Effects of hydrothermal aging on moisture absorption and property prediction of short carbon fiber reinforced polyamide 6 composites

Sang, Lin; Wang, Chuo; Wang, Yingying; Hou, Wenbin

doi:10.1016/j.compositesb.2018.08.138

Cited by 65 publications

(45 citation statements)

References 26 publications

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“…This result had also been demonstrated by Sang et al. 35 However, it is observed that Mm of the PA6 resin decreases with water temperature. This phenomenon can be explained by the fact that the increasing water temperature can accelerate hydrolysis and increase the mass loss of PA6 resin.…”

Section: Resultssupporting

confidence: 84%

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

Lei

Zhang

2019

Journal of Reinforced Plastics and Composites

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Diffusion of moisture through composites is one of the main environmental causes of their deterioration and loss of service life. This paper deals with water diffusion in the unidirectional continuous carbon fiber reinforced polyamide 6 composites by experimental measurement, theoretical analysis, and numerical simulation. Immersion experiment is respectively conducted in distilled water at 25°C, 70°C, and 95°C for the pure polyamide 6 resin and the carbon fiber/polyamide 6 composite. Then, the theoretical Fickian and Langmuir models are employed to fit the gravimetric data of the specimens. Subsequently, water diffusion in the composite is also simulated using finite element method. Moreover, to capture the real distribution of fibers in the matrix, the random algorithm is developed to generate the computational composite models with randomly dispersed fibers. Finally, the comparison between the experimental, theoretical, and numerical results is made to assess the applicability of theoretical models and the influences of fiber distribution and interphase on the effective water diffusion coefficient of composite.

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Section: Resultssupporting

confidence: 84%

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

Lei

Zhang

2019

Journal of Reinforced Plastics and Composites

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“…In the literature, several diffusion models were previously adopted in order to describe the absorption behavior of PA and PA composites, 21,27,[29][30][31][32]37,35,38 with the Fickian model being the most used. In this study, both Fickian 41 and non-Fickian (Langmuir-type 42 ) diffusion models are used to fit the acquired experimental results; and a discussion will be made on which model best describes the moisture absorption process of the studied materials.…”

Section: Water Absorption and Hygroscopic Expansionmentioning

confidence: 99%

“…From previous work, it was overall observed for fiberglass and short CF reinforced polyamides that tensile strength and modulus exponentially decrease with water content, 27–31 and elongation at break increase 28,31 . For continuous CF, Arhant et al 32 investigated the moisture effect on the tensile and compressive properties of compression molded PA composites.…”

Section: Introductionmentioning

confidence: 99%

Moisture effect on the mechanical properties of additively manufactured continuous carbon fiber‐reinforced Nylon‐based thermoplastic

et al. 2020

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Additively manufactured composites have been demonstrating promising results with the development of new materials of high mechanical performance, which draws attention from several fields, for example, biomedical, electronics and aeronautics. However, as such materials are based on novel technologies, it is necessary to better understand their resulting characteristics and properties. For instance, evaluating the effect of environmental conditions on their mechanical performance is important, especially when moisture‐sensitive polymers such as polyamide (PA) are employed as matrix. This work aims to understand and to characterize the moisture effect on the mechanical properties of additively manufactured Nylon and continuous carbon fiber (CF)‐reinforced Nylon‐based thermoplastic. Tensile and compressive tests were carried out in accordance with ASTM standards for the printed samples at their maximum moisture content and for samples submitted to drying after the saturated condition. Moreover, moisture absorption and swelling behaviors were assessed and discussed. The experimental results showed that moisture significantly affects the fiber/matrix interface, as well as the adhesion between printed filaments. These changes led to a decrease in the general mechanical properties in saturated state, including those in the fiber direction. Furthermore, a permanent degradation was observed in some properties after drying. Thus, the importance of considering water content and aging effect on the characterization and engineering application of 3D printed CF/PA composite was evidenced.

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“…In the past, humidity-sensitive electronics were enclosed by metal housings, but the industry has been transitioning to composite polymer housings due to their lower cost and weight [7][8][9][10][11][12]. Unlike metal, these composite polymers can contain and transport moisture [13].…”

Section: Introductionmentioning

confidence: 99%

“…The governing equation for transient moisture transport in terms of moisture concentration was shown in the previous section to be (10). To obtain the relation in terms of vapor pressure, equation ( 10) is combined with equation ( 11) yielding ( )…”

mentioning

confidence: 99%

Moisture Transport Through Housing Materials Enclosing Critical Automotive Electronics

Roman

Han

et al. 2020

IEEE Trans. Compon., Packag. Manufact. Technol.

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Effects of hydrothermal aging on moisture absorption and property prediction of short carbon fiber reinforced polyamide 6 composites

Cited by 65 publications

References 26 publications

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

Moisture effect on the mechanical properties of additively manufactured continuous carbon fiber‐reinforced Nylon‐based thermoplastic

Moisture Transport Through Housing Materials Enclosing Critical Automotive Electronics

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