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Chemical Corrosion of E‐Glass Fibers in Oxalic and Other Organic Acids
Author(s) -
Jones Robert L.
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00659.x
Subject(s) - oxalic acid , corrosion , aqueous solution , chemistry , organic acid , glyoxylic acid , degradation (telecommunications) , inorganic chemistry , materials science , polymer chemistry , organic chemistry , telecommunications , computer science
Corrosion of E‐glass fibers in aqueous organic acids has been investigated. Oxalic acid is particularly severe and causes almost total strength loss after exposure for only a few days. Of particular importance is that oxalic acid is a degradation product of the plastic matrix of glass reinforced plastic materials. Other organic acids, such as glyoxylic and malonic acids, also corrode the glass fibers, and these too are likely degradation products of plastic. The proposed mechanism of corrosion is an ion exchange reaction in which metal ions on the glass surface are replaced by hydrogen ions from the acid. This is enhanced by complex formation of the leached cation with the anion associated with the acid. Some cations are leached more extensively in some acids compared with others, and boron has been implicated in the corrosion by organic acids.