Improving the thermal properties of fluoroelastomer (Viton GF-600S) using acidic surface modified carbon nanotube

Heidarian, Javad; Hassan, Aziz; Rahman, Nor Mas Mira Abd

doi:10.1590/0104-1428.2044

Cited by 15 publications

(5 citation statements)

References 29 publications

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“…Studies have shown that nano-composites containing nano-fillers in very low concentrations (1-8 phr) have much better thermal stability than standard products. Layered silicates, graphene, and carbon nanotubes are popular research topics of many scientific studies [11][12][13][14]. Ho and co-workers have shown that the use of modified montmorillonite or carbon nanofibers as fillers in thermoplastic polyurethane elastomers (TPU) significantly reduces the flammability of the final products.…”

Section: Introductionmentioning

confidence: 99%

Cross-Linking Characteristics, Morphology, Dynamics, and Mechanical and Thermal Properties of Polychloroprene/Polybutadiene/Nano-Zinc (CR/BR/nZn) Compositions with Reduced Fire Hazard

Smejda-Krzewicka,

Rybiński,

Żukowski

et al. 2023

Materials

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The properties of unconventional blends of crystallizable and thermo-cross-linkable polychloroprene (CR) with polybutadiene (BR) were investigated in this study. The compositions were prepared using the method of reactive processing and cross-linking in the presence of nano-sized zinc (nZn). The purpose of the research was to assess the efficacy of nano-zinc as a curing agent of polychloroprene and polybutadiene (CR/BR) composites and to obtain rubber goods characterized by increased flame resistance. The blends were filled with nano-silica (aerosil) and fillers of natural origin (chalcedonite or silitin). The cross-linking process was characterized by determining the kinetics curves, the equilibrium swelling, and the Mooney–Rivlin elasticity constants. The morphology of the vulcanizate surface was specified by scanning electron microscopy (SEM). The dynamic and mechanical properties, flammability, and toxicity of gaseous substances involved in thermal decomposition were determined. Mass changes and thermal effects were studied using simultaneous thermal analysis (STA). It was confirmed that nano-zinc is an efficient curing agent for the polychloroprene and polybutadiene compositions, with a satisfactory degree of cross-linking (αc = 0.10, CRI = 4.11 min−1), good mechanical strength (TSb = 5 MPa), satisfactory tear resistance (Ts = 2.9 N/mm), and very high flame resistance (OI = 30%, HRRmax = 283 kW/m2). Filled products could be used as non-combustible materials, confirming the low fire hazard (1/tflashover = 3.5–6.4 kW/m2∙s). The most effective filler of the tested composites was nano-sized silica.

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Section: Introductionmentioning

confidence: 99%

Cross-Linking Characteristics, Morphology, Dynamics, and Mechanical and Thermal Properties of Polychloroprene/Polybutadiene/Nano-Zinc (CR/BR/nZn) Compositions with Reduced Fire Hazard

Smejda-Krzewicka,

Rybiński,

Żukowski

et al. 2023

Materials

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“…Intercalation of organically modifed layered silicates, for example, has a considerable impact on the thermal stability of acrylonitrile butadiene nanocomposites [1]. Te thermal stability of elastomeric nanocomposites with carbonaceous nanofller, which includes various kinds of graphene and carbon nanotubes [2][3][4][5][6][7], has been studied in the literature in recent years. Te enhancement in the thermal resistance of elastomers with the incorporation of nanofllers is largely due to the barrier efect.…”

Section: Introductionmentioning

confidence: 99%

Acrylic Rubber-Reinforced Halloysite Nanotubes/Carbon Black Hybrid Fillers for Oil Seal Applications: Thermal Stability and Dynamic Mechanical Properties

Krishnamurthy¹,

Prabu

Chinnasamy

et al. 2022

Advances in Materials Science and Engineering

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In this study, we show that adding halloysite nanotubes (HNT) to carbon black (CB)-packed acrylic rubber (ACM) composites improves their thermal properties. The thermo-oxidative stability, thermal stability, and dynamic mechanical properties of ACM composites (filled simply with 70 phr CB) and ACM hybrid composites comprising a fixed amount of CB (60 phr) and a variable amount of halloysite nanotubes (HNT) (2, 4, 6, 8, and 10 phr) were investigated. As evidenced by the oxidation induction time analysis, hybrid structures support a higher degree of antioxidation in composites reinforced with twin fillers than composites reinforced just with CB. ACM composites with dual fillers had greater breakdown temperatures (temperatures at 10% weight loss (T10) and 50% weight loss (T50)) and char residue concentration at 600°C than ACM conventional composites, according to thermogravimetric tests. The activation energy of the thermal disintegration of ACM composites, as determined by the Kissinger and Flynn–Wall–Ozawa techniques, shows that the addition of HNT improves the thermal stability of ACM composites. The storage modulus of ACM composites was increased by 79 percent at 30°C when 10 phr of black filler was replaced with 6 phr of tubular HNT, according to additional viscoelastic experiments.

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“…Viton is a terpolymer of hexafluoro-propylene, vinylidene fluoride and tetra-fluoroethylene with a cure site monomer. It is a peroxide cure, 70% fluorine FE [1,[16][17][18][19][20][21][22]. In our earlier work [1], thermal, mechanical and morphological properties of surface modified montmorillonite-reinforced viton rubber (VR) nanocomposites have been studied [1,21].…”

Section: Introductionmentioning

confidence: 99%

“…Various research works have been carried out to study structure-property relationship and the different properties (melt processing, thermal, curing properties) of VR-clay based nanocomposites. Most of VR based nanocomposites have been prepared by melt mixing process [1,[16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Synergistically Improved Physico-Mechanical Properties of Nanopolystyrene-Viton Rubber Blends

Mishra

2019

RDMS

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This research work represents the synergistic effect of nanopolystyrene (nPS) and viton rubber (VR) for the improvement in physico-mechanical properties of nPS-VR blends. The nPS were synthesized by a micro-emulsion process and then 0.5 to 2.5wt.% of nPS were reinforced into VR on a two roll mill followed by compression moulding. Physico-mechanical (tensile strength, elongation at break and young's modulus, swelling index) properties of nPS-VR blends were studied. The extent of nPS dispersion in the VR matrix and their surface morphology were observed by scanning electron microscopy, while the crystallinity and curing rate were studied by X-ray diffractometer and mooney viscometer, respectively. Optimum amount (2.5wt%) of nPS in VR blend showed an increment of 30% in tensile strength, 89% in young's modulus and 6% in hardness, decrement of 29% in elongation at break and 36% in swelling index as compared to pristine VR. The improvement in physico-mechanical properties was due to crosslinks of nPS in VR by curing agent, the uniform dispersion and incorporating network of nPS in the VR blend.

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Improving the thermal properties of fluoroelastomer (Viton GF-600S) using acidic surface modified carbon nanotube

Cited by 15 publications

References 29 publications

Cross-Linking Characteristics, Morphology, Dynamics, and Mechanical and Thermal Properties of Polychloroprene/Polybutadiene/Nano-Zinc (CR/BR/nZn) Compositions with Reduced Fire Hazard

Cross-Linking Characteristics, Morphology, Dynamics, and Mechanical and Thermal Properties of Polychloroprene/Polybutadiene/Nano-Zinc (CR/BR/nZn) Compositions with Reduced Fire Hazard

Acrylic Rubber-Reinforced Halloysite Nanotubes/Carbon Black Hybrid Fillers for Oil Seal Applications: Thermal Stability and Dynamic Mechanical Properties

Synergistically Improved Physico-Mechanical Properties of Nanopolystyrene-Viton Rubber Blends

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