Polyamide 11/Poly(vinylidene fluoride)/Vinyl Acetate-Maleic Anhydride Copolymer as Novel Blends Flexible Materials for Capacitors

Abstract

Abstract:A novel all-polymeric blend with high dielectric constant (K) has been developed by blending polyvinylidene fluoride (PVDF) and polyamide (PA11) via co-melt-pressing technology with a compatilizer vinyl acetate-maleic anhydride (VA-MA) copolymer. Adding a copolymer of vinyl acetate and maleic anhydride decreased the dielectric loss (tan δ ≈ 0.057) and increased the dielectric constant (K blend = 15). The blends show high dielectric constants, which give better frequency stability, and excellent mechanical properties. SEM investigations suggest that the enhanced dielectric behavior originates from significant interfacial polymer-polymer interactions. FT-IR, DSC and XRD demonstrate that blending PA11 with PVDF affects the crystalline behavior of each component. The high-K polymeric blends created represent a novel type of material that is flexible and easy to process, moreover, is appropriate for flexible micro-electronics.

Study of the Preparation and Dielectric Property of PP/SMA/PVDF Blend Material

“…It can be seen from the figure that ε became greater with the increasing addition of PVDF, which can be explained by the influence of high dielectric properties of PVDF. There is an exception in PP/PVDF (60/40), due to the poorest interactions between two polymers according to our previous study [8][9][10]. A PVDF molecule contains two fluorine groups (-F) which show an intense polarity and have an orientation under the effect of external electric field, and the relaxation of the fluorine groups happens during the electric cycle.…”

“…Meanwhile, the application prospects of polymer blends is extensive, and they can typically be adopted by the modern electronic industry [6,7]. In our previous study, polyamide (PA) 11/PVDF and PA66/PVDF blends were reported as novel blends for capacitors [8][9][10]. Polyvinylidene fluoride (PVDF) is known as the polymer with the best dielectric properties, and has stable chemical and mechanical performance.…”

“…Polyvinylidene fluoride (PVDF) is known as the polymer with the best dielectric properties, and has stable chemical and mechanical performance. The blends comprised of PVDF and other organic materials have also demonstrated that the organic-polymer composites possess very distinct dielectric properties that can be applied in electrics, such as hydroacoustic sensors and medical applications [8][9][10][11]. Nevertheless, most of the high-molecular weight polymers are incompatible due to the lack of effective interactions with each other between mixed phases and the strong surface tension when melting [12].…”

Effects of Coupling Agents on the Structure and Electrical Properties of PZT-Poly (Vinylidene Fluoride) Composites

“…These PZT/PVDF composites could be widely applied in microelectronics devices fields. However, due to the lack of mechanical resistance and no flexibility, the combination of PZT particles with PVDF in micro scale is very difficult [11][12][13]. One of the most important key points of PZT/PVDF hybrid composites is to improve the interface of PZT in the polymer matrix.…”

Effects of Coupling Agents on the Structure and Electrical Properties of PZT-Poly(vinylidene fluoride) Composites

“…However, due to the lack of mechanical resistance and no flexibility, the combination of PZT particles with PVDF in micro scale is very difficult. [11][12][13] One of the most important key points of PZT/PVDF hybrid composites is to improve the interface of PZT in the polymer matrix.…”