✦ LIBER ✦

Adhesion strength improvement of epoxy resin reinforced with nanoelastomeric copolymer

✍ Scribed by Sepideh Khoee; Narges Hassani

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 473 KB
Volume: 527
Category: Article
ISSN: 0921-5093
DOI: 10.1016/j.msea.2010.07.013

No coin nor oath required. For personal study only.

✦ Synopsis

Nano-sized copoly(styrene-butylacrylate-ethylenglycoldimethacrylate) (St-BA-EGDMA) particles were added at different contents to improve the toughness of diglycidyl ether of bisphenol A epoxy resin (ER) using piperidine as a curing agent. Transmission electron microscopy (TEM) proved that nanoelastomer was finely dispersed in the epoxy adhesive. To compare the adhesion strength of different adherents utilizing both modified and unmodified epoxy adhesive, the lap shear strength (LSS) test was measured as a function of elastomeric nanoparticles (ENP) amount. Scanning electron microscopy (SEM) and FTIR were used to investigate the interface morphology and chemical composition of adherent and epoxy adhesive. The result indicated that the adhesion strength was increased dramatically by addition of nanoparticles compared with that of pure epoxy adhesive. The highest adhesion strength was obtained with 20 wt% elastomeric nanoparticles. It was found that reinforcement with nanoparticles improved the fracture toughness.

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