Influence of clay on the vulcanization kinetics of fluoroelastomer nanocomposites

Kader, M. Abdul; Nah, Changwoon

doi:10.1016/j.polymer.2004.01.052

Cited by 94 publications

(53 citation statements)

References 30 publications

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“…In agreement with the above, the increase in torque values using oscillating disc rheometer, during vulcanization of a fluoroelastomer-clay nanocomposite was attributed by Kader and Nah [13] to the formation of confined elastomer network within the silicate galleries. An accelerating effect of quaternary ammonium salt modified clay was also reported.…”

Section: The Effect Of Clay Contentsupporting

confidence: 83%

“…The vulcanization kinetics of fluoroelastomer (FKM) filled with unmodified and organo-modified clay was studied by Kader and Nah [13], with both, oscillating disc rheometer and DSC under isothermal and dynamic conditions. The organo-modified clay enhanced curing through the accelerating effect of quarternary ammonium salt used in the clay modification, while the unmodified clay showed cure retardation due to absorption of curative for in situ clay modification.…”

Section: Introductionmentioning

confidence: 99%

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The effect of layered silicates on the crosslinking reaction of silanol‐terminated polysiloxane

Vasilakos

Triantou

Tarantili

2014

Polymer Engineering & Sci

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The effect of incorporation of clay nanoparticles on the vulcanization reaction of silanol-terminated polysiloxane was studied. Three different types of commercial clays were investigated as reinforcement, namely: Cloisite 20 A (organically modified with nonpolar aliphatic chains), Cloisite 30B (modified with aliphatic chains containing hydroxyl-end groups) and Nanofil 116, an unmodified montmorillonite as a reference. Nanoclays were found to increase the rate of curing, assessed by viscosity measurements, in all the examined systems and the acceleration rate is proportional to the content of the additive. Moreover, an increase of the area of peaks corresponding to the formation of SiAOASi bonds (900-1200 cm 21) was recorded by FTIR spectroscopy for pure and reinforced poly(dimethylsiloxane) (PDMS). Temperature modulated differential scanning calorimetry was also used for accurately monitoring the curing reaction of organoclay/PDMS hybrids, through the heat capacity and the enthalpy of cold crystallization measurements. For pure PDMS low reaction rate was observed during the first 200 min, followed by fast acceleration. A linear increase of the reaction rate as a function of time was observed for the organoclay/PDMS hybrids. POLYM. ENG. SCI., 55:957-965, 2015.

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Section: The Effect Of Clay Contentsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

The effect of layered silicates on the crosslinking reaction of silanol‐terminated polysiloxane

Vasilakos

Triantou

Tarantili

2014

Polymer Engineering & Sci

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“…If a polymer chain intercalates between two silicate layers, it can hardly find another chain to react with; i.e., silicate layers behave like rigid obstacles that prevent cross-link reactions, therefore the crosslink density decreases. The reduction of these characteristics are affected by two factors; (a) self accelerating effect of modifier which causes scorch time reduction as is suggested by other researchers, 12,13 and (b) less cross-link ability of the rubber which reduces curing time.…”

Section: Properties Of Nanocompositesmentioning

confidence: 89%

Thermal stability, aging properties, and flame resistance of NR‐based nanocomposite

Khanlari

Kokabi

2010

J of Applied Polymer Sci

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Polymer/clay nanocomposites have some unique properties due to combination of flame resistance and improved mechanical and thermal stability properties which are important to enhance the material quality and performance. The objective of this work was to investigate the effect of organically modified montmorillonite (org-MMT) on the thermal and flame retardant as well as hardness and mechanical properties of the nanocomposites based on the natural rubber (NR). It was shown that by the addition of 3 wt % of org-MMT to NR, its aging hardness rise was decreased more than 55% and the ignition time was delayed about 150%. The reduction in heat release rate peak value was equal to 54% compared to the pristine NR. Addition of org-MMT improved the thermal stability of the NR. Furthermore, nanocomposites which were calendared before curing showed much more thermal stability and fire resistance than those which contained similar amount of organoclay.

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“…Among these methods, two main approaches are frequently applied to determine kinetic parameters: the mechanical approach and the calorimetric approaches in isothermal or non-isothermal modes [11][12][13]. In this paper, the kinetic study was performed by using these two approaches: torque measurements by rheometer and heat flow measurements by DSC in anisothermal mode.…”

Section: Kinetic Characterizationmentioning

confidence: 99%

“…Several authors showed that cure rate and optimum cure time vary with the measurement approach [12][13][14][15]. In this study, calorimetric measurements were chosen to estimate kinetic parameters.…”

Section: Kinetic Characterizationmentioning

confidence: 99%

Experimental and modelling study of superficial elastomer vulcanization by short wave infrared radiation

Bideau

Ploteau

Dutournié

et al. 2009

International Journal of Thermal Sciences

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Influence of clay on the vulcanization kinetics of fluoroelastomer nanocomposites

Cited by 94 publications

References 30 publications

The effect of layered silicates on the crosslinking reaction of silanol‐terminated polysiloxane

The effect of layered silicates on the crosslinking reaction of silanol‐terminated polysiloxane

Thermal stability, aging properties, and flame resistance of NR‐based nanocomposite

Experimental and modelling study of superficial elastomer vulcanization by short wave infrared radiation

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