Creep and recovery of EPDM elastomer using a modified sandwich rheometer

Osanaiye, Gabriel J.; Adewale, Kolapo P.

doi:10.1016/s0142-9418(00)00044-1

Cited by 19 publications

(7 citation statements)

References 12 publications

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“…In the first case, we discuss a phenomenon of steric molecular state, where the macromolecules are not in their ''more stable'' molecular arrangement and the reaction with EVAMA leading to a more ''static'' system. [10,12,15] The compatibilization process does not always produce good interfacial adhesion, leading to good interphase interaction. The same additive acts on the two separated effects.…”

Section: Resultsmentioning

confidence: 99%

“…[6] The creep test is an important characterization due to its good simulation of deformations that occur at final application of the material, being capable of previewing material performance as a function of time. [10] Yet creep studies along short time intervals would give information about interfacial interaction in heterogeneous materials such as polymeric blends. [9] Physical aging can be related to creep, i.e., the damage caused due to slow relaxation of polymeric chains.…”

Section: Introductionmentioning

confidence: 99%

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Creep Behavior of PA6/NBR TPVs

Gomes

Soares

Oliveira

et al. 2010

International Journal of Polymer Analysis and Characterization

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The influence of compatibilizers and other additives in PA6/NBR blends is evaluated in terms of creep resistance. The results obtained are correlated with density, selective solvent extraction, tensile strength, DMA analysis, and scanning electron microscopy. Our studies show an enhancement of dimensional stability of samples with the presence of EVAMA in the PA6 master batch. On the other hand, better elastomeric behavior is achieved with the compatibilization process, oxazoline-modified NBR being the best compatibilizer. Also, the possibility of evaluating a material in conditions near to final applications, through a shot-time test, with minimal material waste is shown.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Creep Behavior of PA6/NBR TPVs

Gomes

Soares

Oliveira

et al. 2010

International Journal of Polymer Analysis and Characterization

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“…Typically short isothermal creep tests are conducted at various temperatures above T g , to create the master curves at a specified reference temperature using time temperature superposition principle (TTSP) . During testing, the test specimen is normally subjected to a tensile stress and the strain variations are measured with precise extensometers over a period of time in isothermal conditions . Recently, combination of tensile and compressive creep tests are being conducted using constant stress in cantilever orientations , three point bending orientation using dynamic mechanical analyzer.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and creep behavior of rotationally moldable linear low density polyethylene-fumed silica nanocomposites

Chandran

Waigaonkar

2015

Polym. Compos.

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Rotationally moldable linear low density polyethylene (LLDPE) is one of the most popular materials used for rotational molding. Yet, incorporation of additives is necessary to improve the mechanical, visco‐elastic, thermal as well as melt flow properties of LLDPE. In this article, the influence of fumed silica (FS) nanoparticles on the mechanical properties viz. tensile, flexural, and impact strengths of rotationally moldable LLDPE is investigated. The microstructural studies using SEM were conducted to study the dispersion of FS in LLDPE and correlated with the mechanical properties of the nanocomposites. Dynamic mechanical analysis (DMA) were also carried out to find the time–temperature dependent mechanical properties viz. storage modulus (E'), loss modulus (E”), and tan delta between 1 and 8 wt% of FS. DMA studies were extended to perform accelerated stepped isothermal creep studies to find out the influence of FS in creep strains. POLYM. COMPOS., 38:421–430, 2017. © 2015 Society of Plastics Engineers

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“…There have been extensive studies on the mechanical, viscoelastic, and vulcametric properties of the EPDM,4–9 which contains different additives. Ginic‐Markovic et al5 studied the viscoelastic behavior of filled and unfilled EPDM.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, vulcametric, and thermal properties of the different 5‐ethylidene 2‐norbornene content of ethylene‐propylene‐diene‐monomer vulcanized with different types and compositions of peroxides

Çavdar

Özdemir

Usanmaz

2009

J of Applied Polymer Sci

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Ethylene-propylene-diene-monomer (EPDM) rubber is an important commercial polymer. The vulcanization process significantly changes its thermal, mechanical, and vulcametric properties. This study was carried out to find optimum formulation of EPDM composite for a better application in automotive industry. Sixteen EPDM polymer samples having different 5-ethylidene 2-norbornene (ENB) and ethylene contents were vulcanized with different types and compositions of peroxide and coagents. The mechanical and vulcametric properties of these samples were measured and compared. The type of peroxide, coagent, and EPDM grade affected the mechanical, thermal, and vulcametric properties of the EPDM rubber to some extend. Use of aromatic peroxide and coagent increased the thermal stability slightly. Mechanical properties were changed very slightly with the change of peroxide type for the same content of peroxide and coagent. Scorch time and cure time decreased with initial increase of the peroxide content. EPDM compound vulcanized with BBPIB peroxide and TAC/S coagent has higher cure time than EPDM compound vulcanized with DMBPHa peroxide and TMPTMA coagent. Coran method was used for the modeling of experimental data. Velocity constant for the formation of peroxide radical and polymer radical were found for each case.

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Creep and recovery of EPDM elastomer using a modified sandwich rheometer

Cited by 19 publications

References 12 publications

Creep Behavior of PA6/NBR TPVs

Creep Behavior of PA6/NBR TPVs

Mechanical properties and creep behavior of rotationally moldable linear low density polyethylene-fumed silica nanocomposites

Mechanical, vulcametric, and thermal properties of the different 5‐ethylidene 2‐norbornene content of ethylene‐propylene‐diene‐monomer vulcanized with different types and compositions of peroxides

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