Heat dissipative mechanical damping properties of EPDM rubber composites including hybrid fillers of aluminium nitride and boron nitride

Cho, Jung Keun; Sun, Hanna; Seo, Hee Won; Chung, June-Young; Seol, Mina; Kim, Sung Hoon; Kim, Ra-Seong; Park, Inkyung; Suhr, Jonghwan; Park, Joon Chul; Jung, Heon Seob; Park, Hyun Ho; Choi, Hyouk Ryeol; Nam, Jae‐Do

doi:10.1039/c9sm02123j

Cited by 21 publications

(10 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This difference in the damping properties can be attributed to the surface modification of Al 2 O 3 and consequent strong interfacial interaction between NBR and Al 2 O 3 . Nam et al reported an aluminum nitride/BN/ethylene‐propylene‐diene rubber composite with the maximum tan δ value of 0.5 at 50°C 7 . We reported thermally conductive BIIR/BN damping material with the tan δ of 0.88 at 25°C 20 .…”

Section: Resultsmentioning

confidence: 56%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 56%

“…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

View full text Add to dashboard Cite

show abstract

“…Like in EPDM-0, (Figure 5c) the maximum heat stabilizes at third series of cycles at λ max =λ 3 (Figure 6c), but the absolute self-heating value is found to be higher. This is likely due to high viscous dissipation in presence of filler that may be due to frictional energy dissipation during interfacial sliding at the filler-filler and filler-rubber interfaces [47], [48].…”

Section: Thermal and Volumetric Strain Signatures Of Mullins Damagementioning

confidence: 99%

Heat source and voiding signatures of Mullins damage in filled EPDM

et al. 2020

View full text Add to dashboard Cite

The thermomechanical coupling of Mullins damage in filled EPDM has been investigated by analysing the self-heating via Infrared thermography (IR) and the voiding fraction by Digital Image Correlation (DIC). The volumetric strain measured during the rubber deformation is found to be predominantly associated with damage, while thermal dilatation caused by self-heating has a negligible contribution. On this basis, the thermomechanical coupling of Mullins phenomena has been identified by evaluating the strain and time dependence of the following criteria: the tangent modulus, the voiding rate and the heat sources. The tangent modulus that reaches a maximum at the strain transition from a series of cycle to another is found to be an appropriate mechanical signature of Mullin softening. At the same strain transition, both voiding rate upturn and heat source upturn are observed. These signatures suggest the Mullins damage to be mainly associated at high strain rate with the (re)-activation of dissipative cavitation mechanisms, by nucleation of new cavities and/or acceleration of cavities growth.

show abstract

“…Contrarily, at the highest strain rate, self-heating accumulates with the cycles sequence in both materials, up to a maximum value of RT + 27 • C in highly filled EPDM-80 prior to failure (Figure 7b,e). Self-heating accumulation during high strain rate cyclic loading is partly due to high viscous dissipation like interfacial sliding (friction) at the filler-rubber interfaces [47,48]. In addition, the breakage (damage) and reformation of inter-aggregate bonds have also been identified as a major heat dissipation during cyclic deformation of filled rubber [49].…”

Section: Effect Of the Strain Rate On Damage During Cyclic Loadingmentioning

confidence: 99%

Effect of the Strain Rate on Damage in Filled EPDM during Single and Cyclic Loadings

et al. 2020

View full text Add to dashboard Cite

The effect of the strain rate on damage in carbon black filled Ethylene Propylene Diene Monomer rubber (EPDM)stretched during single and multiple uniaxial loading is investigated. This has been performed by analyzing the stress–strain response, the evolution of damage by Digital Image Correlation (DIC), the associated dissipative heat source by InfraRed thermography (IR), and the chains network damage by swelling. The strain rates were selected to cover the transition from quasi-static to medium strain rate conditions. In single loading conditions, the increase of the strain rate yields in a preferential damage of the filler network while the rubber network is preserved. Such damage is accompanied by a stress softening and an adiabatic heat source rise. Conversely, increasing the strain rate in cyclic loading conditions yields in a filler network accommodation and a high self-heating whose combined effect is proposed as a possible cause of the ability of filled EPDM to limit damage by reducing cavities opening during loading, and favoring cavities closing upon unloading.

show abstract

Heat dissipative mechanical damping properties of EPDM rubber composites including hybrid fillers of aluminium nitride and boron nitride

Abstract:
As highly integrated electronic devices and automotive parts are becoming used in high-power and load-bearing systems, thermal conductivity and mechanical damping properties have become critical factors, which could be enhanced by the composites with the different-shaped hybrid fillers.

Cited by 21 publications

References 49 publications

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

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

Heat source and voiding signatures of Mullins damage in filled EPDM

Effect of the Strain Rate on Damage in Filled EPDM during Single and Cyclic Loadings

Contact Info

Product

Resources

About

Heat dissipative mechanical damping properties of EPDM rubber composites including hybrid fillers of aluminium nitride and boron nitride

Abstract: As highly integrated electronic devices and automotive parts are becoming used in high-power and load-bearing systems, thermal conductivity and mechanical damping properties have become critical factors, which could be enhanced by the composites with the different-shaped hybrid fillers.

Cited by 21 publications

References 49 publications

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

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

Heat source and voiding signatures of Mullins damage in filled EPDM

Effect of the Strain Rate on Damage in Filled EPDM during Single and Cyclic Loadings

Contact Info

Product

Resources

About

Abstract:
As highly integrated electronic devices and automotive parts are becoming used in high-power and load-bearing systems, thermal conductivity and mechanical damping properties have become critical factors, which could be enhanced by the composites with the different-shaped hybrid fillers.