Understanding the reinforcing behaviors of polyaniline-modified carbonyl iron particles in magnetorheological elastomer based on polyurethane/epoxy resin IPNs matrix

Yu, Minggao; Qi, Song; Fu, Jie; Zhu, Meifang; Chen, Dong

doi:10.1016/j.compscitech.2016.12.010

Cited by 104 publications

(92 citation statements)

References 72 publications

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“…9 a–d increased with the increased of frequency at both conditions either with or without magnetic fields. In general, the results are consistent with previous findings 36 , 37 as the phenomenon occurred could be attributed to the mismatching speed between the slower movement of polymer molecular chains and the rapid shear force applied to the sheet matrix 38 . The dynamic response time of the MRE decreased with the increasing frequency resulting from the failure of the polymer molecular chain of the matrix to complete stretching and shrinking over time.…”

Section: Results Of Rheological Properties Of Mressupporting

confidence: 92%

Physicochemical characterization and rheological properties of magnetic elastomers containing different shapes of corroded carbonyl iron particles

Burhannuddin

Nordin

Mazlan

et al. 2021

Sci Rep

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Carbonyl iron particles (CIPs) is one of the key components in magnetic rubber, known as magnetorheological elastomer (MRE). Apart from the influence of their sizes and concentrations, the role of the particle’ shape is pronounced worthy of the attention for the MRE performance. However, the usage of CIPs in MRE during long-term applications may lead to corrosion effects on the embedded CIPs, which significantly affects the performance of devices or systems utilizing MRE. Hence, the distinctions between the two types of MRE embedded in different shapes of spherical and plate-like CIPs, at both conditions of non-corroded and corroded CIPs were investigated in terms of the field-dependent rheological properties of MRE. The plate-like shape was produced from spherical CIPs through a milling process using a rotary ball mill. Then, both shapes of CIPs individually subjected to an accelerated corrosion test in diluted hydrochloric (HCl) at different concentrations, particularly at 0.5, 1.0, and 1.5 vol.% for 30 min of immersion time. Eight samples of CIPs, including non-corroded for both CIPs shapes, were characterized in terms of a morphological study by field emission scanning electron microscope (FESEM) and magnetic properties via vibrating sample magnetometer (VSM). The field-dependent rheological properties of MREs were analyzed the change in the dynamic modulus behavior of MREs via rheometer. From the application perspective, this finding may be useful for the system to be considered that provide an idea to prolong the performance MRE by utilizing the different shapes of CIPs even when the material is fading.

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Section: Results Of Rheological Properties Of Mressupporting

confidence: 92%

Physicochemical characterization and rheological properties of magnetic elastomers containing different shapes of corroded carbonyl iron particles

Burhannuddin

Nordin

Mazlan

et al. 2021

Sci Rep

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“…This effect can be defined as the decrease of the storage or in-phase shear modulus with the increasing amplitude of oscillation [37]. The Payne effect is generated under a cyclic loading with small amplitude, indicating the dependence of the storage modulus on the amplitude strain [38]. The Payne effect increased with the increased stiffness of the materials, which correlated with the increasing concentration of filler materials in the composite [39].…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Particle Alignment Using Silicone Oil Plasticizer and Its Effects on the Field-Dependent Properties of Magnetorheological Elastomers

Khairi

Fatah

Mazlan

et al. 2019

IJMS

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The existing mold concept of fabricating magnetorheological elastomer (MRE) tends to encounter several flux issues due to magnetic flux losses inside the chamber. Therefore, this paper presents a new approach for enhancing particle alignment through MRE fabrication as a means to provide better rheological properties. A closed-loop mold, which is essentially a fully guided magnetic field inside the chamber, was designed in order to strengthen the magnetic flux during the curing process with the help of silicone oil (SO) plasticizers. The oil serves the purpose of softening the matrix. Scanning electron microscopy (SEM) was used to observe the surface morphology of the fabricated MRE samples. The field-dependent dynamic properties of the MREs were measured several ways using a rheometer, namely, strain sweep, frequency sweep, and magnetic field sweep. The analysis implied that the effectiveness of the MRE was associated with the use of the SO, and the closed-loop mold helped enhance the absolute modulus up to 0.8 MPa. The relative magnetorheological (MR) effects exhibited high values up to 646%. The high modulus properties offered by the MRE with SO are believed to be potentially useful in industry applications, particularly as vibration absorbers, which require a high range of stiffness.

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“…Figure 2 shows a scheme of different types of slurries, such as coagulated slurry, slightly coagulated slurryand dispersed slurry. After the curing process is performed using heat or radiation or by mixing with a catalyst, thermoset polymers are also an infusible, insoluble polymer network [56,57].…”

Section: Principle Of Polyaniline Thermoset Blends and Composites Formentioning

confidence: 99%

A review of advances in the preparation and application of polyaniline based thermoset blends and composites

2020

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For several decades, forming blend and composite of polyaniline (PANI) with insulating polymers has been a widely studied research area because of the potential applications of such blends, which have a unique combination of mechanical properties, the processability of conventional polymers and the electrical property of conducting polymers. The current review paper will emphasize PANI composites or blends with thermosetting polymer matrices. The enhanced electro-mechanical properties of the blends and composites depend on the uniform dispersion of the PANI particle in polymer matrix. Therefore, considerable studies have focused on improving the distribution of PANI particles within the thermoset matrices. In this review paper, all the parameters and conditions that influence the surface morphology and application of PANI thermoset blends and composites will be described systematically. Recent progress on PANI based thermoset system with multifunctional ternary composites research will be highlighted in this paper. Furthermore, encouraging applications of different PANI thermoset composites and blends are discussed, such as flame-retardant materials, lightning damage suppression, metal ion removal, anticorrosive coating, electromagnetic shielding, conductive adhesives, and sensing materials.

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Understanding the reinforcing behaviors of polyaniline-modified carbonyl iron particles in magnetorheological elastomer based on polyurethane/epoxy resin IPNs matrix

Cited by 104 publications

References 72 publications

Physicochemical characterization and rheological properties of magnetic elastomers containing different shapes of corroded carbonyl iron particles

Physicochemical characterization and rheological properties of magnetic elastomers containing different shapes of corroded carbonyl iron particles

Enhancement of Particle Alignment Using Silicone Oil Plasticizer and Its Effects on the Field-Dependent Properties of Magnetorheological Elastomers

A review of advances in the preparation and application of polyaniline based thermoset blends and composites

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