کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1467227 | 990093 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Tensile strength of glass fibres with carbon nanotube–epoxy nanocomposite coating Tensile strength of glass fibres with carbon nanotube–epoxy nanocomposite coating](/preview/png/1467227.png)
A study has been made of a concept of ‘healing’ coatings applied onto the brittle fibre surface to reduce the stress concentrations and thus to improve the reinforcing efficiency in a composite. Coatings made from neat epoxy and carbon nanotube (CNT) reinforced epoxy nanocomposite were applied onto the individual glass fibres as well as rovings. It is shown that the 0.3 wt.% CNT–epoxy nanocomposite coating gave rise to a significant increase in tensile strength of the single fibre for all gauge lengths, better than the neat epoxy coating. The results on glass fibre roving also indicated a clear beneficial effect of nanocomposite impregnation on tensile strength. The rovings impregnated with the CNT nanocomposite exhibited a more uniform strength distribution and higher strengths than those impregnated with the neat epoxy. The changes in prevailing failure mechanisms influenced by the epoxy and nanocomposite coatings have been identified.
Journal: Composites Part A: Applied Science and Manufacturing - Volume 40, Issue 10, October 2009, Pages 1606–1614