Polypropylene nanocomposite for power equipment: a review

Cheng, Lu; Chi, Xiaohong; Yan, Chenyu; Xie, Dong; Liu, Xiaowei; Wen, Yinian; Liu, Wenfeng; Li, Shengtao

doi:10.1049/iet-nde.2018.0005

Cited by 42 publications

(34 citation statements)

References 117 publications

(198 reference statements)

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“…The theoretical maximum specific energy that can be imparted per cycle has been predicted to be 1300‐1700 J/kg for NR and acrylic elastomers 10,36,60‐174 that match up with high possible stain. However it is not generally accepted to maximize the stability of the film 10, 78–175 …”

Section: Electromechanical Transduction In Desmentioning

confidence: 99%

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Khan

Hayat

et al. 2021

Intl J of Energy Research

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In recent 20 years, electronic equipment has been developing rapidly in the direction of light, miniaturization, flexibility, and integration. It is urgent to meet the needs of matching energy supply system to solve the practical application requirements in the fields of intelligent communication and mobile medical treatment. Electroactive polymers (EAPs) are recommendable material for manifesting muscle-like actuation. The dielectric elastomers (DEs) obtained from the EAPs are quite capable of inducing electrical energy and transmute it into mechanical energy. DEs are capacitors covered by an outer elastic membrane, sandwiched between the two docile electrodes. In the beginning, for getting the efficient responses out of the DE actuators, the material requirements and electromechanical principal are applied. Viscoelastic damping, low dielectric loss, stretch ability, and dielectric permittivity are the desirable characteristics that we are expecting in a polymer. In the current research, we are going to adopt the sequential approach by describing the advances, challenges, and applications of DEAs in the coming future.

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Section: Electromechanical Transduction In Desmentioning

confidence: 99%

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Khan

Hayat

et al. 2021

Intl J of Energy Research

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“…Dielectric capacitors with high electric energy density have been developed and investigated for a number of modern flexible electronic devices and large-scale electrical power grid systems. − With advance in miniaturization of these devices and systems, it is highly desirable to improve the electric energy density of the dielectric materials. The electric energy density ( U e ) of the material can be obtained using U e = 0.5ε 0 ε r E b 2 , where ε r is dielectric constant, that is, electric field independent, and E b is the breakdown strength. ,, Recent years have witnessed extensive efforts to address this issue through improving these two key performance parameters to enhance the electric energy density of capacitors.…”

Section: Introductionmentioning

confidence: 99%

Tuning Conformational H-Bonding Arrays in Aromatic/Alicyclic Polythiourea toward High Energy-Storable Dielectric Material

et al. 2019

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Polythioureas (PTUs) have been investigated as a dielectric material for an energy-storable capacitor in both experimental and computational approaches. However, the effect of dipolar polarization, closely associated with conformational H-bonding arrays, on dielectric properties under the operating frequency has never been studied in PTUs. Here, a series of PTUs with different spacers and additional dipoles are synthesized to explore the influence of conformations in thiourea units on their dielectric properties. The additional dipolar substituent (−COOH) contributes to a high dielectric constant, while accompanying a remarkable dielectric loss. Alternatively, a random copolymer is prepared to adjust the −COOH content, which displays a high dielectric constant and a suppressed dielectric loss. However, it requires strict control of the segmental ratio to meet the energy-storage demand. A neat alicyclic PTU with a flexible cyclohexyl spacer also exhibited a high dielectric constant and a low dielectric loss because of its rich trans/trans conformation, which brings about an increasing effective dipole moment per unit volume. Meanwhile, it retains high breakdown strength, thus leading to high electric energy density (U e ≈ 10 J/cm 3). These results suggest that tuning conformational H-bonding arrays based on molecular design is a more effective way to improve the dielectric properties of PTUs toward a very high energy storable material.

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“…Thus, it has been utilized in a broad range of applications, like medical components, reusable water bottles, luggage, outdoor furniture, plastic containers, and car parts. Since polypropylene can enable the synthesis of electrospun nanofibers bearing REA, it may be regarded as a good supporting material (Cheng et al, 2018; Nguyen et al, 2021; Norrrahim et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Authentication of documents using polypropylene immobilized with rare‐earth doped aluminate nanoparticles

Al‐Qahtani

Snari

Alkhamis

et al. 2022

Microscopy Res & Technique

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Anticounterfeiting of commercial products has been improved using photochromism as an intriguing approach. In order to develop a mechanically reliable nanocomposite, the engineering procedure of the anticounterfeiting nanocomposite must be improved. Rare-earth doped aluminate/polypropylene (REA/PP) hybrid nanofibers were successfully made by electrospinning, and they were shown to be mechanically stable and highly photoluminescent, making them ideal for anticounterfeiting applications. UV-induced photochromic anticounterfeiting properties were monitored in the synthesized nanocomposite films. In order to ensure that the REA-PP film is completely transparent, REA must be embedded into the polypropylene nanofibers in nano-sized particle shape to facilitate a better dispersion without agglomeration of REA particles in polypropylene matrix. The morphology and structure of REA were studied by transmission electron microscopy and X-ray diffraction. The morphologies and chemical contents of the polypropylene nanofibrous films were studied by scanning electron microscopy, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. The REA-PP nanofibrous film showed absorbance and emission maxima at 365 and 517 nm, respectively. When exposed to UV light, the photochromic activity of the transparent nanofibrous substrates to greenish-yellow was rapid and reversible without fatigue. Hydrophobicity of REA-PP films increased without affecting their original look or mechanical properties, while increasing the REA content. It was possible to produce ultraviolet-induced photochromic nanofibrous films that were transparent, flexible, and cost-effective. As a result of this method, numerous anticounterfeiting materials could be developed toward a better marketplace with both economy and community values. Highlights• Rare-earth aluminate/polypropylene (REA/PP) electrospun nanofibers were prepared.• The photochromic transparent nanofibers displayed green emission under UV light.• The nanofibrous films were flexible, mechanically stable and highly luminescent.• Films showed absorbance and emission maxima at 365 and 517 nm, respectively.• Hydrophobicity was improved without affecting the films original properties.

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Polypropylene nanocomposite for power equipment: a review

Cited by 42 publications

References 117 publications

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Tuning Conformational H-Bonding Arrays in Aromatic/Alicyclic Polythiourea toward High Energy-Storable Dielectric Material

Authentication of documents using polypropylene immobilized with rare‐earth doped aluminate nanoparticles

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