Effects of Interface on the Dynamic Hysteresis Loss and Static Mechanical Properties of Illite Filled SBR Composites

Wang, Zhepeng; Zhang, Hao; Liu, Qiang; Wang, Shaojuan; Yan, Shouke

doi:10.1007/s10118-022-2791-4

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…This is because the silane coupling agent is adsorbed and grafted onto the surface of sepiolite, which can entangle with more rubber molecular chains. Additionally, during the subsequent mixing process, due to the high local temperature, −S 4 − and -SH in TESPT−Sep and MPTES−Sep were activated and combined with rubber molecular chains to form chemical bonds, producing tightly bound rubber [ 59 ]. While C=C in VTES relies only on external sulfur addition to produce chemical bonding, the amount of bonded rubber formed is less due to the lower temperature of the applied sulfur.…”

Section: Resultsmentioning

confidence: 99%

Effect of Different Silane Coupling Agents In-Situ Modified Sepiolite on the Structure and Properties of Natural Rubber Composites Prepared by Latex Compounding Method

et al. 2023

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With the increasing demand for eco-friendly, non-petroleum-based natural rubber (NR) products, sepiolite, a naturally abundant, one-dimensional clay mineral, has been identified as a suitable material for reinforcing NR through the latex compounding method. To create superior NR/sepiolite composites, three silane coupling agents with different functional groups were used to modify sepiolite in situ via grafting or adsorption during the disaggregation and activation of natural sepiolite, which were subsequently mixed with natural rubber latex (NRL) to prepare the composites. The results showed that the modified sepiolite improved the dispersion and interfacial bonding strength with the rubber matrix. VTES-modified sepiolite containing C=C groups slightly improved the performance but retarded the vulcanization of the NR composites, and MPTES and TESPT-modified sepiolites containing -SH and −S4− groups, respectively, effectively accelerated vulcanization, inducing the composites to form a denser crosslink network structure, and exhibiting excellent dynamic and static properties, such as the modulus at a 300% increase from 8.82 MPa to 16.87 MPa, a tear strength increase from 49.6 N·mm−1 to 60.3 N·mm−1, as well as an improved rolling resistance and abrasive resistance of the composites. These findings demonstrate that modified sepiolite can be used to produce high-quality NR/sepiolite composites with enhanced properties.

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Section: Resultsmentioning

confidence: 99%

Effect of Different Silane Coupling Agents In-Situ Modified Sepiolite on the Structure and Properties of Natural Rubber Composites Prepared by Latex Compounding Method

et al. 2023

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“…This occurs because the deformation process disturbs the molecules in the polymer chain which tends to rearrange and requires energy for it. During the unloading cycle, some of the stored energy is lost as heat due to the slippage and friction between the polymer chains [53]. Furthermore, in elastomers comprising solid llers, the hysteresis is commonly attributed to the Payne and Mullins effects.…”

Section: Cyclic Stress-softening and Energy Dissipation Behaviormentioning

confidence: 99%

Tuning viscoelastic properties of VHB 4910 elastomers for artificial muscles

Sahu,

Sahu

2023

Preprint

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Understanding the tunable viscoelastic behavior of dielectric elastomers for artificial muscles is important to regulate the electromechanical actuation, response time, energy density, sensitivity, duty cycle, etc. However, the performance of elastomers is well known to be regulated by varieties of filler particles, crosslinkers and plasticizers, the influences of particulate fillers on the viscoelastic behavior of VHB 4910 elastomer are yet to be recognized. In this work, a new range of particulate-polymer filled VHB elastomers are prepared to study the effects of barium titanate and Ketjenblack particles on the viscoelastic properties. This followed the experimental characterization of stress-relaxation and creep behavior to realize the time-dependent mechanical performance. Also, stress-softening and energy dissipation behavior are considered to find the number of cycles required to reach the equilibrium energy state. Significantly reduced viscoelastic properties including elastic modulus, toughness, energy density and hysteresis are recognized as a result of diminished poroelastic effects owing to the filled polymer. In contrast, the variations in stress/strain values are evidenced to depend on the interfacial free energy and size of the particulates. Theoretical comparison of these results with the mechanism of biomedical materials confirmed the feasibility of the modified elastomers in the field of artificial muscles and soft robotics. This work may help in recognizing the strategies to tune the viscoelastic behavior of VHB dielectric elastomers reliant on sets of applications.

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The effect of rubber and plastic mass ratio on the compatibilized ethylene propylene diene monomer/polypropylene TPV with shape memory behavior

Xu,

Chen,

Zong

2024

J of Applied Polymer Sci

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Thermoplastic vulcanizate (TPV) with shape memory performance showed great application potential in various fields. In this work, the effect of the mass ratio of ethylene propylene diene monomer (EPDM) and polypropylene (PP) on the performance of TPV with sea island microstructure compatibilized by magnesium maleate (MgMA) and maleic anhydride (MAH) was studied. The compatibilized TPV 70/30 and TPV 60/40 obtained good shape memory property with the shape fixity ratio (Rf) and shape recovery ratio (Rr) of 87.3%, 96.7% and 91%, 86.6% respectively. Rf increased with more PP content and decreased with more EPDM content, however Rr decreased with more PP content and increased with more EPDM content. The maximum Rf of 95.4% and the maximum Rr of 100% of TPV were obtained at the EPDM/PP mass ratio of 20/80 and 80/20 respectively. The tensile strength and elongation at break of TPV increased with more PP content in the blend. The result of DMA, Fourier transform infrared (FTIR), and SEM demonstrated the compatibility effect of MgMA and MAH on EPDM and PP interface.

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Effects of Interface on the Dynamic Hysteresis Loss and Static Mechanical Properties of Illite Filled SBR Composites

Cited by 7 publications

References 37 publications

Effect of Different Silane Coupling Agents In-Situ Modified Sepiolite on the Structure and Properties of Natural Rubber Composites Prepared by Latex Compounding Method

Effect of Different Silane Coupling Agents In-Situ Modified Sepiolite on the Structure and Properties of Natural Rubber Composites Prepared by Latex Compounding Method

Tuning viscoelastic properties of VHB 4910 elastomers for artificial muscles

The effect of rubber and plastic mass ratio on the compatibilized ethylene propylene diene monomer/polypropylene TPV with shape memory behavior

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