Creep behavior of high density polyethylene after aging in contact with different oil derivates

Habas-Ulloa, Amelia; d’Almeida, J.R.M.; Habas, Jean‐Pierre

doi:10.1002/pen.21743

Cited by 16 publications

(11 citation statements)

References 27 publications

(31 reference statements)

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“…Specimens were taken from pressed plates and cut out of jerrycan side walls. 9 A further possibility to determine the creep behaviour of HDPE is by transient rheometry as described by Habas-Ulloa et al 11 after aging in contact with different oil derivates. However, this method was not chosen because the data gained does not apply to the material model in the simulation.…”

Section: Measuring Of the Young's Modulus And Creep Behaviour In Tensionmentioning

confidence: 99%

The Internal Pressure Test in Experiment and Simulation—Influence of the Wall Thickness Variation and the Change of the Packaging Behavior after the Impact of Standard Liquids

et al. 2012

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The effect of the wall thickness variation of blow-moulded bodies made of high-density polyethylene on an internal pressure test after prestoring the packaging with standard liquids was evaluated in experiments and simulations. The objects of the investigation were jerrycans used for the transportation and storage of dangerous goods.The wall thickness was determined using two alternative methods to the magnetostatic measurement. These alternative methods are used for research purpose to get a volumetric model of the jerrycan wall as a geometric model for the simulation. The comparison of the experiments and the simulations of the internal pressure test were performed using the digital image correlation method. The integral strain and deformation of the whole jerrycan was detected by measuring the total mass of the jerrycan being filled with water during the internal pressure test. This is a suitable alternative to the optical measurements of local deformation by the digital image correlation method. Prestorage at 40 C without the influence of chemicals strengthens the jerrycan, whereas the swelling effect of butyl acetate and hydrocarbon mixture softens the jerrycan. The comparison with the experiment is necessary to verify the accuracy of the simulation. It shows that the deformation can be simulated more precisely by using the actual measured geometry. The weakening of the high-density polyethylene caused by a hydrocarbon mixture can be simulated using the Arrhenius equation. The aim of the simulation was to discover whether it is possible to use specimens to predict the behaviour of a packaging both after the influence of standard liquids.

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Section: Measuring Of the Young's Modulus And Creep Behaviour In Tensionmentioning

confidence: 99%

The Internal Pressure Test in Experiment and Simulation—Influence of the Wall Thickness Variation and the Change of the Packaging Behavior after the Impact of Standard Liquids

et al. 2012

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“…Semicrystalline thermoplastic polymers have been intensively studied over in recent decades to understand and predict their mechanical behavior. Depending on the nature of the polymer, the presence of water and temperature may have several effects on its mechanical behavior such as recrystallization, plasticization, or aging …”

Section: Introductionmentioning

confidence: 99%

Physicochemical and mechanical degradation of polyamide 11 induced by hydrolysis and thermal aging

Maiza

Lefebvre

Brusselle-Dupend

et al. 2019

J of Applied Polymer Sci

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This article deals with the effect of both temperature and water activity on polyamide 11 physicochemical and mechanical properties. The purpose of this work is to describe the ductile-brittle transition of polyamides during aging in a wet environment using a mechanical behavior model. For that it is necessary to make physicochemical analyzes (DSC, FTIR, GPC, viscosity) and mechanical tests (uniaxial tensile test and dynamic mechanical thermal analysis). All of these tests were performed on unaged samples and on aged samples for until 60 days. Two types of aging conditions were performed: In water in an acidic medium at temperature, and in purely thermal conditions in a neutral environment. Changes in mechanical properties with aging were observed in the polymer and were correlated to morphological changes deduced from the physicochemical characterizations. An increase of the second yield stress related to the recrystallization and a decrease of the strain at break due to the decrease of the molecular weight were observed during aging.

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“…Tomlins et al7 investigated the influence of temperature on creep behavior of poly(vinyl chloride) (PVC). Habas‐Ulloa et al8 carried out their research on the creep behavior of high‐density polyethylene (HDPE) after aging in different media.…”

Section: Introductionmentioning

confidence: 99%

Creep and Dynamic Mechanical Analysis Studies of Peroxide‐Crosslinked Ethylene‐Octene Copolymer

Theravalappil¹,

Svoboda²,

Poongavalappil³

et al. 2012

Macro Materials & Eng

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An ethylene‐octene copolymer (EOC) (45 wt% octene) is crosslinked using dicumyl peroxide (DCP). Differential scanning calorimetry (DSC) reveals a very low melting temperature (50 °C). The network density is evaluated by gel content. While 0.2–0.3 wt% of peroxide leads only to a molecular weight increase (samples completely dissolved in xylene), 0.4–0.6 wt% of peroxide caused network formation. High‐temperature creep was measured at 70, 120, and 200 °C at three stress levels. At 200 °C and above 0.6 wt% of peroxide, degradation due to chain scission is observed by rubber process analyzer (RPA) and is again supported by creep measurements. Residual strain at 70 °C is found to improve with increasing peroxide level. Dynamic mechanical analysis (DMA) reveals a strong influence of peroxide content on storage modulus and tan δ, in particular in the range 30–200 °C.

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Creep behavior of high density polyethylene after aging in contact with different oil derivates

Cited by 16 publications

References 27 publications

The Internal Pressure Test in Experiment and Simulation—Influence of the Wall Thickness Variation and the Change of the Packaging Behavior after the Impact of Standard Liquids

The Internal Pressure Test in Experiment and Simulation—Influence of the Wall Thickness Variation and the Change of the Packaging Behavior after the Impact of Standard Liquids

Physicochemical and mechanical degradation of polyamide 11 induced by hydrolysis and thermal aging

Creep and Dynamic Mechanical Analysis Studies of Peroxide‐Crosslinked Ethylene‐Octene Copolymer

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