Assessing effects of ultraviolet ageing on the thermal properties and thermal degradation kinetics of long glass fiber‐reinforced polyamide 6 composites filled with zinc oxide

2019 ◽  
Vol 40 (12) ◽  
pp. 4597-4607
Author(s):  
Weidi He ◽  
Xincheng Guo ◽  
Na Wang ◽  
Shaopeng Chen ◽  
Xiaolang Chen ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Thermal Properties ◽  
Thermal Degradation ◽  
Glass Fiber ◽  
Degradation Kinetics ◽  
Polyamide 6 ◽  
Thermal Degradation Kinetics ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber ◽  
Kinetics Of

Thermal degradation kinetics of polyvinyl chloride in presence of zinc oxide

2021 ◽  
pp. 179105
Author(s):  
Sanad Altarawneh ◽  
Mohammad Al-Harahsheh ◽  
Chris Dodds ◽  
Adam Buttress ◽  
Sam Kingman
Keyword(s):  
Zinc Oxide ◽  
Thermal Degradation ◽  
Polyvinyl Chloride ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Kinetics Of

The influence of hygrothermal ageing on the mechanical properties and thermal degradation kinetics of long glass fibre reinforced polyamide 6 composites filled with sepiolite

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 36689-36697 ◽  
Author(s):  
Weidi He ◽  
Nian Liu ◽  
Xiaolang Chen ◽  
Jianbing Guo ◽  
Tao Wei
Keyword(s):  
Mechanical Properties ◽  
Thermal Degradation ◽  
Glass Fibre ◽  
Degradation Kinetics ◽  
Polyamide 6 ◽  
Thermal Degradation Kinetics ◽  
Hygrothermal Ageing ◽  
Glass Fibre Reinforced ◽  
Kinetics Of

In this article, the influence of relatively long hygrothermal ageing on long glass fibre reinforced polyamide 6 (LGF/PA6) composites filled with sepiolite (Sep) are analyzed.

scholarly journals Kinetics of Crystallization and Thermal Degradation of an Isotactic Polypropylene Matrix Reinforced with Graphene/Glass-Fiber Filler

Molecules ◽  
2019 ◽  
Vol 24 (10) ◽  
pp. 1984 ◽  
Author(s):  
Evangelia Tarani ◽  
George Z. Papageorgiou ◽  
Dimitrios N. Bikiaris ◽  
Konstantinos Chrissafis
Keyword(s):  
Thermal Degradation ◽  
Glass Fiber ◽  
Degradation Kinetics ◽  
Glass Fibers ◽  
Graphene Nanoplatelets ◽  
Thermal Degradation Kinetics ◽  
Linear Regression Method ◽  
Melt Mixing ◽  
Graphene Nanoplatelet ◽  
Kinetics Of

Polypropylene composites reinforced with a filler mixture of graphene nanoplatelet-glass fiber were prepared by melt mixing, while conventional composites containing graphene nanoplatelet and glass fiber were prepared for comparative reasons. An extensive study of thermally stimulated processes such as crystallization, nucleation, and kinetics was carried out using Differential Scanning Calorimetry and Thermogravimetric Analysis. Moreover, effective activation energy and kinetic parameters of the thermal decomposition process were determined by applying Friedman’s isoconversional differential method and multivariate non-linear regression method. It was found that the graphene nanoplatelets act positively towards the increase in crystallization rate and nucleation phenomena under isothermal conditions due to their large surface area, inherent nucleation activity, and high filler content. Concerning the thermal degradation kinetics of polypropylene graphene nanoplatelets/glass fibers composites, a change in the decomposition mechanism of the matrix was found due to the presence of graphene nanoplatelets. The effect of graphene nanoplatelets dominates that of the glass fibers, leading to an overall improvement in performance.

scholarly journals Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1597
Author(s):  
Iman Jafari ◽  
Mohamadreza Shakiba ◽  
Fatemeh Khosravi ◽  
Seeram Ramakrishna ◽  
Ehsan Abasi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Molecular Weight ◽  
Thermal Degradation ◽  
High Molecular Weight ◽  
Degradation Kinetics ◽  
Graphene Nanosheets ◽  
Thermal Degradation Kinetics ◽  
Graphene Nanocomposites ◽  
Kinetics Of ◽  
Ultra High Molecular Weight

The incorporation of nanofillers such as graphene into polymers has shown significant improvements in mechanical characteristics, thermal stability, and conductivity of resulting polymeric nanocomposites. To this aim, the influence of incorporation of graphene nanosheets into ultra-high molecular weight polyethylene (UHMWPE) on the thermal behavior and degradation kinetics of UHMWPE/graphene nanocomposites was investigated. Scanning electron microscopy (SEM) analysis revealed that graphene nanosheets were uniformly spread throughout the UHMWPE’s molecular chains. X-Ray Diffraction (XRD) data posited that the morphology of dispersed graphene sheets in UHMWPE was exfoliated. Non-isothermal differential scanning calorimetry (DSC) studies identified a more pronounced increase in melting temperatures and latent heat of fusions in nanocomposites compared to UHMWPE at lower concentrations of graphene. Thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) revealed that UHMWPE’s thermal stability has been improved via incorporating graphene nanosheets. Further, degradation kinetics of neat polymer and nanocomposites have been modeled using equations such as Friedman, Ozawa–Flynn–Wall (OFW), Kissinger, and Augis and Bennett’s. The "Model-Fitting Method” showed that the auto-catalytic nth-order mechanism provided a highly consistent and appropriate fit to describe the degradation mechanism of UHMWPE and its graphene nanocomposites. In addition, the calculated activation energy (Ea) of thermal degradation was enhanced by an increase in graphene concentration up to 2.1 wt.%, followed by a decrease in higher graphene content.

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