@article{Guild:2018:10.3233/SFC-180219,
author = {Guild, F and Kinloch, AJ and Masania, K and Sprenger, S and Taylor, A},
doi = {10.3233/SFC-180219},
journal = {Strength, Fracture and Complexity},
pages = {137--148},
title = {The fracture of thermosetting epoxy polymers containing silica nanoparticles},
url = {http://dx.doi.org/10.3233/SFC-180219},
volume = {11},
year = {2018}
}

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TY  - JOUR
AB  - An  epoxy  resin,  cured  with  an  anhydride,  has  been  modified  by  the  addition  of  silica nanoparticles. The particles were introduced via a sol-gel technique which gave a very well dispersed  phase  of  nanosilica  particles,  which  were  about  20  nm  in  diameter,  in  the  thermosetting epoxy polymer matrix. The glass transition temperature of the epoxy polymer was  unchanged  by  the  addition  of  the anoparticles,  but  both  the  modulus  and toughness were increased. The fracture energy increased from 77 J/m2 for the unmodified epoxy to 212 J/m2 for  the  epoxy  polymer  containing  20 wt.%  of  nanosilica.  The  fracture  surfaces  were inspected  using  scanning  electron  and  atomic  force  microscopy,  and these  microscopy studies  showed  that  the  silica  nanoparticles  (a)  initiated localised plastic  shear-yield deformation bands in the epoxy polymer matrix and (b) debonded and allowed subsequent plastic  void-growth  of  the  epoxy  polymer  matrix.  A  theoretical  model  for  these  toughening micro mechanisms has been proposed to confirm that these micromechanisms were indeed responsible for the increased toughness that was observed due to the presence of the silica nanoparticles in the epoxy polymer.
AU  - Guild,F
AU  - Kinloch,AJ
AU  - Masania,K
AU  - Sprenger,S
AU  - Taylor,A
DO  - 10.3233/SFC-180219
EP  - 148
PY  - 2018///
SN  - 1567-2069
SP  - 137
TI  - The fracture of thermosetting epoxy polymers containing silica nanoparticles
T2  - Strength, Fracture and Complexity
UR  - http://dx.doi.org/10.3233/SFC-180219
UR  - https://content.iospress.com/articles/strength-fracture-and-complexity/sfc180219
UR  - http://hdl.handle.net/10044/1/60632
VL  - 11
ER  - 

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