290 and Tegosivin HL 100 and a newly designed hybrid nanocomposite containing silsesquioxane units (TMSPMA) were selected as polymeric coatings, their resistance being tested towards SO2 dry deposition in the presence of humidity artificially accelerated ageing. A comparative study of the obtained results states that the stone samples treated with the new hybrid siloxane-based nanocomposite show a better behavior after being submitted to SO2 saturated atmosphere.

Cuvinte cheie: limestone, nanocomposite, silsesquioxane