Improved electromechanical properties of NBR dielectric composites by poly(dopamine) and silane surface functionalized TiO₂ nanoparticles

Abstract

Improved electromechanical properties of NBR dielectric composites were achieved using poly(dopamine) and silane surface functionalized TiO2 nanoparticles.

Intrinsically Tuning the Electromechanical Properties of Elastomeric Dielectrics: A Chemistry Perspective

“…This results in an increase in the relative permittivity compared to the unmodified siloxane, whilst maintaining the level of dielectric loss, a decrease in the Young's modulus and an increase in the breakdown strength . A similar result was observed with regard to the properties of ε r , ε″, Y , and E b for the surface modification of TiO 2 by increasing the compatibility of the nanoparticles with the NBR matrix …”

Improved electromechanical properties of brominated butyl rubber filled with modified barium titanate

“…In addition, the good dispersion of BT-KH570 in TBP/BT-KH570/BIIR composites may be attributed to polar groups -P]O on TBP having compatibility with the ester groups in KH570 and Br groups in BIIR molecular chain. 32,33 3.2.2 Mechanical properties and dielectric properties of dielectric composites. As expected, the plasticizer shows a signicant effect on mechanical properties.…”

Silicone Rubber Composites with High Breakdown Strength and Low Dielectric Loss Based on Polydopamine Coated Mica

“…Unfortunately, the active sites on the mica surface that could react with silane coupling agents are relatively few. Dopamine derivatives were reported to self-polymerize to form polydopamine, which can adhere to different kinds of materials [17][18][19][20], thus introducing plenty of catechol group active sites. Previously, we have successfully coated some inorganic fillers with polydopamine, which were further modified with secondary reaction because of the existing catechol groups of polydopamine [21,22].…”