A polyurethane-based elastomeric nanocomposite with a high dielectric constant

Recent development on modification of synthesized barium titanate (BaTiO3) and polymer/BaTiO3 dielectric composites

“…is a (AB)n type block linear polymer, with A for high molecular weight (1000 ~ 6000g/mol) polyester or polyether and B for diol with straight chains containing 2 ~ 12 carbon atoms. [93] TPUs have the advantages of high efficiency, excellent reliability and fast response during electric actuation. [94] However, its endogenous heat is huge, and it produces a large amount of heat during electric actuation, which limits its application in the field of electronic materials.…”

Pyroelectricity in strontium barium niobate/polyurethane nanocomposites for thermal/infrared detection

“…Electro-active polymers (EAPs) have been widely studied for the past few years for various sensor applications, owing to their high field-induced polarization [10][11][12]. In the present work, commercially available polyurethane (PU), an electro-active polymer, is selected as the host polymer matrix.…”

Dielectric, mechanical and electro-stimulus response properties studies of polyurethane dielectric elastomer modified by carbon nanotube-graphene nanosheet hybrid fillers

“…Composite methods, in which nanofillers are added to a polymer matrix, have been carried out to fabricate high ε polymeric materials. These nanofillers may be mainly divided into four categories: (1) high ε ceramic nanofillers (e.g., BaTiO 3 , PbZrTiO 3 ) [11][12][13][14][15]; (2) organic dipoles (e.g., N-allyl-N-methyl-p-nitroaniline) [16][17][18][19][20]; (3) high ε organic semiconductor (e.g., CuPc) [21][22][23]; and (4) conductive M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 nano-carbon fillers (e.g., CNT, GRN) [24][25][26][27]. Approach (1) usually requires high loading fractions (>50%) to effectively improve ε, and thus produces the large increase in elastic modulus.…”