Tensile Creep and Deformation Modeling of Vinyl Ester Polymer and Its Nanocomposite

Abstract

This article discusses tensile creep behavior of vinyl ester polymer and its nanocomposite with 0.5 wt% functionalized carbon nanofibers. It is shown that for a constant temperature the creep resistance decreases with increasing stress. At lower temperature, higher creep compliance was observed for vinyl ester as compared to nanocomposite, while at temperatures close to T g of vinyl ester creep compliance in nanocomposite was higher than that for vinyl ester. An analytical power-law relationship was used to predict the creep deformation behavior of both vinyl ester and its nanocomposite which showed good prediction of creep strain versus time, especially at lower temperatures and for lower applied stresses. A three-parameter Findley-type creep law for the compliance was also used. Good correlations between experimental data and the predictive model were obtained for both materials.

Creep behavior and modeling of neat, talc-filled, and short glass fiber reinforced thermoplastics

“…Some of these models were reviewed in Refs. [27] and [28]. The power law models have evolved over the years in order to be applicable to a wider range of temperatures, stress levels, and polymeric materials [29e31].…”

Tensile, creep and fatigue behaviours of short fibre reinforced polymer composites at elevated temperatures: a literature survey

“…It was observed that incorporation of the reinforcement in the polypropylene matrix reduced both the amount and the rate of creep strain. Plaseied and Fatemi used Findley's power law to represent short‐terms (up to 100 h) tensile creep behaviour of vinyl ester polymer and its nanocomposites with 0.5% functionalized carbon nanofibres at different temperatures and stress levels. The constants m and n were represented by: where a , b , c and d are material constants.…”

Modeling creep in polymeric composites: Developing a general integrated procedure

“…Applicability of these models is limited to the small range of composites and only for short term linear creep. Experimental observations for different polymers and their composites were the key factor in these studies [3,[9][10][11][12]. Some investigations focused on nonlinear viscoelastic behavior of polymers and their composites while single layer has been analyzed [13,14].…”