Enhanced physicomechanical performance of nitrile rubber composites by utilizing eco‐friendly natural oil as a plasticizer

Mahmoud, Doaa S; Said, Ataa; El‐Kader, Amal E. Abd; El‐Sabbagh, Salwa H.

doi:10.1002/vnl.21936

Cited by 12 publications

(6 citation statements)

References 31 publications

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“…Where Vr is regarded as a measure of the degree of crosslinking obtained by adding various antioxidant concentrations to NBR vulcanizates. 22…”

Section: Resultsmentioning

confidence: 99%

“…Where Vr is regarded as a measure of the degree of crosslinking obtained by adding various antioxidant concentrations to NBR vulcanizates. 22 As demonstrated in Figure 7, the crosslinking density of NBR/PMS composites with various content of antioxidants was significantly decreased compared with NBR/TMQ. It was noteworthy that the presence of PMS resulted in the lowest crosslinking density for the NBR.…”

Section: Mechanical Properties Of Nbr/pms Compositesmentioning

confidence: 86%

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Novel prepared nano potassium methyl siliconate as antioxidant for nitrile rubber

Mahmoud

Elsayed

Reffaee

et al. 2023

Polymers and Polymer Composites

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In this work, novel potassium methyl siliconate (PMS) was employed as a new nano-type antioxidant for acrylonitrile-butadiene rubber (NBR). NBR/PMS composites were produced by incorporating various contents of the prepared compound as anti-ageing agents (PMS) to improve the heat resistance of these composites. Potassium methyl siliconate (PMS) was prepared, and its chemical structure was confirmed by different elemental analyses. The curing properties, filler dispersion, thermo-oxidative ageing test, mechanical properties, FTIR, and TGA of the NBR/PMS composites were evaluated. It was detected by TEM images of PMS. The particles had a rhombic shape, and the particle size ranged from 1.23 nm to 7.84 nm. PMS could successfully promote the interfacial interaction between rubber and filler and the uniform dispersion of silica particles into the NBR matrix. As a result, the mechanical characteristics of the NBR/PMS composites were significantly improved, and they were superior to those of the NBR/TMQ composites with similar filler contents. Furthermore, the crosslinking density of the NBR composites was reduced after adding PMS (an antioxidant), which had a great effect on the mechanical properties. The results exhibited that PMS dramatically enhanced the solvent extraction resistance and the thermo-oxidative ageing resistance of NBR/silica composites more efficiently than TMQ. Overall, this work extended the application scope of PMS to develop novel and effective antioxidants for elastomers.

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“…Where Vr is regarded as a measure of the degree of crosslinking obtained by adding various antioxidant concentrations to NBR vulcanizates. 22…”

Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties Of Nbr/pms Compositesmentioning

confidence: 86%

Novel prepared nano potassium methyl siliconate as antioxidant for nitrile rubber

Mahmoud

Elsayed

Reffaee

et al. 2023

Polymers and Polymer Composites

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“…The enhancement of the stress may be attributed to the reinforcing effect of treated Cu-alloy domains in the SR matrix and its strong interaction, which successfully inhibited the motion of polymer chains. 28 (Figure 6)…”

Section: Tensile Mechanical Propertiesmentioning

confidence: 99%

Rheometeric, ultrasonic and acoustical shielding properties of Cu-alloy/silicone rubber composites for electronic applications

Mahmoud

El‐Sabbagh

El-Basheer

et al. 2023

Journal of Thermoplastic Composite Materials

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Silicone rubber (SR) is a highly adaptable material that is attractive for a variety of applications, including electronics, construction, and aerospace. In general, adding Cu-Al-Zn alloy to the SR matrix improved the mechanical properties of rubber composites and noise attenuation. The mechanical, magnetic, ultrasonic, and acoustic characteristics of the resulting SR-composites were characterized. According to variations in treated Cu-alloy loading, ultrasonic measurements were performed as the ultrasonic velocities, Poisson’s ratio, Young’s modulus, acoustic impedance, ultrasonic attenuation coefficient, and micro-hardness. Results indicated that adding treated Cu-alloy to SR-composites improves them significantly. They showed that curing time decreases gradually, tensile strength increases constantly and elongation at break of SR-composites has maximum value at 15% treated Cu-alloy. The coupling agent 3-(Trimethoxysilyl) propyl methacrylate (TMSPM) improves the mechanical properties of the composites by forming a network structure in the SR matrix and enhancing the interfacial interaction between the Cu-alloy and the SR matrix. The acoustic sound absorption coefficient, reflection coefficient, and damping factor calculations were studied in addition to the decibel drop ranging from 0.4–4.9 dB. The composite sample SR-4 is considered to have the optimal percentage of the selected acoustic properties studied. Thus, the shielding efficiency of SR-composite increased with increasing content of Cu-alloy which makes it applicable in ear plugs and electronic applications.

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“…There are many methods to improve the performance of rubber, such as modification in the synthesis and processing progress, blending with plastic and other rubbers, 5 adding additives [6][7][8] and nanofillers. [9][10][11] Among the methods, the application of nanofillers in rubber has received widespread attention.…”

Section: Introductionmentioning

confidence: 99%

Polydopamine in‐situ polymerized on graphene oxide for nitrile butadiene rubber with high strength, elasticity and aging resistance

Wan,

Du,

Guo

et al. 2023

Polymer Composites

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The elasticity and aging resistance of nitrile butadiene rubber (NBR) will be reduced by reinforced filler. Herein, we report that polydopamine (PDA) polymerized in situ on graphene oxide (GO) to obtain polydopamine‐graphene oxide (PDA‐GO) nanofiller for simultaneously improving strength, elasticity and thermal oxidative aging‐resistant performance of NBR. The structure, composition and morphology of PDA‐GO and NBR composites were characterized. The effect of PDA‐GO on the performance of NBR was investigated. Results show that PDA microspheres improved the dispersion of GO in matrix. With incorporation 3 phr of PDA‐GO, the tensile strength of NBR raised from 3.8 to 9.2 MPa. It is satisfactory that the elasticity is also improved significantly. PDA‐GO/NBR composite equips better thermal oxidative stability and aging resistance. The tensile strength of 3 phr‐PDA‐GO/NBR after aging is even 3.4 MPa higher than that of unfilled NBR before aging. Our work proposes an insight for the manufacture of rubber composites with high strength, elasticity and aging resistance.Highlights GO modified by PDA is prepared via an in‐situ polymerization process. In situ polymerized PDA microspheres greatly promotes the dispersion of GO in NBR matrix. NBR filled with PDA‐GO shows a superior strength and elasticity simultaneously. PDA‐GO endows NBR with prominent performance in aging resistance.

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Enhanced physicomechanical performance of nitrile rubber composites by utilizing eco‐friendly natural oil as a plasticizer

Cited by 12 publications

References 31 publications

Novel prepared nano potassium methyl siliconate as antioxidant for nitrile rubber

Novel prepared nano potassium methyl siliconate as antioxidant for nitrile rubber

Rheometeric, ultrasonic and acoustical shielding properties of Cu-alloy/silicone rubber composites for electronic applications

Polydopamine in‐situ polymerized on graphene oxide for nitrile butadiene rubber with high strength, elasticity and aging resistance

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