Nylon 66/polyester hybrid cords: 1. Design and investigation of properties

Ayta, Ayşe; Yilmaz, Berrin; Deniz, Veli

doi:10.1007/s12221-011-0252-8

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…In [2], the viscoelastic properties of rayon, nylon and PET cords are studied under different temperature and humidity conditions, and considering different geometric structures (number of plies, twist levels) of the reinforcements. Tests on nylon/PET hybrid cords [3] and on aramid/nylon hybrid cords [4] have been also carried out and discussed. Experimental studies on the tensile behavior of aramid and polyamide cords are reported in [5].…”

Section: Introductionmentioning

confidence: 99%

Geometrical and Mechanical Modeling of Polymeric Multi-Ply Yarns

Pires da Costa,

Moscatelli,

Caracino

et al. 2024

Applied Sciences

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This work aims to describe and predict the complex mechanical behavior of polymeric cords used as reinforcements in tires. Starting from the observed microstructure of the cords and from macroscopic experimental tests performed on single-ply yarns, a comprehensive geometric and mechanical model is developed. The real geometry of the cord is replaced by an equivalent three-dimensional continuum of a cylindrical shape, with a properly defined non-isotropic inelastic constitutive behavior. The three-dimensional viscoelastic and viscoplastic material model developed by the authors for rayon fibers is employed for this purpose. The actual directions of filaments inside the cord are computed by an analytical model, accounting for the twist in the yarns and in the filaments inside each yarn. Such directions, relevant to points of the cord cross-section, are then averaged along the pitch of the cord to obtain mean directions which represent the virtual reinforcement directions to be used in the equivalent cylindrical-shaped model. This analysis strategy is implemented in a finite element procedure. For rayon cords, the developed simulation tool (fed with appropriate parameters) gives numerical results that compare well with the corresponding experimental results. This approach could be effectively utilized in the analysis of cord-reinforced rubber composites.

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Section: Introductionmentioning

confidence: 99%

Geometrical and Mechanical Modeling of Polymeric Multi-Ply Yarns

Pires da Costa,

Moscatelli,

Caracino

et al. 2024

Applied Sciences

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“…It was realized that the cords possess some benefits for tire carcass, breaker, belt, and belt protective layer applications with their superior fatigue performance, cut resistance, stiffness, lightweight, etc. Aytac et al 8,9 studied hybrid cord design and production with different twist levels. They found that the maximum tensile properties are obtained when the twist level of PET component in the hybrid cord is the same or higher than that of the nylon.…”

Section: Introductionmentioning

confidence: 99%

Study of thermomechanical properties of hybrid tire cord

Mahdavipour

Karimi

Hoseini³

2020

Polymers for Advanced Techs

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Thermomechanical properties of tire cords, which have a considerable influence on tire functions, were investigated in the current research. The nylon and polyester cords are the most commonly used polymers in the tire. Many efforts have been made to produce a new tire cord having the capability of integrating the desired properties of these two polymers into one cord. In this study, a new cord structure was developed using nylon 6,6 and polyester tire yarns. The effect of thermal treatment was studied at the temperatures of 180°C, 200°C, and 220°C under two different loads of 600 and 1800gf on thermomechanical properties of the nylon 6,6/polyester hybrid tire cord. Shrinkage and shrinkage force as thermal properties, as well as static and dynamic mechanical properties, were investigated. The relationship between the aforementioned properties and variation in the crystal structure and fiber orientation obtained from Differential scanning calorimetry (DSC) and Wide‐Angle X‐Ray Scattering (WAXS) analysis were examined too. The results showed that the higher tension leads to the higher initial modulus and storage modulus due to the crystallization of polymers during heat treatment. The shrinkage and shrinkage force also increased, as the tension increased. In addition, a decrease in residual shrinkage and shrinkage force were acquired because of an enhancement in the temperature.

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Mechanical behavior of nylon 66 tyre cord under monotonic and cyclic extension: Experiments and constitutive modeling

Wei

Feng

et al. 2017

Fibers Polym

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Nylon 66/polyester hybrid cords: 1. Design and investigation of properties

Cited by 4 publications

References 12 publications

Geometrical and Mechanical Modeling of Polymeric Multi-Ply Yarns

Geometrical and Mechanical Modeling of Polymeric Multi-Ply Yarns

Study of thermomechanical properties of hybrid tire cord

Mechanical behavior of nylon 66 tyre cord under monotonic and cyclic extension: Experiments and constitutive modeling

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