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Nanoreinforced Epoxy Composites Based on Boron Nitride Nanotubes

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Nanoreinforced Epoxy Composites Based on Boron Nitride Nanotubes and Their Application to Adhesive Joints and Composite Laminates

 

Boron nitride nanotubes (BNNTs) present a range of attractive properties that motivate their application for nanoreinforced composites, and they have recently become available in sufficient quantities to enable wider development of BNNT-enhanced composites. Here we introduce BNNTs and present the case for BNNT composites, focusing specifically on BNNT-reinforced epoxy. BNNTs offer a complimentary set of properties to carbon nanotubes (CNTs) and appear to interact more favorably with epoxies than do CNTs, which could eventually make them the preferred nanotube for reinforcing epoxy in applications where electrical conductivity is not required. Epoxy nanocomposites containing up to 7 wt% BNNTs were fabricated by planetary mixing and the effects of BNNT loading on viscosity, tensile properties and fracture toughness were determined. Two example cases: a low viscosity toughened epoxy system used in laminate fabrication and a higher viscosity epoxy adhesive, were reinforced by this simple approach. Adhesive joints have been prepared and evaluated in ASTM D1002 single-lap shear tests showing performance improvements of up to 15% in joint strength.

 

Authors: Michael B. Jakubinek, Yadienka Martinez-Rubi, Behnam Ashrafi, Mostafa Yourdkhani, Meysam Rahmat,

Drazen Djokic, Jingwen Guan, Keun Su Kim, Christopher T. Kingston, Benoit Simard and Andrew Johnston

 

Conference: CAMX 2016 – Anaheim

 

SKU/Code: TP16-0084

 

Pages: 12

 

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