Thermally stable polyimide nanocomposite films from electrospun BaTiO3 fibers for high-density energy storage capacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 44749-44755 ◽  
Author(s):  
Yun-Hui Wu ◽  
Jun-Wei Zha ◽  
Zhi-Qiang Yao ◽  
Fang Sun ◽  
Robert K. Y. Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Dielectric Properties ◽  
Dispersion Polymerization ◽  
Composite Films ◽  
High Density ◽  
Nanocomposite Films ◽  
Thermally Stable ◽  
Polyimide Nanocomposite ◽  
Polymerization Method

PI composite films with electrospun BT fibers were fabricated using the in situ dispersion polymerization method. The microstructures, thermal and dielectric properties of the BT fibers and composite films were investigated.

Enhancement of thermal stability and energy storage capability of flexible Ag nanodot/polyimide nanocomposite films via in situ synthesis

2020 ◽  
Vol 8 (36) ◽  
pp. 12607-12614 ◽  
Author(s):  
Shuang Xing ◽  
Zhongbin Pan ◽  
Xiaofeng Wu ◽  
Hanxi Chen ◽  
Xujiao Lv ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Filler Content ◽  
Composite Films ◽  
In Situ Synthesis ◽  
Nanocomposite Films ◽  
Discharge Energy ◽  
Polyimide Nanocomposite ◽  
Discharge Energy Density

Composite films with an ultralow filler content of 0.1 vol% Ag-NDs exhibit an excellent high-temperature discharge energy density of 2.56 J cm−3, together with efficiency exceeding 80% at a temperature of 150 °C.

Effect of Content and Layer Thickness on the Corona-Resistance of PI/TiO2 Nanocomposite Films

2013 ◽  
Vol 395-396 ◽  
pp. 133-137
Author(s):  
Xing Zhao ◽  
Jin Hua Yin ◽  
Rong Jin ◽  
Jin Yu Dong
Keyword(s):  
Dispersion Polymerization ◽  
Composite Films ◽  
Nanocomposite Films ◽  
Tio2 Content ◽  
Nano Tio2 ◽  
Tio2 Particles ◽  
Layer Composite ◽  
Different Content ◽  
Corona Resistance

Polymer/TiO2 nanocomposite films have good mechanical, electrical and thermal property, which are applied to electrical engineering and microelectronic technique field extensively. Nano-TiO2 has bigger permittivity and better absorption ultraviolet. The PI/TiO2-PI-PI/TiO2 three layer composite films (30mm) with different content and interlayer thickness were prepared via in-situ dispersion polymerization in this paper. And the films with A (5mm), B (10mm) and C (15mm) interlayer PI thickness are divided into three different series. The results show that inorganic TiO2 nanoparticles are well dispersed in the polymer matrices. And the structures of three layers are obvious. The doped nanoparticles don’t affect the imidization of PI matrix in composite films. The time-to-breakdown of all series films increases with the TiO2 content increasing, in which the B series films possess the best performance. Besides, the B series films with 4% doping content are tested with the longest time-to-breakdown, which is three times more than that of pure PI. After corona aging, there are lots of TiO2-particles with the ability of absorbing UV accumulated on the surface of films, playing the role in shielding electric field, which is one factor resulting in improvement of corona-resistance in the composite films.

Microstructure and electrical properties in three-component (Al2O3–TiO2)/polyimide nanocomposite films

2010 ◽  
Vol 25 (12) ◽  
pp. 2384-2391 ◽  
Author(s):  
Jun-Wei Zha ◽  
Ben-Hui Fan ◽  
Zhi-Min Dang ◽  
Sheng-Tao Li ◽  
George Chen
Keyword(s):  
Glass Transition ◽  
Loss Factor ◽  
Breakdown Strength ◽  
In Situ Polymerization ◽  
Composite Films ◽  
Inorganic Nanoparticles ◽  
Nanocomposite Films ◽  
Proposed Model ◽  
Polyimide Nanocomposite

Polyimide (PI)-matrix composite films containing inorganic nanoparticles (nano-Al2O3 and nano-TiO2) have been fabricated. A proposed model is used to explain different structures of the (Al2O3–TiO2)/PI (ATP) films synthesized by employing in situ polymerization. Dependences of dielectric permittivities of the ATP films on frequency and temperature were studied. Results show the breakdown strength of the films decreases with prolonging the corona aging time. The incorporation of the nano-Al2O3 and nano-TiO2 particles significantly improves the corona resistance of the films. The corona aging also influences the infrared absorbance, the glass transition temperature (Tg), and loss factor (tanδ) of the ATP films.

