Hysteretic damping in XNBR – MWNT nanocomposites at low and high compressive strains

Sasikumar, K.; Manoj, N. R.; Mukundan, T.; Khastgir, Dipak

doi:10.1016/j.compositesb.2015.04.005

Cited by 22 publications

(5 citation statements)

References 25 publications

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“…Hence, the nanocomposite with 0.025 vf MWNT is the optimal one to get the lowest acoustic energy absorption in the frequency range of interest utilizing minimum nano filler. The trend of decreasing acoustic absorption with increase in MWNT volume fraction is in agreement with the values of tan delta obtained in the dynamic mechanical experiment also [32]. The addition of MWNT makes the composite stiffer than the neat XNBR as observed in the modulus values in DMA studies, and thereby makes it more transparent to acoustic waves even though hysteretic damping is high [33].…”

Section: Acoustic Characteristics Of Nanocompositessupporting

confidence: 87%

Effect of pristine multiwalled carbon nanotubes on tensile hysteresis in carboxylated nitrile rubber composites

et al. 2018

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This work deals with the study of effect of multiwalled carbon nanotubes (MWNT) on the tensile hysteresis behavior of carboxylated nitrile rubber composites under various cyclic strain levels (5, 25, and 300%). The presence of thermo‐labile ionic crosslinks as well as interfacial stick‐slip motion of filler in the matrix was found to enhance both Mullins effect and hysteretic damping. Hysteretic damping reached a maximum of 37% for 0.050 volume fraction of MWNT at medium strain (25%). The crosslink density measured through equilibrium swelling method revealed that the degree of ionic crosslinking decreased with increase in MWNT content, which was confirmed by infrared spectroscopy. Transmission electron microscopic images showed that agglomeration of nanotubes was prominent at higher volume fractions of MWNT. Acoustic absorption capability, as measured by the impulse method, decreased with increase in MWNT concentration. The high hysteretic damping and low acoustic absorption make the nanocomposites a superior choice for structural vibration damping in underwater acoustic sensor systems. POLYM. COMPOS., 39:E1269–E1279, 2018. © 2018 Society of Plastics Engineers

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Section: Acoustic Characteristics Of Nanocompositessupporting

confidence: 87%

Effect of pristine multiwalled carbon nanotubes on tensile hysteresis in carboxylated nitrile rubber composites

et al. 2018

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“…Nowadays, damping materials have been widely applied in the mechanical vibration field. Among the numerous damping materials, polymer composites have been extensively researched for their excellent physical and chemical properties [1,2]. However, it is a challenge to improve the damping performance without sacrificing the mechanical strength of rubber composites [3].…”

Section: Introductionmentioning

confidence: 99%

Improving the Dynamic Mechanical Properties of XNBR Using ILs/KH550-Functionalized Multilayer Graphene

et al. 2019

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Graphene has been considered an ideal nanoscale reinforced phase for preparing high-performance composites, but the poor compatibility and weak interfacial interaction with the matrix have limited its application. Here a highly effective and environmentally friendly method for the functionalization of graphene is proposed through an interaction between as-exfoliated graphene and (3-aminopropyl) triethoxysilane (KH550), in which 1-butylsulfonate-3-methylimidazolium bisulfate (BSO3HMIm)(HSO4) ionic-liquids-modified graphene was prepared via an electrochemical exfoliation of graphite in (BSO3HMIm)(HSO4) solution, then (BSO3HMIm)(HSO4)-modified graphene as a precursor was reacted with amine groups of KH550 for obtaining (BSO3HMIm)(HSO4)/KH550-functionalized graphene. The final products as filler into carboxylated acrylonitrile‒butadiene rubber (XNBR) improve the dynamic mechanical properties. The improvement in the dynamic mechanical properties of the nanocomposite mainly depends on high interfacial interaction and graphene’s performance characteristics, as well as a good dispersion between functionalized graphene and the XNBR matrix.

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“…High loading of multi-wall carbon nanotube (MWCNT) could significantly improve the damping properties of carboxylated NBR. 6 Aluminum nitride and boron nitride (BN) filled ethylene-propylene-diene rubber is a damping rubber with a tan δ value of 0.5 at 50 C. 7 Damping rubbers can absorb some vibration energy and convert the energy to heat. But most damping rubbers have low thermal conductivity, and the heat buildup inside the rubbers could negatively affect their service life in addition to the heat generated by electronic components.…”

Section: Introductionmentioning

confidence: 99%

“…Fillers can also improve the damping properties of rubbers. High loading of multi‐wall carbon nanotube (MWCNT) could significantly improve the damping properties of carboxylated NBR 6 . Aluminum nitride and boron nitride (BN) filled ethylene‐propylene‐diene rubber is a damping rubber with a tan δ value of 0.5 at 50°C 7 …”

Section: Introductionmentioning

confidence: 99%

Enhancements in damping properties and thermal conductivity of acrylonitrile‐butadiene rubber by using hindered phenol modified alumina

Dong

Jiang

Zhang

2022

J of Applied Polymer Sci

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Highly integrated electronic components used under mechanical vibration usually require the vibration‐reduction and heat‐dissipation protection from rubber composites. But it is still a challenge to simultaneously improving damping properties and thermal conductivity of rubber. Herein, hindered phenol modified alumina is prepared and filled to acrylonitrile‐butadiene rubber (NBR), leading to NBR/modified alumina composites with strong interfacial interaction. The composites exhibit superior damping properties. They have higher hysteresis ratio, damping coefficient, damping factor at 25°C, and effective damping temperature ranges than NBR and its unmodified alumina composites. The NBR/modified alumina composites also have higher thermal conductivity and lower relaxation rate than NBR and its alumina composites. The modification of alumina by the hindered phenol is an effective method for preparing NBR composites with extraordinary combination of good damping properties and high thermal conductivity. The composites have a great application potential for vibration‐reduction and heat‐dissipation protection of electronic components.

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Hysteretic damping in XNBR – MWNT nanocomposites at low and high compressive strains

Cited by 22 publications

References 25 publications

Effect of pristine multiwalled carbon nanotubes on tensile hysteresis in carboxylated nitrile rubber composites

Effect of pristine multiwalled carbon nanotubes on tensile hysteresis in carboxylated nitrile rubber composites

Improving the Dynamic Mechanical Properties of XNBR Using ILs/KH550-Functionalized Multilayer Graphene

Enhancements in damping properties and thermal conductivity of acrylonitrile‐butadiene rubber by using hindered phenol modified alumina

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