Piezo-absorbing effect of microwave absorbing composites with carbonyl iron particles as the filler

Zhang, Chengmao; Liu, Ting; Xu, Yonggang

doi:10.3139/146.111281

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…Many studies have sought to make rubber piezoelements. Silicon oil rubber has been the most commonly used material for piezoelements [ 6 , 7 , 8 , 9 , 10 , 11 ]. There have been a few investigations of other rubber materials: chloroprene [ 12 ], styrene-butadiene [ 13 ], acrylonitrile butadiene [ 14 ] and natural rubber [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Development of a Hybrid Piezo Natural Rubber Piezoelectricity and Piezoresistivity Sensor with Magnetic Clusters Made by Electric and Magnetic Field Assistance and Filling with Magnetic Compound Fluid

Shimada

Saga²

2017

Sensors

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Piezoelements used in robotics require large elasticity and extensibility to be installed in an artificial robot skin. However, the piezoelements used until recently are vulnerable to large forces because of the thin solid materials employed. To resolve this issue, we utilized a natural rubber and applied our proposed new method of aiding with magnetic and electric fields as well as filling with magnetic compound fluid (MCF) and doping. We have verified the piezoproperties of the resulting MCF rubber. The effect of the created magnetic clusters is featured in a new two types of multilayered structures of the piezoelement. By measuring the piezoelectricity response to pressure, the synergetic effects of the magnetic clusters, the doping and the electric polymerization on the piezoelectric effect were clarified. In addition, by examining the relation between the piezoelectricity and the piezoresistivity created in the MCF piezo element, we propose a hybrid piezoelement.

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Section: Introductionmentioning

confidence: 99%

Development of a Hybrid Piezo Natural Rubber Piezoelectricity and Piezoresistivity Sensor with Magnetic Clusters Made by Electric and Magnetic Field Assistance and Filling with Magnetic Compound Fluid

Shimada

Saga²

2017

Sensors

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“…Rubber composites filled with magnetic fillers have already been widely used in many applications because of their unique properties including good flexibility and elasticity, easy treatability, and excellent magnetic properties. 1,2 Rubber magnets can absorb shocks and sound, thus they can be applied in motor parts, memory devices, and vibration absorbers, as sensors of magnetic and electromagnetic fields, also in microwave, radar technology, and in many others. 3,4…”

Section: Introductionmentioning

confidence: 99%

Sulfur and peroxide curing of rubber magnetic composites with the application of zinc methacrylate

Kruželák

Kvasničáková

Dosoudil

et al. 2020

Journal of Elastomers & Plastics

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Rubber magnetic composites based on acrylonitrile butadiene rubber and strontium ferrite were cured with standard sulfur-based vulcanization systems as well as an organic peroxide. Zinc methacrylate (ZDMA) as a coagent was applied in both sulfur and peroxide vulcanization of rubber magnets. The aim was to evaluate the influence of ZDMA on curing characteristics and cross-link density of the prepared materials. Subsequently, physical-mechanical and magnetic properties were investigated. The results showed that ZDMA takes an active part in the cross-linking process of composites cured with an organic peroxide. Due to the presence of free radicals formed from peroxide decomposition, molecules of ZDMA polymerize into the nanostructures which can be physically adsorbed or chemically grafted onto rubber chains. Moreover, owing to zinc ions, ZDMA exhibits strong adhesion to ferrite filler and thus it contributes to the improvement of adhesion between the rubber and the filler on the interphase. The overall reinforcement of rubber magnetic composites was subsequently achieved. In the case of rubber magnets cured with the sulfur-based system, ZDMA acts as a conventional filler with a slight reinforcing effect due to the lack of free radicals required for its polymerization.

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“…Researchers have examined many materials in the search for a sensor made of rubber: silicon oil rubber [ 3 , 4 , 5 , 6 , 7 , 8 ], chloroprene [ 9 ], styrene-butadiene [ 10 ], acrylonitrile butadiene [ 11 ], nitrile butadiene rubber [ 12 ], and natural rubber (NR-latex) [ 13 , 14 , 15 , 16 ]. Shimada proposed a new sensor made of silicon-oil rubber that uses magnetic compound fluid (MCF) as filler (called MCF rubber) [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of MCF Rubber Utilizing Electric and Magnetic Fields, and Clarification of Electrolytic Polymerization

Shimada

2017

Sensors

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Many sensors require mechanical durability to resist immense or impulsive pressure and large elasticity, so that they can be installed in or assimilated into the outer layer of artificial skin on robots. Given these demanding requirements, we adopted natural rubber (NR-latex) and developed a new method (NM) for curing NR-latex by the application of a magnetic field under electrolytic polymerization. The aim of the present work is to clarify the new manufacturing process for NR-latex embedded with magnetic compound fluid (MCF) as a conductive filler, and the contribution of the optimization of the new process for sensor. We first clarify the effect of the magnetic field on the enhancement of the NR-latex MCF rubber created by the alignment of magnetic clusters of MCF. Next, SEM, XRD, Raman spectroscopy, and XPS are used for morphological and microscopic observation of the electrolytically polymerized MCF rubber, and a chemical approach measuring pH and ORP of the MCF rubber liquid was used to investigate the process of electrolytic polymerization with a physical mode. We elucidate why the MCF rubber produced by the NM is enhanced with high sensitivity and long-term stability. This process of producing MCF rubber by the NM is closely related to the development of a highly sensitive sensor.

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Piezo-absorbing effect of microwave absorbing composites with carbonyl iron particles as the filler

Cited by 4 publications

References 25 publications

Development of a Hybrid Piezo Natural Rubber Piezoelectricity and Piezoresistivity Sensor with Magnetic Clusters Made by Electric and Magnetic Field Assistance and Filling with Magnetic Compound Fluid

Development of a Hybrid Piezo Natural Rubber Piezoelectricity and Piezoresistivity Sensor with Magnetic Clusters Made by Electric and Magnetic Field Assistance and Filling with Magnetic Compound Fluid

Sulfur and peroxide curing of rubber magnetic composites with the application of zinc methacrylate

Enhancement of MCF Rubber Utilizing Electric and Magnetic Fields, and Clarification of Electrolytic Polymerization

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