Tensile Properties and Morphology of Epoxidized Natural Rubber/Recycled Acrylonitrile-Butadiene Rubber (ENR 50/NBRr) Blends

Ahmad, Hazwani Syaza; Ismail, Hanafi; Rashid, Azura A.

doi:10.1016/j.proche.2016.03.024

Cited by 22 publications

(16 citation statements)

References 8 publications

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“…The filled epoxy system with rNR exhibited the lowest K IC value, which attributed to the poor dispersion of rNR in epoxy matrix. This may due to the presence of crosslink precursor in the rNR molecular structure . Similar trends were observed and reported at rubber contents from 5 up to 30 vol.%.…”

Section: Resultssupporting

confidence: 88%

“…The low molecular weight of LNR molecular chains are easily migrated and coalesce to form large rubber phases, whereas poor dispersion of rNR in the epoxy matrix was due to the presence of crosslink precursor in the rubber phases. Similar finding reported by other researchers, indicated that poor dispersion of recycled acrylonitrile‐butadiene rubber in the NR and ENR‐50 matrix was due to the presence of crosslink precursor . Thus, the small NR phases acted as effective energy dissipating centers within the epoxy matrix, which promoted effective load transfer from the epoxy matrix to NR phases.…”

Section: Resultssupporting

confidence: 86%

“…This is agreed by researchers who have noted that particle sizes of liquid carboxyl‐terminated butadiene‐acrylonitrile copolymer phases were larger due to low molecular weight . In addition, poor dispersion of rNR in the epoxy matrix was attributed to the presence of crosslink precursor in the rubber molecular structure . The smaller particle sizes of NR phases have contributed to the large surface area to interact with the surrounding epoxy matrix .…”

Section: Resultssupporting

confidence: 80%

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Characterization of different forms of vulcanized natural rubbers as elastomer spacer and toughening agent in two‐matrix filled epoxy/natural rubber/graphene nano‐platelets system

Kam

Teh

Osman

et al. 2018

J of Applied Polymer Sci

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This paper compares the effects of different forms of vulcanized natural rubbers on the physical, mechanical, thermal, and electrical performances of filled epoxy systems. In this study, natural rubber (NR), liquid natural rubber (LNR), and recycled natural rubber (rNR) were introduced into filled epoxy systems. The results show that flexural strength, modulus, and toughness properties of filled epoxy system were enhanced with NR phases, as compared to those with LNR and rNR. Scanning electron micrograph revealed that the particle sizes of NR phases dispersed within epoxy matrix were smaller and more uniform, as compared to those with LNR and rNR phases. Incorporation of NR phases has improved the thermal stability of filled system, followed by LNR and rNR. This is attributed to more heat energy needed to overcome good interfacial bonding between epoxy matrix and small NR phases. X‐ray diffraction analysis result showed that filled epoxy/NR/GNP system has higher 2θ values, indicated that d‐spacing in between GNP nano‐fillers has the closer distance. Electrical bulk conductivity values of filled epoxy/NR/GNP system were the highest. Small NR phases acted as elastomer spacers, which provided better “GNP packing efficiency” and realigned the GNP nano‐fillers to form more effective conductive pathways for electrons hopping. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47188.

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Section: Resultssupporting

confidence: 88%

Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 80%

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Characterization of different forms of vulcanized natural rubbers as elastomer spacer and toughening agent in two‐matrix filled epoxy/natural rubber/graphene nano‐platelets system

Kam

Teh

Osman

et al. 2018

J of Applied Polymer Sci

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“…Despite the fact that TE6040U and TE6040M have very close tensile strength values, there is a considerable improvement on the morphology. One would expect a much higher tensile strength value for the TE6040M since it usually means that this kind of healing requires more power to create a crack in the sample . In this case, it seems it is more accurate to explain the healed morphology with increasing elongation value.…”

Section: Resultsmentioning

confidence: 99%

Development of an intermediate layer for multilayer hoses used in turbo lines of motor vehicles

Ünal

Meriçboyu

2018

J of Applied Polymer Sci

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Multilayer hoses for turbo lines can be produced by ethylene acrylic rubber (AEM) as the inner layer and peroxide cured ethylene propylene diene monomer (EPDM) as the outer layer. In such a case, the polar AEM should adhere well to the apolar EPDM to ensure proper functioning. In this work, new blends were developed and optimized to offer potential for using as intermediate bonding layers. Different compositions of dipolymer AEM/EPDM and terpolymer AEM/EPDM blends with and without maleic anhydride grafted EPDM (Ma‐g‐EPDM) as a compatibilizer were successfully prepared. Curing behaviors, as well as mechanical and thermal properties of the blends were investigated in detail. The effects of the compatibilizer addition were also explored by dynamical mechanical analysis, DeMattia and scanning electron microscope. It is found that Ma‐g‐EPDM is more effective in terpolymer AEM containing blends. Additionally, 60/40:AEM/EPDM weight ratio is the most suitable proportion for turbo lines. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46525.

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“…There are almost no purely theoretical expressions for the prediction of properties. Therefore, recognizing the formulation of various elastomeric compounds and investigation of the relationship between physico-mechanical properties and their thermal behavior in the tire industry is important [5][6][7][8][9][10][11][12][13][14][15][16][17][18] . The TG-DTG technique is used in analysis of polymer materials 2,19 , and some reports are presented on identification of a series of rubber compounds that indicate the high precision and acceptable accuracy of this method 20 .…”

Section: Introductionmentioning

confidence: 99%

Prediction of Mechanical and Functional Features of Aged Rubber Composites Based on BR/SBR; Structure-Properties Correlation

Motiee

Bigdeli

2019

Mat. Res.

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V with their aging time (1 to 40 days) was demonstrated using DTG profile of uncured compounds. The correlation between these two thermal factors with aging time yielded a linear equation with an acceptable correlation coefficient (R2 ≥ 0.95). By the obtained linear model the aging time of rubber compounds based on BR / SBR was predicted. In the second step, the curing behavior and mechanical characteristics of tire tread formulation based on BR/SBR were forecasted using the aging time of compounds, without time-consuming and costly tests. In all cases, the accuracy and reproducibility of obtained data were evaluated.

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Tensile Properties and Morphology of Epoxidized Natural Rubber/Recycled Acrylonitrile-Butadiene Rubber (ENR 50/NBRr) Blends

Cited by 22 publications

References 8 publications

Characterization of different forms of vulcanized natural rubbers as elastomer spacer and toughening agent in two‐matrix filled epoxy/natural rubber/graphene nano‐platelets system

Characterization of different forms of vulcanized natural rubbers as elastomer spacer and toughening agent in two‐matrix filled epoxy/natural rubber/graphene nano‐platelets system

Development of an intermediate layer for multilayer hoses used in turbo lines of motor vehicles

Prediction of Mechanical and Functional Features of Aged Rubber Composites Based on BR/SBR; Structure-Properties Correlation

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