Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide

Fischer, Joerg; Bradler, Patrick R.; Akhras, Mohamad H.; Wallner, Gernot M.; Lang, Reinhold W.

doi:10.3390/polym10080829

Open AccessArticle

Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide

by

Joerg Fischer

^*

,

Patrick R. Bradler

,

Mohamad H. Akhras

,

Gernot M. Wallner

and

Reinhold W. Lang

Johannes Kepler University Linz, Institute of Polymeric Materials and Testing, Altenberger Strasse 69, 4040 Linz, Austria

^*

Author to whom correspondence should be addressed.

Polymers 2018, 10(8), 829; https://doi.org/10.3390/polym10080829

Submission received: 21 June 2018 / Revised: 16 July 2018 / Accepted: 22 July 2018 / Published: 27 July 2018

(This article belongs to the Special Issue Polymers: Design, Function and Application)

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Abstract

To assess the potential use of polyamide (PA) for solar-thermal systems applications, the effect of water with varying chlorine content on the fatigue crack growth (FCG) resistance of two PA formulations differing in their stabilizer packages was investigated at 80 °C. A commercial PA containing 30 wt % glass fibers and a standard stabilization package (PA-0) was used as the reference material. For the other formulation, the reference material PA-0 was compounded with two additional stabilizers (PA-S1). Keeping the specimen geometry and initial loading conditions the same, the total number of cycles to ultimate specimen failure was found to be reduced with an increase in chlorine content for both materials. As to the effect of the chlorine content on crack growth kinetics, the most pronounced effect in enhancing the crack growth rates or decreasing the FCG resistance was determined between 0 ppm and 1 ppm chlorine content. When comparing the relative change of FCG resistance in chlorinated water (10 ppm) to the FCG resistance in non-chlorinated water (0 ppm), the additional stabilization in the material PA-S1 appears beneficial over the stabilization in the reference material PA-0.

Keywords: fatigue crack growth resistance; glass fiber reinforced polyamide; superimposed mechanical-environmental testing; chlorinated water; elevated temperature; stabilizer system

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MDPI and ACS Style

Fischer, J.; Bradler, P.R.; Akhras, M.H.; Wallner, G.M.; Lang, R.W. Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide. Polymers 2018, 10, 829. https://doi.org/10.3390/polym10080829

AMA Style

Fischer J, Bradler PR, Akhras MH, Wallner GM, Lang RW. Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide. Polymers. 2018; 10(8):829. https://doi.org/10.3390/polym10080829

Chicago/Turabian Style

Fischer, Joerg, Patrick R. Bradler, Mohamad H. Akhras, Gernot M. Wallner, and Reinhold W. Lang. 2018. "Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide" Polymers 10, no. 8: 829. https://doi.org/10.3390/polym10080829

APA Style

Fischer, J., Bradler, P. R., Akhras, M. H., Wallner, G. M., & Lang, R. W. (2018). Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide. Polymers, 10(8), 829. https://doi.org/10.3390/polym10080829

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Influence of Hot Chlorinated Water and Stabilizer Package on the Fatigue Crack Growth Resistance of Glass Fiber Reinforced Polyamide

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