Nanoreinforced epoxy and adhesive joints incorporating boron nitride nanotubes

Epoxy resin nanocomposites with hydroxyl (OH) and amino (NH2) functionalized boron nitride nanotubes

“…The r-BNNT composites were prepared from r-BNNT powder (dried at 120 °C overnight) that was mixed with Epon828 by planetary centrifugal mixing (Thinky ARE 310). 28 For comparison, CNT-Epon828 and CNT-COOH-Epon828 were prepared in the same dry mixing procedures. In a typical experimental procedure for f-BNNT composite with a 3 wt% content, 834 mg of f-BNNTs ( Figure 2(b)) were dispersed in ~175 ml of acetone (Figure 2(c)).…”

“…Historically, BNNT polymer nanocomposites have received relatively limited studies 23 but improvements in mechanical and thermal properties have been reported. [24][25][26][27] Recently, we reported improvements in Young's modulus, fracture toughness, and single-lap-shear strength for an epoxy adhesive with raw (as-produced), unfunctionalized BNNTs (r-BNNT) 28 ; however, tensile strengths were decreased. In addition to many examples in the CNT literature, nanotube functionalization has also been shown to improve the nanoreinforcing effect of BNNTs.…”

“…29 In this work we employ hydroxyl (-OH) and amino (-NH 2 ) functionalized BNNTs (f-BNNT), generated via bromination and hydrolyzation reactions, to improve interaction with an epoxy matrix Epon828. The mechanical reinforcement effect of these functionalized BNNT-epoxy resin composites is compared to that of similar r-BNNT nanocomposites 28 as well as to similarly prepared CNT composites.…”

Surface modification of boron nitride by bio‐inspired polydopamine and different chain length polyethylenimine co‐depositing

“…The high loading normally corresponds to the high viscosity of the EP resin mixtures, which was a large handicap for processing . The fracture properties of EP can be raised by applying only a few amount of inorganic nanoparticles (less than 2 wt%), and the mechanical and physical properties of the cured EP are not be damaged because of the addition of such nanoparticles …”

“…9 The fracture properties of EP can be raised by applying only a few amount of inorganic nanoparticles (less than 2 wt%), and the mechanical and physical properties of the cured EP are not be damaged because of the addition of such nanoparticles. 10 Recently, 2D-layered materials involved in grapheme, 11 MoS 2,12 boron nitride (BN), [13][14][15] and WS 2 16 have drawn much attention into the field of epoxy resin reinforcement because of their excellent mechanical properties and unparalleled structure. BN is a prospective nanofiller used for multifarious applications because of its excellent antioxidation and thermal constancy, high thermal conductivity, and outstanding mechanical properties.…”