Synthesis, characterization and microwave characteristics of ATP/BaFe12O19/PANI ternary composites

Bai, Dezhong; Li, Congcong; Chen, Nali; Tan, Lin; Qiu, Jianhui

doi:10.1016/j.jmmm.2017.12.101

Cited by 15 publications

(4 citation statements)

References 55 publications

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“…According to transmission line theory, the RL of samples is calculated by using the following equations, where is the input impedance at free space, is the characteristic impedance of free space which is 377 Ω, is the frequency of microwave, is the velocity of electromagnetic waves, and is the thickness of the microwave absorber. this study are substantially lower than that of pure samples synthesized by sol-gel method reported in the literature [5,10,[15][16][17]27,44]. Also, the pure BaM samples with thickness of 2 mm given in these reported studies display a maximum absorption at the frequency range of X and P Band (8.2 -12.4 GHz).…”

Section: Microwave Analysiscontrasting

confidence: 59%

“…GHz) [12,16]. In addition, is a well-known hard magnetic material which has large coercivity, high saturation magnetization as well as high resistance and good chemical stability [7,9,17]. However, absorbers have disadvantages such as narrow absorption bandwidth, low dielectric loss and poor impedance matching, which reduces the microwave absorbing performance [9,13].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic and Microwave Absorption Properties of Barium Hexaferrites synthesized by sol-gel method with addition of PMMA in various ratios

Gökçe

2024

Preprint

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The M-type barium hexaferrite (\(\text{B}\text{a}{\text{F}\text{e}}_{12}{\text{O}}_{19}\)) nanoparticles were synthesized by polymethylmethacrylate (PMMA) assisted sol-gel process. PMMA was used as a template at \(\text{P}\text{M}\text{M}\text{A}/\text{B}\text{a}{\text{F}\text{e}}_{12}{\text{O}}_{19}\) weight ratio of 20/80, 40/60, 60/40% in the synthesis. The X-Ray Diffraction (XRD) and scanning electron microscopy (SEM) have been used to determine the structural, compositional and morphological features of particles. DC magnetic properties have been measured by using electron spin resonance (ESR) spectrometer and vibrating sample magnetometry (VSM) at room temperature. The dielectric, magnetic and microwave properties were studied by reflection/transmission technique in the coaxial waveguide at the frequency range of 2–18 GHz. The results show that the nanorod nanoparticles are ~ 200 nm in length and ~ 40–50 nm in width for the sample with \(\text{P}\text{M}\text{M}\text{A}/\text{B}\text{a}{\text{F}\text{e}}_{12}{\text{O}}_{19}\) weight ratio of 20/80. The minimum reflection loss value of rod-shaped nanoparticles achieves ~ -50 dB with bandwidth of 2.25 GHz at -20 dB.

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Section: Microwave Analysiscontrasting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Magnetic and Microwave Absorption Properties of Barium Hexaferrites synthesized by sol-gel method with addition of PMMA in various ratios

Gökçe

2024

Preprint

View full text Add to dashboard Cite

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“…For the BaFe12O19 xerogel prepared by TPGM and MPGM and sintered at different temperatures, four obvious characteristic peaks at 3441, 1631, 561 and 428 cm -1 can be observed. The characteristic peaks at 3441, 1631, 561 and 428 cm -1 can be ascribed to the H-O stretching vibration of adsorbed water, the H-O-H bending vibration of adsorbed water, the Fe-O4 and Fe-O6 bending vibrations, respectively [31][32][33][34][35][36][37]. For the BaFe12O19 nano -pigments prepared by TPGM (Fig.…”

Section: Ftir Analysismentioning

confidence: 96%

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe<sub>12</sub>O<sub>19</sub> Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

Wang

Chen

Gao

et al. 2021

JNanoR

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Barium hexaferrite (BaFe12O19) nano- pigment is a pigment with high near infrared reflection in the wavelength range of 1400-2500 nm. The BaFe12O19 nano- pigments were synthesized by the traditional and modified polyacrylamide gel method and characterized by thermogravimetric and differential scanning calorimetry (TG-DSC) analyses, X-ray powder diffraction (XRD), fourier transform infrared (FTIR), transmission electron microscopy (TEM), and UV-Visible spectrophotometer. The physicochemical properties of BaFe12O19 nanopigments are strongly dependent on the synthesis route. The introduction of carbon particles into the BaFe12O19 precursor accelerates the formation of BaFe12O19 phase, reduces its particle diameter and changes its color properties. The modified polyacrylamide gel method makes it possible to obtain a high efficient near infrared reflection BaFe12O19 nano- pigments with a solar reflectance SR>90%. The high near infrared reflection makes BaFe12O19 nano- pigments have potential applications in the field of heat shielding.

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“…Several clay minerals have been widely studied to improve the mechanical properties of polymeric matrices, such as montmorillonite (Rodrigues Passos Severino et al, 2019;Passer et al, 2013a;2013b;Barbalho, 2012;Bai et al, 2018), halloysite (Bertolino et al, 2020;Lisuzzo et al, 2020;Alam et al, 2020), sepiolite (Ferrari et al, 2017;Kim et al, 2020;Fernández-Barranco et al, 2020;Wang et al, 2020;Sun et al, 2020;Di Credico et al, 2019) and attapulgite (palygorskite) (da Silva et al, 2020;Tian et al, 2020;Yang et al, 2020;Elbassyoni et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A Brief Review of the Latest Advances of Attapulgite as a Reinforcing Agent in Polymer Matrix Nanocomposites

Silva¹,

Souza²,

Morgado³

et al. 2021

American Journal of Engineering and Applied Sciences

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The development of polymeric nanocomposites using clay minerals as a Nano filler is of great interest to researchers and industry. Many clay minerals are used to modify the properties of the polymers; this strategy improves the thermal and mechanical performance and changes the surface finishing and the processing characteristics. The Attapulgite (ATP), which is a clay mineral of the hydrated magnesium silicates family, has gained prominence in recent years because it combines low cost and high performance. It has a large surface area, strong absorption capacity superior to any other natural mineral, good mechanical resistance and thermal stability. These properties make ATP an ideal candidate for reinforcing polymeric materials. Different approaches and emerging technologies have been applied to improve the thermal and mechanical properties of polymer/ATP nanocomposites which can extend the different chemical treatments used in ATP. Therefore, this review article presents the latest advances related to the use of ATP in the development of polymeric nanocomposites, showing future perspectives for new trends in ATP applications. In general, ATP modifies the mechanical properties of polymers, either in the natural or modified state. And is a good alternative for the replacement of lamellar clays such as montmorillonites with the advantage of having a lower cost and a wide world market to be explored, that which drive new trends in applications for ATP, such as flame retardant of cotton fabrics, dye adsorption, hydrogel membranes for wound dressing, sustainable packaging and fuel cell applications.

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Synthesis, characterization and microwave characteristics of ATP/BaFe12O19/PANI ternary composites

Cited by 15 publications

References 55 publications

Magnetic and Microwave Absorption Properties of Barium Hexaferrites synthesized by sol-gel method with addition of PMMA in various ratios

Magnetic and Microwave Absorption Properties of Barium Hexaferrites synthesized by sol-gel method with addition of PMMA in various ratios

A Comparative Study on the Phase Structure, Optical and NIR Reflectivity of BaFe<sub>12</sub>O<sub>19</sub> Nano-Pigments by the Traditional and Modified Polyacrylamide Gel Method

A Brief Review of the Latest Advances of Attapulgite as a Reinforcing Agent in Polymer Matrix Nanocomposites

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