A Protective Diffusion Layer Formed on Surface of Basaltic Fiberglass during Oxidizingстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] A protective diffusion layer formed on surface of basaltic fiberglass during oxidizing / A. V. Knot'ko, E. A. Pustovgar, A. V. Garshev et al. // Protection of Metals and Physical Chemistry of Surfaces. — 2011. — Vol. 47, no. 5. — P. 658–661. The present work studied the effect of diffusional Na-enrichment on the reaction kinetics of basaltic fiberglass and an alkali solution at a constant pH in the saturated Ca(OH)(2) and at a constant amount of alkali. It was found that the hydrolytic degradation of basaltic fiberglass is limited by the reaction of the alkali with a surface of silicate material and occurs similarly in different alkalies. The results of hydrolytic stability tests in an alkali solution were used to study the reaction with a liquid phase of solidifying cement. It was shown that the preoxidation of the fiber surface significantly decreases its reaction with the cement liquid phase. An analysis of Ca-enriched fibers that have been used in ventilated facades of buildings for 3 years showed that the reaction between basaltic mineral wool and the ambient environment in urban conditions and temperatures equal to or lower than room temperature occurs via acid hydrolysis. [ DOI ]

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