Capacitor films from biaxially oriented polypropylene (BOPP) involve intensive external stress field, resulting in special crystallization and orientation characters. However, it still …
Capacitor films from biaxially oriented polypropylene (BOPP) involve intensive external stress field, resulting in special crystallization and orientation characters. However, it still …
Capacitor films with a thickness of only 3.8 μm were prepared using industrial-largescale processing (biaxial stretching). • The addition of COC increases the lamellar thickness and decreases the molecular chain activity of PP.The high-temperature breakdown strength and charge/discharge properties of the blended film are significantly …
The use of polymer dielectrics, particularly biaxially oriented polypropylene (BOPP), has revolutionized power distribution around the world. BOPP film of sub mil thickness has …
3 · Polymer-based dielectrics, represented by biaxially oriented polypropylene (BOPP), are fundamental in energy storage capacitors within contemporary energy …
Keywords: Polypropylene Crystallization Breakdown strength 1 Introduction With the rapid development of electrical equipment and electronic devices, dielectric materials have drawn more and more attentions. For power capacitor, polypropylene (PP) is now the
3 · Polymer-based dielectrics, represented by biaxially oriented polypropylene (BOPP), are fundamental in energy storage capacitors within contemporary energy systems. Valued for low cost, high ...
Polypropylene (PP) sheets are cast with various chill roll temperatures and rates, which are studied with differential scanning calorimetry, wide angel X-ray diffraction, scanning electronic microscopy and dielectric withstand voltage test system. The results show that increasing the chill roll temperature and cast rate can promote the increase of …
TORAYFAN BO is a biaxially oriented polypropylene film by Toray Industries, Inc. It is widely used for general industrial, packaging and capacitor applications. This film is sold by Toray Advanced Film Co., Ltd. …
In this article, a method of grafting and crosslinking modification is proposed for improving the high-temperature performance of polypropylene (PP) films for metalized film capacitors based on the ultraviolet irradiation. As the insulation material of metallized film capacitor, polypropylene film fails seriously at high temperature. …
1 INTRODUCTION Biaxially-oriented polypropylene (BOPP) has become the major commercial dielectric film for decades of years, due to its high breakdown strength, low dielectric loss and cost-effective [1-3].The film …
PDF | A comparative study of biaxial-orientated polypropylene (BOPP) films extracted from one failed HVDC filter capacitor (serving for 10 years) and... | Find, read and cite all the ...
The commercial metallised biaxial orientation polypropylene (BOPP) film capacitors were used in this paper for electrothermal ageing treatment and performance experiment in magnetic fields. The basic parameters of each capacitor are listed in Table 1 .
DOI: 10.1002/app.50029 Corpus ID: 225113411 How the biaxially stretching mode influence dielectric and energy storage properties of polypropylene films @article{Xiong2021HowTB, title={How the biaxially stretching mode influence dielectric and energy storage properties of polypropylene films}, author={Jie Xiong and Xin Wang and …
DOI: 10.1049/hve2.12439 Corpus ID: 269256572 Effects of electrothermal ageing on dielectric performance of metallised biaxial orientation polypropylene film capacitors in strong magnetic fields @article{Liu2024EffectsOE, title={Effects …
This paper mainly studies the effect of different stretching ratios on the microstructure and dielectric properties of polypropylene films. Through experiments, it is found that with the increase of the stretching ratio, the grain size decreases and the crystallinity increases, and the transition from cx phase to $beta$ phase is beneficial to improve the breakdown …
Metallised polypropylene film capacitors (MPPFCs) are widely used in power electronics and are generally degraded by elevated temperatures. This work aims to determine the relationships between the structural changes of MPPFC and the microstructural ...
The addition of inorganic nanoparticles is one of the most widely studied strategies to improve dielectric properties of thin film capacitors, but its application to biaxially …
The urgent demand for next-generation high-temperature film capacitors with excellent energy storage properties originates from electrical-power applications under harsh environments. However, the state-of-the-art commercial capacitor dielectric biaxially oriented polypropylene (BOPP) suffers from a rapid de
A comparative study of biaxial-orientated polypropylene (BOPP) films extracted from one failed HVDC filter capacitor (serving for 10 years) and one fresh capacitor (spare capacitor ...
In this study, a comprehensive investigation of morphology and dielectric performance of pilot-scale BOPP nanocomposites with hexamethyldisilazane (HMDS)-treated …
A comparative study of biaxial-orientated polypropylene (BOPP) films extracted from one failed HVDC filter capacitor (serving for 10 years) and one fresh capacitor (spare capacitor ...
biaxial stretching. 1. Introduction Biaxially oriented isotactic polypropylene (BOPP) film produced by tenter frame process is the current state-of-the-art dielectric medium in both oil-impregnated film-foil capacitors and metallized film (dry) capacitors. BOPP film
Herein, we illustrate a series of biaxially orientated polypropylene (BOPP)/cycloolefin copolymer (COC) blended films with a thickness of 3.8 μm prepared by biaxial-stretching. The structural evolution from casting to biaxial stretching was investigated to assess
In this work, polypropylene (PP) film samples doped with an organic phosphorus nucleating agent under three cooling processes are examined for the effects of regulating the crystallization. The conductivity and DC breakdown strength of the film samples were tested at 25, 55 and 85 °C. The average breakdown strength with 0.01 wt% nucleating agent …
The dielectric performance of the pristine and the electrothermal-aged metallised polypropylene capacitors are investigated under different magnetic fields. The energy storage capacity decreases under the magnetic field. At 12 T, the capacitance value of the pristine ...
However, the state-of-the-art commercial capacitor dielectric biaxially oriented polypropylene (BOPP) suffers from a rapid decline in energy density and charge–discharge efficiency at elevated …
The commercial metallised biaxial orientation polypropylene (BOPP) film capacitors were used in this paper for electrothermal ageing treatment and performance experiment in magnetic …
A comparative study of biaxial-orientated polypropylene (BOPP) films extracted from one failed HVDC filter capacitor (serving for 10 years) and one fresh capacitor (spare capacitor ...
The addition of inorganic nanoparticles is one of the most widely studied strategies to improve dielectric properties of thin film capacitors, but its application to biaxially oriented polypropylene (BOPP) has rarely been reported due to the difficulty of stretching without break. Here, we have investigated dielectric properties of BOPP/TiO2 nanocomposites …