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51313-02629-Acid Corrosion Mechanism and Characterization of E-Glass Fibers With and Without Boron

Product Number: 51313-02629-SG
ISBN: 02629 2013 CP
Author: Pu Gu
Publication Date: 2013
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Boron-free E-CR glass fibers behave differently than boron-containing E-Glass fibers in acidic environment especially in strong acids.  Corrosion and stress rupture behaviors of E-Glass fibers with and without boron in acidic environment were carefully analyzed in our recent corrosion studies.  The effect of boron on E-Glass fiber acid resistance was studied using weight loss SEM/EDS analysis and stress rupture test methods.  The glass leaching mechanism is discussed based on a detailed analysis of E-Glass fibers with varying level of boron.  The local chemistry of boron species in E-Glass is used to explain congruent dissolution of B Al and Ca which contrasts with the ion exchange mechanism as suggested by most literature.  The modified glass chemistry leads to significantly different leaching mechanism in acidic environment and results in superior acid corrosion resistance and improved mechanical performance for the boron-free E-CR glass fibers when used in a fiber reinforced polymer.

Boron-free E-CR glass fibers behave differently than boron-containing E-Glass fibers in acidic environment especially in strong acids.  Corrosion and stress rupture behaviors of E-Glass fibers with and without boron in acidic environment were carefully analyzed in our recent corrosion studies.  The effect of boron on E-Glass fiber acid resistance was studied using weight loss SEM/EDS analysis and stress rupture test methods.  The glass leaching mechanism is discussed based on a detailed analysis of E-Glass fibers with varying level of boron.  The local chemistry of boron species in E-Glass is used to explain congruent dissolution of B Al and Ca which contrasts with the ion exchange mechanism as suggested by most literature.  The modified glass chemistry leads to significantly different leaching mechanism in acidic environment and results in superior acid corrosion resistance and improved mechanical performance for the boron-free E-CR glass fibers when used in a fiber reinforced polymer.

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