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Validation of an Image Analysis Method for Evaluating the Chemical Resistance of Glass Fibers to Alkaline Environments

Department of Material Science, Faculty of Mechanical Engineering, Technical University of Liberec, 461 17 Liberec, Czech Republic
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Academic Editor: Jun Liu
Materials 2022, 15(1), 161; https://doi.org/10.3390/ma15010161
Received: 11 November 2021 / Revised: 20 December 2021 / Accepted: 23 December 2021 / Published: 27 December 2021
This article is focused on the comparison of the reliability of the results obtained by image analysis (newly proposed evaluation method) with well-known methods of evaluation of long-term corrosion resistance of glass fibers in an alkaline environment (pH > 12). The developed method is based on the analysis of scanning electron microscopy images (diameter and structures on the fiber surface). An experiment (52 weeks) was performed to evaluate two types of glass fibers: anticorrosive glass fibers (ARGFs) and E-glass fibers (EGFs). Three media were used to treat the fibers (23 ± 2 °C): H2O, Ca(OH)2, and K2SiO3. The ARGFs’ tensile strength did not reduce; a decrease by 68% was observed for EGFs in H2O. Tensile strength decreased by 32% and 85–95% in K2SiO3; by 50% and 64% in Ca(OH)2 for the ARGF and EGF, respectively. Statistical analysis was performed to validate the reliability and plausibility of the developed method. ARGFs and EGFs did not show any relationship between the fiber diameter and weight in H2O; however, the linear trends may predict this relationship in Ca(OH)2 and K2SiO3. For the ARGF and EGF, the cubic trend was suitable for predicting the change in fiber weight and diameter over time in Ca(OH)2 and K2SiO3. View Full-Text
Keywords: glass fiber; alkaline environment; image analysis; corrosion process; fiber weight loss; fiber tensile strength glass fiber; alkaline environment; image analysis; corrosion process; fiber weight loss; fiber tensile strength
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MDPI and ACS Style

Ryvolová, M.; Svobodová, L.; Bakalova, T. Validation of an Image Analysis Method for Evaluating the Chemical Resistance of Glass Fibers to Alkaline Environments. Materials 2022, 15, 161. https://doi.org/10.3390/ma15010161

AMA Style

Ryvolová M, Svobodová L, Bakalova T. Validation of an Image Analysis Method for Evaluating the Chemical Resistance of Glass Fibers to Alkaline Environments. Materials. 2022; 15(1):161. https://doi.org/10.3390/ma15010161

Chicago/Turabian Style

Ryvolová, Martina, Lucie Svobodová, and Totka Bakalova. 2022. "Validation of an Image Analysis Method for Evaluating the Chemical Resistance of Glass Fibers to Alkaline Environments" Materials 15, no. 1: 161. https://doi.org/10.3390/ma15010161

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