Oxidative Degradation of Nylon 66 Filaments

Vachon, Raymond N.; Rebenfeld, Ludwig; Taylor, Hugh S.

doi:10.1177/004051756803800707

Cited by 20 publications

(5 citation statements)

References 9 publications

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“…35 The weakening of water-absorbed PA66 becomes more severe at elevated temperatures at which the amide groups are decomposed to carboxyl, amine, and imide groups. 36 The change in the molecular structure of PA66 after water adsorption reduces its strength and dimensional stability 37–40 and affects its friction and wear effects. Stuart and Briscoe 41 reported that water absorption increased the friction coefficient of PA66 by increasing the contact area.…”

Section: Resultsmentioning

confidence: 99%

Effect of thermal aging on mechanical and tribological behaviors of short glass fiber–reinforced PA66

Autay

Njeh

Dammak

2018

Journal of Thermoplastic Composite Materials

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The use of polyamide (PA) composites in a variety of thermal conditions can enormously affect their durability that is a very important issue for designers and users. In this study, mechanical and tribological behaviors of PA66 reinforced by various weight fractions of short glass fiber were investigated. All studied materials were subjected to accelerated thermal aging tests. Three-point bending flexural tests were carried out to determine the mechanical behavior. Reciprocating tribotester was employed to determine friction and wear behaviors. Tribological tests were carried out without lubrication and under ambient conditions. Ball on flat contact configuration was adopted for friction tests. Wear tests were carried out against an abrasive counterface. Results showed that flexural strength and elastic modulus increased when increasing glass fiber rate for all tested materials. In the contrary, coefficient of friction and wear resistance decreased. Results showed that the thermal aging increased the flexural features and reduced the coefficient of friction. The effect of thermal aging on the wear resistance depends on the reinforcement rate.

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Section: Resultsmentioning

confidence: 99%

Effect of thermal aging on mechanical and tribological behaviors of short glass fiber–reinforced PA66

Autay

Njeh

Dammak

2018

Journal of Thermoplastic Composite Materials

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“…41 The weakening of water-absorbed PA66 becomes more severe at elevated temperatures at which the amide groups are decomposed to carboxyl, amine, and imide groups. 40 The change in the molecular structure of PA66 after water adsorption reduces its strength and dimensional stability 42 –46 and affects its friction and wear effects. Stuart and Briscoe 47 reported that water absorption increased the friction coefficient of PA66 by increasing the contact area.…”

Section: Resultsmentioning

confidence: 99%

Effect of hygrothermal aging on mechanical and tribological behaviors of short glass-fiber-reinforced PA66

Autay

Njeh

Dammak

2018

Journal of Thermoplastic Composite Materials

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Mechanical and tribological behaviors of polyamide 66 reinforced by various weight fractions of short glass fiber were investigated. All studied materials were subjected to accelerated hygrothermal aging tests. Three-point bending flexural tests were carried out to determine the mechanical behavior. Reciprocating tribotester was employed to determine friction and wear behaviors. Tribological tests were carried out, without lubrication and under ambient conditions. Ball on flat contact configuration was adopted for friction tests. Wear tests were carried out against an abrasive counterface. Results showed that flexural strength and elastic modulus increased when increasing glass fiber rate for all tested materials. In the contrary, the coefficient of friction and the wear resistance decreased. Results showed that the hygrothermal aging decreased the flexural features and increased the coefficient of friction. The effect of hygrothermal aging on the wear resistance depends on the reinforcement rate.

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“…Vachon et al studied oxidative degradation of nylon. 13 In this study the exposure to oxidative aqueous environments was studied in nylon 6-6 filaments. Both chemical and physical properties were studied as a function of exposure.…”

Section: Literature Reviewmentioning

confidence: 99%

Reliability study of an emerging fire suppression system

Miller¹,

Rossati²,

Fritz³

et al. 2015

J. Chem. Health Saf.

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Self-contained fire extinguishers are a robust, reliable and minimally invasive means of fire suppression for gloveboxes. Plutonium gloveboxes are known to present harsh environmental conditions for polymer materials; these include radiation damage and chemical exposure, both of which tend to degrade the lifetime of engineered polymer components. The primary component of interest in self-contained fire extinguishers is the nylon 6-6 machined tube that comprises the main body of the system. Thermo-mechanical modeling and characterization of nylon 6-6 for use in plutonium glovebox applications has been carried out. Data has been generated regarding property degradation leading to poor, or reduced, engineering performance of nylon 6-6 components. In this study, nylon 6-6 tensile specimens conforming to the casing of self-contained fire extinguisher systems have been exposed to hydrochloric, nitric, and sulfuric acids. This information was used to predict the performance of a load bearing engineering component comprised of nylon 6-6 and designed to operate in a consistent manner over a specified time period. This study provides a fundamental understanding of the engineering performance of the

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Oxidative Degradation of Nylon 66 Filaments

Cited by 20 publications

References 9 publications

Effect of thermal aging on mechanical and tribological behaviors of short glass fiber–reinforced PA66

Effect of thermal aging on mechanical and tribological behaviors of short glass fiber–reinforced PA66

Effect of hygrothermal aging on mechanical and tribological behaviors of short glass-fiber-reinforced PA66

Reliability study of an emerging fire suppression system

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