کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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820590 | 1469549 | 2013 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Silica nanoparticles as coupling agents for polypropylene/glass composites Silica nanoparticles as coupling agents for polypropylene/glass composites](/preview/png/820590.png)
An evaluation of the fibre/matrix interfacial shear strength was performed by the single-fibre fragmentation tests on polypropylene–glass fibre microcomposites filled with various types and amounts of silica nanoparticles. In particular, both non-functionalized and dimethyldichlorosilane-functionalized silica nanoparticles were added up to a weight content of 7%. Moreover, the effect of various amounts of maleic anhydride modified polypropylene (PPgMA) on the fibre/matrix adhesion was also investigated, including some selected formulations containing both PPgMA and silica nanoparticles.Interfacial shear strength was found to remarkably increase (up to a factor of about 5 for a 7 wt% content of surface treated nanoparticles) with respect to the case of neat polypropylene matrix. The observed effect was explained by considering that silica nanoparticles increase the work of adhesion of polypropylene with respect to glass, as proven by contact angle measurements in different liquids.In addition, silica nanoparticles promoted a remarkable enhancement of both elastic modulus and creep stability of the selected polypropylene matrix.
Journal: Composites Science and Technology - Volume 76, 4 March 2013, Pages 77–83