Effect of water absorption on the plastic deformation behavior of nylon 6

Miri, V.; Persyn, O.; Lefebvre, Jean‐Marc; Séguéla, Roland

doi:10.1016/j.eurpolymj.2008.12.008

Cited by 129 publications

(109 citation statements)

References 28 publications

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“…The observed minor decreases of tensile strengths and Young moduli due to the alkali conditioning lead us to conclude that the examined R-nylon fibers show excellent alkali resistance. There is some evidence in the literature that absorbed water may considerably affect the mechanical behavior of nylon 6, causing stiffness drops together with toughness improvement [31,32]. Such a phenomenon is demonstrated in the present case by the low Young modulus of the R-nylon fibers (724-728 MPa), considering that nylon 6 at the virgin state typically exhibits Young modulus in the range 1-3 GPa [33].…”

Section: Uniaxial Tensile Tests On R-nylon Fibersmentioning

confidence: 63%

Recycled nylon fibers as cement mortar reinforcement

Spadea

Farina

Carrafiello³

et al. 2015

Construction and Building Materials

199

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We investigate engineering applications of recycled nylon fibers obtained from waste fishing nets, focusing our attention on the use of recycled nylon fibers as tensile reinforcement of cementitious mortars. We begin by characterizing the tensile behavior of both unconditioned and alkali-cured recycled nylon fibers obtained through manual cutting of waste fishing net filaments, with the aim of assessing the resistance of such materials to chemical attacks. Next, we deal with compression and bending tests on cementitious mortars reinforced with recycled nylon fibers, and establish comparisons with the experimental behavior of the unreinforced material. In our analysis of different weight fractions and aspect ratios of the reinforcing fibers, we observe marked increases in the tensile strength and toughness of the nylon reinforced mortar, as compared with the unreinforced material. The presented results emphasize the high environmental and mechanical potential of recycled nylon fibers for the reinforcement of sustainable construction materials

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Section: Uniaxial Tensile Tests On R-nylon Fibersmentioning

confidence: 63%

Recycled nylon fibers as cement mortar reinforcement

Spadea

Farina

Carrafiello³

et al. 2015

Construction and Building Materials

199

View full text Add to dashboard Cite

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“…However, as aforementioned, both have similar effects on the mechanical response, which is the consequence of the role played by the amorphous phase during the deformation of the semi-crystalline thermoplastic matrix. Following Miri et al (2009) who investigated the tensile behaviour of neat polyamide 6 in different hygrothermal conditions, it seems that the mechanical response is mainly controlled by the distance to the glass transition temperature, called temperature gap, T À T g ðHÞ.…”

Section: Temperature-humidity Equivalencementioning

confidence: 99%

Modelling the influence of temperature and relative humidity on the time-dependent mechanical behaviour of a short glass fibre reinforced polyamide

Launay

Marco

Maïtournam

et al. 2013

Mechanics of Materials

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WOSInternational audiencePolymer matrix composites, and especially short glass fibre reinforced polyamides, are widely used in the automotive industry. Their application on structural components requires a confident mechanical design taking into account the sensitivity of the mechanical response to both temperature T and relative humidity H. In this paper, the constitutive model already developed by the authors (Launay et al., 2011) is applied to describe the non-linear time-dependent behaviour of a PA66-GF35 under various hygrothermal conditions. The extensive experimental database involves testing conditions under and above the glass transition temperature Tg. An equivalence principle between temperature and relative humidity is applied and validated, since the non-linear mechanical response is shown to depend only on the temperature gap T-Tg(H)

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“…This material exhibits a low glass temperature (around 70°C for a dry state) compared to the service temperature, which therefore requires a rich constitutive law accounting for viscosity, plasticity, damage [16,17]. The complexity is even reinforced by the hydrophilic nature of this matrix inducing a decrease of the glass temperature [18][19][20][21] and consequently a drop of the fatigue properties under humid service conditions [14,22]. The second main factor for these injection molded parts is the very strong coupling between the microstructure on the one hand and the geometry and the process parameters on the other hand.…”

Section: Introductionmentioning

confidence: 98%