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To match the increasing miniaturization and integration of electronic devices, higher requirements are put on the dielectric and thermal properties of the dielectrics to overcome the problems of delayed signal transmission and heat accumulation. Here, a 3D porous thermal conductivity network is successfully constructed inside the polyimide (PI) matrix by the combination of ionic liquids (IL) and...
Polyimides (PIs) are widely used in circuit components, electrical insulators, and power systems in modern electronic devices and large electrical appliances. Electrical/mechanical damage of materials are important factors that threaten reliability and service lifetime. Dynamic (self‐healable, recyclable and degradable) PIs, a promising class of materials that successfully improve electrical/mechanical...
High-permittivity (high-k) materials play a key role in advanced electronics and electrical power systems. How to prepare the flexible material with high permittivity and low dielectric loss turns out to be a hard work due to the essential low permittivity of polymers. In this work, a kind of ductile polymer-based composites was fabricated by incorporating ionic liquids into polymer matrices. The...
Nano size semiconducting particles are the most commonly used fillers in field grading material to homogenize the inner electric field distribution. In this work, commercially purchased WS2 and the exfoliated ones were used as filler into EPDM to fabricate WS2/EPDM composites with different WS2 loading. Nonlinear electric conductivities were measured at 25 50 and 80 respectively. The influence of...
Polymer matrix nanocomposites with high permittivity attract more and more attention due to their flexibility, easy processing, low cost and wide applications of electronic industry. However, the permittivity of the majority of polymers are quite low. The most effective method is combining polymers and high-permittivity inorganic ceramics (such as TiO2, barium titanate, lead zirconate titanate and...
With the development of flexible electronic devices and large‐scale energy storage technologies, functional polymer‐matrix nanocomposites with high permittivity (high‐k) are attracting more attention due to their ease of processing, flexibility, and low cost. The percolation effect is often used to explain the high‐k characteristic of polymer composites when the conducting functional fillers are dispersed...
An adaptive fuzzy sliding-mode (AFSM) control system is developed to control parallel DC-DC boost converters. The AFSM control system that combines a fuzzy adaptation technique with sliding mode control to enhance robustness and sliding performance in a class of uncertain multi-input multi-output (MIMO) nonlinear systems is proposed. Using an online adaptation scheme, a fuzzy sliding mode controller...
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