Effect of BaTiO3 nanowires on dielectric properties and energy storage density of polyimide composite films

2015 ◽  
Vol 41 (10) ◽  
pp. 13582-13588 ◽  
Author(s):  
M. Wang ◽  
W.L. Li ◽  
Y. Feng ◽  
Y.F. Hou ◽  
T.D. Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Dielectric Properties ◽  
Composite Films ◽  
Energy Storage Density ◽  
Storage Density

scholarly journals PDMS-Au/Ag Nanocomposite Films as Highly Sensitive SERS Substrates

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1060 ◽  
Author(s):  
Attila Bonyár ◽  
Zsanett Izsold ◽  
Alexandra Borók ◽  
István Csarnovics ◽  
László Himics ◽  
...  
Keyword(s):  
Nitrate Solution ◽  
Composite Films ◽  
Silver Nitrate Solution ◽  
Nanocomposite Films ◽  
Chloroauric Acid ◽  
Technological Parameters ◽  
Simple Method ◽  
Sers Substrates ◽  
Gold Silver

Polydimethylsiloxane (PDMS)–gold/silver nanoparticle composite films were synthetized in situ by using a simple method, which is based on the reduction of chloroauric acid (HAuCl4) or silver nitrate solution (AgNO3) by the PDMS membrane. A method to monitor the development of the plasmonic absorbance peak in situ (during the synthesis of the nanoparticles) is introduced in order to provide a convenient way to investigate the effect of the technological parameters on the position of the resulting peak. The resulting composite films were tested as SERS substrates at two excitation wavelengths (488 nm, 785 nm) and the preliminary results indicate that they are promising candidates for this application, with high sensitivities accompanied by cheap fabrication costs.

scholarly journals Effects of the Particle Size of BaTiO3 Fillers on Fabrication and Dielectric Properties of BaTiO3/Polymer/Al Films for Capacitor Energy-Storage Application

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 439 ◽  
Author(s):  
Lulu Gu ◽  
Tao Li ◽  
Yongjun Xu ◽  
Chenghua Sun ◽  
Zhenyu Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Dielectric Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Large Scale ◽  
Composite Films ◽  
Major Influence ◽  
Energy Storage Application ◽  
Dielectric Performance ◽  
Silane Coupling

BaTiO3/polymer/Al (BPA) composite films for energy storage were fabricated by way of a roll coating and thermal curing process. The coating slurry consisted of silicon-containing heat-resistant resin (CYN-01) and BaTiO3 particles with various particle sizes obtained from commercial BaTiO3 powders processed at different durations of wet sand grinding in the presence of silane coupling agent (KH550), which not only improves the dielectric performance of the BPA films but also facilitates its production in a large scale. The major influence factors, such as the ratio between BaTiO3 and resin and the size of BaTiO3 particles, were investigated and their related mechanisms were discussed. The results show that modifying BaTiO3 particles (D90 = 0.83 μm) with the silane coupling agent of KH550 enhances the dielectric properties of the BPA films. The typical BPA films obtained exhibit a high dielectric constant of 32, a high break strength of 20.8 V/μm and a low dielectric loss of 0.014. The present work provides a simple and convenient way to prepare high-quality ceramic/polymer composite films for energy-storage application in a large scale.

In Situ Fabrication of Flexible, Thermally Stable, Large-Area, Strongly Luminescent Copper Nanocluster/Polymer Composite Films

2017 ◽  
Vol 29 (23) ◽  
pp. 10206-10211 ◽  
Author(s):  
Zhenguang Wang ◽  
Yuan Xiong ◽  
Stephen V. Kershaw ◽  
Bingkun Chen ◽  
Xuming Yang ◽  
...  
Keyword(s):  
Polymer Composite ◽  
Composite Films ◽  
Thermally Stable ◽  
Large Area ◽  
In Situ Fabrication

Synthesis of High Density Insensitive Energetic Tetraazapentalene Derivatives

1995 ◽  
Vol 418 ◽  
Author(s):  
M. L. Trudell ◽  
G. Subramanian ◽  
G. Eck ◽  
J. H. Boyer
Keyword(s):  
High Density ◽  
Thermally Stable ◽  
Carbonyl Derivatives ◽  
Hammer Blow

AbstractAn improved nitration procedure has been developed for the synthesis of y-Tacot (3). The synthesis of y-DBBD (8) has been completed in three steps from 3 in 37% yield. y-DBBD (8) was found to be thermally stable up to 274 °C (decomposed) and insensitive to impact (hammer blow). Nitration of z-BDDB (6) and y-DBBD (8) gave carbonyl derivatives resulting from in situ hydroysis/oxidation of the corresponding tetranitro derivatives z-TBBD (7) and y-TBBD (9), respectively.

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